Telex RadioCom TR-200 Operating Instructions Manual

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Document

Telex

Operating Instructions

Headset

Power

Ext Intercom Aux Audio

Portable Stations

Carrier Status

Portable Station Connect

BTR-200 II

Headset

Controls

Volume

Mic On Push Twice to Latch

RadioCom

ä

PROFESSIONAL

WIRELESS

INTERCOM SYSTEM

TR-200, TR-200P,

BTR-200 II, BTR-200B II

-1-

INTRODUCTION..............................................................................................................................1

GENERAL DESCRIPTION............................................................................................................1

TR-200 BASE STATION TRANSCEIVER.....................................................................................3

TECHNICAL INFORMATION ......................................................................................................3

SPECIFICATIONS ..................................................................................................................3

FEATURES..............................................................................................................................4

CONTROLS AND CONNECTIONS..............................................................................................5

FRONT PANEL.......................................................................................................................5

REAR PANEL .........................................................................................................................6

TR-200 BELT-PACK TRANSCEIVER...........................................................................................9

TECHNICAL INFORMATION ......................................................................................................9

SPECIFICATIONS ..................................................................................................................9

FEATURES............................................................................................................................10

CONTROLS AND CONNECTIONS............................................................................................10

EXTERNAL CONTROLS ...................................................................................................10

INTERNAL CONTROLS .....................................................................................................12

EQUIPMENT SET-UP....................................................................................................................13

UNPACKING ................................................................................................................................13

ANTENNA INFORMATION .......................................................................................................13

ANTENNA CONNECTIONS...............................................................................................13

ANTENNA POLARIZATION..............................................................................................14

DISTANCE BETWEEN ANTENNAS .................................................................................14

ANTENNA PLACEMENT ...................................................................................................15

IMPROVING RECEPTION/INCREASING RANGE..........................................................16

BTR-200 SET-UP..........................................................................................................................17

LOCATION............................................................................................................................17

INTERNAL INTERCOM SWITCHES.................................................................................17

RACK MOUNTING..............................................................................................................19

LOCAL HEADSET CONNECTION....................................................................................21

HEADSET MIC SELECT SWITCH.....................................................................................21

TRANSMIT SWITCH...........................................................................................................21

INTERCONNECTION TO A HARD-WIRED INTERCOM...............................................22

AUXILIARY AUDIO CONNECTION.................................................................................23

POWER CONNECTION.......................................................................................................23

DUMMY LOAD....................................................................................................................23

TR-200 SET-UP.............................................................................................................................24

HEADSET CONNECTION ..................................................................................................24

DYNAMIC/ELECTRET MIC SWITCH ..............................................................................24

BATTERY INSTALLATION ................................................................................................25

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TABLE OF CONTENTS (CONT.)

PRE-WALK-THRU CHECKLIST ................................................................................................26

SYSTEM OPERATION ..................................................................................................................27

BTR-200 OPERATION .................................................................................................................27

POWER..................................................................................................................................27

LOCAL HEADSET VOLUME.............................................................................................27

PUSH TO TALK/LOCK TO TALK SWITCH......................................................................27

TR-200 OPERATION....................................................................................................................28

POWER..................................................................................................................................28

BATTERY CHECK ...............................................................................................................28

HEADSET VOLUME ...........................................................................................................28

PUSH TO TALK/PUSH TO TRANSMIT SWITCH ............................................................28

BATTERY REMOVAL .........................................................................................................29

ENABLING AUDIO .....................................................................................................................30

PORTABLES .........................................................................................................................30

WIRED INTERCOM.............................................................................................................30

AUXILIARY..........................................................................................................................30

SETTING SYSTEM GAIN LEVELS ...........................................................................................31

ADJUSTING GAIN...............................................................................................................31

BTR-200 BASE STATION....................................................................................................31

TR-200 PORTABLE..............................................................................................................31

INTERCOM GAIN................................................................................................................32

AUXILIARY GAIN...............................................................................................................32

SYSTEM WALK-THRU.................................................................................................................33

TROUBLE SHOOTING .................................................................................................................34

BATTERY INFORMATION ..........................................................................................................35

GENERAL.....................................................................................................................................35

BC-4 BATTERY CHARGER........................................................................................................35

RECOMMENDED HEADSETS ....................................................................................................36

ACCESSORIES ...............................................................................................................................38

WARRANTY SERVICE INFORMATION...................................................................................40

FCC INFORMATION.....................................................................................................................41

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INTRODUCTION

GENERAL DESCRIPTION

This manual covers the BTR-200, BTR-200II, and the BTR-200B II Base Stations and the

TR-200 and TR-200P Portable Transceivers

(referenced as BTR-200 and TR-200 unless otherwise specified.)

The Telex Models BTR-200 and TR-200 were specifically designed to provide the user with a highly flexible wireless two-way communication system with the capability of interface with a wired intercom system and other auxiliary audio.

At the BTR-200 operator’s command, the remotes may communicate with each other, with a wired intercom system or with an auxiliary system. The BTR-200 Base Station with its one transmit and four receive channels was designed to operate in full duplex (simultaneous two-way communications) with up to four TR-200 Belt Pack transceivers (one transmit and one receive channel) See block diagram in figure 1.

HEADSET

MICROPHONE

EARPHONE

ANT

TR-200

TRANSMITTER

RECEIVER

RF CARRIER

SIGNAL

ANT

SIGNAL

WIRED

INTERCOM

BTR- 200

REC

RECEIVER

REC

TRANSMITTER

HEADSET

EARPHONE

MICROPHONE

AUXILIARY

INPUT

AUXILIARY

OUTPUT

Figure 1

Block Diagram of System

-1-

The system operates on selected frequencies within the 150-216 MHz band.

The BTR-200 system is fully compatible with a number of other wired intercom manufacturers units. See the BTR-200

Setup Section for additional information.

The Telex Model’s TR-200 and TR-200P

Belt-pack Transceivers, are designed with one transmit and one receive channel.

The TR-200 Transceiver operates in the continuous transmit mode with the audio, to talk, activated by a switch. As many as four TR-200 belt-pack transceivers can operate in a fully duplex network with one Telex Model

BTR-200 or BTR-200 II

Base Station.

The TR-200P Transceiver operates in the

Push-to-transmit mode (the transmit and talk function are activated together). Any number of TR-200P transceivers can be used in a half-duplex network with one BTR-200 or

BTR-200 II Base Station. Operate only one transmitter at a time. Attempting to use two transmitters simultaneously on the same channel will cause interference.

-2-

BTR-200 BASE STATION TRANSCEIVER

TECHNICAL INFORMATION

SPECIFICATIONS BTR-200

Input Power ........................................................................13.0 VAC RMS/300 mA with supplied adaptor or filtered 12 to 14 VDC/300 mA source

Intercom Output ..........50 mV (Low) or 330 mV (Hi) RMS into 300 ohm load typical (at rated deviation)

Intercom Input (Gain Minimum)................................................300 mV RMS typical (for rated deviation)

Auxiliary Output ............................................430 mV RMS into 600 ohm load typical (at rated deviation)

Auxiliary Input (Gain Maximum) ................................................60 mV RMS typical (for rated deviation)

Local Headset Input .............................................................................................2 mV RMS input nominal

1.5 mV RMS input at compression (Dynamic)

Local Headset Output ....................................................................32 mV maximum output into 600 ohmst

Temperature Range .......................................................................................-4

°F to 130°F (-20°C to 55°C)

Dimensions....................................................................................................15.75” W x 1.75” H x 10.5” D

(40 cm x 4.5 cm x 26 cm)

Weight ......................................................................................................................................4.5 lbs (2 kg)

Transmit

RF Frequency Range ...............................................................................................................150-216 MHz

RF Frequency Stability ......................................................................................Crystal Controlled, 0.005%

RF Power Output ..................................................................................................................50 mW Typical

Modulation..................................................................................................................FM, 3 KHz deviation.

115 micro-seconds Pre-emphasis

Transmit Antenna ..........................................................................................................5/8-wave (supplied)

SO239 connector on chassis

Modulation Limiter .......................................................................................................Internal Compressor

Modulation Frequency Range ...................................................................................300 to 5000 Hz ±2 dB

Radiated Harmonics and Spurious Emissions.................................................................................-45 dBC,

Exceeds FCC Specifications

FCC...................................................................................................Type Accepted Under Parts 90 and 74

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FEATURES

The Telex Model BTR-200 is a Base Station with one transmitter and four receivers. It is designed for portable two way communication with the capability for interface to other audio systems. Features include:

SPECIFICATIONS BTR-200 (Cont.)

Receive

RF Frequency Range ..............................................................................................................150-216 MHz

RF Frequency Stability ......................................................................................Crystal Controlled, 0.005%

Type..................................................................................................Dual conversion superheterodyne, FM

RF Sensitivity.......................................................................................Less than 0.5 µV for 12 dB SINAD

IF Selectivity...............................................................................3 dB at 30 kHz (4 pole Monolythic Filter)

Image Rejection .....................................................................................................................65 dB or better

Squelch Quieting ..................................................................................................................................90 dB

Squelch Threshold ..............................................................................................................1.0 µV (Internal)

Signal-to-Noise Ratio...........................................................................................................................90 dB

Receive Antenna ............................................................................................................5/8-wave (supplied)

SO239 connector on chassis

Distortion .......................................................................................................Less than 1% at Rated Output

FCC .....................................................................................................................Notification Under Part 15

An extremely flexible unit that has the capability to communicate at one time with any number of the available portable stations (up to four) or wired stations (intercom and/or other audio source).

(supplied), via the power jack on the rear of the unit. It can also be powered by any filtered 12 to 14 VDC/300 mA source or

13.0 VAC RMS 300 mA source.

Intercom connections with the ability to interface with most wired intercom systems.

RF LED indicator for each portable station.

All metal case for superior shielding.

Molded front panel for aesthetic appeal along with functionability .

Table or single height rack mountable.

-4-

CONTROLS and CONNECTIONS

FRONT PANEL ( Refer to Figure 3)

Power ON/OFF Switch: Push this switch once toturn power ON; push it again to turn the power OFF.

Mic On-Push-to-Talk/Lock-to-Talk Switch:

Enables the local headset microphone audio function.

Power ON Indicator: The Power ON Indicator is illuminated when the Power ON/OFF

Switch is pushed in the ON Position. It remains illuminated while the Transceiver ison.

NOTE: DOES NOT control base station RF transmit.

Local Push-to-Talk Indicator: Will be illuminated whenever the talk function is on.

Local Headset Connector: 4 Pin XLR Connector for Input/Output. The headset jack will accept 6 different Telex Model Headsets. See

“Recommended Headset” Section in back of manual for more information. Compatible with other intercom headsets with four pin XLR connectors that are wired as shown in Figure 2.

MICROPHONE

SHIELD (-)

MALE CONNECTORS

BTR-200/TR-200

Local Microphone Gain Control and

Overmodulation Indicator: A screwdriver adjustable control is provided to control the input level of the local headset mic. This input is protected from overloads by means of a gain compressor whoseoperation is signaled by the gain LED indicator.

Portable Enable Switches and Indicators:

When in the “IN” position, the Enable switches allow the user of the corresponding portable unit to be heard by others connected to the system. When in the “OUT” position, the respective portable will be muted, but this portable will still be able to hear all other selected remotes and interfaces. The indicators normally show the presence of a portable transceiver in use on the channel corresponding to that indicator.

HEADPHONE

BALANCED

AUDIO

OUT

MICROPHONE

AUDIO (+)

Figure 2

Headset XLR Connector Wiring

Local Headset Volume: Adjusts volume to

Local Headset. DOES NOT AFFECT MICRO-

PHONE GAIN.

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Ext Intercom Switch, Level Control, and In-

dicator: This switch enables the wired intercom interface when “IN”, and disables it when

“OUT”. For RTS intercoms, the “IN” position is channel A and the “OUT” position is channel B. A screwdriver adjustable control is provided to control the input level of the wired intercom.

Auxiliary Audio Enable Switch, Level Control, and

Indicator: The switch enables and disables the Auxiliary interface when “IN” and

“OUT”, respectively. The function of the level control here is the same as that described for the intercom.

REAR PANEL (Refer to Figure 4)

Transmit Antenna Connector: Connect

5/8-wave antenna (supplied) to this connector.

Antenna color should match connector dot on

BTR-200.

Receive Antenna Connector: Connect

5/8-wave antenna (supplied) to this connector.

Antenna color should match connector dot on

BTR-200. See “Antenna Information” section for assembly information.

Transmit Switch: Slide switch that allows the operator to select one of three transmit modes.

In the “OFF” position, the transmitter is always off. This mode may be used if the base if functioning solely as a monitor. In the “CONT” position, the transmitter is always on. This continuous mode is recommended over the

“REMOTE” mode. In the “REMOTE” position, the transmitter is enabled only when one or more portables are active.

Headset Microphone Select Switch: This switch allows the user to select either an

Electret or Dynamic microphone. This switch is factory preset to DYN Position.

NOTE: All Telex headsets that are used with this intercom are dynamic type microphones.

Intercom Connectors: Connections to interface the BTR-200 with a wired intercom system.

Auxiliary Output/Input Connectors: Can be used for 2-way (four wire) input and output to the BTR-200 or as a simplex input or output.

Typical uses are 4 wire low level intercom’s, tape recorders, public address inputs or outputs, or when operating two BTR-200 units simultaneously.

Power Jack: For external AC wall supply adaptor (supplied) or any filtered 12 to 14

VDC/300 mA source, or 13.0 VAC RMS/300 mA source.

Speaker Jack: Allows the user to connect an external speaker (8 ohms minimum) to the unit.

Speaker Gain Control: Screwdriver adjustable. Adjust the gain control clockwise to increase speaker gain or counterclockwise to decrease speaker gain.

NOTE: Leave setting counterclockwise if no speaker is attached.

-6-

Headset Controls

INTERCOM INDICA

-7-

-8-

TR-200 BELT-PACK TRANSCEIVER

TECHNICAL INFORMATION

SPECIFICATIONS TR-200

Overall

Power Requirements ......................................................................6AA cells (Alkaline, NEDA, MN 1500)

Nickel Cadmium Optional

Current Drain ..........................................................................................................................typical 65 mA

Temperature Range .......................................................................................-4°F to 130°F (-20°C to 55°C)

Dimensions......................................................................................................4.25” W x 4.125” H x 2.0” D

(108mm x 105mm x 51 mm)

Weight.................................................................................................................13 oz (369g) with batteries

Transmit Antenna...................................................................................................1/4-wave wire (attached)

Receive Antenna ....................................................................................................1/4-wave wire (attached)

Transmit

RF Frequency Range ...............................................................................................................150-216 MHz

RF Frequency Stability ......................................................................................Crystal Controlled, 0.005%

RF Power Output ..................................................................................................................50 mW Typical

Modulation ..............................................................................................................FM, 5000 Hz deviation,

115 micro-seconds Pre-emphasis

Modulation Limiter .......................................................................................................Internal Compressor

Modulation Frequency Range ................................................................................300 to 5000 Hz +/_ 2 dB

Microphone Audio Input.....................................................................................................30 to 3500 ohms

Microphone Input Sensitivity .......................................................................2 mV Dynamic, 4 mV Electret

Radiated Harmonics and Spurious Emissions.................................................................................-45 dBC,

Exceeds FCC Specifications

FCC...................................................................................................Type Accepted Under Parts 90 and 74

Receive

RF Frequency Range ...............................................................................................................150-216 MHz

RF Frequency Stability .............................................................................Crystal Controlled, 0.005% Type

Dual Conversion Superheterodyne, FM

RF Sensitivity........................................................................................Less than 0.5 µV for 12 dB SINAD

IF Selectivity...............................................................................................3 dB at 30 kHz (Ceramic Filter)

Image Rejection .....................................................................................................................70 dB or better

Squelch Quieting ..................................................................................................................................90 dB

Squelch Threshold ..............................................................................................................3.0 µV (Internal)

Signal-to-Noise Ratio...........................................................................................................................90 dB

Audio Output .............................................................................................32 mW into 600 ohms (Headset)

Distortion .......................................................................................................Less than 1% at Rated Output

FCC .....................................................................................................................Notification Under Part 15

-9-

FEATURES

Lightweight, small size and is self-contained.

2 separate antennas, one for transmit, the other for receive.

Push-to-Talk with Lock-to-Talk feature switch for the TR-200 and

Push-to-Transmit with Lock-to-Transmit feature for the TR-200P.

CONTROLS AND CONNECTIONS

EXTERNAL CONTROLS (Refer To Figure 6)

Volume OFF/ON Control: This thumbwheel control serves as both an off/on switch and as a volume control.

Low Battery and Overmodulation Indicator

LED:

Headset Jack: A four pin XLR connector for

Input/Output. The headset jack will accept six different Telex Model Headsets. See “Recommended Headset” Section for more information. Compatible with other intercom headsets with four pin XLR connectors that are wired as shown in Figure 5.

Low Battery Indicatorœ: Part of the battery check circuit. When the power switch is placed in the “ON” position the LED will flash one time if the battery is good. A poor battery will cause the LED to illuminate continuously and a bad or unusable battery will not cause any illumination at all.

Overmodulation Indicator: Uses the same

LED as the low battery indicator. During the talk mode, if the microphone gain is too high, the LED will illuminate when talking.

Push-To-Talk/Lock-To-Talk Switch: For

Model TR-200, this switch enables the talk function. For Model TR-200P, this switch enables the transmit and audio function and otherwise operates as described for TR-200.

Talk LED Indicator: (Labeled “talk”) Will be illuminated whenever the talk function on the

TR-200 or transmit function on the TR-200P is enabled.

MICROPHONE

SHIELD (-)

MICROPHONE

AUDIO (+)

MALE CONNECTORS

BTR-200/TR-200

Figure 5

Headset XLR Connector Wiring

HEADPHONE

BALANCED

AUDIO

OUT

-10-

bat/ ovmod talk

LOW BATTERY / OVERMODULATION

INDICATOR LED

TALK LED INDICATOR

PUSH-TO-TALK/

LOCK-TO-TALK SWITCH

talk

BELT CLIP

VOLUME OFF/ON CONTROL

HEADSET JACK

RECEIVE ANTENNA

TRANSMIT ANTENNA

Figure 6

External Controls, TR-200

-11-

DYNAMIC / ELECTRET

SWITCH

ACCESS TO MICROPHONE

GAIN CONTROL

FCC ID: B5DTR200

S / N :

P / N : 7 0 6 8 1-

MADE IN U.S.A.

MIC

BATTERY COMPARTMENT

Figure 7

Internal Controls, TR-200

INTERNAL CONTROLS (Refer To Figure 7)

Belt Clip: Combination Belt Clip/Battery

Cover. Access to Battery Compartment, Microphone Gain Control and

Dynamic/Electret

Switch is accomplished by removal of belt clip via a quick release 1/4 turn fastener.

Microphone Gain Control: Screwdriver adjustable by removing belt clip and prying out the small rubber plug to the right of the screw boss.

Dynamic/Electret Switch: This switch allows selection of “D” when using a Dynamic Microphone or "E" when using an

Electret Microphone.

NOTE: All Telex headsets that are used with this intercom are dynamic microphones. Unit is shipped in the “D” position.

Battery Compartment: Holds 6 AA batteries in a removable battery holder (supplied).

-12-

EQUIPMENT SET-UP

UNPACKING

Unpack your BTR-200 and TR-200 System. If there are any damages or shortages, refer to the

“Warranty Service Information" section in this manual.

ANTENNA INFORMATION

ANTENNA CONNECTIONS

The BTR-200 is supplied with two (2) antennas. One 5/8-wave antenna for Transmit and one 5/8-wave for Receive.

To insure that the frequency range of the antennas match the receiver and transmitter of the

BTR-200, match the color code on the antenna with the color code on the BTR-200.

Assemble the 5/8-wave antenna by screwing the three sections into one another as shown in

Figure 8. All three sections of the BTR-200

5/8-wave a ntennas must be used. Leaving out a section will result in reduced distance capability.

Attach the receive 5/8-wave antenna to the antenna input receptacle labeled “Receive Antenna” on the right side of the rear panel via the supplied connectors. Attaching the angled connector to the base station receptacle first, then attaching the straight connector, as shown in Figure 9, will prevent antenna sway.

DO DON’T

Figure 8

5/8-wave Antenna Assembly

-13-

Figure 9

Attaching 5/8-wave Antenna

Attach the transmit 5/8-wave antenna to the antenna input receptacle labeled “Transmit Antenna” on the left side of the rear panel. The antenna should be vertically aligned.

DISTANCE BETWEEN ANTENNAS

The distance between the BTR-200 Receive and Transmit antennas is not adjustable when the antennas are connected directly on the back of the unit.

The antennas can be remoted for better signal path. A Telex coax assembly is required. See

“Accessory” section for order information.

NOTE: If your BTR-200 transceiver is to be located in a shielded rack mount enclosure or other poor RF location, you must remote the

5/8-wave antennas with coax assemblies.

Figure 10

Transmit Antenna Receptacle

ANTENNA POLARIZATION

The Telex Wireless Intercom System is “Vertically Polarized". This means both the transmitting and receiving antennas should operate in the vertical position.

Headset

Power

Ext Intercom Aux Audio

Portable Stations

Carrier Status

3 4

Portable Station Connect

BTR-200 II

Headset

Controls

Volume Mic On Push Twice to Latch

Figure 11

Vertically Polarized Antennas

-14-

ANTENNA PLACEMENT

Proper antenna placement probably has the most effect on your TELEX Wireless Intercom

System’s overall performance. The following suggestions will result in optimum performance.

Proper placement of the TR-200 can be critical. The trailing antennas should “dangle” freely. “Wadding” the antennas up and placing the TR-200 in a pocket, etc., will reduce system distance.

It is suggested that the unit be worn on the belt or pocket with both antenna’s hung vertically for best operating range and performance.

Keep the distance between the base (BTR-200) and the belt packs (TR-200) antennas as short as possible. The greater the distance, the weaker the signal. However, the portables should be a minimum distance of 10 feet from the base station and each other for best performance.

700 FEET

100 FEET

Headset

Power

Ext Intercom Aux Audio Portable Stations Carrier Status

Portable Station Connect

BTR-200 II

Volume

Headset

Controls

Mic On Push Twice to Latch

A S D I S T A N C E I N C R E A S E S , S I G N A L

STRENGTH

DECREASES

Figure 13

Distance Between BTR-200 and TR-200

Make sure the “signal paths” between the

BTR-200 and remotes are unobstructed. You should always be able to visibly locate the antennas at all times, for best performance.

Figure 12

Proper Dressing of the Antennas

-15-

Headset

Power

Ext Intercom Aux Audio Portable Stations Carrier Status

Portable Station Connect

BTR-200 II

Headset

Controls

Volume Mic On Push Twice to Latch

SIGNAL REACHES

ANTENNA AT FULL

STRENGTH WITH NO

OBSTRUCTIONS

Figure 14

Keeping Site Clear to Antenna

Attempting to operate the wireless intercom system through or around walls, ceilings, metal objects, etc. will reduce system range and performance.

Headset

Power

Ext Intercom Aux Audio Portable Stations Carrier Status

Portable Station Connect

BTR-200 II

Headset

Controls

Volume Mic On Push Twice to Latch

SIGNAL REFLECTION OFF A METAL OBSTRUCTION

CAUSES REDUCED SIGNAL AND “MULTIPATH”

Figure 15

Operating System Near Obstructions

DO NOT

- mount the BTR-200 5/8-wave antennas on, or next to, metal such as beams, walls with metal studs, equipment racks, etc.

This also applies to the antennas when assembled directly to the BTR-200. This will “detune” the receiving antenna which can result in noise or loss of RF signal at the BTR-200. See

Figure 16.

IMPROVING RECEPTION AND IN-

CREASING RANGE

Keeping the distance from the base (BTR-200) and the belt packs (TR-200) as short , and unobstructed as possible will produce the most reliable performance.

The BTR-200 is supplied with two antennas.

This should provide satisfactory system performance in most applications. System range can be enhanced by remoting the 5/8-wave receive antenna.

1.

Placing the unit on top of a shelf or equipment rack and remoting the receive antenna is OK.

2.

Placing the unit on top of a shelf or equipment rack unobstructed without remoting the receive antenna is OK.

1 2

3.

Placing the unit on top of a shelf or equipment rack and mounting the remoted receive antenna on the side of the shelf or equipment rack is BAD.

3-BAD

Headset

Power

Ext Intercom Aux Audio Portable Stations Carrier Status

Portable Station Connect

BTR-200 II

Headset

Controls

Volume Mic On Push Twice to Latch

Headset

Power

Ext Intercom Aux Audio

Portable Stations Carrier Status

Portable Station Connect

BTR-200 II

Headset

Controls

Volume Mic On Push Twice to Latch

Headset

Power

Ext Intercom Aux Audio Portable Stations Carrier Status

Portable Station Connect

BTR-200 II

Headset

Controls

Volume

Mic On Push Twice to Latch

Figure 16

Receive Antenna Placement

-16-

BTR-200 SET-UP

LOCATION

Locate the BTR-200 transceiver on a level surface with the rear of the unit facing you. See

“Antenna Information” section for more information on choosing a location.

INTERNAL INTERCOM SWITCHES

Intercom Dip Switch: Located in the inside of the unit is a DIP Switch. This switch will have to be set for the wired intercom unit you will be using. The switch is factory set for interfacing with Telex Audiocom wired intercom units. See Table 1 if you will be using an RTS or Clearcom wired intercom system.

To change the switch positions you will need to remove the cover on the BTR-200. Remove three #6-32 x 3/8" screws on both sides of the unit. Remove four #4-40 x 3/16" screws on the top front and loosen three #4-40 x 3/16" screws on the back of the unit. The cover will slide off.

Reference Figure 17 for switch positions.

Change the switch positions as indicated in the chart depending on the wired intercom system you will be using. After setting this switch, set the High/Low switch as shown in the next section and then replace cover and secure with the hardware previously removed.

1

SWITCH POSITION

2 3 4 5 6

Telex Audiocom

RTS

Clearcom

Table 1

Dip Switch Positions For Wired Intercom Terminations

7 8 9

ON ON OFF ON OFF ON OFF OFF ON

OFF OFF ON OFF ON OFF ON ON OFF

ON OFF ON ON OFF OFF OFF ON ON

FRONT

Figure 17

Dip Switch

-17-

FRO

1 2

3 4

5 6

7 8

High/ Low Switch: Along with setting the

DIP switch inside the unit to correspond to the wired intercom you have selected to use, you must also set the “High/Low” switch. This switch is also located inside the BTR-200 as shown in Figure 18.

For the correct setting corresponding to your wired intercom unit see Table 2. The switch is factory set for use with Telex AudioCom or

RTS wired intercoms.

Switch

Setting

Telex

AudioCom

RTS

Clearcom

High

Low

Table 2

See

Detail

A

B

SEE DETAIL A AND B

LOW

HIGH

Detail A

High Setting

FRONT

Figure 18

Location of High/Low Switch

-18-

Detail B

Low Setting

RACK MOUNTING

Install BTR-200 in Rack Enclosure: To rack mount the BTR-200 base transceiver do the following:

Remove the two #6-32 x 3/8" screws on each side of the transceiver as shown in Figure 19.

Place the rack mount brackets (supplied) on either side of the unit and insert three #6-32 x

3/8" screws for each bracket. Tighten the screws securely.

Insert the BTR-200 into your 19" rack enclosure and insert four (4) #10-32 x 3/8" Phillips pan head screws (supplied) in each corner of the rack mount brackets and secure to your enclosure.

REMOVE SCREWS

(TYPICAL BOTH SIDES)

Figure 19

Attaching Brackets For Rack Mounting

-19-

# 6 - 32 X 3/8

Remoting Antennas: It will be necessary to remote both the transmit and receive antennas on the BTR-200 when it is rack mounted.

Connect the coax cable assembly (not supplied), to the back of the receive antenna receptacle and remote the 5/8-wave antenna. The antenna can be attached to either a wall mount bracket or a microphone stand bracket (not supplied). See “Accessory” section for order information.

You will also need to remote the transmit antenna in the same manner. Connect a coax cable assembly to the transmit antenna receptacle. Remote the 5/8-wave antenna, by attaching the antenna to one of the brackets

(not supplied).

Headset

Power

Ext Intercom Aux Audio

Portable Stations

Carrier Status

3 4

Portable Station Connect

BTR-200 II

Volume Mic On Push Twice to Latch

Figure 20

Remoting Antennas When Rack Mounted

-20-

LOCAL HEADSET CONNECTION

Insert the headset/microphone into the 4 pin

XLR connector on the front panel. See the microphone connection diagram (Figure 2) if other than a Telex Headset is used.

HEADSET MICROPHONE SELECT

SWITCH

If the headset you are using has an Electret microphone, the local microphone select switch must be in the “ELT” position (Electret). This switch is located on the rear panel. A +5 volt bias is available at the microphone plug for electret use.

If you are using a headset with a dynamic microphone, place the local microphone select switch in the “DYN” position (Dynamic).

NOTE: FOR PROPER OPERATION YOU

MUST MATCH THE TYPE OF

MICRO-

PHONE YOU ARE USING WITH THE DY-

NAMIC/ELECTRET SWITCH LOCATED

ON THE REAR OF THE UNIT.

TRANSMIT SWITCH

Allows the operator to select three different types of transmitting modes; continuous transmitter, transmitter off, or remote transmitter.

For most operations, place the transmitter switch in the “CONT” position (Continuous mode).

In the Continuous mode the transmitter therefore will be on at all times regardless of whether the portables are on or not.

In the Remote mode, the only time the base can transmit is when a portable unit is turned on.

In the Off mode the BTR-200 base station will not transmit to the remote belt-packs.

This mode might be used if the base is to be a monitor station only.

-21-

TO HEADSET

OR HANDSET

Figure 21

Connecting Headset to the BTR-200

Headset Mic

Dyn

Cont

Figure 22

Transmit

Off

Figure 23

Elt

Remote

Transmit Switch

Headset Microphone Select Switch

INTERCONNECTION TO A HARD-WIRED

INTERCOM SYSTEM

The RADIOCOM wireless system can be integrated into Telex intercom systems and most existing wired intercom systems including RTS and Clearcom.

Connect the intercom cable to the back of the

BTR-200. There are two intercom connections on the back of the unit, one being a male connector, the other a female connector, connected in parallel with each other. Either works as an input or output.

EXTERNAL

SPEAKER

BINAURAL

BELTPACK

BINAURAL

BELTPACK

Headset

Power

INTERCOM

Ext Intercom Aux Audio

1 4

Portable Station Connect

AUX

IN OUT

BTR-200 II

Headset

Controls

Volume Mic On Push Twice to Latch

BTR-200

PA SYSTEM

ANOTHER BTR 200

OR OTHER AUDIO INPUT

TR-200

Figure 24

Typical Interface to Wired System

-22-

PUSH

XXXX

I/C

PUSH

XXXX XXXX

I/C

PUSH

Figure 25

Connecting Two BTR-200 Together

CONNECTING AUXILIARY AUDIO SYSTEM

Connect the BTR-200 to your auxiliary audio via the Auxiliary input/output receptacles on the rear of the unit or when two BTR-200 are used as a system.

Connect the first BTR-200 to the second

BTR-200 by using two short male to female

XLR type cables (not supplied). See Figure 25.

DUMMY LOAD

In the case where a wired intercom will not be used with the BTR-200, it is important that the dummy load (supplied) be installed. The dummy load should be plugged into the

“Intercom Loop-Thru” connector.

NOTE: If this is not set up properly, an annoying squeal may result that may cause damage to the ears.

Note that the stations need to be on different frequencies.

POWER

AC/DC 13 OV 300mA

BTR 200

POWER CONNECTION

Insure the Power ON/OFF Switch on the front of the BTR-200 is in the “OFF” position. Connect the supplied AC power supply cord to the receiver at the socket labeled “POWER”. Connect the power supply unit to an AC outlet supplying 105 to 125 VAC, 60 Hz.

OUTLET

Figure 26

Connecting the Power Supply

-23-

TR-200 SET-UP

HEADSET CONNECTION

Insert the headset/microphone into the connector on the bottom of the unit. See the headset connection diagram (Figure 5) if unit other than Telex is used.

DYNAMIC/ELECTRET SWITCH

If the headset you are using has an Electret microphone, the dynamic/electret switch must be in the “E” position (Electret). This switch is accessible by removing the belt clip and removing the battery holder. A +5 volt bias is available at the microphone plug for electret use.

If you are using a headset with a dynamic microphone, place the dynamic/electret switch in the “D” position (Dynamic).

TO HEADSET

NOTE: FOR PROPER OPERATION YOU

MUST MATCH THE TYPE OF MICRO-

PHONE YOU ARE USING WITH THE DY-

NAMIC/ELECTRET SWITCH LOCATED

INSIDE THE BATTERY COMPARTMENT.

Figure 27

Connecting Headset

FCC ID: B5DTR200

S / N :

P / N : 7 0 6 8 1-

ELECTRET

MADE IN U.S.A.

MIC

DYNAMIC

Figure 28

Dynamic/Electret Switch

-24-

BATTERY INSTALLATION

Insure that the OFF/ON Volume control knob is turned OFF. Access the battery compartment by removing the belt clip on the back of the unit. Release the 1/4 turn fastener located on the back of the belt clip and remove belt clip/cover.

Remove the battery holder from the box. Insert six (6) AA batteries in the holder, paying close attention to polarities of the batteries.It may be necessary to turn the batteries with the thumb and forefinger the first few times the batteries are inserted into the battery holder to insure good positive contact. Insert the holder into the case and replace the belt clip/battery cover and engage the 1/4 turn fastener.

REMOVE BELT CLIP

Figure 29

Battery Installation

-25-

PRE-WALK-THRU CHECKLIST

Following the instructions fully to this point you have successfully competed the following checklist:

Set internal intercom switch to correspond with the wired intercom.

Located the BTR-200 transceiver properly.

Set transmit switch on BTR-200.

Connected headsets to BTR-200 and all TR-200’s

Connected the BTR-200 to any auxiliary audio, intercom or external speaker.

Installed batteries in the TR-200

Remote Transceiver.

Connected power to BTR-200 transceiver.

C o n n e c t e d t h e 1 / 4 - w a v e a n d

5/8-wave antenna to the BTR-200.

Check frequency range of the antenna matching the frequency of the

BTR-200 by correctly matching color codes.

Set Dynamic/Electret switches in both BTR-200 and TR-200

If you missed any of the above instructions, go back and complete that instruction before going on.

-26-

SYSTEM OPERATION

BTR-200 OPERATION

POWER

If you have followed the instructions until this point, you should now be ready to turn both the

TR-200 and the BTR-200 “ON”.

LOCAL HEADSET VOLUME

Adjust the volume control on the BTR-200 by rotating theVolume control either clockwise or counterclockwise as required for comfortable listening volume.

Place the power switch on the BTR-200 in the

“ON” position. The red power on indicator

LED should illuminate.

INCREASES

VOLUME

Volume

OFF

Figure 30

ON

Power ON/OFF - Volume Control Knob

LOCAL HEADSET VOLUME

Figure 31

Volume Control - BTR-200

PUSH TO TALK/LOCK-TO-TALK SWITCH

To enable the talk function on the BTR-200, press and hold down on the talk button and begin talking. Releasing the talk button will discontinue the microphone audio. For continuous talk, quickly press the talk button twice. This enables the talk function as long as you want. To release the talk function press the talk button once more and the talk function will cease.

NOTE: The talk LED will be illuminated whenever the talk function is activated.

TALK LED

BTR-200 II

-27-

Mic On Push Twice to Latch

PUSH TO TALK

LOCK TO TALK SWITCH

Figure 32

Push-to-Talk/Lock-to-Talk Switch

TR-200 OPERATION

POWER

You should now be ready to turn the TR-200

“ON”. Rotate the OFF/ON Volume Control

Switch on the TR-200 counterclockwise to turn the unit on.

BATTERY CHECK

As you rotate the OFF/ON Volume Control knob clockwise to turn the unit on, note that the battery LED (labeled bat/ovmod) should flash one time on good batteries. Poor batteries will cause the LED to be illuminated continuously and a bad or unusable battery will not cause any illumination at all.

PUSH TO TALK/PUSH TO TRANSMIT

To enable the talk function on the Model

TR-200 press and hold down on the talk button and begin talking. Releasing the talk button will discontinue the microphone audio. For continuous talk, quickly press the talk button twice. This locks on the talk function. To release the talk function press the talk button once. Note that the TR-200 transmits any time that the power is on.

For the Model TR-200P, the switch enables both the transmit and audio functions and otherwise operates as described for the TR-200.

NOTE: The talk LED will be illuminated whenever the talk function is activated.

bat/ ovmod talk

Figure 33

Low Battery andOvermodulation

Indicator LED

HEADSET VOLUME

After batteries have been checked, adjust the volume control by rotating the control as required for comfortable listening volume.

talk talk

PUSH-TO-TALK/LOCK-TO-TALK SWITCH

Figure 35

Push-to-Talk/Lock-to-Talk Switch

ON/ INCREASES

VOLUME

ON / OFF SWITCH AND

VOLUME CONTROL

Figure 34

Power ON/OFF - Volume Control -TR-200

-28-

BATTERY REMOVAL

To remove the battery holder from the case to change batteries, follow the instructions as before for removing the cover. Pull the pull-bale strap on the holder, the holder should come out. Some models will not have the pull bale.

If the pull bale is not present on the battery holder, turn the unit over with the battery holder facing downward. Give the case a slight shake into the palm of your hand, the holder should fall out.

NOTE: For maximum uninterrupted service it is suggested that new 1.5 volt alkaline AA batteries (Mallory MN1500 or equivalent) be installed prior to each use. Avoid “shelf worn” or

“economical” batteries. Operation from heavy duty nickel-cadmium batteries is also permissible, at the expense of operating time. (NEDA

10015 or equivalent). Typical life of fresh alkaline batteries with the TR-200 is approximately

24 hours maximum, 8-10 hours is typical of fully charged nickel-cadmium batteries.

NOTE: Nickel-cadmium batteries can be charged right in the holder using the Telex

BC-4 Battery Charger. Refer to “Battery Information” Section.

REMOVE BELT CLIP

Figure 36

Battery Removal

-29-

ENABLING AUDIO

PORTABLE TRANSCEIVERS

Select the TR-200 portables that will be on line with the BTR-200. Push in the portable enable switches that correspond to the frequencies of the TR-200 remotes that you will be using. The frequencies of the portable stations 1,2,3, and

4, are listed on the bottom of the BTR-200.

The Portable Carrier LED will illuminate when the remote on that frequency is turned on. The indicators may also light in response to outside interference on that channel or to intermodulation arising from portables being used at too close a distance to the base. To prevent these sources from creating undesirable noise, all unused channels should be switched out.

When using a RTS system wired intercom the switch will act as a channel selector switch for selecting of either Channel A or Channel B.

AUXILIARY

The AUX Switch on the front of the BTR-200 will enable any auxiliary audio that will be used.

INTERCOM SWITCH

The intercom switch in the front of the unit will act as an enabling switch when the unit is being used with either a Telex Audiocom wired intercom or Clearcom wired intercom.

Ext Intercom Aux Audio

Portable Stations

Carrier Status

Portable Station Connect

Figure 37

Enable Switches

-30-

SETTING SYSTEM GAIN LEVELS

ADJUSTING GAIN

The gain may need to be adjusted for various audio conditions. The overmodulation LED will indicate when the gain is too high. If the

LED is illuminated when you are talking, the gain is too high and will need to be decreased.

If the LED does not flash at all, and the audio is low, the gain may need to be increased. An occasional flash of the overmodulation indicator is fine.

If the transmitted audio is too high or to low, the gain control potentiometer will need to be adjusted. Using a plastic screwdriver (supplied), adjust the control clockwise to increase the gain or counterclockwise to decrease the gain. Note that the gain can also be adjusted by changing the spacing between the microphone and your mouth.

BTR-200 BASE STATION

The microphone overmodulation indicator for the BTR-200 headset can be found on the right side of the front panel. The microphone gain control potentiometer is located to the left of the indicator.

TR-200 PORTABLE

The overmodulation circuitry in the TR-200 uses the same LED as the low battery circuitry.

If modulation is too high this LED will illuminate when talking.

If the gain needs to be adjusted, remove the belt clip on the rear of the unit and pry out the small rubber plug to the right of the screw boss. This will reveal the microphone gain control potentiometer. Once adjusted, replace the rubber plug.

BTR-200 II

Mic On Push Twice to Latch

INCREASE

DECREASE

REMOVE BELT CLIP

INCREASE DECREASE

CAUTION

D O N O T r e m o v e this plug or attempt to adjust. This beltpack has been precisely tuned and any attempt to alter this adjustment will result in a non-operational unit.

GAIN

REMOVE THIS RUBBER

PLUG FOR ACCESS TO

THE MICROPHONE GAIN

CONTROL

OVERMODULATION

INDICATOR

Figure 38

Adjusting Microphone Gain -BTR-200

Figure 39

Adjusting Microphone Gain -TR-200

-31-

INTERCOM GAIN

If the audio volume, at the intercom, is too high, the LED will be illuminated when the person on the intercom is talking. Decrease the gain until the LED does not illuminate while talking at normal volume. Occasional flashing of the LED is allowable.

AUXILIARY GAIN

If the audio volume, at the auxiliary output, is too high, the Aux LED will be illuminated when the person on the auxiliary is talking.

Decrease the auxiliary gain until the auxiliary

LED does not illuminate while talking at normal volume. Occasional flashing of the auxiliary LED is allowable. The auxiliary indicator has three states: OFF, HALF BRIGHT, AND

FULL BRIGHT. When the switch is “OUT”, the indicator is OFF. When the switch is “IN” it becomes HALF BRIGHT, and when the input compressor operates it becomes

FULL

BRIGHT.

OVERMOD

INDICATORS

Ext Intercom Aux Audio

GAIN

CONTROLS

Figure 40

Auxiliary Gain Controls

-32-

SYSTEM WALK-THRU

Now that you have successfully “set up” your

TELEX Wireless Intercom System and turned on any auxiliary equipment you are ready to test the overall performance by “Walking” the

TELEX system through the areas in which you will be using it.

Before you begin your walk-thru check the following:

TR-200 Battery Check.

Under normal conditions the portable carrier indicator LEDs on the BTR-200 should always be lit when portables are transmitting. “Weak

Signal” conditions will result in flashing of the

Carrier LED.

In 99% of all instances you will set up your

TELEX Wireless Intercom System, walk it through and achieve error-free performance. If in the rare instance your TELEX System does not “pass” during your walk-thru evaluation, refer to the last section of this manual which deals with System Troubleshooting.

Set microphone gain in both the TR-

200 and the BTR-200.

Check the push-to-talk switch is engaged in the Lock-to-talk position.

LED will be illuminated.

Only portable units to be used are enabled at the Base.

The “system walk-thru” can detect problems of weak signal strength caused by:

· Poor antenna location

· Wrong antenna for receiver and/or transmitter.

· RF “Trouble Spots”

· Operating distance beyond system capability.

· Old or used batteries in the TR-200

-33-

TROUBLESHOOTING

Reread the sections of this manual to make sure you have completed system set-up properly

If you are unable to solve the problem, contact the dealer from whom you purchased the system for assistance.

PROBLEM

DISTORTION - System’s audio quality seems distorted at medium to high input levels.

HISS - System seems to produce a “hiss” which is undesirable.

LOW OUTPUT - System produces a low output level.

FEEDBACK - Moving around area of use produces “squeal” or “howl” in various locations using ext. speakers.

DROPOUTS - When moving around the area of use there seems to be locations where the signal “swooshes” or completely disappears.

INTERFERENCE - System picks up signals other than wireless Intercoms.

NO AUDIO from BASE or BELTPACK headsets.

SOLUTION

Reduce microphone gain by adjusting microphone gain control.

Check the gain setting on all beltpacks and the base. They may be too low.

Check the gain setting on both the beltpacks and the base. They may be too low.

Reduce the gain settings on both the beltpacks and the base. They may be too high.

Make sure both antennas on the base are connected and follow the location suggestions. Change the location of the base unit and antennas or avoid the bad areas with the remote beltpacks.

Make sure Telex TR-200 beltpack is turned on - this will usually eliminate the interfering signal. If not using a beltpack, make sure the corresponding enable switch at the base is disengaged.

If problems persist with the TR-200 beltpack on, you will probably need to have your system’s frequency changed to another channel.

Check Transmitter switch on base, use

CONT or REMOTE position. Check push-to-talk function - is the switch ON.

-34-

BATTERY INFORMATION

GENERAL

Improper battery selection, use, installation and care are the cause of numerous wireless system failures.

Alkaline Batteries: Alkaline batteries such as

Mallory’s

DURACELL or Eveready’s ENER-

GIZER provide the most reliable operation in wireless transceivers. The use of low cost carbon-zinc batteries is NOT recommended.

Nickel-Cadmium Batteries: These batteries can save you money in the long run, as they can be recharged, but they can also cause disappointing wireless performance. Typical battery life is one fourth or less of the alkaline battery. If you want to use rechargeable nickel-cadmium batteries you must select a heavy duty nickel-cadmium (NEDA 10015 or equivalent)

BC-4 BATTERY CHARGER

Remove the battery holder from the TR-200.

NOTE: The BC-4 is not supplied with the

TR-200. See “Accessory” Section for ordering information.

CAUTION

DO NOT ATTEMPT TO CHARGE

ANY ALKALINE BATTERIES WITH

THIS CHARGER. THIS CHARGER IS

TO BE USED WITH NICKEL CAD-

MIUM BATTERIES USED IN THE

TR200 BATTERY HOLDER ONLY.

Snap the terminal connector onto the battery holder and plug the charger into a 110 Volt outlet.

Full charge of the battery pack is obtained after

14 to 16 hours. A full charge will last 8 to 10 hours.

Extensive over-charging may damage or destroy the batteries. Please ensure the charging time does not exceed 16 hours.

Figure 41

BC-4 Battery Charger

ENERGIZER® is a registered trademark of Union Carbide Corporation.

DURACELL® is a registered trademark of Duracell Inc.

-35-

RECOMMENDED HEADSETS

V-Series

Catalog No. for V-200 Double sided headphone ...................................................... 300027-000

Catalog No. for V-210 Single sided headset with boom ............................................300027-001

Catalog No. for V-220 Double sided headset with boom...........................................300027-002

Earphone Frequency Response .............................................................................10 Hz - 20 kHz

Earphone Input Sensitivity ....................................................................................90dB @ 1 mW

Microphone Frequency Response

Dynamic (MB-11) ............................................................................... 50 Hz - 15 kHz

3 dB

Electret (MB-12) ................................................................................. 20 Hz - 20 kHz

3 dB

Microphone Input Sensitivity (re: 1 volt/mbar)

Dynamic (MB-11)...........................................................................................................-87 dB

Electret (B-12) ................................................................................................................-84 dB

Impedance

Earphones:..................................................................Mono 150 or 600

; Stereo 75 or 300

Microphones ...................................................................................................................150 W

Size H-W-D..............................................................8" (203 mm) x 9" (228 mm) x 4" (102 mm)

Weight

V-200 double-sided headphone:........................................................... 14 ounces (396 grams)

V-210 single-sided headset: ...............................................................10.5 ounces (298 grams)

V-220 double-sided headset: ...............................................................15.5 ounces 439 grams)

PH-1

Catalog No....................................................................................................................64438-005

Earphone Type .....................................................................................................Dynamic/Single

Earphone Impedance......................................................................................................150 ohms

Earphone Frequency Response................................................................................50-15,000 Hz

Earphone Output ................................................................................................................105 dB

Microphone Type................................................................................Dynamic Noise Cancelling

Microphone Impedance..................................................................................................150 ohms

Microphone Frequency Response............................................................................100-8,000 Hz

Microphone Output ......................................................................-83 re: 1V/microbar (.071 mV)

Cable Length....................................................................................................6 ft. (1.8 m) coiled

Cable Connector.............................................................................................Female XLR-4 type

PH-2

Catalog No....................................................................................................................64437-006

Earphone Type.............................................................................................Dynamic/Dual/Mono