Telex RadioCom TR-300 Bedienungsanleitung

Telex

Operating Instructions

PROFESSIONAL

WIRELESS

INTERCOM SYSTEM

TR-300, BTR-300

TABLE OF CONTENTS

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

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

BTR-300BASE STATION TRANSCEIVER.....................................3

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

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

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

TR-300 BELT-PACK TRANSCEIVER..........................................9

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

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

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

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

BTR-300SET-UP.........................................................13

ANTENNA INFORMATION................................................16

TR-300 SET-UP............................................................23

PRE-WALK-THRU CHECKLIST............................................24

SYSTEM OPERATION.....................................................25

BTR-300OPERATION....................................................25

TR-300 OPERATION......................................................26

ENABLING AUDIO.......................................................27

SETTING SYSTEM GAIN LEVELS.........................................28

SYSTEM WALK-THRU.....................................................29

TROUBLESHOOTING.....................................................30

BATTERY INFORMATION.................................................31

ACCESSORIES............................................................33

CUSTOMER SERVICE INFORMATION......................................34

FCC INFORMATION.......................................................35

-i-

INTRODUCTION

GENERAL DESCRIPTION

This manual covers the BTR-300Base Station

and the TR-300 Portable Transceiver.

The RadioComModels BTR-300and TR-300

were specifically designed to provide the user

with a highly flexible wireless two-way com-

munication system with the capability to inter-

face with a wired intercom system and other

auxiliary audio.

At the BTR-300operator’s command, the

remotesmay communicate with each other,

with a wired intercom system or with an auxil-

iary system. The BTR-300Base Station with

its one transmit and four receive channels is

designed to operate in full duplex (simulta-

neous two-way communications) with up to

four TR-300 Belt Pack transceivers. See block

diagram in Figure 1.

Figure 1

Block Diagram of System

-1-

The system operates on selected frequencies

within the 150-216 MHz band.

The BTR-300system is fully compatible with

a number of other wired intercom manufactur-

ers units. See the BTR-300Setup Section for

additional information.

The TR-300 Transceiver operates in the con-

tinuous transmit mode with the audio activated

by a switch. As many as four TR-300

belt-pack transceivers can operate in a fully

duplex network with one RadioComModel

BTR-300Base Station.

-2-

BTR-300BASE STATION TRANSCEIVER

TECHNICAL INFORMATION

-3-

SPECIFICATIONS BTR-300

Input Power (minimum).................................................................................... 12V AC/DC at 360 mA

Intercom Output......... 330 mV (Low) or 1 V (Hi) RMS into 300 ohm load typical (at rated deviation)

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

Auxiliary Output............................................. 2 V 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 mWTypical

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

FEATURES

The RadioComModel BTR-300isa Base

Station with one transmitter and four re-

ceivers. It is designed for portable two way

communication with the capability for inter-

face to other audio systems. Features include:

•An extremely flexible unit that has the capa-

bility to communicate at one time with up to

four portable stations and wired stations (in-

tercom and/or other audio source).

•Powered by an external AC supply via the

power jack on the rear of the unit. It can

also be powered by any 12V AC/DC 700

mA source.

•Intercom connections with the ability to in-

terface with most wired intercom systems.

•RF light indicator for each portable station.

•All metal case for superior shielding.

•Table or rack mountable.

-4-

SPECIFICATIONS BTR-300(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 MonolythicFilter)

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

CONTROLS and CONNECTIONS

FRONT PANEL (Refer to Figure 3)

Power ON/OFF Switch: Push this switch

once to turn power ON; push it again to turn

the power OFF.

Power ON Indicator: The Power ON light is

illuminated when the Power ON/OFF Switch

is pushed in the ON Position.

Local Headset Connector: 4 Pin XLRCon-

nector for Input/Output. The headset jack will

accept many Telex model headsets. Compati-

ble with other intercom headsets with four pin

XLRconnectors that are wired as shown in

Figure 2.

Figure 2

Headset XLRConnector Wiring

Local Headset Volume: Adjusts volume to

Local Headset. DOES NOT AFFECT MI-

CROPHONE GAIN.

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

Enables the local headset microphone audio

function.

NOTE: DOES NOT control base station RF

transmit.

Local Push-to-Talk Indicator: Will be illu-

minated whenever the talk function is on.

Local Microphone Gain Control and

OvermodulationIndicator: 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 whose operation is signaled by the

gain light 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 se-

lected remotesand interfaces. The indicators

(Portable Transmit On) normally show the

presence of a portable transceiver in use on the

channel corresponding to that indicator.

-5-

External Intercom Switch, Level Control,

and indicator:This switch enables the wired

intercom interface when “IN”, and disables it

when “OUT”. For RTS intercoms, the “IN”

position is channel 1 and the “OUT” position

is channel 2. A screwdriver adjustable control

is provided to control the input level of the

wired intercom.

Auxiliary Audio Enable Switch, Level Con-

trol, 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 and Receive Antenna Connectors:

Attach 5/8-wave antennas (supplied) to these

connectors; Antenna color should match the

“color dot.”

Transmit Switch:Slide switch that allows the

operator to select one of three transmit modes.

In the “OFF” position, the transmitter is al-

ways off. This mode may be used if the base is

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 “RE-

MOTE” 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

Electretor Dynamic microphone.

Intercom Connectors: Connections to inter-

face the BTR-300with a wired intercom sys-

tem.

Auxiliary Output/Input Connectors:Can be

used for 2-way (four wire) input and output to

the BTR-300or as a simplex input or output.

Typical uses are 4 wire intercom’s, tape re-

corders, public address inputs or outputs.

Power Jack: For external AC supply adaptor

(supplied).

Speaker Jack: Allows the use of an external

monitor if desired. An 8 ohm speaker is rec-

ommended.

Speaker Volume Control: Screwdriver ad-

justable. Adjust clockwise to increase speaker

volume or counterclockwise to decrease

speaker volume.

NOTE:Leave setting counterclockwise if no

speaker is attached.

-6-

-7-

-8-

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