Telex BTR-300 operating instructions System WALK-THRU, Intercom Gain, Auxiliary Gain controls

Page 31

INTERCOM GAIN

If the audio volume at the intercom input is too high, the light will be illuminated when the person on the intercom is talking. De- crease the gain until the light does not illumi- nate while talking at normal volume. Occasional flashing of the light is allowable. See Figure 36.

OVERMODULATION

INDICATORS

Ext Intercom Aux Audio

Figure 36

Auxiliary Gain controls

AUXILIARY GAIN

If the audio volume at the auxiliary input, is too high, the Aux light will be illuminated when the person on the auxiliary is talking. Decrease the auxiliary gain until the auxiliary light does not illuminate while talking at nor- mal volume. Occasional flashing of the auxil- iary light 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 in- put is overmodulated it becomes FULL BRIGHT.

SYSTEM WALK-THRU

Now that you have successfully “set up” your RadioCom Wireless Intercom System and turned on any auxiliary equipment you are ready to test the overall performance by “Walking” the RadioCom system through the areas in which you will be using it.

Before you begin your walk-thru check the following:

TR-300 Battery Check.

Set microphone gain in both the TR-300 and the BTR-300

Check that the push-to-talk switches are engaged in the Lock-to-talk position and the light is illuminated.

Portable units to be used are en- abled 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 trans- mitter.

￿RF “Trouble Spots”

￿Operating distance beyond system capability.

￿Old or used batteries in the TR-300

Under normal conditions the Portable Trans- mit On lights on the BTR-300 should always be lit when portables are transmitting. “Weak Signal” conditions will result in flashing of the Transmit light.

In 99% of all instances you will set up your RadioCom Wireless Intercom System, walk it through and achieve error-free performance. If in the rare instance your RadioCom System does not “pass” during your walk-thru evalu- ation, refer to the last section of this manual which deals with system troubleshooting.

-29-

Image 31
Contents Telex Table of Contents Introduction Block Diagram of SystemGeneral Description Page BTR-300 Base Station Transceiver Technical Information Specifications BTR-300Receive FeaturesCrophone Gain Portable Enable Switches and IndicatorsFront Panel Refer to Figure Plug for Telex UnitPage Front Panel BTR-300 Rear Panel BTR-300 TR-300 BELT-PACK Transceiver Technical Information Specifications TR-300Controls and Connections Jack for RTS Units Headset XLR Connector WiringPlug for Telex Units External Controls, TR-300 Dynamic / Electret BTR-300 SET-UP Equipment SET-UPInternal Intercom Switches Pin Wiring for Rear Panel JacksAttaching Brackets for Rack Mounting Rack MountingAntenna Information Attaching 5/8-wave Antenna Wave Antenna AssemblyAntenna Connections FT 60cm Minimum distance FT 2m Or more Is best Remoting Antennas when Rack MountedProper Dressing of the Antennas Antenna PlacementAntenna Polarization Vertically Polarized AntennasOperating System Near Obstructions BTR-300 Antenna PlacementTransmit Switch Headset Microphone Select SwitchLocal Headset Connection Typical Interface to Wired System Interconnection to a HARD-WIRED Intercom SystemPower Connection Connecting Auxiliary Audio SYS- TEMDummy Load Headset Connection DYNAMIC/ELECTRET SwitchBattery Installation TR-300 SET-UPPRE-WALK-THRU Checklist System Operation PowerLocal Headset Volume Push to TALK/LOCK-TO-TALK SwitchTR-300 Operation Battery CheckLow Battery/ Overmodulation Talk Indicator Lights Headset VolumePortable Transceivers Intercom SwitchEnable Switches Enabling AudioTR-300 Portable Setting System Gain LevelsAdjusting Gain BTR-300 Base StationAuxiliary Gain System WALK-THRUIntercom Gain Auxiliary Gain controlsProblem Solution TroubleshootingGeneral Battery InformationBC-300NM1 Battery Charger BC-300NM1 Battery ChargerBC-300NM2 Battery Charger BC-300NM2 Battery ChargerAccessories Customer Service Information FCC Information JAN Made in U.S.A
Related manuals
Manual 2 pages 14.81 Kb