User's Manual

1. stops transmitting over the air by shutting down the majority of its circuitry

to save power,

2. periodically and momentarily powers up and transmits over the air, and

3. waits to be returned to Normal mode by one of the following:

• an open condition on the Alarm 1 input,

• the Toggle/Standby switch, or

• the TrangoLink software.

To exit Power Save Standby mode, momentarily press the Toggle/Standby switch, or use

the TrangoLink software. After exiting Power Save Standby mode, the active channel

LED will be on solid to indicate that the transmitter is now continuously transmitting

again. If the Power Save Timer is still enabled, the radio will go back to Power Save

Standby when it times out again.

Data Pass-Through Mode:

The transmitter and receiver can be used to pass data at rates from 1200 to 9600 bps.

(For optimum data transmission without losses, both the transmitter and receiver

should be configured to pass or accept data at the same rate. The data rate and parity

are configured using the TrangoLink software.) To enter Data Pass-Through mode,

the illustrated switch should be placed in “Alm/Data Mode On.” Then, from the

TrangoLink software, select “Pass-Through Mode.” Make sure both the VTX5900

and the VRX5900 have been configured for Data Pass-Through mode. The Right

Audio channel will be disabled in this mode while the Left Audio channel can still

transmit monaural audio. Alarms and Link Verification cannot be transmitted when

in Data Pass-Through mode. Do not use CBLDAT-1 to send or receive data since it

contains extra wires not used for normal data transmission.

Figure 3 displays the pinout diagram to connect to the RJ11 Data connector for RS-

232 data pass-through.

To pass simplex (one way) RS-485 or RS-422 format serial data, use the LC485/422

available from your dealer. If using the LC485/422 converter, the data connector

must not be connected to any cabling.

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PIN NUMBER

DATA connector

RJ11 - 6 position

VIDEO connector

RIGHT and LEFT

audio connectors

3456

PIN NUMBER DESCRIPTION

1 Reserved -- DO NOT USE

2 RS-232 Serial Data In to Radio

3 GND

4 Reserved -- DO NOT USE

5 RS-232 Serial Data Out to PC

6 Reserved -- DO NOT USE

• FIGURE 3 •