User's Manual

VTX5900 Transmitter Inputs & Controls:

1. POWER INPUT

Accepts a 6-12 Vdc power source such as the standard 7 Vdc adapter (Trango part

number PT07800-1), or an optional battery. The nominal current draw is 200

milliamperes. If using an adapter from a third party, use a well-regulated 300 mA

minimum output supply. Do not use the PT07800-1 to power a camera or video

distortion may occur.

2. ALARM INPUTS

These inputs are used to send alarm signals to the receiver. They sense an open or

closed state and reflect that state to the receiver whenever it changes. The alarm

inputs operate independently of each other. The transmitter is capable of sending

either alarms or stereo audio, selectable via the Stereo/Alarm switch.

3/4. RIGHT & LEFT AUDIO INPUTS

Designed to mate to standard RCA connectors, each input accepts 1 Vpp audio input

and is terminated with 600Ω unbalanced configuration. It is designed to interface to

“lineout” audio sources. A preamplifier must be used to connect a microphone to this

input.

5. STEREO/ALARM SWITCH

When this switch is in the “R Audio On” position, stereo audio transmission is

enabled. This permits the transmission of stereo audio with no data or alarms. When

it is in the “Alm/Data Mode On” position, R audio is disabled. In its place, either

alarms or user data (Data Pass-Through mode) are transmitted.

6. DATA INTERFACE

When connected to a personal computer via the optional CBLDAT-1 interface cable,

this input accepts serial commands that control settings in the transmitters not

available on the front panel. See the TrangoLink software section and program help

for more information. This is also the input for the RS-232 user data to be sent in

Data Pass-Through mode.

7. VIDEO INPUT

Designed to mate to a standard BNC male connector, this input accepts 1Vpp video

in both NTSC and PAL formats. This input is terminated with 75Ω. RCA-BNC

adapters are available for use with some cameras and VCRs.

8. TOGGLE/STANDBY

Depressing this switch momentarily changes the transmitter channel. Remember to

change the receiver channel as well, since it is not automatically changed when the

transmitter channel is changed. Holding the button down for 2 seconds places the

transmitter in Standby mode.