Tx300 Telemetry Transmitter Installation Handbook Rev-03
Page 6
of
6
TWISTED PAIR OUTPUT
The TWISTED PAIR output sends telemetry signals from the transmitter to the receiver. A video cable connection is still
required. The normal reason for using a twisted pair option is to connect to a non-cable transmission system, fibre,
microwave etc.
The twisted pair output option provides a 20mA compatible output. 1200 baud 8 data bits 1 stop bit.
V
B B
1
2
3
4
5
6
7
8
IRIS
FOCUS
ZOOM
PRESETS
LENS
PAN
&
TILT
PROGRAM
AUTOPAN
#
Polarity not important at Rx.
Maximum cable resistance 330R
If RF/Laser/Microwave etc. used
to extend link, 20mA input may
be polarity sensitive.
Grey connector on Rx PCB, Pins 1 & 2
Section of Rx
Simple twisted pair telemetry when not practical to use up-the-coax telemetry.
A coaxial cable is required to carry the video from the camera to the control point.
If the Rx is over driven from the RF/
Laser/Microwave equipment, the error
LED will light. Connecting a 470R
resistor across Pin 1/2 cures problem.
Tx300/400/400DC
