Twisted Pair Outputs; Connections: Multi Camera Twisted Pair Telemetry Connections; Mixed Coax And Twisted Pair System - Dedicated Micros Dennard DTX1000 Manuel D'installation

4. TWISTED PAIR OUTPUT
The Twisted Pair output sends telemetry signals from the transmitter to the receiver. A video cable
connection is still required. The twisted pair option is normally used to connect a non cable
transmission system i.e. fibre, microwave etc.
The twisted pair option provides a 20mA compatible output, 1200 baud 8 data bits 1 stop bit even
parity.
VERTICAL GREEN CONNECTOR ON REAR
OF THE Dennard dtx1000 BASE UNIT
NOTE: THE UNITS WILL STILL WORK IF THE CABLES ARE REVERSED
Connections: Multi Camera Twisted Pair Telemetry Connection
Mixed Coax and Twisted Pair Systems
The Dennard dtx1000 Series of Transmitters copes automatically with a mixture of coax and twisted
pair connected receivers, directing the telemetry signal to the relevant interface. The only
requirement is that the installer should connect the twisted pair cable to the telemetry output
corresponding to the video output.
To Suppress Coax Signal
When it is required to remove the coax telemetry signal from a static camera, i.e. no telemetry
required at all, install a 470© resistor across the relevant twisted pair output contacts. Often fibre
optic equipment dislikes having a telemetry signal on its output, as it can upset the AGC.
Dennard DTX1000 Installation Manual
CAMERA 2, 3, 4 etc.
VIDEO CABLE STILL REQUIRED
GREY CONNECTOR ON THE RECEIVER
PRINTED CIRCUIT BOARD PINS 1 AND 2
Fit a 470 ohm resistor to supress
telemetry signal on static cameras
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