Harris ATLAS ANALOGUE, Manual

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2-38 888-2523-001 7/26/05
WARNING: Disconnect primary power prior to servicing.
Section 2 Installation / Initial Turn-On
ATLAS Analogue
2.14 Parallel Remote Control Connections
Once proper operation of the transmitter has been initiated, remote control connections
can be made. The following tables list the connectors and their corresponding signal
names and functions.
NOTE:
To access the External I/O board connections, turn the knob on the right side of
Control Panel counter clockwise. This will allow the panel to swing open right-
to-left. There is knob on the chassis that the External I/O board is mounted on.
Pull this knob upwards and pull the I/O board towards you, being watchful of all
cables as the chassis slides forward.
External Parallel remote control units can interface at the External I/O Board in the rear
of the cabinet. J13 through J17 are for remote Control, Status and Analogue readings.
The connectors are organized as follows:
•
J13 and J14 - Remote Transmitter Control Functions
•
J15 and J16 - Remote Status Outputs
•
J17 - Remote Analogue Metering Outputs
NOTE:
The forward slash ( / ) in front of a signal name means active low. The signal
named "/INPUT 1" for example is activated by momentarily bringing that input
low. Signal names without the forward slash are considered active high. This con-
vention is used throughout the schematics.
2.14.1 Transmitter Control Functions, J13 and J14
All control inputs use opto-isolators for surge protection. The opto-isolators are
powered by an in5Vdc from an isolation protection circuit, U54.
All transmitter control functions (except Remote RF Mute, RF Switch Position A and
RF Switch Position B, which are active LOW or HIGH level input states) are