Remote Control Installation - Harris ZX2500 Technical Manual

Section 2 Installation
> External interlock:
The external INTERLOCK A and B signal lines are available on pins 2 and 3 the 25-pin
REMOTE CONTROL connector at the rear of the amplifier chassis or on the remote
terminal board in larger models. The two interlock pins must be bridged to turn on the
ZX transmitter. In a preconfigured rack, the pins may already be bridged on the remote
terminal board at the time of delivery. Otherwise, they are typically bridged inside a
factory-supplied "dummy" D-sub 25 connector at the back of the amplifier chassis. The
external interlock can be connected to a pair of external contacts such as the thermal
cutout switch on the station test load.
> Emergency off:
In certain circumstances, the ZX transmitter system may be equipped with an optional
emergency shut off button. This button is typically a large red plunger/pushbutton
surrounded by a contrasting yellow border. The switch terminal connections of this
button may be connected to the external interlock connection described above or
brought outside the transmitter cabinet to an AC shutdown mechanism (e.g. contactor
or shunt-trip circuit breaker) in the customer's AC mains panel.

2.11 Remote Control Installation

The ZX series transmitter may be remotely controlled by one of three means:
•
Via a parallel remote control connection to the 25-pin REMOTE CONTROL connec-
tor on the amplifier chassis or the breakout terminals of the remote terminal board on
larger models.
•
Via an optional web remote interface available at an RJ45 Ethernet connection on
the amplifier chassis.
•
Via optional SNMP control also available at the RJ45 Ethernet connection.
The following section shows the location and pin assignment information for the major
remote control interfaces.
2-12
WARNING: Disconnect primary power prior to servicing.
888-2595-001
ZX Series
12/20/11