Harris Ranger Series, Commissioning Manual

Page: 42 / 162

2-16 888-2685-001 12/24/07
WARNING: Disconnect primary power prior to servicing.
Section 2 Installation Verification &
Ranger Commissioning Manual
2.11.1.1 Verify Exciter Signal Connections
Most of the input and output connections are at the rear of the exciter, only the RS232
connections are available at the front and rear. Figure 2-9 shows the rear panel
connections.
Figure 2-9 Exciter Inputs and Outputs
ASI #1 and or ASI #2 are connected to the exciter for the low and high priority ASI
transport streams. For best common mode rejection, this cable shield should be
grounded only at the source end.
The input impedance for each connector is 75 ohms. Belden 8281 or similar high-
quality video cable can be used to deliver this signal to the exciter over a distance of up
to 1000 feet.
ASI OUT is a sample output of the active transport stream. It should not have a cable
connected to it unless specified locally.
ANT (GPS antenna input) connector should not have a cable attached since the GPS
receiver is an option and not present in most Mobile exciters.
10MHZ REF IN (BNC) is optional and normally not used in a Mobile system.
1PPS (1 pulse per second input from the GPS receiver) should have a cable connected
to it that comes from the GPS receiver.
HPF RF SAMPLE IN (SMA) has a cable connected to it that comes from the output of
high power mask filter. It is used by RTAC™ (Real Time Adaptive Correction) to
correct for the linear distortions of the high power filter. Normal input signal range is -
30 dBm to 0 dBm. The input impedance is 50 ohms.
AC Power
Off/On Switch