Test Equipment And Connections; Figure 4-1 Test Equipment Connections For Bench Sweeping - Motorola STARLINE SERIES Installation And Operation Manual

4-2 Bench Testing

Test Equipment and Connections

The equipment typically used for testing the MB*/* consists of a network analyzer, such as the
HP 8711, 8712 or 8713 series, a model 1076 sweep comparator, and a model 1901C display or
equivalent. In addition, you need a 60/90 Vac bench power supply, a Motorola model SSP-PIN
power combiner, and a variety of jumper cables, adapters, and fittings.
Fabricate a cable simulator that you can configure to provide the desired cable loss in 1 dB
increments up to approximately 30 dB. Then, connect the test equipment as shown in
Figure 4-1:
Figure 4-1
Test equipment connections for bench sweeping
Network Sweep
analyzer comparator
CAUTION!
To protect the network analyzer and sweep comparator, you must configure the SSP-PIN power combiner to block ac
power from the input port
To preserve signal quality, verify that all unused ports are terminated.
CAUTION!
Before you begin the following subsection, remove the input pad (
the hybrids.
MB*/* Installation and Operation Manual
Cable
simulator
60/90 Vac
117
ac power
Vac
supply
.
Sweep
input
MB*/*
under test
IN
Power
combiner
3
- ) before you apply power to avoid damage to
JXP IN
Sweep
output
2
Display
4