Test Equipment And Connections; Measuring Forward Gain; Figure 4-1 Test Equipment Connections For Bench Sweeping - Motorola BLE100 Installation And Operation Manual

4-2 Bench Testing

Test Equipment and Connections

The equipment typically used for testing the BLE100 consists of a network analyzer such as the
HP 8712 or 8713 series, a 60/90 Vac bench power supply, a cable simulator, a Motorola model
SSP-PIN power combiner, and a variety of jumper cables, adapters, and fittings.
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.
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
analyzer
117
Vac
CAUTION!
Before you begin the following subsection, remove the input pad,
apply power.

Measuring Forward Gain

This subsection provides instructions for measuring the full gain and the operational gain and
flatness of the BLE100.
To measure the full gain of the amplifier:
1
Determine whether the power-supply jumper (J1) is positioned for
2
Connect the BLE100 to the test equipment as illustrated in Figure 4-1 and apply power.
Verify that the dc voltage is 24 V ± 0.4 V and re-install the input pad.
3
4
Apply the sweep signal and adjust test equipment as needed.
5
Select manual gain by placing the drive control select jumper in the
the control (Figure 2-8) fully clockwise.
MANUAL LEVEL
BLE100 Installation and Operation Manual
Cable Power
simulator combiner
60/90 Vac
AC power
Sweep
supply
input
BLE100
under test
2
4 6
M
5 3
1
Sweep
output
- , to avoid damage to the hybrids before you
JXP IN
or operation.
LO HI
position and turn
MAN