HP 8447D Operation And Service Manual page 18

Page 14
Model 8447D/E/F
PERFORMANCE TESTS
56. VSWR (Cont.)
5. Measure return loss at amplifier OUTPUT (terminate INPUT with 50 ohms). The measured
return loss should be greater than 8.8 dB.
OUTPUT VSWR, 1 to 110 MHz:- 8.8 dB ..
NETWORK ANALYZER
IK
Figure 6. VSWR Test Setup: 0.11 to 1.3 GHz
6. Connect the equipment as shown in Figure 6. Set the sweep oscillator for a leveled CW signal,
sweeping from 110 to 220 MHz. Connect the power meter to s-parameter test set INPUT PORT A
and set the generator/sweeper's output level for —15 dBm as read on the power meter.
7. Disconnect the power meter from the test set and connect a short to INPUT PORT A (measuring
Six at INPUT PORT A). Calibrate the analyzer for a 0 dB return loss reference on the display (use
the center horizontal graticule line). Note TEST CHANNEL GAIN at the reference:
Reference TEST CHAN. GAIN, 110 to 220 MHz: dR
8. Disconnect the short from INPUT PORT A. Terminate amplifier OUTPUT with 50 ohms.
Connect INPUT PORT A to amplifier INPUT.