HP 8447D Operation And Service Manual page 17

Model 8447D/E/F
Page 13
PERFORMANCE TESTS
56. VSWR (Cont.)
Equipment (Cont.):
Phase-Magnitude Display . . -
Harmonic Frequency Converter
S-Parameter Test Set ....
Universal Extension ....
Transmission Kit .....
Accessory Kit .......
Cable Assembly (3) . . . . .
Cable Assembly ......
HP 8412A
HP 8411A
HP 8745A
HP 11604A
HP 11651A
HP 11570A
HP 10503A
HP 11500A
Procedure:
1. Connect the equipment as shown in Figure 5. Set the generator/sweeper for a —10 dBm signal,
sweeping from 1 to 110 MHz.
2. Connect the short to the directional bridge and calibrate tjie network analyzer for a 0 dB return
loss reference on the display (use the center horizontal graticule line).
3. Remove the short from the directional coupler, attach the coupler to amplifier INPUT (terminate
OUTPUT with 50 ohms).
4. Decrease the display reference level to —10 dB (the center horizontal graticule line now repre¬
sents a return loss of 10 dB). The measured return loss should be as shown below:
INPUT VSWR, 1 to 110 MHz:
8447F PREAMP, >9.6 dB: 9.6 dB___
8447D, >9.6 dB: 9.6 dB
8447E, >8.8 dB: 8.8 dB
8447F POWER AMP, >8.8 dB: 8.8 dB.