HP 8642A - Page 293

Model 864 2A/B
Performance Tests
PERFORMANCE TESTS
OSCILLOSCOPE
SPECTRUM
ANALYZER
INPUT INPUT
o CJ 0 I
10
o 8 B BB 8B838 00 8
0
AF
00000 Bel 888aB 0 0
OUTPUT
Rt MIXER
x
1 MHz
I
LPF
I
HP 8642A1B
L
SYNTHESIZED
SIGNAL GENERATOR
FM INPUT
OUT
EQUIPMENT:
PROCEDURE:
AF
SIGNAL
~
LOW-NOISE AMP
GENERATOR
OUTPUT
Figure 4-12. SSB Phase Noise Test Setup (Optional)
Mixer ............................... HP 10514A
1 MHz Low Pass Filter .......... (See Figure I-I)
Low-Noise Amplifier ............ HP 08640-60506
W IPower Supply HP 6216A
Spectrum Analyzer ................... HP 8566A
Oscilloscope ........................ HP 1 98 OB
LO ................................... HP 8642B
1. Connect the instruments as shown in Figure 4-12. On the LO, select
external DC FM and 1 kHz FM deviation. Insure that the spectrum
analyzer center frequency calibration is accurate.
NOTE
The following symbols are used in the procedure:
fRF = the RF output frequency where SSE phase
noise
will be checked.
fOFF = the frequency offset from fRF where SSE
phase noise
will be checked.
2. Set the LO's frequency to fRF and the output level to + 16 dBm. Set
the HP 8642 under test to fRF + fOFF and the output level to -50
dBm.
4-43