HP 8642A - Page 285

Model 8642A/B
Performance Tests
PERFORMANCE TESTS
4-13. SPURIOUS TEST
SPECIFICA TION:
DESCRIPTION:
EQUIPMENT:
PROCEDURE:
Electrical Characteristics Performance Limits ConditiDns
Non harmonic spurious
100
dBc band HET-9
94
dBc band 10
The RF output of the HP 8642 is viewed on a spectrum analyzer. The
8642's frequency is set to values where spurious performance problems are
most likely to be observed.
10 MHz
o 0 0 I 10
OUTPUT
000 ~D~ §§ §§§§§ 0 ~D
RF OUTPUT
HP 8642A/B SYNTHESIZED
SIGNAL GENERATOR
EXTERNAL
REFERENCE
SPECTRUM
RF INPUT
ANALYZER
Figure 4-9. Harmonics and Spurious Test Setup
Spectrum Analyzer ................... HP 8566A
1.
Perform a center frequency calibration on the spectrum analyzer.
2. Connect the instruments as shown in Figure 4-9.
3. Set up the spectrum analyzer as follows:
INSTRUMENT PRESET
SPAN 0 kHz
RESOLUTION BANDWIDTH
10Hz
4. Set up the HP 8642 as follows:
INSTRUMENT PRESET
4-35