HP 4395A - Page 46

5. HARMONICS/NON-HARMONIC SPURIOUS TEST (NA)
Description
This test sets the HP 4395A RF OUT signal power to +10 dBm and uses a spectrum analyzer to
measure the RF OUT signal's second,third and non harmonic spurious at several frequencies.
The RF OUT signal frequency is set to values where harmonics and non-harmonic spurious are
most likely to be observed.
Specication
Spectral Purity Characteristics
Harmonics
@+10 dBm output ::: ::::: :::: ::::: :::: ::::: :::: ::::: :::: :::: ::::: :::: ::::: :::: :: < 0 30 dBc
Non-harmonics spurious
@+10 dBm output ::: ::::: :::: ::::: :::: ::::: :::: ::::: :::: :::: ::::: :::: ::::: :::: :: < 0 30 dBc
Test Equipment
Spectrum Analyzer ::::: :::: ::::: :::: :::: ::::: :::: ::::: :::: ::::: :::: ::::: :::: ::::: :::
HP 8566A/B
Type-N Cable,61cm ::: :::: ::::: :::: ::::: :::: :::: ::::: :::: ::::
HP 11500B or part of HP 11851B
BNC cable, 122 cm :::: ::::: :::: ::::: :::: ::::: :::: ::::: :::: :::: ::::: :::: ::::: :::: ::
PN 8120-1840
Procedure
1. Connect the test equipment as shown in Figure 2-6.
Figure 2-6. Harmonics Test Setup
Note
Connect the spectrum analyzer's 10 MHz frequency reference output to the
HP 4395A EXT REF Input on the rear panel as shown in Figure 2-6. With this
conguration, both the spectrum analyzer and the HP 4395A are phase locked
to the same reference frequency to eliminate frequency oset errors
.
2-14 Performance Tests