HP 4395A - Page 104

20. OTHER SPURIOUS (SA)
Description
This test measures the level of spurious signals generated by causes other than the second
harmonic distortion and the third order intermodulation distortion.
This test applies several CW frequency signals to the HP 4395A R input and then measures
the spurious signal level at a frequency range where the spurious signal is most likely to be
observed.
Specication
Other spurious
@input signal freq.  500 MHz :::: ::::: :::: ::::: :::: ::::: :::: ::::: :::: :::: ::::: :::< 0 70 dBc
1
1: single tone input with full scale input 0 10 dB, RBW  100 kHz, 1 kH  freq. oset  300 MHz
Test Equipment
Signal Generator ::::: :::: :::: ::::: :::: ::::: :::: ::::: :::: ::::: :::: ::::: :::: :::: ::::: :::
HP 8663A
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 2-29.
Note
Connect the signal generator's 10 MHz frequency reference output to the
HP 4395A EXT REF Input on the rear panel as shown in Figure 2-29. With this
conguration, both the signal generator and the HP 4395A are phase locked to
the same reference frequency to obtain a stable measurement.
2-72 Performance Tests