HP 8642A - Page 298

Performance Tests
4-48
Model 864 2A/B
PERFORMANCE TESTS
3. On/Off Ratio
Set
the spectrum analyzer scale to 10 dB/division. There should be a
broad
trace that covers the top half of the screen. The top of the
trace is the pulse on amplitude and the bottom is the pulse off
amplitude; determine the difference in level and verify that the value
is within the specified limits given in the table below.
RF
Results
Frequency
Min.
Actual
(MHz)
1000.0 30.0
2000.0
45.0