Agilent Technologies 8590L Service Manual page 244

Verify the sweep ramp
1. Verify the sweep ramp by pressing:
Before a successful frequency calibration is performed, the ramp will
NOTE
not be corner to corner, but will have some overshoot or undershoot.
2. Change the analyzer sweep time.
It is recommended that all sweep times be checked due to the A7 analog
NOTE
interface board assembly operating differently for the different RC
combinations. This can result in the analyzer appearing to operate
properly in one sweep time and not in another.
Figure 4-12 Typical Sweep Ramp Display
Chapter 4
, 10, ,
SPAN MHz CAL
,
SERV DIAG More 1
• If the signal trace is similar to
functioning properly.
• If the signal is not similar suspect the A7 analog interface board
assembly. Refer to
troubleshooting the A7 board assembly.
Using the Internal Service-Diagnostic Routines
, , More 2 of 4,
More 1 of 4
, ,
More 2 SWEEP RAMP
Figure 4-12
Chapter 6 for further information about
Troubleshooting the Analyzer
the sweep ramp is
245