Agilent Technologies N5242A Service Manual page 102

Troubleshooting
Measurement System Troubleshooting
All Traces
• If all traces are missing in all bands, the problem is most likely in the source group.
However, a missing or disabled DSP driver may exhibit the same or similar symptoms.
To verify that this DSP driver is present and enabled:
1. Press UTILITY
click the down arrow and then click
window, click the right mouse button and then click Properties
menu.
Click the
Hardware
the resulting list. The following entry should be listed:
and should be enabled.
Driver #2
2. If the entry is not present or if the icon to the left of the name is a yellow box
containing an exclamation mark (!), navigate the following directories and verify the
presence of the following file: C:\WINNT\system32\drivers\spampnp.sys.
3. If you have verified that the DSP driver is present and enabled, but all traces are
still missing in all bands, go to
• If the trace faults are band-related, the problem is in the source group. Go to
"Source Group Tests" on page 4-29
problems seen.
R Trace Only
A problem that affects only the R trace is isolated to the receiver group assemblies. Go to
"Checking the Receiver Group" on page
A Trace Only
If the trace is missing in all bands, go to
B Trace Only
If the trace is missing in all bands, go to
C Trace Only
If the trace is missing in all bands, go to
D Trace Only
If the trace is missing in all bands, go to
A, B, R1, and R2 Traces Only
The problem is in the source 1 group, go to
trace is missing in all bands, go to
C, D, R3, and R4 Traces Only
The problem is in the source 2 group, go to
trace is missing in all bands, go to
4-28
, then Configure
System
My Computer.
tab, click
Device Manager
"Checking the Source Group" on page
and perform the tests that correspond to the
4-37.
"Checking the Signal Separation Group" on page
"Checking the Signal Separation Group" on page
"Checking the Signal Separation Group" on page
"Checking the Signal Separation Group" on page
"Checking the Source Group" on page
"Checking the Signal Separation Group" on page
"Checking the Source Group" on page
"Checking the Signal Separation Group" on page
PNA Series Microwave Network Analyzers
, then Control Panel...
an open area of the My Computer
n
in the resulting pop-up
, and then expand
Agilent Technologies DSP
Service Guide N5242-90001
N5242A
. In the box,
Address
in
Network Adapters
4-29.
4-33.
4-33.
4-33.
4-33.
4-29. If the
4-33.
4-29. If the
4-33.