Agilent Technologies N5230A Service Manual page 100

Troubleshooting
Measurement System Troubleshooting
To verify that this DSP driver is present and enabled:
1. Click My Computer,
. The following entry should be listed:
Adapters
should be enabled.
2. If the icon to the left of the name is a yellow box containing an exclamation mark (!),
use Windows Explorer to 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. Using
4-7 on page 4-39, note the frequency bands in which problems are seen. Go to
Group Tests" on page 4-36
bands in which the problems are seen.
R1 Trace Only
A problem that affects only the R1 trace is isolated to the A20 mixer brick or the A5 SPAM
board. Go to "Checking the Receiver Group" on page
R2 Trace Only
A problem that affects only the R2 trace is isolated to the A20 mixer brick or the A5 SPAM
board. Go to "Checking the Receiver Group" on page
A Trace Only
If the trace is missing in all bands, go to
page 4-42.
B Trace Only
If the trace is missing in all bands, go to
page 4-42.
4-30
, tab,
Properties Hardware
"Checking the Source Group" on page
and perform the band-specific tests that correspond to the
"Checking the Signal Separation Group" on
"Checking the Signal Separation Group" on
PNA Series Microwave Network Analyzers
. Expand
Device Manager
Agilent Technologies DSP Driver #2
4-45.
4-45.
Service Guide N5230-90014
N5230A
Network
and
4-31.
Table
"Source