U3042AM08
Service Information
RF Performance Fails
If the U3042AM08 operates correctly, but RF performance fails the Signal Path
test. Refer to the
“U3042M08 Block Diagram” on page 7
to determine the
components that will need to be inspected further. The following procedures can
be used to isolate the failed component. Suspect the internal coax switches, RF
cables, or coupler.
NOTE
The RF performance of the U3042AM08 depends on the performance of the analyzer.
Ensure the analyzer is meeting specification before continuing.
1.
Verify that the test set and analyzer SOURCE, RCVR, CPLR THRU, and CPLR ARM
connectors are clean and that the center pins are not damaged.
2.
Verify the interface and internal RF cables are cleaned and not damaged.
“Verifying Cal Kit Operational Check Failure” on page
Table 2
7
Connect the RF Flex cables to the Source IN and CPLR THRU port indicated in
, the expected results should be similar to
.
Source Bypass Signal Path Test Instructions
Path
#
Test Port
Group
RF Path Description
Control Mode
<Address>.<Data>
Path
Components
1
Port 5 and 9
Source IN to CPLR THRU
0.0
S10
2
Port 6 and 10
Source IN to CPLR THRU
16.0
S20
3
Port 7 and 11
Source IN to CPLR THRU
32.0
S30
4
Port 8 and
12
Source IN to CPLR THRU
64.0
S40
Table 2
8
Connect the RF Flex cables to the Source IN and CPLR ARM port indicated in
, the expected results should be similar to
.
Receiver Bypass Signal Path Test Instructions
Path
#
Test Port
Group
RF Path Description
Control Mode
<Address>.<Data>
Path
Components
1
Port 5 and 9
RCVR OUT to CPLR ARM
0.0
S11
2
Port 6 and 10
RCVR OUT to CPLR ARM
16.0
S21
3
Port 7 and
11
RCVR OUT to CPLR ARM
32.0
S31
4
Port 8 and
12
RCVR OUT to CPLR ARM
64.0
S41
Keysight U3042AM08 User's and Service Guide
91
Содержание U3042AM08
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