Agilent Technologies N5230A, Service Manual, Page: 109 / 262

Service Guide N5230-90014 4-39
PNA Series Microwave Network Analyzers Troubleshooting
N5230A Measurement System Troubleshooting
2. If the signal is not present, replace the A7 fractional-N synthesizer board. Refer to
“Removing and Replacing the A5 through A10 Boards” on page 7-16 .
3. If the signal is present, reconnect cable W1, and then continue with “Checking the A6
Multiplier Output, All Bands” on page 4-40 .
Table 4-7 LO Path Frequencies
Band
Network Analyzer
Frequency Band of
Problem (GHz)
Network Analyzer
Source Frequency
Setting (GHz)
Expected A7 Output
Frequency (GHz)
a
a. With the analyzer’s spur avoidance function OFF.
Expected A6 Output
Frequency (GHz)
a
0 .0003 to 0.001 0.0007 0.0084 0.0084
1 0.001 to 0.010 0.006 0.014 0.014
2 0.010 to 0.040 0.030 0.038 0.038
3 0.040 to 0.748 0.400 0.408 0.408
4 0.748 to 1.500 1.200 1.208 1.208
5 1.500 to 3.125 2.300 2.308 2.308
6 3.125 to 4.167 3.600 1.804 3.608
7 4.167 to 5.250 4.800 2.404 4.808
8 5.250 to 6.250 5.800 2.904 5.808
9 6.250 to 8.333 7.300 1.827 7.308
10 8.333 to 10.500 9.500 2.377 9.508
11 10.500 to 12.500 11.500 1.918 3.836
12 12.500 to 13.500 13.000 2.168 4.336