6-24
Performance Tests – Option 011
8. Receiver Phase Frequency Response
In Case of
Difficulty
1Suspect poor tracking between the ports of the power splitter if all receiver
inputs fail. Try to repeat the test with another power splitter.
2Suspect source drift if receiver inputs A and B fail this t est at any frequency.
Connect the equipment as shown in Figure 6-10 (or Figure 6-11), se t the
analyzer source power at the frequency of interest. Repeat the test for the
receiver input(s) that failed before.
3Perform the “Sampler Magnitude and Phase Correction Constants (Test 53)”
procedure, located in the “Adjustments and Correction Constants” chapter of
the Agilent 8753D Option 011 Service Guide. Repeat this performa nce test.
4Consult the Agilent 8753D Option 011 Service Guide for further
troubleshooting information.
8. Receiver Phase Frequency Response
Perform this test to determine the phase tracking frequency respon se for each
pair of inputs (A/R, B/R and A/B) in the swept sweep mode.
Required
Equipment
3-way Power Splitter, 50Ω. . . . . . . . . . . . . . . . . . . . . . . . . . . . .Agilent 11850C
Attenuator, 10 dB. . . . . . . . . . . . . . . . . . . . . . . . . . . Agilent 8491A Option 010
RF cable set, 50Ω, Type-N . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Agilent 11851B
RF cable, 50Ω, Type-N. . . . . . . . . . . . . . . . . . . . . . . . . . Agilent P/N 8120-4781
Adapter, Type-N (m) to Type-N (m) . . . . . . . . . . . . . .Agilent P/N 1250-1475
Procedure
1Connect the equipment as shown in Figure 6-12.
NOTE
The final results represent the worst case magnitude frequency response for all the ana-
lyzer receiver inputs at the selected frequencies.