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6-24
Performance Tests – Option 011
8. Receiver Phase Frequency Response
In Case of
Difficulty
1
Suspect poor tracking between the ports of the power splitter if
all
receiver
inputs fail. Try to repeat the test with another power splitter.
2
Suspect source drift if receiver inputs A and B fail this test at
any
frequency.
Connect the equipment as shown in Figure 6-10 (or Figure 6-11), set the
analyzer source power at the frequency of interest. Repeat the test for the
receiver input(s) that failed before.
3
Perform 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 performance test.
4
Consult 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 response for each
pair of inputs (A/R, B/R and A/B) in the swept sweep mode.
Required
Equipment
3-way Power Splitter, 50
Ω
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .Agilent 11850C
Attenuator, 10 dB . . . . . . . . . . . . . . . . . . . . . . . . . . . Agilent 8491A Option 010
RF cable set, 50
Ω
, Type-N . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Agilent 11851B
RF cable, 50
Ω
, Type-N . . . . . . . . . . . . . . . . . . . . . . . . . .Agilent P/N 8120-4781
Adapter, Type-N (m) to Type-N (m) . . . . . . . . . . . . . .Agilent P/N 1250-1475
Procedure
1
Connect 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.