Agilent Technologies E8362C Service Manual page 113

PNA Series Microwave Network Analyzers
E8362C, E8363C, E8364C
6. If the 5 MHz signal is present, reconnect cable W31, and then continue with
Lock Reference Output, All Bands" on page
Checking the A10 Phase Lock Reference Output, All Bands
1. Refer to the block diagram at the end of this chapter and
page 6-16. Locate flexible cable W32 at the A10 frequency reference board.
2. Disconnect W32 from A10J5.
3. Connect the spectrum analyzer to A10J5.
4. Verify the presence of the 8.333 MHz phase lock reference output signal.
5. If the signal is not present, replace the A10 frequency reference board. Refer to
Replacing the A6, A8, A9, and A10 Boards" on page
6. If the signal is present, reconnect cable W32, and then continue with
Frequency Reference, All Bands" on page
Checking the 2nd LO at the A10 Frequency Reference, All Bands
Perform this procedure if a problem is in one of the receiver channels and appears to be a band related
problem.
1. Refer to the block diagram at the end of this chapter and to
page 6-16. Locate the flexible cable W29 at the A10 frequency reference board.
2. Disconnect the flexible cable W29 at A10J4.
3. Connect the spectrum analyzer to A10J4.
4. Verify the presence of the 33.1667 MHz signal at A10J4.
5. If the signal is not present, replace the A10 frequency reference board. Refer to
Replacing the A6, A8, A9, and A10 Boards" on page
6. If the signal is present, reconnect cable W29, and then go to
Outputs" on page 4-43.
Checking the A8 Fractional-N Synthesizer Band 0 and1 Output
1. Refer to the block diagram at the end of this chapter and to
page 6-16. Locate the flexible cable W20, at the A8 fractional-N synthesizer board.
2. Disconnect W20 from A8J101.
3. Connect the spectrum analyzer to A8J101.
4. Set the network analyzer for a 500 MHz CW frequency and observe the spectrum analyzer measurement.
• The spectrum analyzer should measure a signal at 508.33 MHz.
5. If the 508.33 MHz signal is not present and the 5 MHz reference signal is present from
A10 5 MHz Reference Output, All Bands,"
"Removing and Replacing the A6, A8, A9, and A10 Boards" on page
6. If the signal is present, reconnect cable W20, and then continue with
Synthesizer Band 2 Output" on page
Service Guide E8364-90038
4-33.
"Top Cables–All, All Options Except 080" on
7-18.
4-33.
"Top Cables–All, All Options Except 080" on
7-18.
"Checking the A31 through A34 Receiver
"Top Cables–All, All Options Except 080" on
replace the A8 fractional-N synthesizer board. Refer to
4-34.
Troubleshooting
Measurement System Troubleshooting
"Checking the A10 Phase
"Removing and
"Checking the 2nd LO at the A10
"Removing and
"Checking the
7-18.
"Checking the A8 Fractional-N
4-33