Agilent Technologies 8719ET Service Manual page 51

8719ET/20ET/22ET
8719ES/20ES/22ES
RF Network Analyzers
In Case of Difficulty
Inspect all connections. DO NOT disconnect the cables from the analyzer test
NOTE
ports. This will invalidate the calibration that you have done earlier.
• Repeat "Verification Device Measurements," on page
connections for each verification device measurement.
• If the analyzer still fails the test, check the measurement calibration as follows:
1. Press
Preset
2. Recall the calibration by pressing
INTERNAL MEMORY
3. Use the front panel knob to highlight the calibration you want to recall and press
RECALL STATE
4. Connect the short to cable 1.
5. Press
Meas
CONTINUOUS
6. Press
SCALE/REF
ES Models (Check PORT 2)
7. Check that the trace response is 0.00 ± 0.05 dB.
8. Disconnect the short and connect it cable 2.
9. Press
Meas
10.Check that the trace response is 0.00 ± 0.05 dB.
11.If any of the trace responses are out of the specified limits, repeat
Calibration," on page 2-22
12.Refer to Chapter 4, "Start Troubleshooting Here"
information.
Service Guide
PRESET: FACTORY
RETURN
.
Refl: FWD S11 (A/R)
.
SCALE/DIV
Refl: REV S22(B/R)
and "Verification Device Measurements," on page
System Verification and Performance Tests
2-25. Be sure to make good
.
Preset
SELECT DISK
Save/Recall
.
TRIGGER MENU
Sweep Setup
.
.05 x1
.
for more troubleshooting
System Verification
"Measurement
2-25.
2- 29