User`s guide

1-18 Chapter1
System Verification and Performance Tests
System Verification
In Case of Difficulty for Port 1 to Port 3
1. Inspect all connections.
CAUTION Do not disconnect the cables from the reference test ports. Doing so will
invalidate the calibration you performed earlier.
2. Press Preset, Save/Recall, SELECT DISK, INTERNAL MEMORY, RETURN.
Using the front panel knob, highlight the title of the full 2-port
calibration performed earlier, then press RECALL STATE.
3. Repeat procedure “Port 1 to Port 3 Device Verification” on page 1-14.
4. If the analyzer still fails the test, check the measurement calibration
as follows:
a. Press Preset.
b. Recall the calibration by pressing Save/Recall, SELECT DISK,
INTERNAL MEMORY, RETURN
.
c. Use the front panel knob to highlight the calibration you want to
recall and press RECALL STATE.
d. Connect the short to reference test port 1.
e. Press Meas, Refl: FWD S11 (A/R), Menu, TRIGGER MENU,
CONTINUOUS.
f. Press Scale Ref, SCALE/DIV, .05, x1.
g. Check that the trace response is 0.00 ±0.05 dB.
h. Disconnect the short and connect it to reference test port 3.
i. Press Meas, Refl: REV S22(B/R).
j. Check that the trace response is 0.00 ±0.05 dB.
k. If any of the trace responses are out of the specified limits, repeat
the “Port 1 to Port 3 Measurement Calibration” on page 1-12 and
the “Port 1 to Port 3 Device Verification” on page 1-14.