Keysight Technologies N5224/5A Service Manual page 47

Tests and Adjustments
Preliminary Checks
Figure 3-6 Typical Cable Insertion Loss Response
If the Cable Insertion Loss Check Fails
1. Clean the cable and devices and torque to specification. Repeat the check.
2. If the check still fails, the cable should be repaired or replaced.
Cable Magnitude and Phase Stability Check
1. With the test port cable still connected to Port 1, connect a short to the
other end of the cable.
2. Press UTILITY
3. Press TRACE/CHANNEL
dialog box, click the S11 box, and then click OK.
4. Press RESPONSE
5. Press RESPONSE
the
The Averaging Factor box will appear directly above the display. In the
Averaging Factor box, type 50 or click the arrows to select 50, and then
press ENTRY
Keysight N5224A/25A Service Guide
.
Preset
Traces
Format
. Verify that
Avg
Average on/OFF softkey to toggle it ON.
Enter .
, then
New Trace...
, then Phase , then ENTRY
Average ON/off
. In the New Trace
Enter .
is ON. If not, press
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