Keysight Technologies N4373D, User Manual

Page: 42 / 176

Performance Quick Check
40
Keysight
N4373D Lightwave Component Analyzer, User’s Guide
Verifying your Electrical Calibration
Passing this test ensures that the electrical calibration is within
expected performance.
1. Follow the steps in the sections “Preparation ” on page 38
and “Network analyzer settings and electrical calibration” on
page 38.
2. Connect the N5520B “1.85 mm Coaxial Adapters” (or 85056-
60006 "2.4mm Coaxial Adapter”) supplied between the two
N4697-60200 “1.85 mm Flexible Cables for Test Ports” (or
85133-60016 “2.4mm mm Flexible Cables for Test Ports”)
supplied.
3. Press the [Macro/Local utility button until you see .
4. Click to start the LCA measurement setup.
5. Select the EE Measurement tab.
6. Click .
7. Make a corrected measurement with the network analyzer.
8. Inspect the results.
• Electrical return loss S11 should be similar to S22.
• Both curves should be below -20dB over the full
measurement range, with only low frequency dependence
on applied modulation frequency.
• Transmission loss S12 should be similar to S21.
• Both curves should be 0.1dB to -0.6dB over the
full measurement range, with only low frequency
dependence on applied modulation frequency.
If the results differ from the expected values
• Visually inspect the electrical connectors on the “Electronic
Calibration Modules” and the .
If an electrical connector seems to be damaged, contact
Keysight
for repair or replacement.