Performance Test Procedures
Performance Tests
Keysight 81630B/4B/6B Power Sensor Modules and Keysight 81635A Dual Power Sensor Module, Edition 4
49
Return Loss Test
1
Make sure that all connectors are clean.
2
Set up the equipment as shown in
3
Press
[Preset]
on the mainframe.
Figure 7 Return Loss Measurement Setup
4
Zero the Return Loss Module and the Power Sensor Module
5
Enable the internal laser source of the Return Loss Module and allow 20
minutes for it nto stabilize.
6
At the Power Meter:
a
Set the averaging time
[AvTime]
to 1s
To ensure traceability, use the 81610CC Reference Cable for calibration
measurements. Do
not
use the 81610CC Reference Cable for
measurements on a Device Under Test. Instead, use a measurement
patchcord.
N O T E
It is important to maintain the quality of the straight connector end
of the 81610CC Reference Cable.
Never
add another connector to
the straight end of the 81610CC Reference Cable, since a physical
connection is made. When the straight end of the 81610CC
Reference Cable is connected to the 81634B Power Sensor module,
no physical connection is made so there should be no degradation
of connector quality.
C A U T I O N
