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8163A/B, 8164A/B, 8166A/B User's Guide
Hosting a Reference Powermeter
A reference powermeter is used to calibrate for losses in the optical test
setup. The Keysight 81576xA Variable Optical Attenuator modules' user
interface includes features that allow quick and easy calibration if the
reference powermeter is hosted by the same mainframe as the Attenuator
module.
•
If the Attenuator module is not hosted by the same mainframe, the
calibration can be done manually by entering the offset value and
reference power level.
•
If the Attenuator module and the reference powermeter are not hosted
by the same mainframe, but the mainframes are connected via a GP-IB
bus to a PC or host computer, GP-IB commands can be used to
perform the calibration steps. The procedures used are outlined in our
Application Note 5988-3159EN : "Variable Optical Attenuator in BER
Test Applications".
The Attenuator Details Display
To display the full user interface for the Attenuator module, as shown in
Figure 134
on page -218, use the Cursor key to highlight the Attenuator
slot, then press the [Details] softkey:
Setting Attenuation and/or Power Levels
8
217
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