Keysight Technologies 8163A User Manual page 109

3 Power Measurement
108
Figure 60
If you see the screen shown in
NOTE
operation has failed because the Power Meter received light. The most
common reason for zeroing to fail is if:
• a source is connected to the Power Meter's input connector,
• the fiber connected to the Power Meter's input connector is collecting
light, or
• the Power Meter receives ambient light because the input connector is
uncovered.
Press Enter and start again at step 1.
4 When the zeroing operation finishes, press the [Close] softkey to close
the menu.
Zeroing Sreen
Figure 61
on page -109, the zeroing
8163A/B, 8164A/B, 8166A/B User's Guide