How To Choose The Range Mode - Keysight N774-C Series User Manual

How to Choose the Range Mode

Keysight N774-C & 8162-C Series User's Guide
Select the channel you want to zero from the drop down list and click
on the Zero Port button. While the zero is running, the screen shows a
'busy' display.
OR
Click on the Zero First Quad button if you want to zero all channels
from first quad. Similarly, click Zero Second Quad to zero all channels
from first quad.
OR
Click on the Zero All button to zero all channels.
If you receive a zero error, the zeroing 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.
When zeroing is finished, the 'busy' display stops. You can now
proceed with your measurements.
When environmental conditions are stable, the zero setting will remain
valid over long times and the same settings will be active after rebooting
the instrument.
Zeroing will take approximately 25 seconds per channel. Please make
NOTE
sure, that the input connectors are covered. While zeroing an
attenuator's power monitor or a power meter, all attenuators in the unit
are stopped and all shutters are closed. This assures the best possible
zeroing performance.
You can choose either of two ranging modes:
• Auto - the auto-ranging mode, ensures that the result has a returned
value between 9% and 100% of full scale. The default state is for
automatic ranging to be enabled.
• Manual - the manual mode allows you to set a user-defined range.
User Interface Reference 4
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