Function Keys; Function Keys/Function Switch Matrix - HP 971A User Manual

Function Keys

Power
Automatic power off/power save after 30 minutes. Alarm sounds 30 seconds before power off.
Power off if input < 80 V or < 400 mA. Power save if input > 80 V or > 400 mA, last measurement
displayed, power consumption is reduced. Press any key or change any function to cancel. Defeat
by holding the
Relative/Percent
Press
Makes the last displayed
measurement the reference
Calculates the percentage change
from the reference
Cancels the Relative/% function
Perform a zero adjust on the 400
pressing this key. Cycle power to erase the stored zero adjustment.
key for 2 seconds while applying power.
Action
Each measured value relative to the
range and displayed value is less than 99 by shorting the test leads and
Main Display
reference value (difference)
Each measured value as a percent
change of the reference value
Measured value
Operation
Secondary
Display
Range
Range
Range
1-9