Function Keys; Function Keys/Function Switch Matrix - HP 972a User Manual

Function Keys

Power
Automatic power off 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 when using the 400 Ω range or 40 mV range and displayed value is less than 99 by
shorting the test leads and pressing this key. Perform a zero adjust on the 10 nF Capacitance range with the
leads open. Cycle power to erase the stored zero adjustment.
key for 2 seconds while applying power.
Action
Each measured value relative to
Each measured value as a percent
Main Display
the reference value (difference)
change of the reference value
Measured Value
Operation
Secondary Display
Reference value
Reference value
Range
1 - 9