Technical data

Features and Functions 2
U1241A/U1242A User’s and Service Guide 19
Refresh Hold
Users are required to activate the Refresh Hold in the setup mode.
1 Press to enter Refresh Hold mode. The present value will
be held, and the annunciator is displayed.
2 The meter is ready to hold new measuring value once the variation of
measuring value exceeds the setting of variation count, and the
annunciator is flashed.
3 The hold value will be updated until the measuring value is stable. The
annunciator will stop flashing and stays lit, an audible tone will
sound to remind user.
4 Press again to disable this function.
NULL (Relative)
The NULL function subtracts a stored value from the present measure-
ment and displays the difference between the two values.
1 Press to store the displayed reading as the reference value to be
subtracted from subsequent measurements and to set the display to
zero. The NULL annunciator is displayed.
2 Press to view the stored reference value. The NULL annunciator
will flash for three seconds before the display returns to zero. To exit
this mode, press while NULL is flashing on the display.
NOTE
• For voltage, current and capacitance measurements, the holding value will not be
updated if the reading is below 50 counts.
• For resistance and diode measurements, the holding value will not be updated if the
reading is in “OL” (open state).
• The holding value may not be updated if the reading does not reach stable state for all
measurements.