Additional Functions; Select Function; Rel Function; Hold Function - VOLTCRAFT VC281 TRMS Mode D'emploi

10. Additional functions

You can use the two function keys (C and I) to enable a range of additional functions. The multimeter beeps each
time you press a button.
a) SELECT function
Some measurement modes have additional sub-modes. The sub-functions are in the rotation area marked grey. To
switch to a sub-mode, press the "SELECT" (I) button briefly (<2 s). Press the "SELECT" button again to switch to the
next sub-mode.
b) REL function
The REL function allows you to take a reference measurement to avoid possible line losses (e.g. during resistance
measurements). For this purpose, the current indicated value is set to zero. A new reference value is set.
To enable this function, press and hold the "REL" button (C) for approx. 1 s. The display shows "Δ" and the measure-
ment indicator is set to zero. The automatic measurement range selection thereby disabled.
To disable this function, change the measurement mode or press and hold the "REL" button for approx. 1 s.
The REL function is not enabled in the following measurement modes: Frequency, diode test and
continuity test.
The "REL" button only works when a measurement is displayed. It cannot be used when "OL" is
displayed.
c) HOLD function
This function freezes the current reading on the display so that you can record it for future reference.
If you test live wires, ensure that this function is disabled before the measurement starts. Other-
wise, a false measuring result is simulated!
Press the "HOLD" (C) button to enable this function. The multimeter will beep and "H" will be displayed.
To disable the hold feature, press the "HOLD" button or change the measurement mode.
d) Auto shut-off function
The DMM switches off automatically after 15 minutes if no buttons are pressed. This function saves battery power and
extends the service life. The
The DMM will beep several times approximately 1 minute before it turns off. If the the REL/HOLD or SELECT button
is pressed during this time to cancel shut-off, the next shut-off signal is sounded after a further 15 minutes. You will
hear a long beep when the multimeter switches off.
To switch the DMM back on, move the rotary control to the "OFF" position or press the "REL/HOLD" or "SELECT"
button.
The automatic shut-off feature can be disabled manually.
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symbol will be displayed when the automatic shut-off feature is enabled.