User Manual

12 GMC-I Messtechnik GmbH
5Buzzer
The following steps are acknowledged ba an acoustic signal:
• Activation or deactivation of the following functions:
AUTO/MAN, REL or HOLD, Hz / %, Backlight.
• When AC voltage > 750 V is applied, DC voltage > 1000 V,
AC/DC mA > 400.0 mA, AC/DC A > 10 A, the buzzer
sounds as an overload warning.
• Approximately 1 minute before the multimeter is switched
Auto Power OFF, the buzzer issues constantly 5 acoustic
signals as a sign of warning. Before the multimeter
switches off, the buzzer generates one long acoustic signal
to warn the user.
6 Measurement Value Storage „HOLD“
By pressing the HOLD key, the currently displayed measured
value can be „held“, and „HOLD“ is displayed at the same time
on the LCD.
The HOLD display is switched off if:
• the HOLD key is reactivated,
• the function selector switch is operated,
• the yellow multifunction key is activated for a change of
function, e.g. AC
→ DC,
• the REL key is activated,
• the AUTO/MAN key is activated.
7 REL – Relative Value Measurement
The REL key serves to measure relative values and acts in acti-
vation. All functions can be used for relative value measure-
ment except Hz / duty.