User Manual

GMC-I Messtechnik GmbH 11
Operating Overview – Connections, Keys, Rotary Switch, Symbols
Symbols Used in the Digital Display 1 Battery level indicator
2 ON: continuous operation (automatic shutdown deactivated)
3 DATA: display memory, “freeze measured value”
4 STORE: memory mode active
5 TRIG: synchronized storage
6 FILTER: low-pass filter active
7 EVENTS: events measurement
8 IR: infrared interface indicator
9 Auxiliary display: digital display with decimal point and polarity display
10 Transformation ratio (factor for current clamp sensorc and transformers)
11 dB: alternating voltage level measurement
12 Selected type of current
13 TRMS measurement
14 Unit of measure
15 Warning regarding dangerous voltage: U > 30 V AC or U > 35 V DC
16 Main display: digital display with decimal point and polarity display
17 Continuity test with acoustic signal active
18 Pt100/Pt1000: selected platinum resistance sensor with automatic
selection of Pt100 / Pt1000
19 TC: temperature measurement with type K thermocouple (NiCr-Ni)
20 h (hours): unit of time
21 MAN: manual measuring range selection active
22 ZERO: zero balancing active
23 ΔREL: relative measurement with reference to offset
24 min: minimum value storage
25 Diode measurement selected
26 max: maximum value storage
27 Stopwatch active or time since beginning of measurement
28 ON: together with the symbol in item 27: elapsed time since activation of the
respective function
29 sec (seconds): unit of time
Battery full
Battery OK
Battery weak
Battery (almost) dead, U < 1.8 V
Data transmission ↓ to / ↑ from multimeter, active
IR interface active (ready to receive starting
commands)
Battery Level Indicator
Interface Indicator
1 28
9
14
15
17
54 6
9
3
11
13
10
19
24 272120
18
16
25
12
7
22 23 26 2829