Operation Manual

GMC-I Messtechnik GmbH 13
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 MAN: manual measuring range selection active
4 Digital display with decimal point and polarity display
5 max/min: Min/Max value storage
6 DATA: display memory, “freeze measured value”
7 STORE: memory mode active
8 ISO: insulation resistance measurement (if blinking active) /
selected test voltage 10 V or 100 V
9 1: x current clip factor (transformation ratio)
10 IR: infrared interface display
11 Scale for analog display
12 Pointer for analog display (bar graph – pointer)
depending upon setting in SETUP menu for the A.d iSP parameter
triangle appears: indicates overranging
13 R
SL
: loop impedance measurement selected
14 Diode measurement selected
15 Selected type of current
16 TRMS measurement
17 Pt100(0): selected platinum resistance thermometer with
automatic recognition of Pt100/Pt1000
18 No function
19 sec (seconds): unit of time
20 ΔREL: relative measurement with reference to offset
21 Unit of measure
22 ZERO: zero balancing active
23 Warning regarding dangerous voltage: U > 15 V AC or U > 25 V DC
24 Continuity test with acoustic signal active
25 h (hours): unit of time
1 2910
12
15
15
16
17
21 18
23
24
765
2022
8
3
12
19
25
4
Battery full
Battery OK
Battery weak
Battery (almost) dead, U < 1.8 V
Data transmission ↓ to / ↑ from the multimeter is active
IR interface in standby mode
(ready to receive starting commands)
Battery level indicator
Interface indicator
14