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 is 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, with METRAHIT⏐X-
TRA⏐OUTDOOR only
8 ISO: no function here
9 Transformation factor (current clip factor),
with METRAHIT⏐B
ASE and METRAHIT⏐TECH only
10 IR: infrared interface display, with METRAHIT⏐X-TRA⏐OUTDOOR only
11 Scale for analog display
12 Pointer for analog display (bar graph – pointer)
depending upon setting in SET menu for the A.diSP parameter
Triangle appears: indicates overranging
13 Diode measurement selected
14 Selected type of current
15 TRMS measurement
16 Pt100(0): selected platinum resistance thermometer with
automatic recognition of Pt100/Pt1000,
with METRAHIT⏐X-
TRA⏐OUTDOOR only
17 Type K: temperature measurement with type K (NiCr-Ni) thermocouple
18 sec (seconds): unit of time
19 ΔREL: relative measurement with reference to offset
20 Unit of measure
21 ZERO: zero balancing active
22 Warning regarding dangerous voltage: U > 55 V AC or U > 70 V DC
23 Continuity test with acoustic signal is active
24 h (hours): unit of time
1 2910
12
14
15
15
16
20 17
22
23
765
1921
8
3
12
18
24
4
Battery full
Battery OK
Battery weak
Battery (almost) dead, U < 1.8 V
METRAHIT⏐X-TRA⏐OUTDOOR:
Active data transmission ↓ to / ↑ from multimeter
IR interface in stand-by mode
(ready to receive starting commands)
Battery level indicator
Interface indicator