GW Instek GDM-398 - Manual (Page 15)

GDM-360/397/398/461 User Manual
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*Note: For the GDM-398, holding the REL key 2 seconds will
also display the DATA OUTPUT symbol, however the GDM-398
has no data output capability and thus this symbol can be ignored.
PEAK (GDM-461)  Press to step the display through Pmax and Pmin readings.
 Press and hold for 2 seconds to exit Peak mode.
 “CAL” means the meter has entered self-calibration mode.
Display Symbols
No Symbol Meaning
1 Data hold is active.
2 Sleep Mode indicator.
3 Indicates negative reading.
4 AC Indicator for AC measurement.
5 DC Indicator for DC measurement.
6 The Meter is in the auto range mode in which the Meter
automatically selects the range with the best resolution.
7 MANU Indicator for manual ranging mode.
8 OL The input value is too large for the selected range.
9 hFE Transistor testing indicator.
10 Diode Test.