GDM-397/GDM-461 User Manual
3
OVERVIEW
This User Manual covers information on safety and cautions. Please read the
relevant information carefully and observe all the Warnings and Notes.
Warning
To avoid electric shock or personal injury, read the “Safety Information” and
“Rules for Safe Operation” carefully before using the Meter.
Digital Multimeter Model GDM-397 and GDM-461 (True RMS) (hereafter referred
to as “the Meter”) are auto ranging multimeters.
The Meter can measure AC/DC Voltage and Current, Resistance, Diode,
Continuity Buzzer, Capacitance, Frequency and Temperature (˚C or ˚F). In addition
to the conventional measuring functions, there is an RS232C or USB serial port
(optional), data hold, relative mode, peak measurement (GDM-461), low battery
display, display backlight (GDM-397) and sleep mode. Except where noted, the
descriptions and instructions in this User Manual apply to both GDM-397 and
GDM-461.
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