GW Instek GDM-397 - Functional Buttons

GDM-397/GDM-461 User Manual
11
Functional Buttons
The table below describes what operations are performed for each of the buttons.
Button
Operation Performed
LIGHT (GDM-397)
Press and hold for 2 seconds to turn the display backlight on or off.
Hold
Press to enter or exit data hold mode.
BLUE Button
Press to select the alternate function.
Yellow (GDM-461)
Hz% (GDM-397)
Press the Hz% button (GDM-397) or the Yellow button(GDM-461) for
frequency and duty cycle measurement.
RANGE
 Press RANGE to enter the manual ranging mode; the Meter beeps.
 Press RANGE to step through the ranges available for the selected
function; the Meter beeps.
 Press and hold RANGE for 2 seconds to return to auto range
mode; the Meter beeps
MAX/MIN(GDM-397)
Press to select the maximum and minimum value.
REL
 Press to enter REL mode.
 Press again to exit REL mode
 For Model GDM-397: Press and hold for over 2 seconds to enter or
exit RS232C or USB mode (optional).
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.