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Smooth
mode (Insulation Resistance function only)
Smooth
mode displays the running average of the last eight measured readings
having changes within 300 counts in sequence. On the contrary, it displays
directly ,without smoothing, the measured reading that is beyond 300 counts in changes
comparing to its former one. Press the
button momentarily to enable with LCD
annuciator “
” turned on. Press momentarily again to disable.
Backlighted display
For Model 878, press the
button momentarily to toggle the LCD backlight. For
Models 877 & 876, press
SELECT button for a second or more to toggle the LCD
backlight. The backlight will also be turned off automatically after approximate 37
seconds to extend battery life.
Auto- or Manual-ranging (Volts, mA & Ω functions only)
Press the
RANGE button momentarily to select manual-ranging, and the meter will
remain in the range it was in, the LCD
turns off. Press the button momentarily
again to select an adjacent range. Press and hold the button for 1 second or more to
resume auto-ranging.
Hold
The hold feature freezes the display for later view. Press the
HOLD button momentarily
to toggle the hold feature. This feature does not apply to Earth Continuity Test &
Insulation Resistance functions.
MAX/MIN Recording mode
Press
REC button momentarily to activate MAX/MIN recording mode. The LCD “R” &
“
MAX MIN” turn on. The meter beeps when a new MAX (maximum) or MIN (minimum)
reading is updated. Press the button momentarily to read the Real-time, MAX and MIN
readings in sequence. Press the button for 1 second or more to exit MAX/MIN recording
mode. When activated, Auto-Power-Off is disabled automatically. This feature does not
apply to Earth Continuity Test & Insulation Resistance functions.
Beep-Jack™ Input Warning
The meter beeps as well as displays “
InEr” to warn the user against possible damage to
the meter due to improper connections to the “
mA” (“
mA” for Model 878) input
jack when other functions, especially voltage function, is selected.
