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Press the
SELECT
button for 1 second or more to toggle the LCD
backlight. The backlight will also be turned off automatically after
32 seconds to extend battery life.
Relative-Zero (∆) mode
Backlighted LCD display (Model KM 2777)
Relative-Zero allows the user to offset the meter consecutive
measurements with the main display displaying reading as the
reference value. Press the
REL
button momentarily and release to
toggle Relative-Zero mode.
Press the
RANGE
button momentarily and release to select manual-
ranging, and the meter will remain in the range it was in, the LCD
AUTO
turns off. Press the button again to step through the ranges.
Press and hold the button for 1 second or more and release to
resume auto-ranging.
Manual or Auto-ranging
Note: manual-ranging feature is not available in
Hz
and function
ranges.
Press the
RANGE
button while turning the meter on to temporarily
disable the Beeper feature. Turn the rotary switch OFF and then
back on to resume.
Set Beeper Off
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●
Non-Contact EF-Detection: An antenna is located along the top-
right end of the clamp jaw, which detects electric field surrounds
energized conductors. It is ideal for tracing live wiring connections,
locating wiring breakage and to distinguish between live or earth
connections.
●
Probe-Contact EF-Detection: For more precise indication of live
wires, such as distinguishing between live and ground connections,
use the Red (+) test probe for direct contact measurements.
The instrument equips with an optical isolated interface port at the
meter back for data communication. Optional purchase PC
interface kit BRUA-19X is required to connect the meter to the PC
computer RS232 or USB ports. Press and hold the
HOLD
button
while turning the meter on to enable meter PC-COMM output.
The hold feature freezes the display for later view. Press the
HOLD
button momentarily and release to toggle the hold feature.
PC computer interface capabilities
Hold
Press
CREST
(HOLD) button for one second or more and release
to activate CREST-MAX capture (Instantaneous Peak-Hold) mode
to capture signal peak of voltage or current in duration as short as
5ms. The LCD “
C
” & “
MAX
” turn on. Press again the button
momentarily and release can toggle the combination use of HOLD
feature. Press the button for 1 second or more and release to exit
CREST-MAX capture mode. Auto-ranging and Auto-Power-Off are
disabled automatically in this mode.
5ms CREST-MAX capture mode
