Key-By-Key Operation
The MGD-2002 features high tech “membrane” switches, with a large
multi-function liquid crystal display, and a patented filter system. Each
key of the membrane switch features a raised embosed edge that is
designed to be felt when wearing protective gloves. The switches
themselves require 12 in-oz of pressure for the contacts to close, and
will make a noticable “click” that is both felt and heard, thus ensuring
the user with complete controls of the device when wearing gloves.
The following is a description of each key on the MGD:
CONTROL
(I/O) ON/OFF
LIGHT
SOUND
BUTTON DESCRIPTION
The ON/OFF button supplies power to the
instrument. Once the unit is turned on, it will
initialize, then conduct a 30 second power on
self test (POST). The instrument will turn off
automatically when left unattended for a pe-
riod of longer than 15 minutes.
The light button is simply used to turn on
and off the LCD backlight. By default the LCD
back light is turned off to conserve battery life.
With one push of this button the backlight will
illuminate and will remain on until this button
is pressed again, or the unit is turned off.
The sound button is simply used to turn on
and off the audio output of the internal speaker,
thus allowing the operator the ability to listen
for the detection of the tracer gas and not have
to watch the display. By default the audio out-
put of this device is turned off.
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