RKI Instruments GX-2003 Manual - Manual (Page 16)

9 • Instrument Description GX-2003 Operator’s Manual
Alarm LED Arrays
Four red alarm LED (light emitting diode) arrays are visible through
frosted plastic lenses in the case. One is on the front, one on the left
side, one on the right side, and one on the top of the case. The alarm
LED arrays alert you to gas, low battery, and failure alarms.
Infrared Communications Port
An infrared (IR) communications port is located on the lower right
side of the GX-2003. The data transmitted through the port is in
standard IrDA protocol. A computer’s infrared port or an IrDA/serial
or IrDA/USB cable connected to a computer’s serial port can be used
to download data saved by the GX-2003 to a computer using the GX-
2003 Downloading Software. See the downloading software
operator’s manual for data logging and downloading instructions.
Buzzers
Two solid-state electronic buzzers are located inside the case. Two
holes on the bottom front of the case allow the sound to exit the case.
The buzzers sound for gas alarms, malfunctions, low battery voltage,
and as an indicator during use of the GX-2003’s many display and
adjustment options.
Vibrator
A vibrating motor inside the GX-2003 case vibrates for gas alarms,
unit malfunctions, low battery voltage, and as an indicator during
normal use of the various modes of the GX-2003.
Batteries
Three AA-size alkaline batteries (standard) or an optional
rechargeable Ni-MH battery pack (3.6 VDC) power the GX-2003.
Instrument run time is dependent upon battery type. At 25°C the
alkaline batteries last up to 14 hours and the Ni-MH battery pack lasts
up to 16 hours. The battery icon in the lower right of the LCD shows
remaining battery life. If a Ni-MH battery pack is installed in the GX-
2003, an “N” appears to the right of the battery icon.
When the GX-2003 detects low battery voltage, a low battery warning
is activated. When battery voltage is too low for normal operation, the
GX-2003 sounds a dead battery alarm.
The alkaline batteries or Ni-MH pack can be replaced by removing the
battery cover on the back of the case. Turn the battery cover release
knob counterclockwise to release the cover.
The Ni-MH battery pack can be recharged by placing the GX-2003 in