16 • Chapter 2: Description GX-3R Operator’s Manual
Calibration Cup
Use the calibration cup to apply gas during a bump test, calibration, or gas test. The
calibration cup has an installation orientation to observe. “Front” and “rear” imprinting on the
bottom of the cup correspond to the front and rear of the GX-3R when the calibration cup is
installed. In addition, a “front” label on the front of the calibration cup should be visible when
viewing the LCD with the calibration cup installed.
Other Accessories
12 VDC Charger
The 12 VDC charger is a 4 foot cable with a vehicle plug on one end and plug that connects to
the GX-3R’s power jack on the other end.
Multi-Unit AC Charger
The multi-unit charger is a 4 foot wall plug style adapter that plugs into a bar. The bar has five
2-foot cables coming out one side. The end of each of the five cables has a plug that connects
to the GX-3R’s power jack. The AC adapter is rated 100 - 240 VAC input, 5.99 VDC output.
Belt Clip
A belt clip makes it easy to hook the GX-3R to a utility belt.
SDM-3R
The SDM-3R is a calibration station for the GX-3R and GX-3R Pro. The station’s buttons can
be used for operations (Standalone Mode) or a computer can be used to control the docking
station (PC Controlled Mode). See the appropriate SDM-3R manual for more information.
Figure 4: Calibration Cup
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