GX-3R Pro Operator’s Manual Chapter 2: Description • 20
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 Pro 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 a plug that connects to
the GX-3R’s power jack on the other end.
Multi-Unit 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 Pro’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 Pro to a utility belt.
Figure 4: Calibration Cup
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