Pentax G3100-R1 Instruction Manual page 8

Figure 2: G3100, Rear View
The rear view of the G3100 shows the door to access the SD card and SIM card. GNSS raw data
can be saved to the SD Card, and the SIM card allows cellular service with the internal GSM
modem.
The ports and the product label can be seen on the underside of the G3100. There are 3 ports:
two serial ports and one external power input port. Also located on the base of the G3100 is a
TNC connector for a UHF antenna, which is utilized by the internal radio. ALWAYS connect a
UHF antenna before powering ON the G3100. The threaded connector in the middle is a
standard 5/8" connector for mounting onto survey poles or accessories.
Figure 3: G3100, Bottom View
SIM & SD Card Compartment
UHF Radio Antenna
Release Button for Battery
Compartment
Data (8-pin LEMO)
Power (4-pin LEMO)
Control (5-pin LEMO)
Model & Serial #
CE / Bluetooth® Label
5/8" Thread Nut
Battery A Compartment
Battery B Compartment
TNC Connector for UHF Radio
Antenna
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