120 20131-301
GeminiG3 - User Manual
8
2.
Using the installation bracket as a template, mark the four locations for drilling (see Figure 1).
Again, ensure that drilling at the selected points is safe and will not cause damage.
3.
Indent the drilling positions with a center punch.
4.
Drill holes sized for the self-tapping screws or for the nuts, bolts and lock washers used.
Caution: Slightly reduce the size of the drilled holes when using self-tapping screws in thin metal.
5.
Install the bracket without distorting (see Figure 2).
Figure 2 - Bracket installation
5.
Securely mount GeminiG3 unit
to the installed bracket using the four supplied metal shoulder
screws as shown in Figure 2 above. Push the screws through the rubber grommet and fasten se-
curely to the unit. Do not over tighten.
Figure 3 – Rubber grommet and shoulder screw details
6.
Drill any additional holes as required for routing all cables and fit holes with suitable grommets
or bushings whenever required.
2.4 Electrical installation
2.4.1 Electrical requirements
GeminiG3 radiomodem is designed to operate from a 13.8Vdc nominal car battery (negative ground) and
requires currents up to 12.0A. It will tolerate a supply voltage range of 10.9 volts to 16.3 volts.
In vehicles with a 24 VDC electrical system (mostly in trucks), it is essential to provide a suitably rated
24/12 VDC converter to isolate the unit from the battery and protect it against excessive voltage.
Warnings:
Always disconnect GeminiG3 radiomodem’s DC power lead before connecting a second
battery, using power from another vehicle or power boosting (e.g. when “jump starting” the
vehicle).