GV304N User Manual
TRACGV304NUM001
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3.5.
Switch ON the Backup Battery
To use the GV304N backup battery, the switch must be at the ON position. Switch on the case and
ON/OFF position are shown below.
Figure 7.
Switch and ON/OFF position
Note:
1. The switch must be on the “OFF” position when shipped on an aircraft.
2. When the switch is on the “OFF” position, the battery cannot be charged or discharged.
3.6.
Installing the External GPS Antenna (Optional)
There is a SMA GPS antenna connector on GV304N. The GV304N will automatically detect and
use an external antenna when connected.
Figure 8.
GPS Antenna of GV304N
3.6.1.
GPS
Antenna
Specification
Table 6.
GPS Antenna Specification
GPS antenna:
Frequency: 1575.42MHz
Bandwidth:
>5MHz
Beam width:
>120 deg
Supply voltage:
2.7V-3.3V
Polarization:
RHCP
Gain: Passive:
0dBi
min
Active: 15dB
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