GNSS Compass Reference Manual
Page 24 of 85
Version 1.1
13/01/2021
7.6.2
Serial Variant
Parameter
Value
Operating Voltage
9 to 36 V
Input Protection
-40 to 60 V
Power Consumption
(Low Cost Variant)
1.2 Watts
Power Consumption
(High Accuracy Variant)
2.64 Watts
Hot Start Battery Capacity
> 24 hrs
Hot Start Battery Charge Time
30 mins
Hot Start Battery Endurance
> 10 years
Operating Temperature
-40 °C to 85 °C
Environmental Sealing
IP68
MIL-STD-810G
Shock Limit
75 g
Dimensions
672 x 190 x 73.9 mm
Weight
(Low Cost Variant)
1480 grams
Weight
(High Accuracy Variant)
1550 grams
Table 15: Serial variant hardware specifications
7.7
Electrical Isolation
The GNSS Compass's power supply circuit is galvanically isolated from the communication lines.
Additionally the plastic enclosure isolates the electronics mechanically from the vessel, addressing
the issue of vessel hull electrolysis.
7.8
NMEA 2000 Drop Cable
The NMEA 2000 cable is only compatible with GNSS Compass part numbers GC-SER-LC and
GC-SER-HA. It has part number GC-NMEA2000-CABLE-6M.
The NMEA 2000 cable is used to connect serial variant GNSS Compasses to an NMEA 2000
network. Connection to the GNSS Compass is made through a Holin C-Size 18 pin connector. The
Holin part number is CCN-L218SM. The connector has a bayonet lock and provides a reliable and
rugged connection to the GNSS Compass under demanding conditions. It is rated to IP68 in the
mated condition. The opposite end of the cable is a 5 pin male Micro-C connector as per the NMEA
2000 standard. The cable is 6 metres long, dual shielded and UV stable.
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