Navsight Solution
– Hardware Manual
NAVSIGHTHM.1.3
5.11. GPS antenna connectors
To connect external GNSS antennas, Navsight features two TNC connectors that provide IP-68 protection
even unmated. The internal GNSS receiver only supports active GPS antennas.
Any standard coax cable with a TNC male connector can be used with Navsight. However, care should be
taken to select a high quality coaxial cable with low loss in case of long cable. It is also required to use a very
similar setup on both antennas:
●
Same antenna type
●
Same cable type and length
●
Same antenna orientation
Please be advise that Navsight doesn't implement any lightning protection. The GPS antenna and cable are
very sensitive to strikes and a proper installation with lightning protection devices may be required.
Note: For best performance, the antenna(s) should be connected before the power is applied. The
Ekinox GPS estimates the noise floor of the antenna during the startup sequence.
Note 2: Navsight-E versions do not include a GNSS receiver. The TNC connectors present on the back
side are left unconnected internally.
5.11.1. Electrical specifications
Parameter
Specifications
LNA supply voltage
5 VDC
LNA supply current
< 70 mA
Note: If you use an amplified antenna splitter or special GNSS antennas such as a Trimble Zephyr 2,
please make sure that the actual gain at the Navsight side isn't above 50 dB.
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Figure 5.17: Typical TNC antenna cable
Figure 5.18: GPS antenna connector
