EKINOX 2 Surface Series
– Hardware Manual
EKINOX2HM.1.1
4.5. GPS antenna connectors
To connect external GPS antennas, the Ekinox N and D versions feature 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 the Ekinox. However, care should be
taken to select a high quality coaxial cable with low loss in case of long cable.
Please be advise that the Ekinox 2 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.
Warning: With the Ekinox2-D, for correct dual antenna operations, please use the exact same TNC
cables and antennas for the primary and secondary GPS.
4.5.1. Electrical specifications
Parameter
Specifications
Remarks
LNA supply voltage
5 VDC
±5%
LNA supply current
< 70 mA
RF input level signal
L1: -122 to -87 dBm
L2: -126 to -93 dBm
RF input level noise
L1: -161 to -141 dBm/Hz
L2: -161 to -141 dBm/Hz
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 Ekinox side isn't above 50 dB.
4.5.2. GPS antenna advice
The Ekinox N and D embed a high performance GNSS receiver that supports GPS L1/L2, GLONASS L1/L2,
BEIDOU B1/B2 and GALILEO E1/E5b signals.
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Figure 4.9: Typical TNC antenna cable
Figure 4.10: GPS antenna connector