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TEK-TCG 01-G-Manual-v6-052021
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© 2021 by Tekron International Limited. All Rights Reserved. All trademarks are the property of their respective holders. The
information in this document is provided for informational use only and is subject to change. For further information or support,
go to www.tekron.com.
4.
BACK PANEL – INPUTS AND OUTPUTS
ANT: Antenna Connector (SMA Connector)
The “ANT” port is the GNSS antenna input port. The antenna port provides an
interface for an external active antenna via low-loss coaxial cable.
A 50 Ω impedance cable should be used with the port.
5 V DC at 50 mA max is supplied to power an active antenna.
If the Fiber Slave option is ordered, the antenna is replaced by a fiber input port.
Care should be taken to ensure that the connector is not cross-threaded when
attaching the antenna lead-in cable. The connector should be tightened firmly by
hand only. Do NOT over-tighten! Ensure the antenna SMA male connector center pin
is straight before plugging in.
Antenna Cable Considerations:
The Tekron antenna port expects a signal with at least 15 dB of gain, and no more than 35 dB of
gain, with 20-35 dB being the optimal gain range.
The Tekron supplied antenna delivers 40 dB of gain into the antenna cable, hence the loss of the
antenna cable in the installation should fall within the ranges specified below.
Note
: The above figures are based on an average GNSS signal strength of -130dBm at sea level,
and they assume that the Tekron supplied antenna is used (the Tekron supplied antenna is
recommended).
CNT-240
32.8 dB/100 m (10dB/100ft). Plus 1
dB/connector
Approximate optimum length range: 15 to 60
meters
Approximate maximum length range: 15 to 76
meters
CNT-400
16.73 dB/100 m. Plus 1 dB/connector