Chapter 2 SPAN Installation
OEM7 SPAN Installation and Operation User Manual v14
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1. Mount the GNSS antenna.
See
on the next page for details.
2. Mount the IMU.
See
on page 34 for details.
3. Install the OEM7 receiver card.
See the
OEM7 Installation and Operation User Manual
for information about installing an OEM7 receiver.
4. Connect the GNSS antenna to the OEM7 receiver card.
See the
OEM7 Installation and Operation User Manual
for information about installing an OEM7 receiver.
5. Connect the IMU to the OEM7 receiver.
See
Connect the IMU to the OEM7 Receiver Card
on page 36 for details.
6. Connect the I/O strobe signals (optional).
See the
OEM7 Installation and Operation User Manual
for information about installing an OEM7 receiver.
7. Connect power to the IMU and receiver.
See
on page 53 for details.
8. Connect a data communication device, such as a computer, to the receiver. A data communication device is
used to configure and monitor the receiver.
See the
OEM7 Installation and Operation User Manual
for information about installing an OEM7 receiver.
2.1.1 Selecting a GNSS Antenna
NovAtel offers a variety of GNSS antennas, including single, dual and triple-frequency, triple-band and wide-
band reference antennas (refer to our web site:
for details of available antennas). All
antennas include band pass filtering and an LNA. The GNSS antenna chosen depends on the particular applic-
ation. Each model offers exceptional phase center stability and a significant measure of immunity against mul-
tipath interference. Each antenna has an environmentally sealed radome and all meet the European Union’s
Restriction of Hazardous Substances (RoHS) and Waste Electrical and Electronic Equipment (WEEE).
If a non-NovAtel GNSS antenna is chosen, a typical antenna LNA gain between 26 dB to 30 dB is recommended
in a rover station application.
A dual frequency capable GNSS antenna is required to use SPAN, RTK, ALIGN or dual frequency
GLIDE.
An L-Band capable antenna is required to receive TerraStar corrections.
For more information about antenna selection, see
Importance of Antenna Selection
2.1.2 Choosing a Coaxial Cable
An appropriate coaxial cable matches the impedances of the antenna and receiver (50 ohms) and has a line loss
not exceeding 10.0 dB. If the limit is exceeded, excessive signal degradation may occur and the receiver may
not meet performance specifications. NovAtel offers several coaxial cables to meet GNSS antenna inter-
connection requirements, including:
l
5 m, 15 m and 30 m antenna cable with TNC connectors on both ends (NovAtel part numbers GPS-C006,
GPS-C016 and GPS-C032)