POS MV V4 User Guide
Installation
Copyright © Applanix Corporation, 2009
2-37
ANT1 and ANT2 Interfaces
Signals from the GNSS antennas are coupled to the GNSS receivers using
the ANT1 (primary GNSS) and ANT2 (secondary GNSS) ports located on the
rear panel of the PCS.
P
HYSICAL INTERFACE
The operating dc voltage for each antenna is coupled through the centre
conductor of each cable and is supplied by the PCS; GNSS signals are routed
through the same conductor to the respective receiver. If it is necessary to
replace an antenna cable and RG-303 (50 ohm) coaxial cable is not available,
RG-400 (50 ohm) may be used as an alternate. Both the GNSS antennas and
the PCS ANT1 and ANT2 ports are female TNC connectors.
I2C Interface
The analog interface hardware option delivers motion measurements (roll,
pitch and heave) for use by external equipment such as an echo-sonar.
Contact your Applanix Customer Support representative for the details; refer
to page
A-1.
Ancillary Equipment Interfaces
Auxiliary GNSS Receiver
Any of the five COM ports may be used for connecting one or two auxiliary
GNSS receivers to the PCS. The output of the auxiliary GNSS receiver must
be manually configured before it can be used by POS MV. The PCS will only
use an auxiliary GNSS receiver if its quality is better than the primary GNSS
receiver. The state of the auxiliary GNSS receiver input is displayed in the
GNSS Data window, see
Figure 48 on page 8-2.
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