4.4. HOW TO OUTPUT A PPS SIGNAL
4.4 How to output a PPS signal
The AsteRx-U MARINE Fg can output a PPS (Pulse-per-Second) signal that can be used for
example, to synchronise a secondary device to UTC time.
Step 1: Connect the PPS cable
Connect the PPS_OUT cable to the rear-panel connector labelled ‘PPS GPO’ and indicated in
Figure 4-26.
Figure 4-26:
PPS connector on rear panel
Step 2: Con
fi
gure the PPS settings
You can con
fi
gure the PPS settings on the
PPS/Timing
window on the
GNSS
menu as shown
in Figure 4-27.
Figure 4-27:
The
GNSS, PPS/Timing
window
The
Interval
is the time interval between successive timing pulses and is selectable between
10ms and 10s. The default
Polarity
of the PPS signal is a low-to-high transition which can be
alternatively con
fi
gured as high-to-low.
The
Delay
argument can be used to compensate for signal delays in the system (including
antenna, antenna cable and PPS cable). For example, if the antenna cable is replaced by
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