MANUAL P/N 900000118 REV D
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6
Troubleshooting Guide
6.1
Unit does not power up.
Ensure that the unit is plugged in and the switch is in the upwards (ON) position.
Check to make sure that the green power light is illuminated. Please note that the
display will only show the current time while the DISPLAY button is depressed.
6.2
PTU does not acquire satellites
Ensure that an antenna is fully connected and that the antenna has a clear view of
the sky. In order to acquire satellites, the PTU must have an unobstructed view of
the sky with at least 270º of clear sky horizontally, and no large obstructions more
than 30º above the horizon.
If using the built-in antenna, ensure that the short coaxial link cable between J1 and
J2 is installed.
6.3
Time Valid does not illuminate, but the PTU is tracking satellites
Check that the PTU has finished its warmup cycle. During power-up, the PTU needs
at least five satellites to establish a GPS lock, and only 1 satellite to be visible at all
times after that first lock. If the PTU is not in its warmup cycle, check the GPS status
page to see how many satellites it’s tracking. Using the PTU in mobile mode
requires that at least five satellites be visible at all times.
6.4
Battery does not hold charge
Charge the PTU for 5 hours from the AC power connector, and then run it from the
battery, if the unit cannot last more than 1 hour, contact Brandywine to request a
replacement battery.
6.5
Red Fault light is on
Check that the GPS antenna is able to see satellites and is not obstructed. If the PTU
is able to see satellites, check the alarm list from your web browser. (See 5.3.1 for
how to access the list of alarms and for a list of alarms)
