Brandywine Portable Timing Unit - Troubleshooting Common PTU Issues; Power and Satellite Acquisition Problems; Time Synchronization and Battery Issues; Fault Indicators and Alarm Checks

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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!abl e!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)!