Novus NR300, Руководство пользователя

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USERS MANUAL NR300
REVISION D
DATE 8/16/21
Page #: 18 of 48 www.novuspower.com
Status Banner/Notification Bar
GPS Lock Status and PPS
The status bar has a quick reference indicator for the GPS Lock and its PPS
output. If the GPS is locked, t
he “GPS” indicator will remain on solid, without
blinking.
If the GPS is powered on, but is not locked, the “GPS” indicator will
blink. If no GPS indicator is present, the GNSS receiver is inactive.
When the PPS is detected, the status bar will indicate that the PPS is currently
being provided to the Rubidium for discipline by showing a flashing arrow that
feeds the Rubidium Discipline State indicator.
If the flashing arrow is not present, no PPS is yet available to discipline the
Rubidium. Consider moving the unit to get a better view of the sky.
After the holdover period, and when the GNSS has been powered on again and
GNSS lock has been achieved and the PPS is used to verify the Rubidium
frequency (without discipline enabled), the GPS indicator will show a stopwatch
icon to indicate that the PPS is timing the Rb.
In this mode, the PPS is compared to the Rubidium frequency and therefore is
not provided to the Rubidium for discipline. The user can navigate to the
FREQUENCY menu and verify the current frequency of the Rubidium source. If
the actual drift exceeds the requirement, the ALARM screen may indicate
excessive temperature and or excessive shock and vibration.