User's Guide Part 2

User Guide: PTP 600 Series Installing PTP-SYNC
phn-0896_009v003
Feb 2010
UNDER DEVELOPMENT
5-41
Power-up, testing and fault finding
The correct operation is as follows
• Ensure that all cables are connected to the correct interfaces of the PTP-SYNC
unit and the GPS receiver module. Failure to do so may result in damage to the
equipment.
• Connect mains power to the PIDU unit.
• Within 90 seconds the ’STATUS’ LED should blink once every second to show
that satellite lock has been achieved.
• If the system does not operate correctly, refer to the fault finding guide below.
Fault Finding Guide
LEDs do not illuminate
Ensure that there is a cable connection between the PIDU ‘ODU’ interface and the
‘PIDU IN’ interface of the PTP-SYNC unit.
A 1PPS synchronisation pulse does not appear to be detected by the PTP-
SYNC unit (no satellite lock)
Failure of the ‘STATUS’ LED to illuminate or blink.
Depending on configuration:
1) System using a GPS receiver module - Ensure that there is a cable connection
between the PTP-SYNC ‘GPS/SYNC IN’ interface and the LPU, also that there is a
cable connection between the LPU and the GPS receiver module. Check that the
GPS receiver module has an uninterrupted view of the sky.
2) System using an alternative 1PPS timing source - Ensure that there is a cable
connection between the PTP-SYNC ‘GPS/SYNC IN’ or ‘1PPS IN’ interface and the
1PPS timing source.