Spectra EC22S, User Manual

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Spectracom Corporation EPSILON CLOCK MODEL EC22S
EPSILON CLOCK User’s Manual 7-3
7.4.2 What Can Be Done
7.4.2.1 Clock Module Exchange Procedure
When a diagnostic shows a Clock module failure, it is possible, in the field, to
exchange a failed Clock module for a new one:
•
With the web interface ("Time & Reference Setup" menu, Distribution
Parameters), force the distribution source to Left or Right, whichever module is
OK.
•
Go to the assistant menu on the front panel LCD/touchpad ("Extraction" item
on the top menu). Confirmation is given on which side Clock module can be
extracted.
•
Pressing "Enter" on "Halt" field stops software activity on the Clock to be
extracted (all LEDs goes orange). The operator is asked to switch off AC power
(only on the extraction side). Switch off AC power.
•
Unfasten the 4 screws of the Clock module front panel and pull on the handle
to extract the module. At the halfway mark of module extraction, disconnect the
earth connection by pulling off the "faston" tab located behind the Clock module
front panel.
•
When inserting new module, just plug it into the slot, connect the earth tab,
fasten the 4 screws, and switch on. At the end of the start up period (monitor
status of module on web page), reprogram the selection mode of the
distributed source to "Automatic".
7.4.2.2 Other failures
No other maintenance can be performed in the field. Other repairs require the unit to
be shipped back to Spectracom.