Specifications

X723-300151 6-27 Issue 2
PSU B Fail
This indicates that power supply unit 'B' has failed, when 'fitted' in the
'mOde-Install' menu.
PSU tolerance
This fault indicates that one of the internal power supply rails is outside
the specified tolerance of ± 4%.
Slip
This fault is associated with a channel card and is present when a data
circuit slip has occurred on the card. It is usually caused by incorrect
clocking.
Local loop
This fault indicates that a local PCM loop has been set on the line.
Incoming loop
This fault indicates that an incoming PCM loop has been set on the line.
Bypass
This fault occurs when the relevant Dual LIU is in PCM bypass.
Clock Bypass
This fault occurs when the relevant Dual LIU is in Clock bypass.
External status 4
This indicates the presence of an alarm condition on external status line 4.
Level 13 Faults
There are no faults at this level.
Level 14 Faults
Sync priority 2
This fault indicates that the second synchronisation source has failed.