Spectracom SecureSync User Reference Manual page 245

Time and frequency synchronization system
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At power up, the unit automatically performs a brief LED test run during which all three LEDs are
temporarily lit. The following table provides an overview of the LED status indications:
LED Label
POWER
SYNC
FAULT
Table 4-1:
CHAPTER
4
SecureSync User Reference Guide Rev. 18
Activity/Color
Description
Off
Both AC and DC Input
Or, SecureSync's AC input switch is turned off and DC input is
not present.
On/solid green
AC and/or DC
power inputs.
Red
SecureSync is configured for two power inputs, but detects
one power input
Green, but blinking
Indicates
orange 1x per
fault.
second
Red
Time Sync
1) SecureSync has powered up and has not yet achieved syn-
chronization with its inputs.
2) SecureSync was synchronized to its selected input ref-
erences, but has since lost all available inputs (or the inputs
were declared invalid) and the Holdover period has since
expired.
Solid green
SecureSync has
and is synchronized to its reference.
Orange
SecureSync is in
chronized to its selected input references, but has since lost all
available inputs (or the inputs are not declared valid).
SecureSync's outputs will remain useable until at least the Hol-
dover period expires.
No alarm
Off
GNSS antenna problem
Blinking orange
rently active. A short or open has been detected in the GNSS
antenna cable. The light will automatically turn off when the
alarm condition clears (Refer to
Status Page" on page 449
Minor alarm
Solid orange
A
has been asserted and is currently active (Refer to
Major Alarms" on page 448
Major alarm
Red
A
ive (Refer to
troubleshooting this condition).
SecureSync front panel status indicators
4.2  Front Panel Status LEDs
Power
disconnected
are
Power
supplied
are
; SecureSync detects all
power configuration error
; or detects a
power error
condition; general power configuration
Alarm
:
valid
time and 1PPS reference inputs present
Holdover
mode. SecureSync was syn-
conditions are currently active.
alarm has been asserted and is cur-
"Troubleshooting via Web UI
for troubleshooting this condition).
condition (other than an antenna problem alarm)
for troubleshooting this condition).
condition has been asserted and is currently act-
"Minor and Major Alarms" on page 448
.
only
.
"Minor and
for
229

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