Status Leds - Spectracom VelaSync 1232 User Manual

2.8 Advanced Timing Connections
2.8.2

Status LEDs

VelaSync High-Speed Enterprise Time Server includes a TSync Timing card with three
LEDs that provide visual status information. See table
ator codes.
The LEDs operate in certain modes by default.
Table 2-5:
LED Color
green
yellow
red
During the states power-on,
modes are directly allocated to the LEDs, as listed below.
Table 2-6:
Power-On
Self-Test
Waiting for Host
Download from Host
Initialize
Never Synchronized
42
LED colors
Function
SYNC Unit is synchronized: A valid external time or
1PPS reference is present, disciplining the
onboard oscillator.
HOLDOVER Unit is in holdover: No valid external ref-
erence is present. The onboard oscillator is
not disciplined by an external reference, but
continues to provide time/frequency for the
duration of the user-set holdover time
(default = 7200 seconds [= 2 hours]).
ALARM The unit does not provide a time or fre-
quency signal.
self-test
LED flash patterns
State
green
/SYNC
On
On
Blink
Strobe
Off
Off
LED Colors
Meaning
, wait-for-host , and
Color/FUNCTION
yellow red
/HOLDOVER /ALARM
Off Off
On On
Off Blink
Strobe Strobe
Off Off
Off Off
CHAPTER 2 • VelaSync User's Manual Rev. 3
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