Table 1-6:
Common light patterns
Start-up
HEARTB.
OFF
OFF
OFF
OFF
OFF
OFF
OFF
Acquir-
ing fix
ON
FAST
FAST
FAST
FAST
FAST
HEARTB.
FAST
Soft-
ware
upgrade
FAST
OFF
OFF
FAST
OFF
FAST
HEARTB.
OFF
1.4.3
Legend, individual LEDs
Table 1-7:
Legend for Status LEDs
Icon
Light
Meaning
OFF
No power
HEARTBEAT
Booting
ON
Powered
OFF
No GNSS reception (0 satellites)
HEARTBEAT
GNSS acquisition in process (≥ 1 satellite(s), or 1PPS OK, or Time OK
SLOW
Jamming detected
FAST
Antenna short circuit
ON
GNSS is available as reference (1PPS and Time OK)
OFF
Inputs not detected/all inputs are disabled
FAST
1 or more input is missing, or invalid timing on 1 or more input detec-
ted
ON
Inputs are enabled
OFF
Unit is in Holdover (valid)
ON
System Clock OK (valid)
FAST
Invalid Time (Holdover period exceeded, or oscillator damaged)
OFF
No output signal(s) detected/all outputs are disabled
FAST
Malfunction detected (short circuit, or overload)
ON
Outputs are enabled
10
VersaSync Getting Started Guide Rev. 8
1.4 Status LEDs
