1.3.1.1 Blinking Intervals
The status LEDs can communicate four different operating states:
"OFF"
"ON"
"FAST": blinking interval @ 2Hz
"SLOW HEARTBEAT": sinus-shaped interval @ 1Hz
1.3.1.2 LED Lighting Patterns
The table below indicates LED status light patterns for common SecureSync
operating statuses.
Table 1-1: Common light patterns
Start-up ON OFF OFF OFF OFF OFF OFF
Software
upgrade/re-
boot
HEARTBEAT PATTERN INORDER,
BECOMINGSOLIDLEFTTORIGHTTOREPRESENTPROGRESS
1.3.1.3 Legend, individual LEDs
Table 1-2: Legend for Status LEDs
Icon Light Meaning
OFF No power
ON Powered
OFF No GNSS reception (0 satellites)
HEARTBEAT GNSS acquisition in process (≥1satellite(s), or 1PPS OK, or
Time OK
FAST Antenna short circuit
ON GNSS is available as reference (1PPS and Time OK)
1.3 SecureSync Front Panel
CHAPTER 1 • SecureSync 2400 User Manual Rev. 5.2
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