i50 Manual (5.51)
Page 12
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www.datalinksystemsinc.com
4.4 LED Status Indicators
The i50 has two light-emitting diodes (LEDs) attached to the Program connector on the front panel.
These lights flash to indicate what mode the unit is in. The following states can be shown:
Power Up:
NET and GPS LEDs turn green briefly when power is applied
No Settings:
NET and GPS LEDs switch between red and green every second
Programming:
NET and GPS LEDs switch between red and green rapidly
Error:
NET and GPS LEDs alternate red rapidly (see section 6.8)
Sleeping:
NET LED flashes orange (red plus green) every two seconds
GPS LED off
When the unit is in normal operating mode, the LEDs are used to show network and GPS status, as
follows:
NET LED:
Red flashes: no network signal
Green flashes: network and server OK
Red and green flashes: network OK, but can’t access server
One flash per second: no data in buffer
Two flashes per second: data waiting to be sent
Three flashes per second: alarm active (ACK received)
Four flashes per second: alarm active (waiting for ACK)
GPS LED:
Red flashes: no GPS signal - check antenna position
Green flashes: GPS signal OK
LED off: Periodic wakeup mode with GPS turned off
One flash per second: GPS antenna OK
Four flashes per second: GPS antenna short circuit
