FarSync Drivers

Farsync T-Series LED Operation

LED identification for T1U

There are 2 LEDs on the FarSync T1U located next to the connector for the cable, but only one of them will operate.  The unused LED is permanently off.

LED identification for T2U, T2Ue

There are 2 LEDs on the FarSync T2U and T2Ue located next to the connector for the cable.  The LED nearest to the cable reports the state of Port A, the other reports the state of PortB.  These LEDs are used to reflect the line status of each of the ports.

LED identification for T4U, T4E, T4Ue

There are 4 LEDs on the FarSync T-Series Adapters located next to the connector for the cable.  Port A is the top left LED. These LEDs are used to reflect the line status of each of the ports.

LED Operation

When all the LEDs are off, the driver has not started (or has been stopped).

If the LEDs are on without flashing, then the driver has been started, but no clock has been detected on the line. Or the line is not currently open (e.g. has not been ifup'd).

With a cable connected, if the LED flashes, then a clock has been detected (whether internal or external).

If each of the LEDs flash out of phase then each port is generating/receiving a clock signal.

If all of the LEDs flash in phase then this indicates that the card is currently in the "card-identify" state (see the farutil command for more information).

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