ELSA Cable manual Meanings of the specific blink codes, Sync

2Introducing the ELSA MicroLink Cable

ON	This LED flashes once when the power supply is switched on. After the self-test, either
	an error is output by a flashing light code or the device starts and the LED remains lit.
	Off		Unit switched off, power supply plugged in
	red	1 x short	Boot procedure (test and load) started
	red	flashing	Display of a boot error (flashing light code)
	red		Device ready for use

Standby

Cable-Tx, -Rx, -Sync, Reg’d

This LED shows that the unit is in stand-by mode. The ELSA MicroLink Cable is registered with the cable network provider in this state, but there is no active connection to the local network. In other words, no data can be exchanged between the Internet and the LAN in this state.

The ELSA MicroLink Cable can be switched to this mode by configuring the function of the power switch correspondingly and then actuating this switch on the rear of the unit.

These LEDs display the status of the interface to the cable network:

Cable-Tx	yellow	Data packet sent from the device to the Internet
Cable-Rx	green	Data packet received from the Internet
Cable-Sync	green	The device has found a channel on which it can communicate with the
		cable network operator's headend.
Cable-Reg’d	green	The registration and all required negotiations between the unit and the
		headend have been completed and the registration confirmed by the hea-
		dend. The unit is ready to exchange data with the Internet in this state.

Blink codes	The Sync and Reg’d LEDs can display the various phases of the cable modem registration
	through combined blink codes, thus offering configuration troubleshooting information.
	The meanings of the specific blink codes:
	SYNC	REG'd	What has been achieved so	What is the modem trying to do?
			far?
	off	off		channel search with 64/256QAM chan-
				nel
	1 pulse	off	QAM lock	FEC lock
	2 pulse	off	FEC lock	TRC lock
	on	off	TRC lock	initial ranging
	on	1 pulse	initial ranging	DHCP
	on	2 pulse	DHCP	ToD
	on	3 pulse	ToD	Configuration file
	on	4 pulse	Configuration file	Registration
	on	on	Registration

ELSA MicroLink Cable