RAD Data comm ASMI-450 Step Action Key Display, Normal Front-Panel Indications, Fault Indications

For DC-poweredASMi-450 units, disconnect the power cable.

ASMi-450 Installation and Operation Manual

Front-Panel Operating Instructions

In Table 5-1, you will find two types of alarms, designated as ON/OFF and ON:

∙A message indicating an ON/OFF alarm is displayed only when the alarm condition is present, and is automatically removed when the condition is cleared (if the alarm is being displayed, it will disappear only when the display is refreshed by scrolling).

∙A message indicating an ON alarm persists even after the event that caused the alarm condition is cleared.

If the ASMi-450 operates normally, but an alarm message of the ON type is displayed, you can clear the event alarm message from the display by the following procedure:

Step	Action	Key	Display
1	Bring the cursor in the second row, under	CURSOR
	CLEAR
2	Press ENTER to clear the event messages in	ENTER	If no state alarms are present, the second row
	the alarm buffer		should show EMPTY

	Normal Front-Panel Indications
	During normal operation, all the ASMi-450 front-panel indicators are off.
	Ethernet Interface Indications
	During normal operation, the LINK indicator must light continuously. The
	COLL, TX, and RX light according to LAN traffic conditions.
Fault Indications	If the LOS indicator and/or the TST indicator lights, data transfer is interrupted.
	∙ The TST indicator lights when a test is active. If the test is activated from
	the local ASMi-450, you can see the test type by entering the TEST
	OPTIONS (Chapter 5). You can disconnect a local or remote loop as
	explained in Chapter 5.
	∙ The HDSL LOS indicator lights when a local loss of synchronization alarm
	condition is present on the corresponding line.
	∙ When using the Ethernet interface, the rear LINK indicator will turn off if
	the Ethernet LAN is not connected, or not operating properly.
	If the COLL indicator lights continuously, this indicates that a permanent
	state of collision is present on the LAN. This may be caused by
	malfunctioning LAN equipment, however it may also occur in case a test
	loopback is activated on the ASMi-450. Check and deactivate any test
	loopback on the local and remote ASMi-450 units.
Turn-off	For AC-powered ASMi-450 units, set the rear power switch to OFF.

3-12