RAD Data comm manual Normal Indications, ASMi-52 Front Panel LEDs, ASMi-52 Rear Panel LEDs

Installation and Operation ManualChapter 3 Operation

	Table 3-1. ASMi-52 Front Panel LEDs
Name	Function
PWR (green)	On – Power is ON
TST (red)	On – A loopback test is active in a local or remote unit
SYNC A	On (red) – Link A is not synchronized
(red/green)	On (green) – Link A is synchronized
	Blinks – The line is connected properly and the
	synchronization process is taking place

SYNC B (red/green)

On (red) – Link B is not synchronized

On (green) – Link B is synchronized

Blinking – The line B is connected properly and the synchronization process is taking place

AIS (yellow)	On – “All 1s string” is received at the E1 interface
YELLOW (yellow)	On – “All 1s string” is received at the T1 interface
E1/T1 SYNC (red)	On – Loss of E1 or T1 synchronization
DATA (yellow)	Blinking – Data is being transferred
ALM (red)	On – An alarm enters the buffer of local or remote unit
ACT (yellow)	For Ethernet, blinks according to the Ethernet traffic activity
	(10/100BaseT connector), available only when multiplexed

	Table 3-2. ASMi-52 Rear Panel LEDs
Name	Function
ACT (yellow)	Blinks according to the Ethernet traffic activity (10/100BaseT
	connector)
LINK (green)	On – Good link integrity (10/100BaseT connector)

Normal Indications

Upon turning on ASMi-52, the PWR LED in the front panel lights to indicate that ASMi-52 is on. Table 3-3shows the correct status of the indicators a few seconds after the units were synchronized.

Table 3-3. ASMi-52 Indicator Status

Indicator	Status
PWR	On
TST	Off
ALM	Off
SYNC	On (green)

If the above LED indications do not appear following initial power activation, refer to Chapter 5 for the diagnostic test instructions.

ASMi-52 Ver. 2.5 Controls and Indicators 3-3