RAD Data comm ASMi-52 Manuel D’Utilisation

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Installation and Operation Manual 
Chapter 3  Operation 
ASMi-52 Ver. 2.5 
Controls and Indicators 
3-3 
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 
(red/green) 
On (red) – Link A is not synchronized 
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 3-3
 shows 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.