RAD Data comm T1 Manuel D’Utilisation

 

Front Panel Controls and Indicators 

3-1 

This chapter provides the following information for the FOM-E1/T1 standalone 
modem: 
•  FOM-E1/T1 front-panel indicators and controls 
•  Operating procedures (turn-on, front-panel indications, performance 

monitoring and turn-off). 

•  Installation procedures given in 

 must be completed and checked 

before attempting to operate FOM-E1/T1. 

 shows the FOM-E1/T1 front panel. 

 lists the FOM-E1/T1 

controls and indicators. 

 

PWR 

Green LED 

ON – FOM-E1/T1 is powered up 

LOC 

Yellow LED 

ON – A local loopback is active 

REM 

Yellow LED 

ON – A remote loopback is active 

TEST 

Slide switch 

LOC – Activates local analog loopback 
REM – Activates remote digital loopback 
NORM – Normal operation (no loopbacks are active)  

ELECTRICAL LOW 

Red LED 

ON – E1/T1 electrical input is below G.703 level 

ELECTRICAL AIS 

Yellow LED 

ON – E1/T1 electrical interface received "All 1s" string 

OPTICAL ERR 

Red LED 

ON – Bit error rate of the signal received from at the optical 

interface is 10

-6

 or worse 

OPTICAL AIS 

Yellow LED 

ON – Fiber optic interface received "All 1s" string