I-DSL64 USER’S MANUAL
23
4.4.3
To Execute CSU Loopback
4.4.3.1
LT Mode
Step 1
Enter ”DEVICE DIAGNOSTIC” screen, then press (Enter)
DEVICE
DIAGNOSTIC
Step 2
Use
(
Left arrow) or
(
Right arrow) to choose “CSU
LOOPBACK”, then press (Enter) .
CSU
LOOPBACK
Step 3
Use
(
Left arrow) or
(
Right arrow) to choose “B1”, “B2” or
“2B+D”, then press (Enter) .
* CSU LOOP *
RTN B1 B2 2B+D
Step 4
The CSU loopback is executed successfully when the LCD
shows ”-- CSU LOOP — REMOTE B1 OK!!”, ”-- CSU
LOOP — REMOTE B2 OK!!” or ”-- CSU LOOP —
REMOTE 2B+D !!” and the Loop LED is turned on.
-- CSU LOOP --
REMOTE B1 OK !!
-- CSU LOOP --
REMOTE B2 OK !!
-- CSU LOOP --
REMOTE 2B+D OK !!
Step 5
Use
(
Left arrow) or
(
Right arrow) to choose “RTN”, then
press (Enter) .
* CSU LOOP *
RTN B1 B2 2B+D
Step 6
When the LCD shows “ -- CSU LOOP – REMOTE RTN
OK !! ”, the CSU loopback has been released. The Loop LED
is then turned off.
