Chapter 3. Operation ASM-20 Installation and Operation Manual
3-4 Operating Instructions 6/4/99 13:13
Activation of Tests In order to verify that the ASM-20 is operating correctly, use the internal
BERT and analog loopback tests as described in Bit Error Rate Tester (BERT) in
Chapter 4 and Local Test - Analog Loopback in Chapter 4.
Operational
Jumper and
Switch Changes
If you need to reconfigure the ASM-20 for a different type of operation, the
jumpers and switches must be changed to correspond to the new operating
mode.
Warning
Only authorized or qualified personnel should have access inside the
equipment. Disconnect the ASM-20 power cable before opening the top
cover.
For guidance in repositioning the jumpers and switches, refer to Electrical
Installation in Chapter 2. The equipment will become unsafe for connection
to telecommunication networks in some locations, if the signal ground is
disconnected from the chassis ground.
Power Off
Procedure
To turn off the AC power to the ASM-20, simply remove the AC power cord
from the AC source.