B&B Electronics 850-14200--95 - Manual - Manual (Page 12)

9
Loopback Selection
This option allows the user to set the Loopback location on the module.
Loopback is a diagnostic tool that enables the user to test the integrity of the line
by allowing the data to be looped back. The following independent loopback
locations are included on the module:
Analog
Loopback Set this switch on the Remote module to loop the data back
from the remote copper port (refer to the Remote Copper
Loopback Mode section for more information).
Local Loopback Set this switch on the Remote module to loop the data back
from the remote fiber port (refer to the Remote Fiber
Loopback Mode section for more information).
Remote
Loopback Set this switch on the local module to loop the data back
from the local fiber port (refer to the Local Fiber Loopback
Mode section for more information).
Refer to the Loopback Testing section for application examples of the loopback
testing modes.
Remote Unit
This option allows the user to enable Remote Unit on the module. The Remote
Unit feature is designed to work only as the remote module of the Local/Remote
pair in the required Master/Slave configuration. With Remote Unit enabled, the
user can easily perform the following:
• Test the line integrity of the remote copper port.
• Use the Local unit to configure all SNMP-configurable features for both
units.
• Use the Local unit to download firmware for both units.
Refer to the Module LED Functions section for more information.
NOTE
When the user enables the Remote Unit feature on the remote module, it is necessary
to disable SNMP-management on the chassis in which the remote unit is installed (i.e.
turn the iMediaChassis enter chassis SNMP switch off, or do not install an SNMP