IMC Networks iMcV-DS3/E3/STS Operation Manual page 10

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.
By default this feature is set to Disabled.
This feature can only be selected by setting the DIP Switches manually.
Loopback Testing
The iMcV-DS3/E3/STS includes two loopback test modes: Coax Loopback and Fiber
Loopback.
The following illustrations show the path that a signal takes in each of the loopback
test modes.
Each loopback performs the following:
• Redirects the incoming signal back out to the origin while continuing to transmit
downstream.
• Blocks downstream data from arriving on the looped data line.
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