Specifications

Installation and Operation Manual Chapter 5 Monitoring and Diagnostics
ASMi-52 Ver. 2.8 Performing Diagnostic Tests 5-21
Figure 5-20. Loopback with Multiplexer Units
Running the Local Loopback
The local loopback (LLB) checks the performance of the local ASMi-52 modem,
the local DTE and the connection between them (see
Figure 5-21 ). The LLB can
be performed separately on the local and remote modems.
ASMi-52 allows you to set the loopback timeout causing the LLB to deactivate
automatically after the required period of time.
Timeout set to 0 (zero) is endless. Avoid setting timeout to 0 as the local control
is lost during LLB.
Local
DTE
Data
Local ASMi-52
Data
Clock
Clock
Line
Interface
Glue
Logic
Transmit
Receive
Figure 5-21. Local Loopback
Note