RAD Data comm ASMi-52 manual Running the Local Loopback, Loopback with Multiplexer Units

Chapter 6 Troubleshooting and Diagnostics Installation and Operation Manual

Figure 6-20. 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 6-21). 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.

Note Timeout set to 0 (zero) is forever. Avoid setting timeout to 0 as the local control is lost during LLB.

Local

DTE

Data

Clock

Data

Clock

Transmit

Receive

Local ASMi-52

	Line
Glue
	Interface
Logic

Figure 6-21. Local Loopback

6-20 Testing ASMi-52 ASMi-52 Ver. 2.5