Specifications

Installation and Operation Manual Chapter 7 Application Tutorial
ASMi-52 Ver. 2.5 Equipment List 7-13
³ To run the local loopback test:
1. Access the local LRS-16.
2. From the Main menu, select Diagnostics> Local tests.
The Local Tests screen appears.
LRS-16
Diagnostics>Local tests
1. Link Number[1 - 16] ... (1)
2. Test type > (Disable)
3. Test time out[0 - 4096] ... (0)
4. Bert Pattern > (2E-15)
>
f-Forward; b-Backward
ESC-prev.menu; !-Main menu; &-Exit 1 M/ 1 C
Figure 7-19. Local Tests Screen
3. Select the Link (port) number.
4. Set the Test Type as one of the following:
 LLB - A loop towards the E1 link of LRS-16 (in E1 framer of LRS-16)
 DTE-LLB - A loop towards the E1 link of LRS-16 (in FPGA of LRS-16)
 RLB - A loop towards the E1 link of LRS-16 (in E1 framer of ASMi-52)
 LINE-RLB - A loop towards the E1 link of LRS-16 (in FPGA of ASMi-52)
 BERT - BERT loop towards the SHDSL link
 BERT+RLB - BERT loop towards the SHDSL link + RLB loop request on
remote unit.
5. Set the Loopback Timeout to 1000 seconds.
6. Set a BERT test pattern that you intend to perform (2E-15 or Alternate
towards the SHDSL link), and press <S> to save the changes.
7. After finishing the tests, select Test Type> Disable to disable all loopbacks.
8. Press <S> to save the changes.
Running Remote Loopback Tests
The remote loopback (RLB) checks the performance of both the local LRS-16 and
remote ASMi-52 modems, and the lines connecting them
LRS-16 allows you to set the loopback timeout causing the RLB to deactivate
automatically after the required period of time.
³ To run the local loopback test:
1. Access the local LRS-16.
2. From the Main menu, select Diagnostics> Remote tests.