Specifications

Chapter 5 Troubleshooting and Diagnostics Installation and Operation Manual
5-8 Testing ASMi-31 ASMi-31 Ver. 3.0
Combining BER Testing with Loopbacks
You can also combine the LLB and RLB with the BER testing by activating a
corresponding loopback and BERT simultaneously.
The ASMi-31 management software allows you to combine the channel or remote
digital loopbacks with BERT by selecting LLB+BERT or RLB+BERT from the TEST
menu.
When combining the BER testing with one of the loopbacks, an internal pattern
generator connects the standard 511-bit pattern to the transmit input of the DTE
interface. The receive output is connected to the pattern evaluator, which
compares the received and transmitted patterns, and detects errors.
Running the LEDs Test
The LEDs test enables you to check that the LED indicators on the modem's front
panel are functioning properly.
 To run the LEDs test:
1. Press the CURSOR button to move the cursor to the Menu Type field.
2. Press the SCROLL button until TESTS is displayed.
3. Press the CURSOR button to move the cursor to the Menu Options field.
4. Press the SCROLL button until LEDS TEST is displayed (see
Figure 5-8 ).
5. Press the ENTER button to start the LEDs test.
All the LEDs light briefly and then return to their normal status.
TESTS
LEDS TEST
LLB
RLB
LLB+BERT
RLB+BERT
BERT
LEDS TEST
Figure 5-8. Running LEDs Test