Chapter 5 Datacom Testing
BER Testing
SmartClass E1 Tester User’s Guide 63
3 Connect the other end(s) of the adaptor cable to the test access point.
You have finished connecting the cables.
BER Testing
Performing a bit error rate test (BERT) involves configuring the test settings,
including logic error insertion; connecting the E1/Datacom Tester to the a
circuit; starting the test and inserting logic errors; and observing the results.
To do a bit error rate test
1 Set the test mode to DTE or DCE Emulation. See “Specifying the test
mode” on page 53.
2 Select a pattern. See “Specifying a BERT pattern” on page 55.
3 Specify the other settings on the Configuration menu, as needed.
See “Specifying the interface standard” on page 53.
See “Specifying timing parameters” on page 54.
See “Specifying polarity settings” on page 55.
See “Specifying data parameters” on page 57.
See “Specifying async settings” on page 58.
See “Specifying flow control settings” on page 59.
See “Specifying G.821 performance settings” on page 60
4 Specify how errors will be inserted. See “Specifying error settings” on
page 60.
5 If you want to run the test for a specific amount of time, configure the timed
test settings. See “Timed testing” on page 25.
6 If this is your first test of the day, perform a self test on the E1/Datacom
Tester. See “Performing a self test” on page 61.
7 Connect the E1/Datacom Tester to the circuit. See “Connecting the E1/
Datacom Tester to the circuit” on page 61.
8 From the Action menu, select Restart.
9 Verify that the Sync LED illuminates green.
10 To insert errors, press the * Action key to view the Error menu, and then
select press 1.
This will do one of the following:
– Enable or Disable Bit Error Rate Insertion — begin inserting bit
errors at the rate specified on the Error Settings menu (appears only if
the Rate Type is set to “Rate”).
– Bit Error Multi Insert — inserts multiple bit errors with each press
(appears only if the Rate Type is set to “Multiple”).
– Bit Error Insert — inserts one bit error with each press (appears only if
the Rate Type is set to “Single”).
11 From the BERT menu, select Results and then the BERT category.
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