Test-Um NT955 User Manual

Test-Um NT955 Series
Performing a Bit Error Rate Test

A Bit Error Rate Test (BERT) sends data packets from the main unit to

the remote, measures speed and errors and correlates this to a PASS or

FAIL result. This test can only be run from end to end on a single cable, it

cannot be run through an Ethernet hub or switch.

1. From the Data Manual Tests screen, select the BERT Test

button. (Figure 5.9)

2. Using the drop down dialog box, select an Ethernet speed of 1

gigabit or 100 Megabits. Press Accept

3. Select the number of bits to transfer from the drop down dialog

box. Press Accept.

4. Press the Test button to begin the run. The % Complete will

advance as the test proceeds and any errors will be reported as

the % Completed is updated. A Pass or Fail will be displayed at

the end of the test based on the industry standard of not more

than one error in 10 Gigabits transferred.

Ethernet Speed:

Bits to Transfer:

BERT Test
Untitled1.job

1 Gbit/s

10 Gbits

% Completed:

Test Rate:

Error:

Test-Um Inc.

validator

100%

2005 Aug 25

10:53:01

Figure 5.9 Bit Error Rate Test

Validator

Running Manual Tests