Chapter 4 E1 Testing
Measuring Jitter
SmartClass E1 Tester User’s Guide 45
The settings are configured.
Connecting to the circuit
After specifying test settings, connect the E1 Tester to the line under test at the
test access point.
To connect to the line
1 Connect the E1 Tester to the test access point:
– Connect the 2M Reference Clock cable from the SmartClass E1 RX2/
Ext Clk jack to an E1 BITS clock or a known good reference signal.
– Connect a cable from the SmartClass E1 RX1/TX1 jack to the signal to
be tested.
Running the test
After specifying test settings and connecting to the line, you can run the test
and view the results.
To run the test
1 From the E1 Jitter menu, select Action, and then select one of the
following:
2 From the E1 Jitter menu, select Results and then select a result category.
For more information about Jitter results, see “MFC-R2 results” on
page 90.
You have completed the test.
Timed Test Settings Specify whether timed test is enabled and if
On, specify the duration.
Setting Parameter
If using Jitter mode... select...
Manual Restart
MTJ MTJ Start
FMTJ FMTJ Start
JTF JTF Calibration Start
then after it completes,
JTF Start
NOTE:
Manual jitter is the default jitter mode. It begins running when you enter the jitter
application. Selecting an MTJ, FMTJ, or JTF start will close the manual jitter applica-
tion, and selecting stop will restart manual jitter.
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