JDS Uniphase SmartClass E1, User Manual

Page: 77 / 144

Chapter 5 Datacom Testing
Performing a self test
SmartClass E1 Tester User’s Guide 61
Performing a self test
Before you begin testing, you should perform a self test on the E1/Datacom
Tester to make sure it is operating properly on the selected interface standard.
You can test the E1/Datacom Tester and the test cable.
To perform a self test on the E1/Datacom Tester
1 Configure a test.
2 On the test menu, select Action .
3 Select Self Loop , and then select one of the following options:
– Enable Internal Loop — This option connects the transmitter to the
receiver without involving amplifiers or cables. Skip to step 5 .
– Enable Cable Test — This option tests the amplifiers along with one of
the emulation cables. When you select this option, the E1/Datacom
Tester automatically sets the Rx Input setting to unterminated and the
Tx Timing setting to Tx SYNTH. The maximum data rate supported for
this option is 1 MHz.
Proceed to
step 4 .
4 If you selected Enable Cable Test, connect the cable's DCE connector to
the DTE connector.
5 After you have connected the emulation cables (if applicable), select
Restart from the Action menu.
6 On the test menu, select Results .
If an “All Results OK” message appears, the unit and interface are oper-
ating properly.
If errors appear in the Summary result category, there is a problem with
the E1/Datacom Tester or the cables.
You have completed the self test.
Connecting the E1/Datacom Tester to the circuit
To connect the E1/Datacom Tester to the circuit, you must have the correct
adaptor cable for the test operation and the interface standard you want to test.
For a list of available cables, see
Table 6 on page 7 . For information on
ordering cables, contact your local JDSU sales office.
The following sections describe how to connect the E1/Datacom Tester for
monitor or DTE/DCE emulation tests.
NOTE:
All DTE and DCE emulation cables have yellow bands. All monitor cables
have blue bands.
When you connect a cable to the E1/Datacom Tester and the Signal result
screen is currently visible, the unit will display the cable type in the lower
right corner of the screen.