JDS Uniphase SmartClass E1, Руководство пользователя

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Chapter 5 Datacom Testing
Specifying test settings
SmartClass E1 Tester User’s Guide 53
A test menu appears for the application, listing the following options:
– Configuration. Select this option to configure your test.
– Results. Select this option to observe test results associated with your
test.
– Error (*). Select this option to specify errors to insert or to begin
inserting errors.
– Action. Select this option to perform key actions required for your test,
such as starting or restarting a test, starting traffic or looping up a unit.
You can also press the Action button at any time to view a menu of
actions applicable to your test.
The datacom application is launched.
Specifying test settings
Before you begin testing with the SmartClass E1/Datacom Tester, you should
specify the characteristics of the circuit that you will connect to the tester.
Specifying the test mode
You can operate the SmartClass E1/Datacom Tester in three different test
modes: Monitor, DTE Emulation, or DCE Emulation. The following procedure
describes how to set the test mode.
To specify the test mode
1 If you haven’t already done so, launch the Data Communication applica-
tion (see
“Launching the datacom application” on page 52 ).
2 On the Configuration menu, select Test Mode , and then select one of the
following:
– DTE –
If the
E1/Datacom Tester
is establishing a link directly to a DCE you
should configure the
E1/Datacom Tester
to emulate a DTE.
– DCE –
If the
E1/Datacom Tester
is establishing a link directly to a DTE you
should configure the
E1/Datacom Tester
to emulate a DCE.
If your network is secured using an encrypting device (located in between
the E1/Datacom Tester and the device on the far end), the encrypting
device represents a DTE to a DCE, and a DCE to a DTE. Therefore, you
should determine the emulation mode for the encrypting device, and then
configure the E1/Datacom Tester to emulate the opposite type of device.
–
Monitor – To non-intrusively monitor performance in both directions on
a circuit, select Monitor. A Y-cable is needed.
You have finished specifying the test mode.
Specifying the interface
standard
The Datacom application supports the following interface standards: RS-232/
V.24, X.21, EIA-530, V.35, RS-449/V.36, Codirectional Timing, Contradirec-
tional Timing, and Centralized Timing. The following procedure describes how
to select an interface standard for the test.
To specify the interface standard
1 If you haven’t already done so, launch the Data Communication applica-
tion (see
“Launching the datacom application” on page 52 ).