Chapter 5 Datacom Testing
Specifying test settings
54 SmartClass E1 Tester User’s Guide
2 On the Configuration menu, select Interface, and then select one of the
following:
– RS-232/V.24
–X.21
–EIA-530
–V.35
– RS-449/V.36
– Codirectional Timing
– Contradirectional Timing
– Centralized Timing
3 Also determine what cables you will need to connect the E1/Datacom
Tester to the test circuit. See Table 5 on page 4.
You have finished specifying the interface standard.
Specifying timing parameters
The following sections describe how to configure the timing mode and the
timing source for transmitted and received data.
Specifying the timing mode
If you are testing an RS-232 interface, you can configure the E1/Datacom
Tester to use either synchronous or asynchronous timing.
To specify the timing 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 Timing Settings.
3 Select Timing Mode, and then select either Asynchronous or Synchro-
nous.
After you specify the timing mode, you should specify the transmit and
receive timing.
You have completed specifying the timing mode.
Specifying transmit and receive
timing
The following procedure describes how to specify the clock source for received
and transmitted data.
To specify the clock source for received and transmitted data
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 Timing Settings.
3 Select the appropriate transmit and receive options:
– Tx Timing (only available in DTE or DCE emulation modes)
– DTE Rx Timing (only available in DTE emulation or monitor mode)
– DCE Rx Timing (only available in DCE emulation or monitor mode)
A menu of timing options appears.
4 Select the appropriate timing.
You have finished specifying the clock source for transmit and receive timing.
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