Wavetek ANT-20, Руководство по эксплуатации

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Broadband Analyzer/Generator ANT-20/ANT-20E
A-22 Application Guide
3 Detecting and analyzing ATM channels (Channel Explorer)
3.1 Overview: Basic operating sequence
The following section lists all the necessary steps, from starting the application and selecting the
scan type through to the scan itself and on to sorting the results and recording them. Further
information on the operating sequences is found in the corresponding sub-sections (see the
“More” column). Please note the settings that apply to more than one VI. The VI icons used in
the “minibar” are shown in the left-hand column as an aid to orientation.
VI Operating step More information
1. Select the virtual instruments for the ATM application
“Signal Structure” VI and “ATM Channel Explorer” VI
Sec. 1.1, Page A-1
2. Set the signal structure
Configure the physical layer and match it to the measurement task
see D on
page A-6
3. Close the “Signal Structure” VI -
4. Select the scan type
•
Select the “Activity” scan if active traffic channels are to be dis-
played
– or –
•
Select the “Trouble” scan type if channels showing alarms are to
be displayed.
5. Select the options
•
Select the interface at which the measurement is being made.
•
Deselect the inactive channels.
6. Trigger the scan
The traffic check or alarm detection procedure starts. The required
channels are entered one after the other in the results window. The
scan runs until the 1000th channel is detected or until the scan is
stopped.
7. Perform AAL analysis (“Activity” scan type)
•
Select “AAL Type” analysis if you want a tabular evaluation accor-
ding to AAL types.
– or –
•
Select “AAL Type Distribution” analysis if you want a graphical
evaluation according to AAL types.
8. Sort the channels
9. Record and/or further process the results
•
Print out the contents of the results window
– or –
•
Export the contents of the results window.
Sec. 3.4.1, Page A-24
Sec. 3.4.4, Page A-27
Sec. 3.5, Page A-29
Sec. 3.5, Page A-29
Sec. 3.4.1, Page A-24
Sec. 3.4.4, Page A-27
Sec. 3.4.2, Page A-25
Sec. 3.4.3, Page A-26
Sec. 3.6, Page A-30
see
“Channel Explorer” on-
line help
Table A-2 Overview: Detecting and analyzing ATM channels