Viavi ONX-220, Руководство пользователя

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ONX-220 User's Guide
22135173, Rev. 000 June 2020 84
Chapter 4 CATV Testing
ChannelCheck
The Channel Check test provides real-time analysis of Downstream QAM and Analog
Carriers.
The ChannelCheck test conducts the same test done by OneCheck Upstream checking for
interference into the signal. It analyzes OFDM carriers including multiple DS profiles.
Channel check can also be used to quickly check levels and signal performance.
To run a ChannelCheck
1. Select ChannelCheck under the CATV menu header. The ChannelCheck Setup
screen appears.
2. Select the desired demarcation point to be tested: Tap, Ground Block or CPE. A
graphic showing the appropriate connection schematic for this test will appear
along with appropriate instructions for the port to be used.
3. Assign this test to a saved work order (optional but recommended).
Select the Work Order ID button and the list of available work orders will
appear. Select one.
4. Start the test by selecting the
Start
button at the bottom of the screen.
Results
For a detailed discussion of the results produced by this test, see "ChannelCheck results"
on page 176 .
Saving results
To capture a snapshot of the results for review, press the Stop button.
To save for later review, press the
Save
button and then give them a name.