OneExpert DSL User's Guide
22052280, Rev. 015
April 2019
Chapter
4 xDSL / G.fast Testing
93
Terminating the loop (SELT)
Single End Loop Test (SELT) is used to test a copper loop when there is no equipment installed
at the far end. It is typically used for pre-qualification, that is, testing to determine whether
a loop is capable of supporting DSL service. In some cases, SELT testing is aided by placing
a termination at the far end of the line. This test sets the VDSL modem to provide a line
termination where the modem is idle and not transmitting.
1. On the right panel of the OneExpert DSL, connect one end of the test cable to the
DSL
connector, and the other end to the line under test.
2. From the main menu, select
DSL
, and then select
Single DSL
.
3. Access the Tray menu by either swiping downward from the top to the bottom of the
screen or by pressing the
Tray
button.
4. Select the
SELT
button.
After initializing the modem, the SELT verification screen is displayed.
5. The far-end technician can continue testing.
Running a OneCheck DSL test
The OneCheck DSL test is a VIAVI out-of-service single or bonded pair closeout test. It
automatically performs a series of DSL measurements, and compares results to user-defined
threshold values and provides a pass, marginal, or fail indication.
Depending what you have enabled in the OneCheck DSL Editor profiles, the following tests are
now available: DSL Network, Ping, Ookla Speedtest, Broadcom SpeedService, TruSpeed, VoIP,
and Video. See the next section for more details.
1. Connect your instrument to the line under test.
2. From the
OneCheck DSL
menu, select one of the
available profiles:
Single ADSL, Bonded ADSL,
Single VDSL, Bonded VDSL, Single Auto-
detect, Broadcom G.fast,
or
Sckipio G.fast
. You
can either customize these profiles or use the
defaults.
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Страница 144: ...Chapter 7 Wiring Tools OneExpert DSL User s Guide 22052280 Rev 015 April 2019 144 ...
Страница 158: ...Chapter 9 WiFi Testing OneExpert DSL User s Guide 22052280 Rev 015 April 2019 158 ...
Страница 172: ...Chapter 11 Testing with SmartIDs OneExpert DSL User s Guide 22052280 Rev 015 April 2019 172 ...
Страница 224: ...Chapter 13 Copper Testing OneExpert DSL User s Guide 22052280 Rev 015 April 2019 224 ...
Страница 236: ...Chapter 14 Fiber Testing OneExpert DSL User s Guide 22052280 Rev 015 April 2019 236 ...
Страница 244: ...Chapter 14 Using the OneExpert with a Mobile Device OneExpert DSL User s Guide 22052280 Rev 015 April 2019 244 ...