Fluke 990DSL - ATU-C Test; Running an ADSL Verify Test; Setting up an ADSL Verify Test

990DSL
Users Guide
5-38
This test may either be performed at installation of the DSLAM or modem to
verify service turn-up, or as a diagnostic tool to help pinpoint the root problem
during ADSL trouble calls on existing services.
The ATU-C test should be run at the customer’s location in order to get
meaningful bit-rate information over the entire loop. The ATU-R test can be
performed at either the DSLAM or customer’s location, as it is used only to
verify operation of the modem and not to obtain bit-rate information.
Setting up an ADSL Verify Test
There are no setups required for this test. The test is not modem-vendor
specific and works equally well on all network equipment conforming to ANSI
TI.413, ITU G.992.1 or G.992.2.
Running an ADSL Verify Test
From the Main menu (Figure 3-2), select ADSL Verify Test and then press
L.
The ATU-C Test / ATU-R Test option screen is displayed.
ATU-C Test
To test the line and DSLAM for performance, do the following:
1. At the customer’s location, disconnect the outside line from the ADSL
modem.
2. Connect the tester pair 1 test leads to the Tip, Ring, and Ground terminals
of the outside line.
3. Press A(ATU-C Test), then press K.