Fluke CableAnalyzer DSP-4000 Series, Руководство пользователя

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DSP-4000 Series
Users Manual
2-32
Selecting a Test Standard and Cable Type
The test standard and cable type you select determine which standards are used
and which tests are run during cable testing. The test tool is equipped with
information for all the common test standards and cable types.
Several of the test standards for twisted pair cable are defined for both a channel
and a basic link configuration. The test limits for a channel are looser than those
for a basic link because the channel limits allow for the effects of two connections
at a horizontal cross-connect and a transition connector near the
telecommunications outlet in the work area. Figures 2-4 and 2-5 earlier in this
chapter show the connections involved in a basic link and a channel. Chapter 7
further explains these connections.
Note
The test tool displays a message if you try to run a test not supported by the
attached link interface adapter.
To select a test standard and cable type, proceed as follows:
1. Turn the rotary switch to SETUP.
2. Press
! Choice
. The standards list starts with the last five standards
used. Press
$ Page Down
to see more standards.
3. Use
D U
to highlight the test standard you want.
4. Press
E
to accept the highlighted test standard. The test tool displays a
menu of the cable types valid for the selected test standard.
5. Use
D U
to select the cable type you want; then press
E
.
6. If you selected a shielded cable type, the next display lets you enable or
disable the shield test. Use
D U
to select the setting you want; then press
E
.
You can test cables for NEXT, ELFEXT, PSNEXT, ELFEXT, attenuation, and
ACR, and PSACR up to 350 MHz Currently, no standards specify cable
performance beyond 250 MHz, so there are no test limits for these measurements.