Fluke DSP-2000 Manual do Utilizador descarregar pdf (Página 84)

DSP-100/2000

Users Manual

4-8

TDX Analyzer Plot

To view a TDX analyzer plot for a set of cable pairs, use D U to highlight the

pairs, then press #View Plot to see the plot screen for the pairs. Figure

4-2 shows an example of a TDX analyzer plot and Table 4-3 describes the items

on the screen.

gc20c.eps

Figure 4-2. Example of a TDX Analyzer Plot for a Good Twisted Pair Cable Run

Table 4-3. Items on a TDX Analyzer Plot

Item Description

1 The cable pairs relevant to the results.

2 The distance along the cable under test. The 0 at the left of the scale represents the

location of the main test tool.

3 Magnitude of crosstalk on the cable pair. A peak over 50 indicates a crosstalk level

that exceeds the limit specified by the selected test standard. Crosstalk levels are

adjusted to compensate for cable attenuation.

4 The Cursor Readout shows the distance to the crosstalk source at the cursor’s

position. Use L R to move the cursor left or right.

5 Use D U to change the maximum distance of the horizontal scale.

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Fluke DSP-2000 Manual do Utilizador Página 84