Sunrise Global CE4000, Cable Explorer TDR Module user manual Next

Chapter 3

Measurements

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views of the data are available by pressing the Nest (F1) function key to display the next fault or the Adjust (F2) function key to adjust the vertical gain or horizontal gain (range).

Two stored files may be compared by pressing the Compare (F3) function key and selecting a second saved file.

DISPLAY CONTROLS

The Up and Down arrow keys adjust the vertical gain. Increasing the vertical gain shows smaller reflections from faults (higher return loss). The Left or Right arrow keys adjust the horizontal gain (range) of the display as shown in Figure 3-21. In comparing Figure 3-21 to Figure 3-22, notice that the horizontal scale has increased from 250 to 500, showing a second fault at 480.

Figure 3-21

NEXT

The Next (F1) function will sequence the CE4000’s Auto test mode from the first fault to any subsequent faults on the cable under test (Figure 3-22).

The marker is set automatically to the next reflection fault, the vertical and horizontal scales are adjusted and the measurements are displayed. If no faults are found, the CE4000 will display a message over the TDR screen, which indicates: “No Faults“ and the range of the TDR test. Once “No Faults” is found, the TDR will wrap back around to the original test screen displaying the first fault.