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CE4000 Cable Explorer TDR
User Manual
40
PEAK HOLD
The Peak Hold (F3) function key will cause the CE4000 display
to hold the worst-case peak measurements—both positive (near
open) and negative (near short), as shown in Figure 3-10.
The positive peak trace is displayed in blue, the negative peak
trace in green and the normal trace (current test result) in purple.
In Figure 3-10, note that the highest loss (worst case) is held
on the display (at 470 feet), while the current display (less
positive result) is displayed below the worst-case result. Use
this display type to troubleshoot intermittent-type problems
where the cable may alternately test good and then bad. While
in the Peak Hold mode, the user would flex or stress the
components under test to see if good or bad results can be
displayed. The TDR captures the worst-case results.
Note: The display update speed will slow down, since the
TDR is displaying three separate traces alternatively.
Figure 3-10