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990DSL
Users Guide
Figure 6-1 is a typical TDR Auto-Test result screen. It has the following
elements:
•
Pair Status Message
highlighted (
CopperPro derives by interpreting results from all of the individual tests
that it runs. The
refers to the current amount of magnification used to display the trace.
•
Launch Pulse
screen.
•
Launch Cursor (C1)
pulse. To manually move the launch cursor, press F to move right and H
to move left.
•
Reflection Pulse(s)
6-1) or negative pulses to the right of the launch pulse.
•
Reflection Cursor (C2)
largest reflection pulse. To manually move the reflection cursor, press G
to move right and I to move left.
•
TDR test parameters
screen. The symbols and abbreviations have the following meanings:
♦
∆
: Distance between position of launch cursor and reflection cursor.
C
♦
Range or Pulse
♦
: Power filter status (in Figure 6-1, the user turned it off).
Fltr
♦
: Trace smoothing filter (in Figure 6-1, the user turned it off).
Avg
♦
VOP
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6-8
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: shown in the upper right corner of the screen and
Open @ 916 ft
setting displayed at the top center of the screen
Gain
: appears as the larger, positive pulse on the left side of the
: the vertical line that marks the start of the launch
: appear as smaller positive pulses (as seen in Figure
: the vertical line that marks the position of the
: shown in the top center portion and base of the
: Launch pulse-width (in nanoseconds).
: Velocity of propagation factor that is specified in the setup.
). This is a final overall result that the
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