PAGE 2.2 - 48 OPERATION MARK IV HD J2 TAMPER
REVISED 10 -2020 JUPITER II BULLETIN 5082505
2.2
2.2.15 Surface Graph Panel - See Figure 2.2-30
1. The Surface Graph Panel on the Work or Tie Finder Screens displays the following:
(1) Surface Graph
(2) Greater Than Zero Indicator
(3) Less Than Zero Indicator
2. While tamping, the machine is assumed to be currently positioned at the bottom of the
Surface Graph Panel (1). The panel indicates the next 150 feet of desired surface
information to be applied as tamping proceeds. The horizontal gray lines are 100 feet
apart. The horizontal light cyan line indicates where a lining transition point lies when the
fitted recorded track data is available.
3. When the track ahead of the machine has been recorded with the Surface Fitting Software
Option, the green trace line represents the surface profile for the left rail and the magenta
trace line represents the surface profile for the right rail. Surface profiles are calculated
results based on measurements made when the track is recorded. The yellow trace line
marks the surface fit that is used to establish the lift to be applied. The desired surface fit is
computed automatically by the built-in surface fitting functions, or it can be set manually
using the "rubber banding" edit control points available from the Expanded Track View
Screen when the machine has the Surface Fitting Software Option.
4. For surface recordings, high points are to the left and low points are to the right on the
second panel shown. The distance from the yellow fit trace line to the green or magenta
trace lines is an estimation of the amount each rail will be lifted. Note that inadequate
ballast or poor conditions will reduce the accuracy of this estimate. If the track has not
been recorded, the distance of the yellow fit trace line to the zero or base line is a measure
of the overall lift being applied. The actual lift will be more or less, depending upon any
track errors.
a. Any manual adjustment to the recorded surface is displayed in the left slider of the Lift
Panel.
b. Surface Fit Option: When plotting a curve with the surface projector ON, turn ON the
Surface Fit Option. When plotting a curve with the surface projector OFF, turn OFF
the Surface Fit Option. After a curve is plotted, the Surface Fit Option cannot be
turned ON or OFF.
5. Moving the yellow fit trace line to the left increases the lift and to the right decreases the lift.
The vertical arrow indicators on the panel will indicate this. When the current surface lift
value given by the yellow fit trace line is greater than zero, the left arrow Indicator (2) turns
red. When less than zero, the right arrow Indicator (3) turns red. When zero, neither arrow
Indicator (2 - 3) turns red. The value displayed on the Lift Slider will match the magnitude
of the yellow fit trace line at the bottom of the panel (current footage).
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