MARK IV HD J2 TAMPER OPERATION PAGE 2.1 - 53
BULLETIN 5082505 CONTROLS REVISED 10 - 2020
2.1
2.1.11 Operator Keypad Controls - Right - See Figure 2.1-35
(C) Cursor Key Group - Outlined in GREEN
The Cursor Keys are used for two different purposes. Normally these keys control manual
adjustments to lift, line and super elevation. Manual corrections of this type are typically additive
to any automated ramping or "best fit" control of the corresponding graph so the operator
remains in complete control at all times.
These keys are also extensively used for selecting and dragging best fit and ramp lines which
are described in further detail in the Jupiter II Operation and General Operation Sections of this
Manual. For now, only the operation of these keys during normal tamping will be discussed.
(12) Arrow Up Key
(13) Arrow Down Key
Each time an Arrow Up or Arrow Down Key is pressed, the lift at the shadowboard will be
changed by 1/32 inch in the appropriate direction. How this change is displayed on the screen
will depend on the manner in which surface is being applied.
a. When the machine is automatically controlling surface according to an established
plan for lift, the change will be shown on the left slider of the Lift Panel.
b. When the machine is not working according to an established plan for lift, the change
will be seen in the right slider of the Lift Panel and in the numerical display just below
the Lift Panel.
(14) Arrow Left Key
(15) Arrow Right Key
Each time an Arrow Left or Arrow Right Key is pressed, the throws at the shadowboard will be
changed by 1/16 inch in the appropriate direction. The change will be seen in the numerical
display at the bottom of the Throws Graph Panel.
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