OHAUS TROOPER SCALE, Service Manual

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4-4
CHAPTER 4 MAINTENANCE PROCEDURES
4.2.4.3 How to Enter an Individual Menu
A short press on the G/N/T
MENU button = YES and you can enter a specific menu.
4.2.4.4 How to Enter an Individual Menu Item
When in any menu, a short press on the G/N/T
MENU button = YES and you can enter a specific menu
item. To advance through a given menu, make short presses on the PRINT UNITS =NO button.
4.2.4.5 How to Save and Store an individual menu item
When a menu item has been changed once the desired selection is shown, make a short press on
G/N/T MENU button, Quit appears on the display. If NO is selected by pressing the PRINT UNITS
button, the next menu item appears. If yes is selected by pressing G/N/T MENU, StorE? appears.
Pressing the G/N/T MENU button will store the change and return the scale to a weighing mode. If NO
is selected, the menu change is ignored and the scale is returned to weighing mode.
4.2.4.6 How to Quit the Menus
A short press on the PRINT UNITS button = NO. When in MENU MODE, short presses will advance
through the menus until QUIT is reached. To quit, make a short press on the G/N/T MENU button, StorE?
appears, answer YES to save changes and the scale returns to the weighing mode, or NO to ignore
changes and return to the weighing mode.
4.2.5 Calibration
4..2.4 Trooper Scale Menu Operation (Cont.)
Span calibration ensures that the Scale reads correctly within specifications. For best results,
calibrate at full capacity. Calibration unit can be set to either kg or lb.
NOTE: When the Scale is used in Legal for trade applications, the calibration menu is locked
out and is not accessable. This is to prevent unauthorized personnel from changing calibration.
IMPORTANT:
Before beginning calibration, make sure masses are available. If you begin calibration and
realize calibration masses are not available, exit the menu. The Scale will retain previously
stored calibration data. Calibration should be performed as necessary to ensure accurate weighing.
You have a choice of either span or linearity calibration. Span calibration checks zero and full span
calibration points. Linearity calibration checks zero, mid span and full span points.
Before calibrating the scale, first determine if a recalibration is really needed. Place the available
calibration masses onto the platform. As each mass is added, the scale display should show the
correct weight to /- 1 scale division. If the scale is within the tolerance, there is no need to
recalibrate the scale.
If it is determined that the scale must be recalibrated do not continue until you are certain that you
have suitable calibration masses.
If calibration masses are available you must select the correct calibration units (pound masses or
kilogram masses) before calibrating the scale. The desired unit can be chosen in the setup menu.
After the desired calibration unit has been chosen, advance to the LOCSW menu to turn the
calibration lock switch off. This software lock is in place to prevent accidental calibration.