Set-Up
Newall Measurement Systems
8
3.3 Direction
The direction option allows you to change the direction of travel of each axis. For example, if after installation
the X axis is measuring positive from right to left, you can use this option to change the direction of the X
axis so it measures positive from left to right.
In the Set-Up routine, press the
[
∧
]
until "
DIR
" (direction) is displayed.
Each axis display will show "
0
" or "
1
"
Pressing each axis key
[ Xo ] [ Yo ]
or
[ Zo ]
reverses the counting direction. When the unit is displaying
the choices you wish to use, press
[
∧
]
to continue to next option.
3.4 Radius/Diameter
This option allows you to select any axis to display measurements at a two times (x2) factor. This is used on
lathes and other turning applications to display part diameter rather than part radius.
In the Set-Up routine, press the
[
∧
]
key until "
RAD
" or "
DIA
" is displayed.
Pressing each axis key
[ Xo ]
,
[ Yo ]
or
[ Zo ]
, switches between radius and diameter readings for that axis.
When the unit is displaying the choices you wish to use, press
[
∧
]
to continue to the next option.
3.5 Linear Error Compensation
This option allows you to apply a constant correction factor to all measurements displayed. This factor is
expressed in parts per million (PPM).
In the Set-Up routine, press the
[
∧
]
key until LC (Linear Compensation) is displayed. The display will show
"
LC 0
" or the last correction factor entered.
To insert, or change, a correction factor, select the axis
[ Xo ] [ Yo ]
or
[ Zo ]
and enter the factor you wish to
use.
The value is entered by pressing the
[
∧
]
and
[
∨
]
keys
.
For example, to apply a factor of 200PPM to the X axis, press the following keys:
[ X ] [
∧
]
until the displays
show 200 then press
[ ent ].
If you make a mistake you can revert to the previous settings by pressing the
[ ce ]
key
.
This cancel
function will not work after the
[ ent ]
key has been pressed.
If the unit is displaying measurements less than the actual measurement, enter a positive factor to
compensate. A factor of 200PPM means displays are measurement x 1.000200. When each axis is
displaying the correction factor you wish to use, press
[
∧
]
to return to the first option.
3.5.1 Calculating Linear Error Compensation
To establish a correction factor, check the measurements displayed by the DPG2000 against a known
distance. The correction factor should be established while in the standard operating mode and not in the
Set-Up routine.
