Instruction manual

CHAPTER FOUR
4-2
5. Enter the correct Cal Hi value for Ortho (as marked on the step
tablet) by pressing and holding dc (
ZERO) down and using the
d (
FUNCTION) key to decrease value or the c (COLOR) key to
increase value. Then release both keys.
6. Depress [
COLOR] key to select Ultraviolet cal value. Cal Hi value
is displayed for Ultraviolet. (If value is correct skip to Step 8.)
7. Enter the correct Cal Hi value for Ultraviolet (as marked on the step
tablet) by depressing and holding dc (
ZERO) down and using the
d (
FUNCTION) key to decrease value or the c (COLOR) key to
increase value. Then release both keys.
8. Depress [
COLOR] key.
9. Remove all film from table and take measurement. "Cal LO" value
is displayed during measurement.
10. Release Read button.
11. Take measurement of Cal Step on the Step tablet. "CAL HI" value
is displayed during measurement. Display automatically returns
back to "DEN" upon release of the Read button.
Dot Area Calibration Procedure
NOTE: This calibration procedure only pertains to units with
software date code 8718 and greater. The dot area calibration
will allow for more accurate dot area measurements. When
calibrating dot area it is important that a dot reference with a
true 50% dot area (i.e. UGRA Plate Control Wedge, RIT
Microline Resolution Target, etc.) is used for proper calibration.
Shown below is the procedure for Dot Area calibration. Density
calibration needs to be performed or verified first.
1. Depress [FUNCTION] and [COLOR] keys at the same time until "N
Dcal Y" is displayed.
2. Press [
FUNCTION] to indicate No, you do not want to calibrate
density.
3. Press [
ZERO] to indicate Yes, you want to calibrate dot area.
4. Press [
COLOR] key to select color (ortho or ultraviolet).
5. Measure base area on the film. After releasing Read button, "READ
50%" is displayed.
6. Measure 50% dot on the film. After releasing Read button, display
returns to normal +Dot operation.