5-15-1
5 Range
Functions
Reference Value ...................... 5-1
Absolute Range Measurement.. 5-2
Range Minus Reference
Measurement ..................... 5-2
The Range function subtracts the lowest measurement from the
highest and displays the difference.
Range = D
max
– D
min
where D
max
= Maximum (highest) density
and D
min
= Minimum (lowest) density
The Range function can have a reference value (if selected)
subtracted form the measurement, giving you a difference value.
Before the Range can be calculated, a reference value needs to be
selected. You can display a previous value or enter a new step
reference. Absolute Range takes a true reading of the sample—
including the paper or reference. Range Minus Reference takes into
account the effect of the paper or reference and calculates only the
ink density.
DISPLAY/ENTER A REFERENCE VALUE
There are two ways to display the reference value: at menu level or
when data is displayed after entering a –REF function. To enter a
reference value, a Step Reference must be performed.
To display the reference value:
Ÿ At menu level (e.g. when RANGE –R is displayed) hold ZERO
depressed until the reference value appears.
Ÿ Once the reference value is displayed, Reference can be entered
by numerically entering the reference value using the ZERO
