Xerox CX240 User Manual page 125

Calibrating with the X-Rite DTP34 QuickCal Densitometer 115
Calibrating the X-Rite DTP34 QuickCal Densitometer
Frequency of Calibration
Your X-Rite DTP34 QuickCal densitometer should have a quick
calibration at least once a day. A full calibration should be performed
annually, during heavy usage to provide accurate measurements, or if the
quick calibration consistently fails. Typically, the host computer prompts
for an instrument calibration (amber LED) when required, but the process
can be invoked manually at any time. See the following procedure for
information about the calibration process.
Positioning the Instrument on the Calibration Reference
Handle the reflection reference by the edges. Make sure that the reflection
reference is free of dust, dirt, and smudge marks. To obtain the most
accurate calibration, hold the instrument with consistent and nominal
pressure during the calibration process.
Position the instrument on the designated location of the reflection
reference (indicated by a dotted outline of the instrument). Do not move
the instrument more than 0.25" (6.35mm) before reading the strip.
AXXXXXXXX-XXXXX D: XXX
DTP34-100 #:
STATUS X C= .XX M= .XX Y= .XX
X-Rite
R
Reflection Reference