Transmittance Calibration; Calibration Procedure - Datacolor 650 User Manual

Transmittance Calibration

The following accessories are used to calibrate the instrument for transmittance:
Barium-coated MAV Aperture Plate

Calibration Procedure

Before you begin, you should verify the current aperture selection. The setting must be
Medium Area View (MAV) and the barium-coated MAV plate should be placed at the
instrument port.
NOTE
Transmission calibration and measurements must be made using the barium-coated
Medium Area View (MAV) aperture plate.
To calibrate the instrument for transmittance measurements, do the following:
1. Place the barium-coated MAV aperture plate at the port.
2. Open the transmission compartment and make sure the optical path between the
3. Access the calibration procedure in the program you are running. You may need
4. When you are prompted by the program, block the lens using the black card:
Datacolor 650/600/400 User's Guide
sphere and the lens is clear.
to change the selections for the aperture plate, and measurement mode
(transmission). See also the User's Guide for the program you are running for
detailed instructions to access the instrument setup and calibration options.
White Spectralon® Plaque.
Typically placed at the
sample port for calibration
and measurement.
Black Card. Used to "block"
the lens during calibration.
Accessing the Transmission Compartment • 31