March 14, 2005
Note:
When connected to a serial port, choose "X-Rite Dtp-41 / 41T Colorimeter" from the densitometers list.
When connected to the USB port, choose "X-Rite Dtp-41B (USB)" from the densitometers list.
Notes on the USB interface for the Dtp-41B
The Setup screen is used to select the port and data type for your device. Note that both the reflective (paper) and transmissive (film) modes are selectable for these devices. Please note that in order to use the transmissive setting you will need to have a DTP-41T model, which is a different device than the standard DTP-41.
The Calibrate button initiates the calibration sequence for the DTP-41 / DTP-41T. If you have a 41T model, choose the Film radio button when you calibrate the transmissive unit. It is not necessary to calibrate the device using this button, it merely provides a convenient way to do so. Calibration is not necessary to begin reading values; however, the accuracy of these measurements can be greatly affected by a mis-calibrated device. To proceed to the next step, click on the Next button.
The Process Test Strips screen begins the strip reading process. To begin reading a strip, click on the button associated with the color you wish to read. Then follow the instructions presented in the message box directly below the Read Black Strip button. This interface is "hard-wired" to except the 17 data points used in the 'dtp41.ps' file located in your 'X:\PSFiles' folder (X: being the letter of the drive on which Wasatch SoftRIP was installed). This is the only test pattern that will give you a correct result.
After the densitometer has returned the strip values, the Done will appear next to the color that you selected. After any one strip has been read, the Next button will change to Finish. You may select Finish after reading any number of the four strips; the system will only apply curves from colors you have measured. Colors that you did not measure will not be overwritten should curves already exist.
USB interface notes: