X-Rite Dtp20 (PULSE)

March 24, 2005

Note: This interface is "hard-wired" to accept the 17 data points specified in the 'dtp20.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.

Notes on the USB interface for the Dtp-20 (PULSE)

The DTP-20 (PULSE) has a memory that can store strips or spot colors. The DTP-20 (PULSE) can make use of two possible work flows to linearize data.

• Use the DTP-20 (PULSE) like all other devices we support
  • Position device over the calibration target on the "Pathfinder"
  • Press the Calibrate button (see setup screen below)
  • Click next and choose which strips to linearize (see Process Test Strips below)
  • Use the "Pathfinder" and scan the Target Identification strip (Top line of sample image below)
  • Click "Read Strips" and follow the screen prompts (always use the Pathfinder when scanning)
• Use the memory of the DTP-20 (PULSE) to scan all the strips
  1. Store strip information into the DTP-20 (PULSE) memory
     • Position device over calibration target and hold button down for three seconds to initiate white calibration.
     • Use the "Pathfinder" and scan the Target Identification Strip (Top line of sample image below)
     • Use the "Pathfinder" and scan each of the desired strips
  2. Read data into SoftRIP
     • Open linearization screen (see setup screen below)
     • Click next to skip calibration and then OK out of the warning screen
     • Select which strip(s) to read from the device
     • Click Read Strips

Setup

The Setup screen is used to calibrate the device if desired. The DTP-20 (PULSE) does not have transmissive capability. The DTP-20 (PULSE) has a USB only connection. Therefore, the selection of the communication port and the selection of Paper or Film is grayed out.

The Calibrate button initiates the calibration sequence for the DTP-20 (PULSE). 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 an un-calibrated device.

• To Calibrate
  • Press the Calibrate button
  • Place the device over the white point on the Pathfinder.
  • Press OK on the information pop up and wait for the calibration to complete

To proceed to the next step, click on the Next button.

Process Test Strips

The Process Test Strips screen begins the strip reading process. To begin reading strips, choose the check boxes associated with the color you wish to read. Click the Read Strips button and then follow the instructions presented in the message box directly above the Read Strips button.

After the densitometer has returned the strip values, the Finish button will be available. Select Finish and the system will only apply curves from colors that were measured and selected in the check boxes mentioned above. Colors that you did not measure will not be overwritten should curves already exist.

Colorimeter notes:

The DTP-20 Pulse can also be used as a colorimeter in SoftRIPs Spot Color Capture. The DTP-20 Pulse has the ability to store multiple spot readings in memory. However, SoftRIPs interface will only read one at a time. Therefore, if there is one or more measurements stored in the devices memory, SoftRIP will only read the last spot color measured. If there is nothing stored in the memory, follow the prompts to read new spots.

USB interface notes:

• Before using this driver, follow the X-Rite instructions and install the USB driver that came with the device
• The first screen shown above will have the com port selection grayed out. This selection is not needed for the USB device
• If there is a problem connecting to the device and all cables / connections appear to be correct.
  • Choose the USB icon in the system tray (lower right by the clock) and choose to safely remove the device. Unplug the USB connection from the computer, wait a few moments and plug it back in. This will solve most communication problems.
  • Look for the existence of XdsIII.dll in the system32 folder and remove it. The system32 folder is in the directory where windows is installed. This file may conflict with the released version used by SoftRIP.