Long Name:

Applies to:

Description:

The distance between the carriage home tab and the center of the plate, used to calculate the approximate position of a plate's edge. This parameter is normally calibrated for all platesetters during factory integration. It may also need adjusting after maintenance to cassette bays or head replacement.

Type:

Default:

• 580 (Platesetter_3244, Trendsetter_400/800)
• 1050 (Platesetter_VLF, Trendsetter_VLF)

Range:

• 0 to 65535 [mm]

Notes:

The following calibration procedure for cph only applies to Trendsetter 3244 with Spectrum option:

1. Obtain a 4Up carrier that is in good condition.
2. Type "proof mode". Make sure the commands indicate that the drum is empty. Also, confirm that the drum is empty visually. If it is not empty, unload whatever is on the drum.
3. Load the 4Up carrier by typing "pload c 1".
4. Type "set verbose all 1".
5. Type "set carriage cph XXX" where XXX is a value between 570 and 590. Use XXX = 575 for the first time. If changes are needed, use XXX +/- 2 for the next iteration.
6. Type "proof c_verify mode". If the command is done successfully, CPH should be set to YYY mm. will be displayed. Write down the YYY value and go to the next step. If the command failed with "Carrier verification drum vacuum check FAILED!!!", type "c" to clear from the error followed by "proof mode c 1" then type "punload c" and "pload c 1" to reload the carrier and start from step 5 again. If the command failed with "Carrier verification FAILED!!! No punch hole found!!!", type "c" to clear from the error followed by "proof mode c 1" then go back to step 5 and use a different cph value. If the "Carrier verification FAILED!!! No punch hole found!!!" occurs no matter which cph value you put in, drum epos may not be setup correctly. Type c to clear from the error followed by proof mode c 1 then type punload c to unload the carrier. Once the drum is empty, set the epos parameter such that the focus laser is centred in the lower half of the edge detect strip then re-start from step 1.
7. Type "set carriage cph YYY" where YYY is the value obtained from the previous step. Make sure that YYY is between 570 and 590mm. Re-do step 6 to verify the carrier again. If no error, go to next step
8. Type nvs save carriage to save your changes if all goes well.

Partition:

See Also: