Description:

Enable or disable the PLL tracking.

This command should not be used when actual plotting is taking place. This command is very useful to determine if the PLL will lock to the spinning drum while imaging. The advantage to using the command "plot on" is you don't have to image (and waste) media to test the PLL tracking.

To test the PLL tracking, do the following:

1. With a plate on the drum, type the command "drum spin"
2. After the command "drum spin" command completes, type the command "plot on".
3. Monitor the pattern of the PLL lamps on the MPE. If tracking is normal, the centre two lamps are lit most of the time, and as the drum rotation changes, these lamps oscillate with the drum between the 10 lamps to show how well the PLL is tracking. If all the lamps stop changing and only one is lit, that is an indication that the PLL was lost.
4. To disable the PLL tracking, type the command "plot off".

Applies To:

• All

Syntax:

Notes:

See Also:

• Command: plot