PCS

DCA's PCS (Pulse Control System) module allows facilities to control pit geometry of the glass master at the Laser Beam Recorder when using DCA's MIS signal processor. Plants can also make duty cycle adjustments on leading and trailing edge timing, thereby adjusting individual pit lengths on the glass master. Adjustment in laser beam intensity can control the width of the pits, widening short run length pits or narrowing long run length pits to reduce the probability of cross talk.

There are three types of Pulse Control available with DCA MIS products.

PCS-2 has the following features:

• Pit Geometry can be adjusted at all encoder supported speeds,
• No re-cabling required from standard encoder,
• Alter leading edge, trailing edge and pulse intensity (amplitude) of individual pits or pit/land pairs as a global or individual setting,
• Leading edge and Trailing edge delay adjustment: 1/16 of a channel bit period increments (in positive or negative direction),
• Pit amplitude adjustment: minimum amplitude value of 0 Volts; maximum amplitude value of 4.0 Volts,
• Greater control over the Land run length and Pit run length adjustment than in DCA's original PCS,
• PCS-2 Pit Geometry Editor simplifies setting the desired adjustments.

In addition to all the PCS 2 features, PCS 2e (offered in MIS 8.5) has a maximum resolution of 1/128 T channel bit edge adjustments.

PCS-3 has the following features:

DCA's PCS-3 (Pulse Control System) allows you to modify pit geometry on a land-pit-land basis while mastering. Not only can operators create complex waveforms necessary for blue-laser masters prior to the cut, but facilities can also use PCS-3 to create step-band masters and modify the write strategy during the cut, to attain the highest degree of calibration possible.

Contact us to learn more about PCS.