service information for eeprom ic setting - Jordans Manuals
service information for eeprom ic setting - Jordans Manuals
service information for eeprom ic setting - Jordans Manuals
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To make recordings, it is necessary to modulate the write pulse, wh<strong>ic</strong>h is called “Write Strategy”.<br />
There can be many types in Write Strategy. Typ<strong>ic</strong>ally Write Strategy <strong>for</strong> DVD ±R has NMP(Non Multi-Pulse) type and<br />
MP(Multi-Pulse) type. In NMP type each single mark is created by subsequent separated short pulses. In MP type each<br />
single mark is created by one continuous pulse.<br />
Write Strategy <strong>for</strong> DVD ±RW has Type 1 and Type2. In Type 1 the mark with nT width is created by one top pulse and (n-2)<br />
multi-pulses. Thus mark 3T is made by one top pulse and one multi-pulse. In Type 2 the mark with nT width is created by<br />
one top pulse and (n-3) multi-pulses. Thus mark 3T is made by one top pulse only.<br />
RL-02A uses MP type Write Strategy <strong>for</strong> DVD ±R and Type 1 <strong>for</strong> DVD ±RW as shown below.<br />
Recording data Twd ( 8T )<br />
Twd (3T )<br />
Write pulse<br />
<strong>for</strong> DVD R<br />
Po<br />
Ttop<br />
Tmp<br />
Ttop<br />
Zero Level<br />
Pb<br />
Write pulse<br />
<strong>for</strong> DVD RW<br />
Ttop<br />
Tmp<br />
Ttop<br />
Tmp<br />
Pe<br />
Po<br />
Tcl<br />
Tcl<br />
Zero Level<br />
Pb<br />
Po :Write Power (Peak Power)<br />
Pe :Erase Power<br />
Pb :Bias Power<br />
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