(5) Upadj = MAX[ | (Vp(n) - Vp(n+l) | / Vp(n)] x 100%

Upadj is the nonuniformity percentage pixel to pixel

(6) Ud = Vdmax - Vdmin

Vdmin is the minimum output on a black document(O.D.=0.8)

Vdmax: maximum output voltage of black document (O.D.= 0.8)

(7) MTF = [(Vmax - Vmin) / (Vmax + Vmin)] x 100 [%]

Vmax: maximum output voltage at 4.0 lp/mm

Vmin: minimum output voltage at 4.0 lp/mm

(8) lp / mm: line pair per mm

(9) O.D. Optical Density

Switching Characteristics (25

Note: See timing symbol definitions in the following table.

Symbol Definitions for the Above Timing Diagram

Item

Symbol

Min.

Typical

Max.

Units

Clock cycle time

to

1.0

4.0

µs

Clock pulse width

tw

250

ns

Clock duty cycle

25

75

%

Prohibit crossing time of

Start Pulse

tprh

15

ns

Data setup time

tds

20

ns

Data hold time

tdh

20

ns

Signal delay time

tdl

50

ns

Signal settling time

tsh

350

ns

MODULE TIMING DIAGRAM

CP

SP

Vout

tdl

tds

to

tw

tdh

tprh

tsh

PAGE 4 OF 6 PI201M-A4, 7/17/99