Electro-Optical Characteristics

The tabled values are measured at 25º C

Parameter

Symbol

Typical

Units

Note

Number of photo detectors

1728

elements

Pixel to pixel spacing

125

m

m

Tint

347

m

sec

@ 5.0 MHz clock frequency

fclk

5.0

MHz

Vpavg

1.1 +/- 0.1

Volts

Up

<|+/-30|

%

Uadj

<25

%

Ud

<75

mV

Vd

<200

mV

MTF

>40

%

Table 4. Electro-Optical Characteristics at 25° C

Notes.

1. Tint is the line scanning rate or integration time. Tint is determined by the interval of two start

pulses, SP. The integration time of 347msec is set at the factory. For additional comments, see note

(1) under Table 5, Recommended Operating Conditions.

2. fclk: main clock frequency.

3. Vpavg = å Vp(n)/1728.

4. Up = [(Vpmax - Vpavg) / Vpavg] x 100% or [(Vpavg - Vpmin) / Vpavg] x 100%,

Where Vpmax = maximum pixel amplitude in the line scan and Vpmin = minimum pixel amplitude in

the line scan.

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

line scan.

6. Ud = Vdmax – Vdmin.

Vd = the average dark output level.

Vdmin is the minimum output voltage on a black document (LED is turned off).

Vdmax is the maximum output voltage on a black document (LED is turned off).

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

Vmax: maximum output voltage at 50 lp/in and Vmin: minimum output voltage at 50 lp/in,

PAGE 4 OF 7 - PI207MC-A4, 11/11/03

where lp/in is the line pairs per inch.