Nikon Super CoolScan 9000ED Repair Manual page 69

6. Image quality performance 2
・Negative film reproducible density range
Under conditions of CMS off, γ=1, and 16 bits, output images should be scanned within the range from
the min. value is (0) to max. value (65535) of RGB.
・Gradation sequence
The film with up to 4.2 density should be scanned accurately within ±0.1 of the difference between the
output density and ideal density.
Indistinctive tone jump
・Density expressible range:
4.2 or more
・Prescan reproducibility
The color variation of 24-patch Lab should be ΔE4 or less. (Reference value: average of 5-times
scanning)
・Drift
Just after power is applied and after operation lasts 30 minutes, the color difference ΔE of the scanned
image of the same chart should be 5 or less on average and 10 or less at a maximum. The shading
standard should be met.
・Streaking
No streaks in both main- and sub-scanning directions.
Not as distinctive as LS-8000
・Grain roughness
Indistinctive. No significant difference from the traditional models.
・Irregular color
Color difference (ΔE) should be 5 or less.
・Influence of outside light
No influence
7. Operating sounds
No significant abnormal sounds with 55-dB or less at a 1-m distance away.
8. Status indication
0.635Hz ± 1% of blinking frequency
BUSY:
5Hz ± 1% of blinking frequency
ERROR:
- R4 ･ -
LS-9000
VRA51701-R.3607.A