Gestetner B003 Service Manual page 227

SP4 Mode Number
4903* 34* MTF Filter Strength: Text
257%~400%
35* MTF Filter Strength: Text
257%~400%
36* MTF Filter in Photo Mode
37* Smoothing Filter in Photo
Mode
38* Filter Strength: Photo Mode
Filter Level: Text/Photo
39*
25%~64%
40* MTF Filter Level:
Text/Photo 25%~64%
41* Filter Strength: Text/Photo
25%~64%
SM
SERVICE PROGRAM MODE
Function and [Setting]
Selects the MTF filter strength for the main scan
direction in the text mode.
[0~7 / 2 / 1 step]
Selects the MTF filter strength for the sub scan
direction in the text mode.
[0~7 / 2 / 1 step]
Selects the MTF filter coefficient for the main
scan direction in the photo mode. Use this
setting to eliminate moiré from continuous
grayscale images and sharpen images.
[0~6 / 0 / 1]
This item is enabled only after 0 has been
selected for SP-4-903-009 to switch on MTF
correction.
Selects the filter coefficient for smoothing in the
photo mode. The higher the number you select,
the greater the applied smoothing effect.
[0~7 / 2 / 1]
This item is enabled only after 1 has been
selected for SP-4-903-009 to switch on
smoothing.
Selects the MTF filter strength for the sub scan
direction in the photo mode. Select a higher
number for stronger application of the filter.
[0~7 / 1 / 1 step]
0: 1/32x 2: 1/8x
1: 1/16x 3: 1/4x
Selects the MTF filter coefficient in the main
scan direction in the text/photo mode. Select a
higher number for stronger application of the
filter. However, increasing the value could
increase the incidence of moiré.
[0~15 / 9 / 1 step]
Selects the MTF filter coefficient in the sub scan
direction in the text/photo mode. Select a higher
number for stronger application of the filter.
However, increasing the value could increase
the incidence of moiré.
[0~13 / 10 / 1 step]
Selects the MTF filter strength in the main scan
direction in the text/photo mode. Select a higher
number for stronger application of the filter.
However, increasing the value could increase
the incidence of moiré.
[0~7 / 1 / 1 step]
0: 1/32x 1: 1/16x
4: 1/2x 5: 1x
5-21
4: 1/2x 6: 2x
5: 1x 7: 4x
2: 1/8x 3: 1/4x
6: 2x 7: 4x
B003/B004/B006/B007