Mikrotron MC132x Spezifikationen PDF herunterladen (Seite 16)

Configuration MC132x Users Manual Rev. 0.22

6.3.3 Load factory profile

The eight factory profiles can be read but not changed by the user.

Command: :f<n> <n> = 0 ... 7

6.4 Image quality

There are three D/A converter to influence image quality: FPN, Gain, and Black up. FPN, Gain and

especially Black might be adjusted if sensor clock changes. All three parameters are stored in non-

volatile memory as part of the selected profile.

6.4.1 FPN

The Fixed Pattern Noise setting reduces the fixed pattern noise that is typical to CMOS sensors. This

level might be changed if the sensor clock frequency is changed. For adjustment set the lens out of fo-

cus and to a medium grey level. Lower FPN until a heavy pattern appears. Then raise by a few points.

Command: :a1<x

> : Range, typ. 55h ... 80h

Response: none

6.4.2 Gain

This is the threshold for the A/D converters. Its standard value is 66h for app. 1V. One step is app.

10mV. To increase the gain the value of a2 must be lowered.

Command: :a2<x

> : Range,

typ. 30h ... 80h

6.4.3 Black Level

Change Black Level if sensor clock changes. Increase this parameter until grey values in no light condi-

tion (closed lens) are close to zero.

Command: :a5<x

> <x

>: Range, typ. 00h ...ffh

Response: none

6.5 Image size and position

Image size and position within the sensor is defined by four parameters:

Bit(s) Description

r1[9..0] Number of first line, 0..3FD

r3[9..0] Number of lines, 0..3FF

r4[6..0] Address/10 of the first pixel

r5[6..0] Address/10 of the last pixel

Table 6.5-1

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 44 45

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Mikrotron MC132x Spezifikationen Seite 16