AVIIVA® EM2-EM4
33
1013D - AVIIVA EM2/EM4 02/11
e2v semiconductors SAS 2011
OUT
CCD
X
Preamp
Gain
+
X
Tap Balance
Offset Gain
X
Amp
Gain
+
X
FFC
Offset Gain
X
FFC
Adjust
+
X
LUT or
Contrast Exp
.
Offset Gain
Action on whole line
Action per pixel
Action per sensor’s Tap
The Global Chain of Gain is described as following :
5.3.6.1
Analog Gain
•
Preamp Gain
: (
GainAbs
with
GainSelector
=
AnalogAll
)
Set the Pre-amplification Gain
.
This command is available in the CommCam “Gain & Offset” section. The
Preamp Gain is set by step of 6dB :
Read function : “
r pamp
”;
Returned by the camera : Integer corresponding to one of the 5 different step values :
•
0 : (-24dB)
•
1 : (-18dB)
•
2 : (-12dB)
•
3 : (-6dB)
•
4 : (0dB)
Write function : “
w pamp
” <int> ;
•
Gain
:
(
GainAbs
with
GainSelector
=
GainAll
)
Set the Amplification Gain
.
This command is available in the CommCam “Gain & Offset” section :
Read function : “
r gain
”;
Returned by the camera : Value from 0 to 6193 corresponding to a Gain range of 0dB to +8dB
calculated as following : Gain(dB) = 20.log(1+ Gain/4096).
Write function : “
w gain
” <int> ;