![background image](http://html1.mh-extra.com/html/illunis/rmv-11002/rmv-11002_operation-manual_2044107129.webp)
RMV Operations Manual Revision Copyright illunis LLC, 2014
Page 129
FAQ# 12:
Why does H binning not shrink the line size?
The Horizontal binning modes require the use of the Data Valid (DVAL) signal on the Camera
Link bus. Some capture cards require you to explicitly turn on the DVAL feature. I addition some cards
require you to set the DVAL polarity and activation status (i.e. if DVAL is applied on a pixel or frame ba-
sis). Activating the DVAL signal will then result in the correct H line size.
FAQ# 13:
How do I calculate Well depth ?
The well depth for a given sensor is list in the sensors data sheet. Maximum Well depth of an
image can be calculated if we know the ADC gain and the number of electrons per micro volt of the sen-
sor output amplifier. For the Kodak sensors we have:
The 12 bit ADC has a 1vpp input with a 2V ADC stage This requires a 6dB gain to match the input to
the ADC. So at 6dB (gain 2X) a 1vpp input gives 1V/(2^12 counts) or 244.14 uV/count.
From calculated gain in dB we get a gain factor:
gain factor = 10 ^ (gaindB/20)
Thus for a KAI-4010 with 16uV/e we get
1 count = (244 x 2 ) / (gain factor * 16) electrons
From the ADC max count we can calculate well depth !
FAQ# 14:
What gains and offsets does the camera have ?
The RMV has several stages of gain and offset that are applied to the image data.
1) PxGA: 4dB ± 6dB. Analog gain applied to each of the four Bayer pattern colors.
Red, Red-Green, Blue, Blue-Green. Applied for each tap independently.
2) VGA: 2dB to 36dB: Analog gain applied to all pixels for each tap.
CLAMP: 0 to 255 applied as analog offset per line in DN increments.
3) Digital Gain 1/4095 to 16X in 1/4096 steps for each tap.
Digital Offset: -4095 to 4095 in DN increments.
4) Flat Field Gain: 0.5X to 1.5X in 1/1024 steps for each pixel independently.
Flat Field Offset: -126 to 126 in DN increments for each pixel.
Sensor
Saturation Signal
Sensitivity
Pixel Size
KAI-340
7.4µm x 7.4µm
40,000e
31 µV/e
KAI-2001
40,000e
16 µV/e
7.4µm x 7.4µm
KAI-2020
7.4µm x 7.4µm
40,000e
31 µV/e
KAI-2093
40,000e
14 µV/e
7.4µm x 7.4µm
KAI-4010
40,000e
16 µV/e
7.4µm x 7.4µm
KAI-4020
40,000e
31 µV/e
7.4µm x 7.4µm
KAI-11000
60,000e
13 µV/e
9.0µm x 9.0µm
KAI-16000
7.4µm x 7.4µm
40,000e
30 µV/e