Atmel AKYLA HD 20 LV User manual

Features
•3-CCD Prismatic Color Linescan Camera
•High Sensitivity and High SNR Performance Linear CCD Sensors
•1024 Pixels 10 x 10 µm or 14 x 14 µm
•2048 Pixels 10 x 10 µm
•Excellent CCD Alignment Accuracy
•LVDS Format Data Rate: 20, 25, 33, up to 40 Mpixels/s
•Dynamic Range: 12-bit Channel
•Single Power Supply: 20 to 36 VDC
•Flat Field Correction Included
•Easy Camera Control with Programmable Settings
•Memory for Storing up to 60 Configurations
•High Reliability - CE and FCC Compliant
Description
The AKYLA™is a rugged, high-performance, fully digital color linescan camera for
demanding industrial applications. It consists of a high-accuracy 3-CCD architecture
with a choice of either 1024 or 2048 pixel sensors at speeds up to 40 million pixels per
second and per color channel. The AKYLA cameras are optimized for high sensitivity
and precise color recognition.
Applications
• Web Inspection
• Inspection of Natural Materials like Food, Wood, Ore, Minerals and Lumber
• Recycling
• Quality Control in Printing Processes
• Texture Recognition
LVDS
3-CCD Color
Linescan
Camera
AKYLA™
HD 20/25/33/40
1010/1014/2010 LV

2
5334C–IMAGE–06/05
AKYLA HD 20/25/33/40 LV
1. Precautions
1.1 Manual
Read the manual carefully before using the camera for the first time.
1.2 Camera Handling
The camera is a sensitive optical device, handle with care at all times. Do not drop the camera
and avoid mechanical shock to the camera.
1.3 Foreign Matters
Do not spill liquids on the camera. The camera is not waterproof.
Do not drop metallic objects into the camera. Doing so may cause a short-circuit and damage
the camera.
1.4 Cleaning
Keep the shade cap on the camera head when it is not in use to avoid contaminating the prism.
If the front surface of the prism is very dirty, we recommend the camera be serviced by Atmel,
since the surface area of the prism cannot be fully accessed from the front.
If there are small amounts of contaminants or dust on the prism surface, use a clean lint-free
cotton swab or other non-abrasive medium dipped in acetone or pure alcohol to clean its sur-
face. Shake excess solvent off before touching the prism surface to avoid streaking. Atmel is not
responsible for scratches or damage inflicted by the customer to the front surface of the prism.
To clean the camera’s exterior casing, use a soft, dry cloth. In case of severe stains, use a small
amount of pure alcohol or isopropyl alcohol. Do not use acetone or other volatile solvents such
as benzene or thinners.
1.5 Servicing
Do not open the camera. The camera’s warranty expires immediately upon opening. Only autho-
rized service personnel may open the camera.
1.6 Ventilation
Allow sufficient air circulation around the camera. If this condition is not met, the camera may
shut down during operation; it is designed to do so to prevent damage to the optical assemblies.
Further increase of temperature may damage the camera.
1.7 Storage
Do not store the camera at a temperature over 55°C. There is a permanent temperature indica-
tor inside the camera, which is installed to ensure that if the camera is damaged due to over-
heating, the warranty of the camera becomes void.
1.8 Electromagnetic Fields
Do not operate the camera in the vicinity of strong electromagnetic fields (above the require-
ments of CE conformity). This may cause erroneous operation of the camera.

3
5334C–IMAGE–06/05
AKYLA HD 20/25/33/40 LV
1.9 Transportation
Transport the camera in its original packaging. If the original packaging has been discarded,
package the camera with care in a thick layer of soft, preferably anti-static material. Do not use
material that may cause the camera to fall to the bottom of the package while transporting. Do
not transport with the optics attached.
2. Camera Characteristics Overview
Note: 1. LSB in 12-bit mode
2. Measured front face temperature
Table 2-1. Camera Characteristics Overview
Parameter Value Unit
Sensor Characteristics at Maximum Pixel Rate
Data rate 20 MHz 25 MHz 33 MHz 40 MHz MHz
Resolution 1024 2048 1024 2048 1024 2048 1024 2048 Pixels
Max line rate 17.8 9.3 22 11.5 27.3 14.1 34.4 18.3 kHz
Anti-blooming x 100 –
Radiometric Characteristics
Dynamic range 8 - 12 Bit
Spectral range 400 - 700 nm
Non-linearity < 0.1 %
Typical gain range Gmin
0
Gmax
30 dB
Saturation equivalent exposure
Red
Green
Blue
10 µm pitch
96
120
151
14 µm pitch
38
48
61
10 µm pitch
240
130
100
14 µm pitch
1.2
1.5
4.8
(1)
LSB/(nJ/cm2)
LSB/(nJ/cm2)
LSB/(nJ/cm2)
S/N 69 42 dB
Mechanical and Electrical Interface
Size (w x h x l) 115 x 106 x 122 mm
Lens mount F –
Sensor alignment <0. 2 max, 0.1 typical Pixel
Power supply DC, single 20 to 36 V
Power dissipation < 26 W
Operating temperature 5 to 40 (non-condensing) cooling is required for 33 and 40 MHz camera °C
Storage temperature -10 to 55 (non-condensing) °C

4
5334C–IMAGE–06/05
AKYLA HD 20/25/33/40 LV
3. Technical Specifications
Notes: 1. Measured front face temperature.
2. For 33.3 MHz and 40 MHz cameras, additional cooling is required when the ambient temperature is above 20°C.
3. Within 5 to 95% of the saturation exposure. Equals ±4 LSB on a 10-bit scale when gains are above 300.
Table 3-1. Technical Specifications of the AKYLA HD Series of Cameras with 10 µm Sensors
Parameter Symbol Min Typical Max Unit Notes
Number of pixels N
N–1024 2048 –––
Pixel size – – 10 x 10 – µm 100% fill factor
Data rate per CCD – – – 40 MHz –
Gain control G – 100x – – Response time: 500 ms max.
A/D conversions – – 12 – bit –
Supply voltage Vsupp 20 24 36 VDC
Ripple: ±10%, voltage + ripple must
stay within 20 to 36 V
Power consumption – – 12 to 17 26 W –
Weight m – 1.3 – kg Without lens
Operating temperature Top 5–40 °C 41 to 104°F (1)(2)
Storage temperature Tst -10 – 55 °C 14 to 131°F
Humidity, operation – 5 – 85 % Relative, non-condensing
Humidity, storage – 5 – 95 % Relative, non-condensing
Linearity – – 99.6 – % (3)
Photo response non-
uniformity, pixel-to-pixel PRNU – ±2 ±10 % –
Saturation level – – 4095 4095 DU Digital units
Table 3-2. Technical Specifications of the AKYLA HD Series of Cameras with 14 µm Sensors
Parameter Symbol Min Typical Max Unit Notes
Number of pixels N – 1024 – – –
Pixel size – – 14 x 14 – µm 100% fill factor
Data rate per CCD – – – 40 MHz –
Gain control G 12x 100x – – Response time: 500 ms max
A/D conversions – – 12 – bit –
Supply voltage Vsupp 20 24 36 VDC
Ripple: ±10%, voltage + ripple must
stay within 20 to 36 V
Power consumption – – 12 to 17 26 W –
Weight m – 1.3 – kg Without lens
Operating temperature Top 5–35 °C 41 to 95°F(2)
Storage temperature Tst -10 – 55 °C 14 to 131°F

5
5334C–IMAGE–06/05
AKYLA HD 20/25/33/40 LV
Notes: 1. Measured front face temperature
2. For 33.3 MHz and 40 MHz cameras, additional cooling is required when the ambient temperature is above 20°C.
3. Within 5 to 95% of the saturation exposure. Equals ±4 LSB on a 10-bit scale when gains are above 300
4. Conformity
4.1 Standard
The cameras have been tested using the following equipment:
• Shielded power supply cable
• CameraLink®data transfer cable ref. 14B26-SZLB-500-OLC (3M)
• Linear AC-DC power supply
Atmel recommends using the same configuration to ensure compliance with the following
standards.
4.2 European
AKYLA cameras comply with the requirements of the European directive 89/336/EEC, EMC
(Electromagnetic Compatibility) . We herewith declare that this product complies with the follow-
ing provisions.
• Emission CISPR 22 (1997)
• Immunity IEC 61000-6-2 (1999)
5. Camera Overview
5.1 Color Separation
The incoming light is separated into three (Red, Green and Blue) color images by an RGB beam
splitter (Figure 5-1). The spectral distribution of each color is standardized and well-known. By
attaching a CCD to each of these color outputs, it is possible to measure the intensity of each
color image.
Humidity, operation – 5 – 85 % Relative, non-condensing
Humidity, storage – 5 – 95 % Relative, non-condensing
Linearity – – 99.6 – % (3)
Photo response non-
uniformity, pixel-to-pixel PRNU – ±2 ±10 % –
Saturation level – – 4095 4095 DU Digital units
Table 3-2. Technical Specifications of the AKYLA HD Series of Cameras with 14 µm Sensors (Continued)
Parameter Symbol Min Typical Max Unit Notes

6
5334C–IMAGE–06/05
AKYLA HD 20/25/33/40 LV
Figure 5-1. RGB Color Separation Beam Splitter
The CCDs are aligned to obtain a perfect image of the three measured color components. All
three CCDs see exactly the same area of the object at the same time. The corresponding pixels
of all three sensors are optically positioned in the same place (Figure 5-2). This makes color
analysis simpler and does not require any line matching or synchronizing. The resolution of the
camera is the same as for the individual CCD array.
Figure 5-2. Alignment of CCD Linear Arrays
6. Optical Considerations
6.1 Spectral Response of the Beam Splitter Prism
Figure 6-1. Spectral Distribution of the RGB Color Beam Splitter
Blue
Green
Red
Incoming Light
B
RGB Color Line
3 x CCD
Transmission (%)
0
400 450 500 550
Wavelength (nm)
blue green red
600 650 700
20
40
60
80
100

7
5334C–IMAGE–06/05
AKYLA HD 20/25/33/40 LV
Figure 6-1 shows the prism’s reaction at each wavelength. Transmissivity is well balanced, both
in the sense of peak response and the total amount of light passed to the sensors at each wave-
length (sum of the three separate curves). This all results in excellent color separation compared
to tri-linear CCD sensors.
Figure 6-2. Spectral Response of AKYLA Cameras
Figure 6-2 illustrates the spectral transmissivity measurements of the beam splitter prism and
the spectral sensitivity of the CCDs.
6.2 Camera Operation
The CCDs convert the incoming light to electrical charges. The amount of charge generated in
each of the individual pixels is directly proportional to the intensity of light they receive. The
resulting charge packets are transferred into two high-speed CCD shift registers and transferred
to the output charge-to-voltage converters of the CCDs. The generated output video is Correlate
Double Sampled (CDS) and the result is amplified by two user-accessible gain factors prior to
digitization into 12 bits.
Relative Spectral Response (%)
0
20
40
60
80
100
120
350 400 450 500 550 600 650 700 750
Wavelength (nm)

8
5334C–IMAGE–06/05
AKYLA HD 20/25/33/40 LV
Figure 6-3. Camera Synoptic
The AKYLA HD cameras operate in a monoshot mode. For each rising edge of the NewLine sig-
nal, the camera responds by sending out the digital data stream of the previous linescan time
period. The output frequency is constant. The distance in time between two NewLine edges can
be set to any value above the specified minimum. The reverse of this time is the line rate (Hz).
The AKYLA HD cameras have been optimized for high-speed applications. Therefore, best per-
formance is achieved at line rates of hundreds of lines per second or above.
Other programmable functions include:
• Color channel specific programmable exposure control
• Color channel specific programmable analog gain
• Color channel specific programmable digital gain
• Programmable offset
• Retrieval of the PROM version number
• Non-volatile memory banks for programmable settings
AD
AD
CCD
AD
AD
CCD
AD
A
CDS
CDS
CDS
CDS
CDS
CDS D
CCD
CTRL
PCU
DC
DC
VIN
OSC
Ctrl Out
Data Out
Timing
Temperature
Monitoring
Voltage
Monitoring
Non Volatile
Memory
Gain Ctrl
12-bit
12-bit
12-bit
12-bit
12-bit
12-bit
Ctrl In
RS-232 2
2

9
5334C–IMAGE–06/05
AKYLA HD 20/25/33/40 LV
7. Timing
Figure 7-1. Relationship Between the Data Output and NewLine (CC1) Signals
The effective integration time can be made shorter than the actual linescan period (time between
two consequent NewLine pulses) by holding the ExpCtrl (CC2) signal in its active state until the
beginning of the targeted interception period. Within the linescan period, whenever the ExpCtrl
input is held low, no charge can be collected into the pixels. This is why the actual integration
time is the time span between the (last) rising edge of the ExpCtrl input signal and the next rising
edge of the NewLine input.
Figure 7-2. Line Rate and Integration Time
The two most common modes of operation of linescan cameras are free-run mode or encoder
input-driven mode.
In the free-run mode, both the linescan period and the integration time can be precisely con-
trolled. But if the linescan period is determined by an encoder input, the integration time can best
be kept constant by using the encoder input pulse for generating the ExpCtrl signal. The New-
Line pulse is sent after a constant delay (see ”Exposure Control Mode (Address 204)” on page
30).
The AKYLA camera constantly monitors all the internal supply voltages and the internal temper-
ature. Temperature warnings can be monitored via the LED of the rear panel and the
temperature output signal of the data connector.
Line 1
Line 0 Line 1 Line 2 Line 3
Line 2 Line 3
Data Out
NewLine
(CC1)
Line Scan Period
NewLine
Exp Ctrl
Pixel Strobe
Data
Data Read Out
Line Scan Period
Integration Time
R R
N
N N+1
N-1
GGBB

10
5334C–IMAGE–06/05
AKYLA HD 20/25/33/40 LV
7.1 Timing Diagrams
Figure 7-3. Parallel Color Channel Mode, 20/25 MHz per Channel
Figure 7-4. Timing Diagram
NewLine
Input
Change of Line
Internal
ExpCtrl
Input
Line Valid
Output
Pixel Strobe
Output
Data 35-0
N = 1024 or 2048
N-1 N - - 1 2 3 N-2
T9
T7
T6
T5
T2
T3
T4 T5
T4
T1
T8
N-1 N - - 1 2
T3
Table 7-1. Timings
Symbol Parameter Min Nom Max Unit
T1 NewLine low 0.05 10 – µs
T10
T11
T12
i - 2
Pixel Strobe
Data 35-0 i - 1 i i+1

11
5334C–IMAGE–06/05
AKYLA HD 20/25/33/40 LV
T2
Linescan period
AKYLA HD20 1010/1014 55.7 – – µs
AKYLA HD25 1010/1014 44.7 – – µs
AKYLA HD33 1010/1014 33.7 – – µs
AKYLA HD40 1010/1014 28.2 – – µs
AKYLA HD20 2010 106.9 – – µs
AKYLA HD25 2010 85.6 – – µs
AKYLA HD33 2010 64.4 – – µs
AKYLA HD40 2010 53.8 – – µs
T3(1)
Delay to change of line
AKYLA HD20 xxxx 0.39 – 0.44 µs
AKYLA HD25 xxxx 0.45 – 0.49 µs
AKYLA HD33 xxxx 0.52 – 0.55 µs
AKYLA HD40 xxxx 0.54 – 0.57 µs
T4 Integration time 2 – – µs
T5 Delay to ExpCtrl 2 – – µs
T6(1)
Delay to LineValid high
AKYLA HD20 xxxx 2.38 – 2.43 µs
AKYLA HD25 xxxx 2.03 – 2.07 µs
AKYLA HD33 xxxx 1.7 – 1.73 µs
AKYLA HD40 xxxx 1.54 – 1.57 µs
T7
LineValid high to first data
AKYLA HD20 xxxx – 25 – ns
AKYLA HD25 xxxx – 20 – ns
AKYLA HD33 xxxx – 15 – ns
AKYLA HD40 xxxx – 14 – ns
T8
Last data to LineValid low
AKYLA HD20 xxxx – 25 – ns
AKYLA HD25 xxxx – 20 – ns
AKYLA HD33 xxxx – 15 – ns
AKYLA HD40 xxxx – 11 – ns
Table 7-1. Timings (Continued)

12
5334C–IMAGE–06/05
AKYLA HD 20/25/33/40 LV
Notes: 1. Please note the one pixel jitter. To remove the jitter, clock the Newline input with an even num-
ber of pixel clocks.
8. Processing of CCD Output
8.1 Analog Video Path
Atmel AKYLA HD cameras use a two-channel Atmel CCD for each color. Figure 8-1 is a simpli-
fied illustration of the analog video path of one channel. The video path itself is completely
analog until digitized with a 12-bit resolution in close vicinity of the CCD itself. All adjustments
performed on the analog video signal are digitally controlled.
Symbol Parameter Min Nom Max Unit
T9
Transfer Time
AKYLA HD20 1010-1014/2010 – 51.2/102.4 – µs
AKYLA HD25 1010-1014/2010 – 41/82 – µs
AKYLA HD33 1010-1014/2010 – 30.72/61.44 – µs
AKYLA HD40 1010-1014/2010 – 25.6/51.2 – µs
T10
PixelStrobe period
AKYLA HD20 xxxx – 50 – ns
AKYLA HD25 xxxx – 40 – ns
AKYLA HD33 xxxx – 30 – ns
AKYLA HD40 xxxx – 25 – ns
T11
PixelStrobe low
AKYLA HD20 xxxx – 24 – ns
AKYLA HD25 xxxx – 19 – ns
AKYLA HD33 xxxx – 14 – ns
AKYLA HD40 xxxx – 14 – ns
T12
Data setup time
AKYLA HD20 xxxx – 28 – ns
AKYLA HD25 xxxx – 22 – ns
AKYLA HD33 xxxx – 17 – ns
AKYLA HD40 xxxx – 17 – ns
Table 7-1. Timings (Continued)

13
5334C–IMAGE–06/05
AKYLA HD 20/25/33/40 LV
Figure 8-1. Analog Video Path
The analog video signal is first Correlate Double Sampled and amplified in the preamp gain
stage. After the CDS block, it is possible to further amplify the signal with an analog gain stage.
The analog video path also includes an input clamp circuit that is not drawn in Figure 8-1. The
input clamp circuit removes the CCD’s optical black offset to maximize system headroom and
the effect of gain change on the black level. The effect of this circuit causes the digital output
data to start from zero when the CCD is exposed to dark. If desired, the dark level register can
be used to obtain a positive offset in the output data. If this parameter differs from zero, the
channel’s dark level has an offset equal to the dark level setting. Changing this setting can be
desirable when using the pixel correction unit, since the pixel to pixel variations in the dark are
present in the raw data, enabling better correction.
Lastly, the 12-bit data streams from the two output channels are digitally multiplexed into one
data stream representing the CCD output.
8.2 Pixel Correction Unit
8.2.1 Description
The Atmel AKYLA HD series line scan cameras incorporate a user-programmable real-time
pixel correction unit, PCU. The PCU can be set-up by downloading the appropriate correction
data via the RS-232.
The PCU can simultaneously perform white balancing, removal of pixel to pixel offsets (PRNU
and DSNU), lighting profile correction, removal of lens curvature and/or perform custom opera-
tions on the camera’s output data.
8.2.2 Data Order
The correction data consists of 24 bits of data per color pixel. Therefore, for a full RGB pixel, you
have to provide 72 bits of data. The data is sent to the camera via the RS port starting with the
first pixel in the line. Colors are sent in RGB order to the camera. The start of transmission to the
camera is illustrated below, each letter corresponds to one byte (8 bits) of data:
123
RRR GGG BBB RRR GGG BBBR...
Channel 0
Preamp Gain Analog Gain Dark Level
Channel 1
CDS
12
6108
12
MUX
A
D
A
D
A
D
A
D

14
5334C–IMAGE–06/05
AKYLA HD 20/25/33/40 LV
Within a single color pixel the data is ordered into a multiplier and an offset. The multiplier con-
sists of 14 bits and the offset of 10 bits. Thus, the three bytes that make up the correction data
for one color pixel are internally divided on a bitwise level, as shown in Table 8-1:
Refer to RS-232 specifications for additional information on how to download correction data to
the camera.
8.2.3 Correction Algorithm
The pixel correction unit (PCU) uses a simple linear algorithm to correct the camera’s digital out-
put data. The formula below is used to correct all data once correction is enabled:
yi= (xi- bi) x ai
•y
i= corrected output data
•x
i= camera raw data
•b
i= offset to be subtracted from the raw data
•a
i= multiplier for scaling of data
Figure 8-2. Correction Algorithm
Since the offset bihas a 10-bit range, it is possible to subtract greater values than the camera
dark level, which is typically around 40 DU. As an example, you might want to subtract the back-
ground of the image instead of the dark level.
Table 8-1. Bitwise Level
R (byte 0) R (byte 1) R (byte 2)
Multiplier Offset
1
3
1
2
1
1
1
098765432109876543210
Data Output
Intensity
bi
xixi - biai(xi - bi)

15
5334C–IMAGE–06/05
AKYLA HD 20/25/33/40 LV
The multiplier aihas a 14-bit range. The multiplier is scaled so that a 14-bit multiplier value of
4096 DU by default equals multiplying by 1. Therefore, to increase the signal of a pixel it has to
be multiplied with a number greater than 4096 DU and accordingly, has to be multiplied with a
smaller number to attenuate the signal. This means that a single pixel cannot be multiplied with
a multiplier greater than 4 or attenuated more than 4096 times. Note that multiplying with a num-
ber larger than 1 (4096) results in more image noise.
By altering the content of the shifter register, it is possible to reset the multiplier unity level to any
multiple of 2 between 128 and 16384. Notice that setting this register to 16384 does not permit
any amplification, but on the other hand allows fine resolution attenuation. Similarly, setting this
register to low values allows much amplification, but makes the multiplier effect coarser at val-
ues close to the selected unity value.
As mentioned above, the correction unit can perform multiple corrections on the image with one
set of correction data. White balancing or any user-defined color balance can be achieved by
multiplying the color channels, that have a response differing from the desired response, with
suitable multipliers.
8.2.4 Correction Implementation
Figure 8-3. Block Diagram of the Correction Data Path
The correction algorithm is implemented as shown in Figure 8-3 for each color channel. To begin
with, all offsets are subtracted from the raw 12-bit CCD output data. These include the pixel to
pixel offsets in the dark (DSNU) and any custom subtractions. In the diagram, this subtraction is
marked as SUBi. Also, the channel’s specific offset is subtracted from the raw data. Thus, alto-
gether it is possible to subtract half the camera’s dynamic range from the raw data.
Secondly, after performing the subtractions, the data is multiplied with a 14-bit pixel-specific mul-
tiplier. This results in a maximum of 26 bits of data per pixel, out of which the topmost
12 bits are routed to the camera’s data output. The output data passes through a left shifter
where it is possible to digitally amplify the data by shifting it from 0 to 7 positions to the left. Also,
the shifter shifts the data to the correct location depending on the unity multiplier level set in the
shifter register.
Example:
The shifter register is set to 7, which equals 128 as a unity multiplier. The digital gains are set to
7 as well, equalling 128x digital gain. In this case, the result after the multiplication is shifted up
14 positions, which means the lowest 12 bits of the resulting 26 bits are shifted to the data
output.
Multiplieri
Raw DataiData Outi
Subi
Offset 10 11 4
Lshifter
Max. 14
10 Digital Gain
Shifter Reg. 3
3
12 12
12 26
14

16
5334C–IMAGE–06/05
AKYLA HD 20/25/33/40 LV
8.2.4.1 Example on Performing Multiple Corrections
White balancing can be achieved by selecting multipliers so that the data values on all color
channels have an equal digital response from pixel to pixel. Normally, the channel that is closest
to saturation is selected as a reference for the other channels. Other choices are possible but
they limit the dynamic range of the output signal. Figure 8-4 on page 16 depicts a typical situa-
tion. In the image, the output of the red channel serves as a reference for the correction of the
other two channels. To achieve white balance, every pixel in the red channel has to be multiplied
with a constant of 1, and every pixel in the green and blue channels with multipliers of a little
over 1 (varying from pixel to pixel), so that each color pixel has a balance of its own.
Figure 8-4. Correction in the Direction of the Vector
To remove unevenness of the lighting profile and lens curvature along the vector while perform-
ing white balance, each pixel along the vector needs to be scaled to the corresponding red
maximum value (L1). In this case, for the line profile on all color channels to equal L1, the red
line must also be scaled. Thus, at the beginning of the red line, the lowest point L2 has to be
multiplied with a multiplier Rx, so that it equals L1. Accordingly, at the start of the blue line, L3
has to match L1 for the camera to be in white balance.
As illustrated in Figure 5-1 on page 6, the blue channel has the largest multipliers and the centre
of the red channel has multipliers close to unity. Additionally, the far ends of all color channels
have the largest multipliers.
Data Output
Pixels
L1
L2
RG
1B1G2B2
L3

17
5334C–IMAGE–06/05
AKYLA HD 20/25/33/40 LV
9. Electrical Interface
All the electrical connections of the AKYLA color linescan camera are made via the rear panel.
The 100-pin data connector is used for interfacing with commercial frame grabber boards or
your own electronic equipment.
All signals are RS-422 or RS-644 (LVDS) compliant. Each signal is presented as a pair of two
opposite signals, where the difference between the two defines the logical level of the original
signal. This effectively reduces common mode noise.
A standard RS-232 interface is used for changing the camera’s parameters. For details on
RS-232 SUBD9 cabling, refer to ”Communication” on page 23.
Six indicator LEDs (on the right hand side) show the camera’s status.
Figure 9-1. Rear Panel Layout for LVDS Models
9.1 LED Indicators
Table 9-1. LED Indicator Description
LED Indicator Color Description
PWR Green On: power input OK
RUN Green
On: normal operation
Off: 1) The higher temperature limit has been exceeded and camera
operation has been shut down. After the external temperature has fallen
into the specified range, switch the power OFF once and then ON again
2) The camera did not start up properly. Check the input power lines,
the PWR LED and the voltages applied to the programming pins (if you
have just upgraded the camera)
STATUS 1 Green On: correction unit (PCU) is enabled
Off: correction unit (PCU) is disabled

18
5334C–IMAGE–06/05
AKYLA HD 20/25/33/40 LV
9.2 RS-232 Serial Connector
The RS-232 connector can be found on the rear panel of the camera. Use a standard 9-pin
D-connector type socket (i.e. AMP 344643-1) for the camera side.
Figure 9-2. RS-232 Serial Connector
9.3 Power Input
Camera connector type: Hirose HR10A-7R-6PB (male).
Cable connector type: Hirose HR10A-7P-6S (female).
STATUS 2 Green On: camera is ready for operation with correction data loaded
Off: camera is performing internal boot cycle
PWR ERR Red On: at least one of the internal supply voltages has failed
TMP ERR Red
On: warning that the internal temperature is too high. If the camera cools
down, the LED light goes out, but if the temperature rises further the
camera shuts down and remains so until the next power-up
Table 9-1. LED Indicator Description
LED Indicator Color Description
Table 9-2. RS-232 Serial Connector Pin-out
Camera Side D9 Connector PC Side D9 Connector
Signal Pin Pin Signal
TD (Transmit Data, output) 3 > 2 RD (Receive Data, input)
RD (Receive Data, input) 2 < 3 TD (Transmit Data, output)
RTS (Request To Send, output) 7 > 8 CTS (Clear To Send, input)
CTS (Clear To Send, input) 8 < 7 RTS (Request To Send, output)
SG (Signal Ground) 5 – 5 SG (Signal Ground)

19
5334C–IMAGE–06/05
AKYLA HD 20/25/33/40 LV
Figure 9-3. Receptacle Viewed from Behind the Camera
The AKYLA cameras operate from a single supply voltage of nominally 24 VDC at typically 500 to
1000 mA, depending on the mode of operation and the external terminations of the output
signals.
The maximum power consumption is 26 W. For low frequency line ripples (less than 120 Hz), a
±10% ripple is acceptable as long as the voltage level stays between 20 to 36 VDC.
9.3.1 Supply Voltage
Nominal: 24 VDC
Range: 20 to 36 VDC
9.3.2 Supply Current
Typical: 500 to 1000 mA
Maximum: 1.1 A (at 24 VDC and at power-on)
9.3.3 Ripple
±10% (max 120 Hz): voltage level (= nominal plus ripple) must stay between 20 to 36 V.
9.4 Programming Connector
The 15-pin D-shell connector on the left side of the back plane is reserved for factory use. New
firmware updates can also be downloaded using this connector.
9.5 Data Connector
A single 100-pin data connector handles the data communication. The connector is labelled
LVDS DATA.
Table 9-3. Power Supply Connector Pinout
Pin Signal Pin Signal
1PWR 4GND
2PWR 5GND
3PWR 6GND
1
2
3
6
5
4

20
5334C–IMAGE–06/05
AKYLA HD 20/25/33/40 LV
Figure 9-4. Data Connector on the AKYLA LVDS
AMP Amplimite 749070-9, Receptacle 100-pin, Pinout Version: 1.1 – February 6,
2002
9.5.1 Description of the Signals
Data is sent out on plus and minus lines of 12 bits, where 0 is the lowest (LSB). In multiplexed
output configurations, data is sent out on red channel pins only, either as R, G and B or B, G,
and R. The 8 highest bits should be used for 8-bit applications (bits 4 to 11).
The PixelStrobe signals (R, G and B) are used for clocking the data to your input device (frame
grabber). They are continuous sequences of pulses at a constant frequency. All 3 signals are
identical.
The LineValid signal indicates the period of valid pixels out of the otherwise continuous stream
of data from the camera. The first rising edge of the PixelStrobe signal after the rising edge of
the LineValid signal corresponds to the first valid data.
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
Pin I/OName Pin I/OName
Red2+
Red2-
Red3+
Red3-
Red4+
Red4-
Red5+
Red5-
Red6+
Red6-
Red7+
Red7-
Red8+
Red8-
Red9+
Red9-
Green8+
Green8-
Green9+
Green9-
Green10+
Green10-
Green11+
Green11-
Blue6+
Blue6-
Blue7+
Blue7-
Blue8+
Blue8-
Blue9+
Blue9-
Temperature+
Temperature-
Out1+
Out1-
Red0+
Red0-
Red1+
Red1-
ExpCtrlG+
ExpCtrlG-
ExpCtrlB+
ExpCtrlB-
Green0+
Green0-
Green1+
Green1-
Out2+
Out2-
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
I
I
I
I
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
I
I
I
I
I
I
I
I
−
−
Red10+
Red10-
Red11+
Red11-
Green2+
Green2-
Green3+
Green3-
Green4+
Green4-
Green5+
Green5-
Green6+
Green6-
Green7+
Green7-
Blue2+
Blue2-
Blue3+
Blue3-
Blue4+
Blue4-
Blue5+
Blue5-
Blue10+
Blue10-
Blue11+
Blue11-
Blue0+
Blue0-
Blue1+
Blue1-
PixelStrobeR+
PixelStrobeR-
LineValid+
LineValid-
PixelStrobeG+
PixelStrobeG-
PixelStrobeB+
PixelStrobeB-
NewLine+
NewLine-
ExpCtrlR+
ExpCtrlR-
In0+
In0-
In1+
In1-
GND
GND
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1