Atmel CAMELIACOL 8M User manual

1
Main Features
•High Sensitivity Full Frame CCD Sensor
•2048 x 2048 Resolution with 14 µm Square Pixels
•Bayer Color Mosaic
•12-bit Dynamic Range
•Very Low Noise: 66 dB SNR
•Binning Modes
•LVDS Data Format
•High Data Rate: 20 Mpixels/s
•Flexible and Easy to Operate via RS-232 Control
– Trigger Mode: Free Run or External Trigger Modes
– Binning 2 x 2 and 4 x 4
– Exposure Time
– Gain: x1 to x8
•Single Power Supply: 24VDC
•High Reliability – CE Compliant
•F (Nikon) Mount Adapter (Lens Not Supplied)
Product Description
This camera is designed to meet high performance and quality requirements while
providing ease of use.
• Atmel manages the entire manufacturing process, from the sensor to the camera.
The result is a camera that operates in 12 bits, with dedicated electronics that
provide an excellent signal to noise ratio.
• The programmable settings let the user work at different integration times and
gains. The external trigger allows synchronization of the camera on an external
event while the hardware white balance adjustment avoids subsequent software
processing.
Applications
The performance and reliability of this camera make it well suited for the most
demanding applications such as film and document scanning, semiconductor and
PCB inspection, DNA analysis, metrology or X-ray imaging.
CAMELIACOL 4M
FullFrameDigital
Camera
Rev. 5302C–IMAGE–03/04

2CAMELIACOL 4M Color Digital Camera 5302C–IMAGE–03/04
Camelia™Package Contents
Depending on the configuration selected, a Camelia package may include:
• Camelia color camera
• FGT color frame grabber board
• Power supply cable and RS-232 cable
• Data and sync cable
• COMMCAM software
• FGT software
• Documentation
System Requirements • 24V (0.6A) power supply
•Computer:
– Minimal configuration:
Intel®Pentium®II 350 MHz
RAM: 128 Mb
Cache memory: 256 Kb
1 free PCI slot
– Operating system:
Windows®NT 4.0
Windows®95b, 98
• NIKON lens
• Lighting control
– Shutter/chopper or pulsed lighting
– IR cut-off filter: a 2 mm BG38 is recommended to filter light from 700 to
1100 nm
Getting Started 1. Connect the camera to one of the computer serial ports (COM1 or COM2) by
using the RS-232 cable.
2. Switch on the camera.
3. Install “COMMCAM” software in your computer (refer to the “COMMCAM User
Guide”).
4. Install the FGT COLOR frame grabber board and FGT software on your com-
puter (refer to the “FGT Frame Grabber User Guide”).
5. Run the system.

3
CAMELIACOL 4M Color Digital Camera
5302C–IMAGE–03/04
Description of Imaging System
Figure 1. Imaging System
The Camelia 4M is powered by a 24V power supply and is configured through the serial
port of the computer. The camera sends digital video to the FGT frame grabber.
As Camelia's CCD is a full frame sensor, either pulsed lighting or a chopper/shutter
must be used in front of the camera during the integration time in order to obtain incident
lighting on the CCD. The user must design an electro-optical interface to drive the cam-
era, shutter/chopper or lighting by using the SHUTTER signal delivered by the camera.
If required, the system can send an external trigger or external ITC (integration time
control) signal to the camera.
Light Source
Light &
Shutter
Trigger
Cables
Lens Shutter
& BG38
Camera Power Supply Cable 24V
RS-232
Cable
Data &
Sync
Cable
Control Box
Computer
FGT
Frame Grabber

4CAMELIACOL 4M Color Digital Camera 5302C–IMAGE–03/04
Camelia Color 4M Camera
CCD Description • Image format: 28.7 mm (V) x 28.7 mm (H)
• 2048 mm (V) x 2048 mm (H) active pixels
• Pixel Geometry: 14 µm (V) x 14 µm (H)
• Filter Mosaic (Bayer Pattern):
Note: The first active pixel of the first active line is blue.
• Antiblooming by clocking.
Timing • 2 x 2 and 4 x 4 pixel binning can be used to enable previewing modes.
• When binning is used, the camera delivers black and white video.
• The data rate is (pixel clock): 20 MHz.
Three timing modes are available:
• Continuous
• External triggered
• Integration time controlled (ITC)
Continuous Timing Mode The camera delivers frames continuously:
• Frame N+1 integration starts as soon as frame N readout is completed (Figure 2).
• Integration time is set by the RS-232 interface.
Figure 2. Continuous Timing Diagram
First Column
BGBG
GRGR
BGBG
First Line GRGR
Table 1. Frame Readout Times
Mode Frame Readout Time
No binning 235 ms
2 x 2 pixel binning 125 ms
4 x 4 pixel binning 70 ms
3
2048 pixels
Int. time set by RS232
FEN
LEN
Video lines
2 1
2048 2047 2046
SHUTTER
Frame
integration Shutter delay Frame readout 2 ms

5
CAMELIACOL 4M Color Digital Camera
5302C–IMAGE–03/04
External Trigger Timing Mode The external TRIG signal gives the user control over the start of frame integration:
• The rising edge of TRIG activates the start of frame integration. This rising edge is
synchronized by the camera with a precision of 112 µs.
• Integration time is set by the RS-232 interface.
• Note that the TRIG signal period must be greater than the sum of the integration
time and the frame readout time.
Figure 3. External Trigger Timing Diagram
Integration Time Control (ITC)
Timing Mode The external ITC signal enables the user to fully control the frame integration:
• The falling edge of ITC activates the start of frame integration. This falling edge is
synchronized by the camera with a precision of 112 µs.
• The rising edge of ITC activates the stop of frame integration. This rising edge is
synchronized by the camera with a precision of 112 µs.
• Note that the ITC signal period must be greater than the sum of the integration time
(defined by ITC low) and the frame readout time.
Figure 4. Integration Time Control Timing Diagram
Antiblooming by
Clocking Antiblooming can be activated or inhibited (see “RS-232 Interface” on page 7):
• Antiblooming OFF: antiblooming inhibited. This mode is recommended if
antiblooming is not required for the application.
• Antiblooming ON: antiblooming activated.
3
2048 pixels
Video lines
2 1
2048 2047 2046
Int. time set by RS232
Frame
integration Shutter delay Frame readout
LEN
FEN
TRIG
Waiting
SHUTTER
3
2048 pixels
Video lines
2 1
2048 2047 2046
Frame
integration Shutter delay Frame readout
Waiting
LEN
SHUTTER
FEN
ITC

6CAMELIACOL 4M Color Digital Camera 5302C–IMAGE–03/04
Electrical Interfaces
Power Supply
Digital I/O
Note: 1. LVDS (Low Voltage Differential Signal) is an EIA-644 standard.
LVDS Drivers/Receivers:
• LVDS: all digital I/Os are differential: (signal+, signal-). Specifications are given for
signal +.
• Manufacturer: National Semiconductor®.
• Driver: DS90C031TM (SO16 package)
• Receiver: DS90C032TM (SO16 package).
Table 2. Power Supply Specifications
Parameter Nominal Value Min Value Max Value
Voltage 24V 20V 28V
Current 0.60A N/A N/A
Table 3. Digital I/O Specifications
Symbol I/O Definition Level
TRIG_ITC I
Timing control:
- TRIG_ITC is either an external trigger or ITC
(integration time control) depending on the timing mode
configured via RS-232.
Operation with external trigger:
- TRIG_ITC = TRIG
Operation with ITC:
- TRIG_ITC = ITC
- TRIG_ITC is synchronized by the camera line clock
(jitter: 112 µs)
LVDS(1)
S(11..0) O Digital video output: 12 bits LVDS
FEN O Frame enable: - FEN = 0: frame data valid: active lines
- FEN = 1: frame data not valid LVDS
LEN O Line enable: - LEN = 0: line data valid: active pixels
- LEN = 1: line data not valid LVDS
PCK O Pixel clock LVDS
SHUTTER O
Shutter open/close:
- during integration: SHUTTER = 1
- during readout: SHUTTER = 0
Delay between the falling edge of SHUTTER and the start
of readout:
- 4 positions: 1, 5, 10 or 20 ms (set via RS-232).
LVDS

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CAMELIACOL 4M Color Digital Camera
5302C–IMAGE–03/04
RS-232 Interface The camera configuration is set by the RS-232 interface. Table 4 lists the available
features:
Note: 1. The camera’s video signal processing gain can be adjusted by setting either the CDS
or camera gain.
CDS gain: a 1x or 4x gain is available at the input of the video signal processing. Use
of the 4x gain is recommended for low level applications as it results in lower noise.
Camera gain: a range of 1x to 2x is available in 16 steps.
Table 4. RS-232 Specifications
Function RS-232 Configuration Comment
Timing mode
3 modes:
- continuous (free running)
- external trigger
- external ITC
Binning
3 modes:
- no binning
- 2 x 2 pixel binning
- 4 x 4 pixel binning
Image size: 2048 (H) x 2048 (V)
Image size: 1024 (H) x 1024 (V)
Image size: 512 (H) x 512 (V)
CDS gain(1) 2 positions:
- G = 1
- G = 4
G = 4 is recommended for
applications requiring high
sensitivity
Camera gain(1) Camera gain value from 1.00x to
2.00x in 16 steps
Shutter control 2 modes:
- active
- inactive (always open)
Shutter delay
4 positions:
- 1 ms
- 5 ms
- 10 ms
- 20 ms
Antiblooming
control
2 modes:
- active
- inactive
Integration time Value must be in milliseconds
Range: 1 to 2000 ms Must be an integer (e.g. 120 for
120 ms, 120.4 is not permitted)

8CAMELIACOL 4M Color Digital Camera 5302C–IMAGE–03/04
Electro-optical
Performance Conditions:
• Frame integration time: 40 ms
• Camera operating ambient temperature: 25°C
Notes: 1. LSB (Least Significant Bit): 12-bit = 4095 LSB or gray levels
2. Full-scale value VPE: maximum digital video signal
3. Temporal noise VN: r.m.s value in darkness; measured by subtracting 2 images pixel
to pixel
4. Dark signal non-uniformity: r.m.s value; excludes blemishes
5. Dynamic range DY = VPE/VN
6. Responsivity conditions: 3200K, BG38 2 mm, camera gain = 1x, light source powered
between 400 and 700 nm, measured on the sensor.
7. Resolution conditions: light source 3200K, BG38 2 mm, measured at
VIDEO = 2000 LSB, CDS gain = 1x.
Table 5. Electro-optical Performance
Parameter Symbol Typical Value Unit
Full-scale value(2) VPE 4095 LSB(1)
Temporal noise(3) VN 2 LSB
Dark signal non-uniformity(4) DSNU 5 LSB
Dynamic range(5) DY 2048 –
Responsivity(6) Rb
Rg
Rr
0.76
1.39
1.79 LSB/(nJ/cm2)
Responsivity(6) Rb
Rg
Rr
220
390
510 LSB/(lux.s)
Resolution(7)
Horizontal Resolution
Vertical Resolution TBD TBD – –– –

9
CAMELIACOL 4M Color Digital Camera
5302C–IMAGE–03/04
Figure 5. Camelia Color 4M Spectral Responsivity
Image Grade
Operating conditions • Room temperature: 20°C
• Integration time in darkness: 100 ms
• Light source: Halogen 3200K with BG38 (2 mm thick) IR cut-off with f/4 aperture
• Defective pixels will be detected separately for each color and with respect to the
mean value of each color
(See Table 6 on page 10 for amplitude or deviation with respect to the mean value). The
number and size of blemishes are computed by taking into account all the pixels of the
frame.
Definitions A column defect is a one-pixel-wide column with more than 20 defective pixels. The col-
umn's height is constant with the light level.
ADU: 12 bits correspond to 4096 ADUs.
α is the contrast of the defect measured as a percentage under light and in ADU in
darkness.
Note: nJ/cm2measured on the CCD chip.
Including BG38 2 mm.
Blue
Green
Red
0
1
2
3
4
Responsivity (LSB/nJ/cm2)
700650600550
Wavelength (nm)
500450400

10 CAMELIACOL 4M Color Digital Camera 5302C–IMAGE–03/04
Specification in darkness
Note: Adjacent columns in darkness are tolerated.
Specification Under
Illumination The test is carried out under illumination so that the most sensitive channel is at 80% of
the saturation level.
Blemishes are tested under white light and column defects are tested under green light
(P20).
Notes: 1. A maximum of 100 blemishes with an area between 1 x 1 and 2 x 2 is accepted but
the total number of pixels affected by blemishes is below 140.
2. Inside an area of 3 x 3 pixels, there is a maximum of 5 defective pixels.
3. There are no specifications on column linearity. Two defective columns must be sepa-
rated by a minimum number of two good pixels.
Table 6. Specifications in Darkness
Type Defects
Blemish threshold 90 ADU > α> 45 ADU α> 90 ADU
Maximum number of pixels
affected by blemishes
Area maximum (in pixels)
150
3 x 3
20 (among the 150)
1 x 1
Column threshold 45 ADU > α> 12 ADU α> 45 ADU
Maximum number of column
defects 10 0
Table 7. Specifications under Illumination
Type (White or Black Defects at 80% x VSAT
Blemish threshold [α] > 50%
Maximum number of pixels affected by
blemishes 140
Maximum number of blemishes
Area maximum (in pixels) 100(1)
2 x 2 4 3 x 3(2) or 2(X) x 4(Y)
Column threshold 1 [α] > 50%
Maximum number of column defects
(columns greater than threshold 1) 25(3)
Column threshold 2 [α] > 4%
Maximum number of column defects
(columns greater than threshold 2) 50 (including the 25)