Teledyne DALSA Piranha 2 P2-2x-40 Series User manual

P2-2x-xxx40, P2-4x-xxx40, P2-2x-xxx30
Camera User’s Manual
Revised 5/4/2011 10:27:00 AM
Line Scan CCD Cameras
4-May-11
03-032-00493-14
www.teledynedalsa.com

2 Piranha 2 User’s Manual
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© 2011 Teledyne DALSA. All information provided in this manual is believed to be accurate and reliable.
No responsibility is assumed by Teledyne DALSA for its use. Teledyne DALSA reserves the right to make
changes to this information without notice. Reproduction of this manual in whole or in part, by any
means, is prohibited without prior permission having been obtained from Teledyne DALSA.
About Teledyne Technologies and Teledyne DALSA, Inc.
Teledyne Technologies is a leading provider of sophisticated electronic subsystems, instrumentation and
communication products, engineered systems, aerospace engines, and energy and power generation
system s. Teled yne Technologies’ op erations are primarily located in the United States, the United
Kingdom and Mexico. For more information, visit Teled yne Technologies’ website at www.teled yne.com .
Teledyne DALSA, a Teledyne Technologies company, is an international leader in high performance
digital imaging and semiconductors with approximately 1,000 employees worldwide, headquartered in
Waterloo, Ontario, Canada. Established in 1980, the company designs, develops, manufactures and
markets digital imaging products and solutions, in addition to providing MEMS products and services.
For more information, visit Teled yne DALSA’s website at www.teledyned alsa.com.
Support
For further information not included in this manual, or for information on Teledyne DALSA’s extensive
line of image sensing products, please contact:
North America
605 McMurray Rd
Waterloo, ON N2V 2E9
Canada
Tel: [phone]
Fax: [phone]
www.teledynedalsa.com
[e-mail]
[e-mail]
Europe
Breslauer Str. 34
D-82194 Gröbenzell (Munich)
Germany
Tel: +49 - 8142 –46770
Fax: +49 - 8142 –467746
www.teledynedalsa.com
[e-mail]
[e-mail]
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Toshima-ku, Tokyo 170-0013
Japan
Tel: [phone]
Fax: [phone] (fax)
www.teledynedalsa.com
[e-mail]
[e-mail]
Camera Link is a trademark registered by the Automated Imaging Association, as chair of a committee of
industry members including Teledyne DALSA.

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Contents
Introduction to the Piranha 2 Line Scan Camera __________________________________ 5
1.1 Camera Highlights.......................................................................................................................................................5
1.2 Image Sensors .............................................................................................................................................................7
1.3 Camera Performance Specifications ............................................................................................................................8
Camera Hardware Interface________________________________________________ 13
2.1 Installation Overview...................................................................................................................................................13
2.2 Input / Output..............................................................................................................................................................13
2.3 Connectors, Pinouts, and Cables..................................................................................................................................14
2.4 Power Supplies ............................................................................................................................................................16
2.5 Control Inputs, Camera Link........................................................................................................................................16
2.6 Data Bus, Camera Link................................................................................................................................................17
2.7 Timing .........................................................................................................................................................................19
2.8 Camera Link Serial Communication............................................................................................................................22
Software Interface: How to Control the Camera __________________________________ 23
3.1 Overview......................................................................................................................................................................23
3.2 Command Format........................................................................................................................................................23
3.3 Processing Chain..........................................................................................................................................................24
3.4 Startup.........................................................................................................................................................................25
3.5 Saving and Restoring Settings.....................................................................................................................................25
3.6 Setting Baud Rate........................................................................................................................................................26
3.7 Setting the Data Mode.................................................................................................................................................26
3.8 Setting the Video Mode ...............................................................................................................................................27
3.9 Setting Line Rate and Exposure Mode.........................................................................................................................27
3.10 Setting a Region of Interest.......................................................................................................................................29
3.11 Returning Video Information ....................................................................................................................................29
3.12 Optimizing Offset Performance .................................................................................................................................31
3.13 Setting Gains .............................................................................................................................................................34
3.14 How to Calibrate the Camera....................................................................................................................................35
3.15 Setting and Reading FPN Coefficients.......................................................................................................................38
3.16 Setting and Reading PRNU Coefficients ....................................................................................................................39
3.17 Generating Test Patterns...........................................................................................................................................39
3.18 Monitoring the Camera .............................................................................................................................................40
3.19 Rebooting the Camera...............................................................................................................................................41
3.20 Setting the Pre-trigger ..............................................................................................................................................41
Optical, Mechanical, and Thermal Considerations_________________________________ 43
4.1 Mechanical Interface....................................................................................................................................................43
4.2 Optical Interface ..........................................................................................................................................................47

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4.3 Compliance ..................................................................................................................................................................49
CCD Handling Instructions_________________________________________________ 51
5.1 Electrostatic Discharge and the CCD Sensor ................................................................................................................51
5.2 Protecting Against Dust, Oil and Scratches..................................................................................................................51
5.3 Cleaning the Sensor Window.......................................................................................................................................52
Troubleshooting________________________________________________________ 53
6.1 Common Solutions.......................................................................................................................................................53
6.2 Troubleshooting Using the Serial Interface.................................................................................................................54
6.3 Specific Solutions .........................................................................................................................................................55
Camera Link™ Reference _________________________________________________ 59
EMC Declaration of Conformity______________________________________________ 61
Communications Protocol _________________________________________________ 63
C1 Protocol Overview.........................................................................................................................................................63
C2 Protocol Features..........................................................................................................................................................63
C3 Command Format and Examples .................................................................................................................................63
C4 Networking Mode .........................................................................................................................................................64
C5 Error Handling..............................................................................................................................................................67
C6 Camera Parameter Screen ...........................................................................................................................................70
C7 Commands....................................................................................................................................................................73
DC Offset De-rating Curve _________________________________________________ 79
Revision History ________________________________________________________ 81
Index _______________________________________________________________ 85

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1
Introduction to the
Piranha 2 Line Scan
Camera
1.1 Camera Highlights
Features
•Data rates up to 160MHz
•Resolutions from 1k to 8k for 40MHz model
•Resolutions from 1k to 8k for 30MHz model
•High responsivity
•Exposure control and antiblooming
•Pinned photodiode sensor for low image lag
•Programmable integration time, line rate, gain, offset, bit depth, test pattern, and
diagnostics
•Flat-field correction—minimizes sensor FPN and PRNU, lens vignetting and non-
uniform lighting
•Camera Link™ interface
•Single 12V to 15V power supply
•Compact design
Performance
•4x40MHz quad output data rate, 2x40MHz dual output data rate with 40MHz model
•2x30MHz dual output data rate with 30MHz model
•8 or 10-bit output from 10-bit digitization
•1024, 2048, and 4096 pixels, 10µm x 10µm, and 4096, 6144 and 8192 pixels, 7m x
7m, 100% fill factor
•Line rates up to 65kHz

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Programmability
•Simple ASCII protocol controls gain, offset, line rates, trigger mode, pixel correction,
test pattern output, and camera diagnostics.
•Serial interface (ASCII, 9600 baud, adjustable to 19200, 57600, 115200), through
Camera Link.
Usability
•Programmable gains, offsets, and camera controls
•End-of-line sequence and test pattern output for debugging
•Single input supply (+12V to +15V)
•Compliant with CE and MIL-STD-810E (shock and vibration)
Description
Piranha 2 takes performance to a new level. Two and four 8 or 10-bit outputs (selectable)
at up to 40MHz deliver up to 160MHz throughput.
Available in 1k to 8k resolutions, Piranha 2 is small, light, and uses a single voltage power
supply. Cabling and interface are simplified with the Camera Link high -speed serial
standard. The camera is sensitive, but still provides quiet, uniform output thanks to CDS
(correlated double sampling) and embedded flat-field correction algorithms. Gain and
offset are fully programmable for each output channel, and the camera can output test
patterns for cable/ system troubleshooting. All resolutions provide appropriate, readily -
available standard lens options (C-mount, F-mount, and M72x0.75 large format
photography standards).
All these features combine to make Piranha 2 the most powerful line scan camera in the
world. Set it loose on your toughest imaging challenge.
Applications
The Piranha 2 is ideal for applications requiring high speed, superior image quality, and
high responsivity.
Applications include:
Electronics manufacturing inspection
Postal/ parcel sorting
High performance document scanning/ image lift
Narrow and large web inspection
High-end industrial inspection

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1.2 Image Sensors
The image sensor u sed in you r camera depends on the cam era’s resolu tion and number of
taps.
1k, 2k, 4k (10 µm), 2 taps: IL-P1 (Figure 1)
2k, 4k (10 µm), 4 taps: IT-P1 (Figure 2)
4k (7 µm), 6k, 8k, 2 taps: IL-P4 (Figure 3)
4k (7 µm), 6k, 8k, 4 taps: IT-P4 (Figure 4)
Figure 1: IL-P1 Image Sensor (1k, 2k, 4k (10 µm), 2 tap models)
Figure 2: IT-P1 4k Image Sensor (2k, 4k (10 µm), 4 tap models)
N PinnedPhotodiodes(10µm x 10µm)4 I32 S 4 I 32 S
CCD Readout Shift Register
CCD Readout Shift Register
5 I
5 I
4 I
4 I
TCK
PR
VPR
VSTOR
CR1S,CR2S,
CR1B,CR2B,CRLAST
CR1S,CR2S,
CR1B,CR2B,CRLAST
VSET
VBB
RST
VOD
VSS
VDD
OS1
32 S
4 I Light-shielded pixels
N = 1024 or 2048
Isolationpixels
OS2
StorageWell with ExposureControl andReset Structure
StorageWell with ExposureControl andReset Structure
Relativepositionof packagePin1
1
Relative position
of package Pin 1
1
N=2048 or 4096

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Figure 3: IL-P4 Image Sensor (4k (7µm), 6k, and 8k, 2 tap models)
Figure 4. IT-P4 Image Sensor (4k (7µm), 6k, and 8k, 4 tap models)
1.3 Camera Performance Specifications
The following two tables list the camera’s perform ance sp ecifications. The first table lists
the operating ranges of the camera, and the second table lists the performance
specifications at minimum, nominal and maximum gain levels at 1kHz data rate. Note
that as gain levels increase, performance decreases, because your signal to noise
decreases.
Also note that the cameras performance specifications were obtained using a line rate of
only 1kHz. At low line rates, dark current can become a significant source of noise and
appears in specifications such as FPN, PRNU and noise. If you operate the camera at
faster line rates, such as 10kHz or greater, the amount of dark current will be reduced by
10x or greater.
N PinnedPhotodiodes(7µm x 7µm)4 I32 S 4 I 32 S
CCD Readout Shift Register
CCD Readout Shift Register
5 I
5 I
4 I
4 I
TCK
PR
VPR
VSTOR
CR1,CR2,CRLAST
CR1,CR2,CRLAST
VSET
VBB
RST
VOD
VSS
VDD
OS1
32 S
4 I Light-shielded pixels
N = 4096,6144 or 8192
Isolationpixels
OS2
StorageWell with ExposureControl andReset Structure
StorageWell with ExposureControl andReset Structure
Relativepositionof packagePin1
1
N PinnedPhotodiodes(7µm x 7µm)4 I32 S 4 I 32 S
StorageWell withExposure Control and Reset Structure
StorageWell withExposure Control and Reset Structure
CCD Readout Shift Register
CCD Readout Shift Register
5 I
5 I
5 I
5 I
OS4
TCK
PR
VPR
VSTOR
CR1,CR2,
CRLAST-L
CR1,CR2,
CRLAST-L
CR1,CR2,
CRLAST-R
CR1,CR2,
CRLAST-R
32 S
4 I Light-shielded pixels
N = 4096,6144 or 8192
Isolationpixels
VSET-R VBB
RST-R
VOD-R
VSS-R
VDD
OS3
VSET-L
VBB
RST-L
VOD-L
VSS-L
VDD
OS1
OS2
Relativeposition
ofpackagePin1
1

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Table 1. Piranha 2 Operating Requirements and Ranges
Operating Requirements
Units
Typical
Notes
Power
1024—2 o/ p
W
6
2048—2 / 4 o/ p
W
6 / 8.5
4096 (7µm)—2 / 4 o/ p
W
6 / 8.5
4096 (10µm)—2 o/ p
W
7.5
4096 (10µm)—4 o/ p
W
9.6
6144—2 / 4 o/ p
W
7.5 / 9.6
8192 —2 / 4 o/ p
W
7.5 / 10
Power Supply Current (Vin = +12V)
1024—2 o/ p
mA
480
2048—2 / 4 o/ p
mA
500 / 700
4096—2 / 4 o/ p
mA
500 / 700
4096 (10µm)—2 o/ p
mA
600
4096 (10µm)—4 o/ p
mA
800
6144—2 / 4 o/ p
mA
600 / 800
8192 —2 / 4 o/ p
mA
620 / 840
Time to power up, typ
sec.
15
Time to calibrate (FPN/ PRNU)
1024
sec.
10
2048
sec.
19
4096
sec.
38
6144
sec.
85
8192
sec.
115
Specification
Units
Min
Max
Notes
Data Rate, per tap (40 MHz model)
MHz
40
40
(30 MHz model)
MHz
30
30
1
Specification
Units
Min
Max
30 MHz
Max
40
MHz
Line Rate
1024, 2 o/ p
kHz
1
49.6
65.3
1
2048, 2 o/ p
kHz
1
27
35.4
1
2048, 4 o/ p
kHz
1
68
1
4096, 2 o/ p
kHz
1
14
18.5
1
4096, 4 o/ p
kHz
1
36.2
6144, 2 o/ p
kHz
1
12.3
6144, 4 o/ p
kHz
1
24.4
8192, 2 o/ p
kHz
1
7.15
9.3
8192, 4 o/ p
kHz
1
18.6
Temperature
Front plate Temperature
°C
10
50
2
Temperature drift before
recalibration (recommendation)
°C
10
Sensor Alignment

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Specification
Units
Min
Max
Notes
x,y
um
±175
z
mm
±0.25
z
°
±0.6
Note that the environment conditions represent the state of the environment when the
camera was being tested. Typical results are the average values obtained with at a 1kHz
line rate and 30°C. Maximum results represent the worst case results from any camera
operating at 50°C with a 1kHz line rate.

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Table 2. Piranha2 Performance Specifications, 1kHz line rate, 40MHz Model
Min. Gain Nom. Gain Max. Gain
Environment Conditions
Units
Min
Typ
Max
Min
Typ
Max
Min
Typ
Max
Notes
Data Rate (40MHz model)
MHz
40
40
40
40
40
40
40
40
40
Line Rate
kHz
1
1
1
1
1
1
Gain Setting
dB
-10
-10
-10
0
0
0
+10
+10
+1
0
Front Plate Temperature
°C
30
50
30
50
30
50
3
Electro-Optic Specifications
Units
Min
Typ
Max
Min
Typ
Max
Min
Typ
Max
Notes
Broadband Responsivity, 7um pixels
DN/ (nJ/ cm2)
3
3.4
3.8
9.4
10.7
12
30
34
38
Broadband Responsivity, 10um pixels
DN/ (nJ/ cm2)
6
6.8
7.6
18.8
21.4
24
60
68
76
Dynamic Range
Ratio
496:1
207:1
390:1
62:1
135:1
Pk-Pk Noise, max
DN
2
3
4
8
15
32
4
RMS Noise, max
DN
0.5
0.5
0.75
1.2
2.2
4
4
FPN uncorrected, max 4K and under
DN
1.1
4
3.5
8
8
27
5
FPN uncorrected, max 6K and over
DN
1.6
4
4
8
14
27
5
FPN corrected, max
DN
0.3
2
1
2
2
8
2
PRNU uncorrected
1K and 2K, ECD/ ECE
DN
5
18
5
23
8/ 10
39
4k, ECD/ ECE
DN
9
28
10
28
12/ 2
0
43
6K and 8K, ECD/ ECE
DN
15
38
16
38
14/ 2
7
55
PRNU corrected ECD/ ECE
DN
1.5
/ 2
3 / 3
1.2/
1.5
3/
8
2/ 3.
5
5/
27
2
DC Offset
DN
4k and under
2
3
5
5
7
17
6
6k and over
2
3
5
5
14
17
6
Notes:
DN = Digital Numbers (0-255); also known as gray levels.
ECE = Exposure Control Enabled
ECD = Exposure Control Disabled
•All measurements taken in 8-bit output mode.
•All measurements are valid for front plate temperatures in still air.
•All measurements used a Tungsten halogen light source, 3200K bulb temp., and
750nm cutoff filter
1. All specifications for the 30MHz model are preliminary.
2 Due to FPN/ PRNU correction calculations, certain digital numbers will be
unavailable when outputting 10 bits with FPN/ PRNU correction.
3 Measured at front plate. The corresponding ambient temperature range with still air
is 0°C - 37°C.
4 Measurements taken at maximum line rates.
5 Exposure control enabled to set the maximum integration time to 200 microseconds.
6. Refer to Appendix D for DC Offset de-rating curves.

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Figure 5: P2 Responsivity
Responsivity[DN/(nJ/cm)]
2
Wavelength (nm)
10µm pixels
7µm pixels
0
4
1000
800600400 500 700 900
8
12
20
24
16
Responsivity, Nominal Gain

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!
2
Camera Hardware
Interface
2.1 Installation Overview
In order to set up your camera, you should take these steps:
1. Connect Cam era Link™ cables from cam era to frame grabber.
2. Connect power.
You must also set up the other components of your system, including light sources, frame
grabbers, camera mounts, heat sinks, host computers, optics, encoders, and so on.
2.2 Input / Output
+12V to +15V and Ground
C
a
m
e
r
a
L
i
n
k
™
(
2
a
n
d
4
T
a
p
m
o
d
e
l
s
)
C
a
m
e
r
a
L
i
n
k
™
(
4
T
a
p
m
o
d
e
l
o
n
l
y
)
Diagnostic LED (See section 3.18)
WARNING: It is extremely important that you apply the appropriate voltages to your
camera. Incorrect voltages will damage the camera. See section 2.4 for more details.

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2.3 Connectors, Pinouts, and Cables
The camera uses a high-density 26-pin MDR26 connector for Camera Link control signals,
data signals, and serial communications, and a 6-pin Hirose connector for power.
Table 3: Camera Link Medium and Full Configuration
Medium and Full Configurations
Up to an additional 2 Channel Link Chips
Camera
Connector
Right Angle
Frame
Grabber
Channel
Link Signal
Cable Name
1
1
inner shield
Inner Shield
14
14
inner shield
Inner Shield
2
25
Y0-
PAIR1-
15
12
Y0+
PAIR1+
3
24
Y1-
PAIR2-
16
11
Y1+
PAIR2+
4
23
Y2-
PAIR3-
17
10
Y2+
PAIR3+
5
22
Yclk-
PAIR4-
18
9
Yclk+
PAIR4+
6
21
Y3-
PAIR5-
19
8
Y3+
PAIR5+
7
20
100 ohm
PAIR6+
20
7
terminated
PAIR6-
8
19
Z0-
PAIR7-
21
6
Z0+
PAIR7+
9
18
Z1-
PAIR8-
22
5
Z1+
PAIR8+
10
17
Z2-
PAIR9+
23
4
Z2+
PAIR9-
11
16
Zclk-
PAIR10-
24
3
Zclk+
PAIR10+
12
15
Z3-
PAIR11+
25
2
Z3+
PAIR11-
13
13
inner shield
Inner Shield
26
26
inner shield
Inner Shield
*Exterior Overshield is connected to the shells of the connectors on both ends.
**3M part 14X26-SZLB-XXX-0LC is a complete cable assembly, including connectors.
Base, Medium, and Full Configuration
Medium and Full Configuration Only
MDR26Female
1
14
13
26
MatingPart :3M334-31series
Cable: 3M14X26-SZLB-XXX-0LC **

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Table 4: Camera Link Base Configuration
Base Configuration
One Channel Link Chip + Camera Control +Serial
Communication
Camera Connector
Right Angle
Frame Grabber
Channel Link
Signal
1
1
inner shield
14
14
inner shield
2
25
X0-
15
12
X0+
3
24
X1-
16
11
X1+
4
23
X2-
17
10
X2+
5
22
Xclk-
18
9
Xclk+
6
21
X3-
19
8
X3+
7
20
SerTC+
20
7
SerTC-
8
19
SerTFG-
21
6
SerTFG+
9
18
CC1-
22
5
CC1+
10
17
CC2+
23
4
CC2-
11
16
CC3-
24
3
CC3+
12
15
CC4+
25
2
CC4-
13
13
inner shield
26
26
inner shield
Unused pairs should be terminated in 100 ohms at both ends of the cable.
Table 5: Camera Control Configuration
Signal
Configuration
Pin
CC1
EXSYNC
9, 22
CC2
PRIN
10, 23
CC3
Spare
11, 24
CC4
Spare
12, 25
See Appendix B for the complete Camera Link configuration table, and refer to the
Knowledge Center page on the Teledyne DALSA Web site
(www.teledynedalsa.com/ mv/ knowledge/ appnotes.aspx) for the official Camera Link
documents.

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!
Hirose6-pinCircularMale
5
4
6
2
3
1
MatingPart:HIROSE
HR10A-7P-6S
Pin
Description
Pin
Description
1
+12V to +15V
4
GND
2
+12V to +15V
5
GND
3
+12V to +15V
6
GND
2.4 Power Supplies
The camera requires a single voltage input (+12V to +15V). The camera meets all
performance specifications using standard switching power supplies, although well-
regulated linear supplies provide optimum performance. See the Performance
Specifications for current requirements.
When setting up the camera’s power su p plies follow these gu idelines:
•Protect the camera with a fast-blow fuse between power supply and camera.
•Do not use the shield on a multi-conductor cable for ground.
•Keep leads as short as possible to reduce voltage drop.
See section 1.3 for power requirements.
WARNING: It is extremely important that you apply the appropriate voltages to your camera.
Incorrect voltages will damage the camera. Protect the camera with a fast-blow fuse between
power supply and camera.
Visit http:/ / vfm.dalsa.com for a list of companies that make power supplies that meet
the camera’s requirements. The companies listed should not be considered the only
choices. Many high quality supplies are available from other vendors. We assume no
responsibility for the use of these supplies.
2.5 Control Inputs, Camera Link
The camera accepts control inputs through the Camera Link MDR26F connector.
All inputs are optional. The camera ships in exposure mode 2 and with a 5 kHz line rate. All
Camera Control (CCx) signals are in a logic HIGH state.
Line rate can be set internally using the serial interface. Power-on rate is always 9600
baud. Data rate for the 40MHz model is always 40MHz. Data rate for the 30MHz model is
always 30MHz.
The external control signals, EXSYNC and PRIN, are optional and enabled through the
serial interface.
PRIN
PRIN is an optional input signal used for exposure control (PRIN).
PRIN
Indicates
High
Integration
Low
Pixel reset
IMPORTANT:
This camera uses the
falling edge of EXSYNC
to trigger line readout,
unlike previous DALSA
cameras, which used the
rising edg e.

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EXSYNC (Triggers Line Readout)
EXSYNC is an optional input signal that can be used to trigger the line readout rate. This
camera uses the falling edge of EXSYNC to trigger line readout.
Note: EXSYNC shou ld not be clocked faster than the cam era’s specified maximum line
rate. The camera ignores the EXSYNC pulse until it has completed reading the last line
out.
2.6 Data Bus, Camera Link
These signals indicate when data is valid, allowing you to clock the data from the camera
to your acquisition system. These signals are part of the Camera Link configuration and
you should refer to the Camera Link Implementation Road Map, available from the
Knowledge Center page on the Teledyne DALSA website
(www.teledynedalsa.com/ mv/ knowledge/ appnotes.aspx) for the standard location of
these signals:
Clocking Signal
Indicates
LVAL (high)
Outputting valid line
DVAL (high)
Valid data
STROBE (rising edge)
Valid data
IMPORTANT: This cam era’s d ata should be sampled on the rising edge of STROBE.
Digital Data
The camera digitizes internally to 10 bits and outputs either all 10 bits or the most
significant 8 bits in LVDS format on the Camera Link connector.
Note: Due to flat-field correction calculations, certain digital numbers will be unavailable
when outputting 10 bits with flat-field correction enabled (i.e. you will experience
missing codes).

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Test Pattern Pixels and End-of-line Sequence
To facilitate system-level debugging and verification of data path integrity, the camera
can generate a test pattern. The test pattern is a ramp from 0 to 255DN, then starts at 0
again. Use the test pattern to verify the proper timing and connections between the
camera and the frame grabber.
To alleviate post-processing, Piranha 2 offers an end-of-line sequence that provides basic
calculations including "line counter", "line average", "pixels above threshold", "pixels
below threshold", and "derivative line sum". These basic calculations are the center of
most automatic gain control (AGC) algorithms.
To further aid in debugging and cable/ data path integrity, the first six bits of the output
of the end-of-line sequence are "aa", "55", "aa". Refer to the table below.
Location
Value
Description
1
A’s
By ensuring these values consistently toggle
between "aa" and "55", you can verify cabling
(i.e. no stuck bits)
2
5’s
3
A’s
4
4 bit counter LSB justified
Counter increments by 1. Use this value to
verify that every line is output
5
Line sum LSB
Use these values to help calculate line
average
6
Line sum MID
7
Line sum MSB
8
0
9
Pixels above threshold LSB
Monitor these values (either above or below
threshold) and adjust camera gain to keep
these values relatively constant. This
provides a basis for automatic gain control
(AGC)
10
Pixels above threshold
MSB
11
Pixels below threshold LSB
12
Pixels below threshold
MSB
13
Derivative line sum LSB
Use these values to focus the camera.
Generally, the greater the sum the greater the
image contrast
14
Derivative line sum Mid
15
Derivative line sum MSB
16
0
For information
on the test pattern
and end of line
sequence
commands, see
section 3.17
Generating Test
Patterns.

19 Piranha 2 User’s Manual
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2.7 Timing
Figure 6. Piranha 2 Overview Timing Showing Input and Output Relationships
Figure 7. Piranha 2 Fixed (Programmed) Integration Timing with External EXSYNC

20 Piranha 2 User’s Manual
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Table 6: Piranha 2 40MHz Timing (Fixed Integration Mode)
Symbol
Definition
Min (ns)
Typ
(ns)
Max
(ns)
twSYNC
The minimum low width of the EXSYNC
pulse when not in SMART EXSYNC
mode.
100
twSYNC(SMART)*
The minimum low width of the EXSYNC
pulse when in SMART EXSYNC modes to
guarantee the photosites are reset.
2,000
twSYNC_INT
The minimum width of the high pulse
w hen the ―SMART EXSYN C‖ feature is
turned off
100
twSYNC_INT
(SMART) *
Is the integration time when the ―SMART
EXSYNC‖ feature is available and turned
on. Note that the minimum time is
necessary to guarantee proper operation.
2,000
tLINE PERIOD
(t LP)
The minimum and maximum line times
made up of tTransfer, tREADOUT plus
tOVERHEAD to meet specifications.
53,190 (8K4T)
106,382 (8K2T)
40,485 (6K4T)
80,645 (6K2T)
27,624 (4K4T)
54,054 (4K2T)
28,248 (2K2T)
15,313 (1K2T)
106
tTransfer
The time from the reception of the falling
edge of EXSYNC to the rising edge of
LVAL when pretrigger is set to zero.
Pretrigger reduces the number of clocks to
the rising ed ge of LVAL but d oesn’t
change the time to the first valid pixel. If
the fixed integration time mode of
operation is available and selected then
the integration time is added to the
specified value.
1,420 +/ -50
twFixed Int.
Fixed Integration Time mode of operation
for variable exsync frequency.
800
t LP –
2,000
tREADOUT
Is the number of pixels per tap times the
readout clock period. Pretrigger = 0.
51,200 (8K4T)
102,400 (8K2T)
38,400 (6K4T)
76,800 (6K2T)
25, 600 (4K4T)
51,200 (4K2T)
25,600 (2K2T)
12,800 (1K2T)
tOVERHEAD
Is the number of pixels that must elapse
after the falling edge of LVAL before the
EXSYNC signal can be asserted. This time
is used to clamp the internal analog
electronics
540+/ -50
thPR
Applies when the PRIN exposure control
feature is enabled . The PRIN signal must
be held a minimum time after the
EXSYNC falling edge to avoid losing the
integrated charge
0
twPR_LOW
Minimum Low time to assure complete
2,000 +/ - 200