SK7456CTO Instruction Manual

SK7456CTO Instruction Manual
SK7456CTO
Monochrome Line Scan Camera
7456 pixels, 4.7 µm x 4.7 µm, 40 / 20 MHz pixel frequency
Instruction Manual
08.2016
TO
6C
45
K7
Schäfter + Kirchhoff © 2016 • Line Scan Camera SK7456CTO Manual (08.2016) • shared_Titel_ML.indd (08.2016)
S
3
Sample Configuration
1 CCD line scan camera
SK7456CTO
mounted with
2 3 4 Mounting bracket SK5105
1
2
Clamping claws SK5102
Photo lens SK1.4/50-40
(integrated f­ocus/aperture adjustment)
4
Read the manual carefully before the initial start-up. For the contents table, refer to page 3.
The right to change the described specifications is retained as the products undergo continuous cycles of improvement.
Kieler Str. 212, 22525 Hamburg, Germany • Tel: +49 40 85 39 97-0 • Fax: +49 40 85 39 97-79 • [email protected] • www.SuKHamburg.de

How to Use this Instruction Manual
!
Please read the following sections of this Instruction Manual before unpacking,
assembly or use of the Line Camera System:
• The safety warnings on this page
• Introduction to the system, page 4
• Assembly and initial setup, page 6
Keep this Instruction Manual in a safe place for future reference.
Safety Warnings
Electricity Warning
Assembly and initial operation of the line scan camera must be carried out
under dry conditions.
Do not operate the camera if you notice any condensation or moisture in
order to avoid danger of a short circuit or static discharge!
For typical use in a scanning application, please consider the following
warnings:
Mechanical Warning
Ensure that the scanner axis is free to move and that no obstacles are in the way
– especially fingers!
Do not place any body parts in the way of moving parts!
Risk of High Power Lighting
Line Scan Camera SK7456CTO Manual (08.2016) • shared_Hinweise.indd (08.2016)
According to the application, laser or high power LED light sources might be
used. These can affect your eyesight temporarily or even cause permanent damage to the eyes or skin.
Do not look directly into the light beam!
2
SK7456CTO Instruction Manual (08.2016)
© 2016
Schäfter + Kirchhoff GmbH • Hamburg

Contents
How to Use this Instruction Manual.................................................................................. 2
Safety Warnings............................................................................................................... 2
Contents.......................................................................................................................... 3
1 Introducing the SK7456CTO Line Scan Camera........................................................... 4
1.1 Intended Purpose and Overview................................................................................................. 4
1.2 Computer System Requirements................................................................................................ 5
1.3 SK7456CTO Line Scan Camera - Specifications....................................................................... 5
2 Installation and Setup.................................................................................................. 6
2.1 Mechanical Installation: Mounting Options and Dimensions...................................................... 6
2.2 Electrical Installation: Connections and I/O Signals................................................................... 7
3 Interface and Camera Control...................................................................................... 8
3.1 Input/Output Signals and Control System.................................................................................. 8
3.2 Control Signals and Timing Diagram........................................................................................ 11
3.3 Camera Control with SKCLConfig Tool..................................................................................... 12
Set Commands
Request Commands
3.4 Synchronization of the Imaging Procedure and the Object Scan Velocity............................... 14
4 Adjustments for Optimum Scan Results..................................................................... 16
4.1 Lens Focussing......................................................................................................................... 16
4.2 Sensor Alignment...................................................................................................................... 17
4.3 Gain/Offset Adjustment............................................................................................................. 17
5 Sensor Information..................................................................................................... 18
Features
Circuit Diagram and Pin Names
Optical/Electrical Characteristics
Glossary......................................................................................................................... 22
CE-Conformity................................................................................................................ 23
Warranty........................................................................................................................ 23
Line Scan Camera SK7456CTO Manual (08.2016) • shared_Contens.indd (08.2016)
Accessories.................................................................................................................... 24
© 2016
Schäfter + Kirchhoff GmbH • Hamburg
SK7456CTO Instruction Manual (08.2016)
3
1 Introducing the SK7456CTO Line Scan Camera
1 Introducing the SK7456CTO Line Scan Camera
1.1 Intended Purpose and Overview
The SK line scan camera series is designed for a wide
range of vision and inspection applications in both
industrial and scientific environments. The SK7456CTO
is compliant with CameraLink Specification Rev 1.1.
Data acquisition requires that the grabber board conforms
to the CameraLinkTM standard. The grabber board
provides the Start-Of-Scan (SOS) signals and thereby
determines the exposure time and line frequency of the
camera.
CameraLink reads the camera specifications from configuration files. Prior to the iniatial start-up, the appropriate
camera specific file must be created for the grabber in
use.
Beyond, the configuration program SkCLConfig allows
the full parameterization of the camera settings, such as
gain, offset and pixel frequency, via the CameraLinkTM
serial port interface. SkCLConfig uses the clser*.dll driver
that is supplied with the CameraLink grabber board.
Normally, functions like Shading Correction, signal
modification with a look-up table (LUT) or the definition of
a region of interest (ROI) are implemented in the grabber
board. For special requirements these functions can be
made availabel within the camera, please contact the
Schäfter + Kirchhoff customer support where appropriate.
The camera is supplied precalibrated, with factory
settings for gain and offset. A readjustment is normally
not necessary.
The successful use of the line scan camera requires that
the complete optical system is properly set up, especially
the location of the illumination, the degree of focus of the
lens and the aperture setting. The most critical factor is
the perpendicular alignment of the sensor axis either with
the object to be measured or the direction of its relative
travel when scanned. For further guidance see section 4
Adjustments for Optimum Scan Results, p. 16.
For the development of custom applications use the
software development kits released from the grabber
board producers.
1 Line Scan Camera
2 Power Supply
2
1
4
3 Illumination
3
CameraLink
grabber for PC
PC
Line Scan Camera SK7456CTO Manual (08.2016) • shared_Introduction_CamLink.indd (08.2016)
4 Grabber with base
configuration
4
SK7456CTO Instruction Manual (08.2016)
© 2016
Schäfter + Kirchhoff GmbH • Hamburg
1 Introduction
1.2 Computer System Requirements
The SK7456CTO is compliant with CameraLink Specification Rev 1.1. It is operated in the "Base Configuration"
where the signals are carried over a single connector/
cable.
Power supply is provided by a separate power connector.
Along with the camera the Schäfter + Kirchhoff configuration program SkCLConfig is delivered. Provided a
clser**.dll driver by the grabber board manufacturer is
available, this program facilitates transferring the Set and
Request commands for camera configuration (see
page 13).
1.3 SK7456CTO Line Scan Camera - Specifications
Sensor category
Sensor type
TCD1711DG
Pixel number
7456
Pixel size (width x height)
Pixel spacing
1 Introduction
Active sensor length
4.7 x 4.7 µm2
4.7 µm
35.04 mm
Anti-blooming
-
Integration control
-
Shading correction
x
Threshold detection
x
Line synchronization modes
Frame synchronization
Pixel frequency
Maximum line frequency
Line Sync, Line Start, Exposure Start
x
40 / 20 MHz
5.2 kHz
Integration time
0.19 ... 20 ms
Dynamic range
1:1000 (rms)
Spectral range
400 ... 900 nm
Video signal
Line Scan Camera SK7456CTO Manual (08.2016) • shared_SystemRequirements_Specs_ML.indd (08.2016)
CCD Monochrome Sensor
monochrome 8/12 Bit digital
Interface
Camera Link
Voltage
+5V, +15V
Power consumption
2.2 W (= 5V · 320mA + 15V · 35mA)
Casing
Ø65 mm x 54 mm (Case type AC2)
Objective mount
Flange focal length
Weight
Operating temperature
© 2016
Schäfter + Kirchhoff GmbH • Hamburg
M40x0.75
19.5 mm
0.2 kg
+5 ... +45°C
SK7456CTO Instruction Manual (08.2016)
5
2 Installation and Setup
2 Installation and Setup
2.1 Mechanical Installation: Mounting Options and Dimensions
Mounting Options
Optics Handling
•
The best fixing point of the camera is the collar for
the mounting bracket SK5105 (available as an
accessory).
•
•
Four threaded holes M3 x 6.5 mm provide further
options for customized brackets.
If the camera and the optics are ordered as a kit,
the components are pre-assembled and shipped
as one unit. Keep the protective cap on the lens
until the mechanical installation is finished.
•
If you must expose the sensor or lens surface,
ensure the environment is as dust-free as possible.
•
Gently blow off loose particles using clean
compressed air.
•
The sensor and lens surfaces can be cleaned with
a soft tissue moistened with water or a water-based
glass cleaner.
•
The length and weight of the optics might be beyond
the capability of the standard mounting bracket
SK5105. For this purpose, a second mounting
bracket type SK5105-2 to hold the tube extension
ring(s) is more appropriate.
Casing type AC2
AC2
Lens mount:
Seat for bracket:
Flange focal length:
Ø65
M40x0.75
54
6 12.7
2.5
M3 (4x)
depth 6.5 mm
Ø42
41.7
Pixel 1
M40x0.75
Ø42 mm
FFL = 19.5 mm
CCD-Sensor
FFL
Mounting bracket SK5105
10 10
6
6.5
15
Ø 4.3
Hex socket head screw
DIN 912–M3x 12
Mounting system SK5105-2
for cameras with a tube
extension > 52 mm
6
3.5
25 10
Ø4.3 3.5
40
42
70
1/4’’20G
Ø
70
63
36
31.5
M4
6
SK7456CTO Instruction Manual (08.2016)
© 2016
Schäfter + Kirchhoff GmbH • Hamburg
Line Scan Camera SK7456CTO Manual (08.2016) • shared_Installation-Mechanic_Axx-BGx_ML.indd (08.2016)
M4
42
1/4’’ 20G
Clamping set SK5102
Set of 4 pcs. clamping claws
incl. screws
Ø
50
16.5 20
3.5
36
70
63
40
Clamping claw
Ø 3.3
50.3
41.7
M3
66
2 Installation and Setup
2.2 Electrical Installation: Connections and I/O Signals
•
For the SK7456CTO line scan camera data transfer and camera control is provded by the Camera Link
interface 2 . Use a control cable SK9018.... to connect the camera with the frame grabber card in the PC.
The maximum cable length is 10 m.
•
The operating power has to be supplied by an external source into socket 1
•
For any kind of synchronized operation the external trigger signal(s) have to be wired to the frame grabber in
addition. The camera can handle two trigger signals. These must be supplied on the CC1 and CC2-pins of
the Camera Link interface. For a detailed description of the interface see section 3 Interface and Camera
Control, p. 8.
1
5
6
7
12
4
11
10
8
9
Power +5V, +15V
4
3
6
1
5
3
2
2
1
2 Installation and Setup
2
Data Connector
Accessories (see also Accessories, p. 24):
Control cable SK9018...
for line scan cameras with CameraLink interface
26-pin shielded cable, both ends with mini-ribbon
connector (male 26-pin)
SK9018.xMM
MM = connector both ends male
cable length 3 / 5 m or
length according to choice, max. 10 m
Line Scan Camera SK7456CTO Manual (08.2016) • shared_Installation-Electric_CamLink_ML.indd (08.2016)
Pin
1
2
3
Signal
+15 V
+15 V
+5 V
Pin
4
5
6
Signal
+5 V
GND
GND
Total power: 2.2 W (= 5V · 320mA + 15V · 35mA)
1
2
Hirose series 10A, male 6-pin
Miniature Delta Ribbon,
female 26-pin (MDR-26)
Signal Pin Pin
Signal
GND
1
o o
14
GND
X0-
2
o o
15
X0+
X1-
3
o o
16
X1+
X2-
4
o o
17
X2+
Xclk-
5
o o
18
Xclk+
X3-
6
o o
19
X3+
SerTC+
7
o o
20
SerTC-
SerTFG-
8
o o
21
SerTFG+
CC1
9
o o
22
CC1+
CC2+
10
o o
23
CC2-
CC3-
11
o o
24
CC3+
CC4+
12
o o
25
CC4-
GND
13
o o
26
GND
Power Supply Unit PS051515
Input: 100-240 VAC, 0.8 A, 50/60 Hz, IEC 320 C14 coupler
(for IEC C13 power cord)
Output: +5V DC, 2.5 A / +15 V DC, 0.5 A / -15 V DC, 0.3 A
Cable length 1 m, with Lumberg connector KV60,
female 6-pin
(for power cable SK9015.x or SK9016.x)
Power Cable SK9015.xMF
Use this cable to feed external supply voltage into socket 1 .
Connectors:
Hirose plug HR10A, female 6 pin (camera side)
Lumberg SV60, male 6-pin connector (for supply voltage)
Length 1.5 m (standard) or 0.2 m
© 2016
Schäfter + Kirchhoff GmbH • Hamburg
SK7456CTO Instruction Manual (08.2016)
7
3 Interface and Camera Control
3 Interface and Camera Control
3.1 Input/Output Signals and Control System
Camera control
Signal Name
I/O
Type
Description
LINE SYNC A
I
RS644
CC1 -
Synchronization input (SOS)
Start Integration period in dual synchro modus
(only cameras with Integration Control)
LINE SYNC B
I
RS644
CC2 -
FRAME SYNC
I
RS644
CC3 -
Start acquisition of 2D area scan
I
RS644
CC4 -
not used
I = Input, O = Output, IO = Bidirectional, P = Power/Ground, NC = not connected
Video data
The differential LVDS signals X0-X3 and XCLK are reserved for the transmission of
high-speed video data from the camera to the grabber board. The video data is
transmitted using numerous serial channels simultaneously, according to the protocol
for the channel link chipset from National Semiconductor.
The CameraLink standard defines the names of the pixel signals, the description of
the signal level and the pin assignments and pinout of the chip.
Signal Name
I/O
Type
D[0–11]
O
RS644
Description
Pixel data, 00 = LSB, 11 = MSB
STROBE
O
RS644
Output data clock
Data are valid for a rising edge
LVAL
O
RS644
Line Valid, active High Signal
I = Input, O = Output, IO = Bidirectional, P = Power/Ground, NC = not connected
Warning: FVAL and DVAL are not used here as defined in the CameraLink standard.
FVAL is always set to the value = 1 (low). DVAL is always set to the value = 1 (high).
Bit
DS90CR285
Pin Name
Bit
DS90CR285
Pin Name
Bit
DS90CR285
Pin Name
Bit
DS90CR285
Pin Name
D0
Tx0
D8
Tx7
NC
Tx15
STROBE
TxCLK
LVAL
Tx24
D1
Tx1
D9
Tx8
NC
Tx16
D2
Tx2
D10
Tx9
NC
Tx17
D3
Tx3
D11
Tx12
NC
Tx18
D4
Tx4
NC
Tx10
NC
Tx19
D5
Tx6
NC
Tx11
NC
Tx20
D6
Tx27
NC
Tx13
NC
Tx21
D7
Tx5
NC
Tx14
NC
Tx22
Bit
DS90CR285
Pin Name
Bit
DS90CR285
Pin Name
Bit
DS90CR285
Pin Name
Bit
DS90CR285
Pin Name
D0
Tx0
NC
Tx7
NC
Tx15
STROBE
TxCLK
D1
Tx1
NC
Tx8
NC
Tx16
LVAL
Tx24
D2
Tx2
NC
Tx9
NC
Tx17
D3
Tx3
NC
Tx12
NC
Tx18
D4
Tx4
NC
Tx10
NC
Tx19
D5
Tx6
NC
Tx11
NC
Tx20
D6
Tx27
NC
Tx13
NC
Tx21
D7
Tx5
NC
Tx14
NC
Tx22
Bit allocation 8-bit data: D[0-7], Serial command: F8
The bit allocation conforms to the CameraLink Standard basic configuration.
8
SK7456CTO Instruction Manual (08.2016)
© 2016
Schäfter + Kirchhoff GmbH • Hamburg
Line Scan Camera SK7456CTO Manual (08.2016) • shared_Interface_CamLink_ML.indd (08.2016)
Bit allocation 12-bit data: D[0-11], Serial command: F12
3 Interface and Camera Control
Serial communication
Signal Name
I/O
Type
Description
SerTFG
O
RS644
Differential pair for serial communications to
the grabber board
SerTC
I
RS644
Differential pair for serial communications from
the grabber board
Line Scan Camera SK7456CTO Manual (08.2016) • shared_Interface_CamLink_ML.indd (08.2016)
The CameraLink interface supports two LVDS signal pairs for communication
between the camera and grabber board, which conform with the RS232 protocol for
asynchronous communication:
– full duplex, no handshake
– 9600 baud, 8-bit, no parity bit, 1 stop bit.
Block Diagram of Camera Link Base Configuration
© 2016
Schäfter + Kirchhoff GmbH • Hamburg
SK7456CTO Instruction Manual (08.2016)
9
3 Interface and Camera Control
~
~
CCD
pixel clock
Clock
Select
Exposure
Time
Oscillator
Restart
to
Camera Link
Interface
M4
Advanced
Sync Control
SOS
discharge
CC1
SOS in
SyC 2
CC2
M3
SynC 3...7
Pixel
Counter
DVAL
M0
M1
M3
M4
Sync
Divider
trigger
SynC A
SynC B
Sync
Select
SyC 0,1
pixel
adress
video
video
AD
Converter
Shading
Correction
Region
of Interest (ROI)
Look Up
Table
(LUT)
D[0-11] (monochrome cameras)
LVAL
pixel clock
R[0-7], G[0-7], B[0-7] (RGB cameras)
Output
Format
Select
CCLK
Port A, B, C
Camera Link
Base
Line Scan Camera SK7456CTO Manual (08.2016) • shared_Interface_CamLink_ML.indd (08.2016)
Logical Diagram of the Camera Control System
10
SK7456CTO Instruction Manual (08.2016)
© 2016
Schäfter + Kirchhoff GmbH • Hamburg
3 Interface and Camera Control
3.2 Control Signals and Timing Diagram
Thus, the frequency of the clock signal determines the
speed at which the charges of the individual pixels of the
line sensor appear in the camera video output. At each
positive edge, the accumulated charges of the subsequent pixels are released as video output.
The control signals needed to run the CCD line scan
camera are "Clock" (CCLK) and "Start Of Scan" (SOS).
The clock signal is generated internally by a programmable oscillator.
The SOS can be initiated internally by adjusting the
Exposure Time or externally by the grabber board. For
internal control, the camera must be set in the 'Free Run'
mode by using command 'M0'. When the SOS signal is
generated by the grabber board then the camera must
be set to the 'external Trigger CC1' mode using 'M3'.
The SK7456CTO camera requires 7636 clock pulses for
a line scan to be read out completely. This corresponds
to the number of pixels per line plus several extra cycles
prior and past the charge acquisition.
Accordingly, the line frequency is limited to 1/7636 part
of the clock freqeuncy. Lower line frequency values can
be used without restriction. The minimum SOS pulse
length is 30 ns.
3 Interface and Camera Control
The frequency of the 'SOS' signal determines the number
of lines that are read per second (= line frequency). On
each rising edge of this signal, the accumulated charges
within the sensor are transferred to the analog transport
registers in parallel with the sensor line information.
Input
SOS
CC1
174
Cycles
174Clock
Clock
Cycles
7456
Cycles
7456Clock
Clock
Cycles
Clock Cycles
66 Clock
Cycles
174 Clock Cycles
7456 Clock Cycles
6 Clock Cycles
≥ 30 ns
CCLK
STROBE
LVAL
D[0-11]
15 ns
o
o
i
1
2
3
7454
7455
7456
i
o
o
2
3
7454
7455
7455
7456
i
o
o
15
ns
15 ns
o
i 1
o
Video
intern
for
odd and
even
Line Scan Camera SK7456CTO Manual (08.2016) • SK7456CTO_CameraControl(3d)_CamLink_CtrlSignals-Timing.indd (08.2016)
i
Output
© 2016
Schäfter + Kirchhoff GmbH • Hamburg
i
i
1
2
i
2
i
1 3
3
4
4
o
o
o
o
o
o
o
7456
i
i = isolation pixels,
o
7455
7456
o = overclocking
SK7456CTO Instruction Manual (08.2016)
11
3 Interface and Camera Control
3.3 Camera Control with SKCLConfig Tool
The software requires that the c
­ lser***.dll supplied with
the Camera­Link grabber board is installed.
request commands. All set and request commands are
listed in the tables below.
The most important camera functions can be set using
serial commands, by using either the software from the
grabber manufacturer or by using the configuration
program SkCLConfig tool from Schäfter+Kirchhoff.
The parameter settings are stored in the non-volatile flash
memory of the camera and are available after a rapid
start-up, even after a complete shut down or loss of
power.
SkCLConfig provides the direct adjustment of line scan
camera parameters, such as gain, offset, and pi­
­
xel
frequency, via the serial channel of the CameraLink
interface.
On startup, the camera declares information about type,
revision and serial number. If the camera type field is
empty then switch off the camera, check the connections
and restart.
3 Interface and Camera Control
Similarly, current parameters, as well as specific product
information, can be read from the camera using the
Line Scan Camera SK7456CTO Manual (08.2016) • SK7456CTO_CameraControl(4)_ByCommands.indd (08.2016)
Dialog for Gain and Offset Adjustment and Camera Control Command Input
12
SK7456CTO Instruction Manual (08.2016)
© 2016
Schäfter + Kirchhoff GmbH • Hamburg
3 Interface and Camera Control
Set Commands
Request Commands
Set Operation
Goooo<CR>
Boooo<CR>
Description
Gain 1 setting 0-24 dB
Gain 2 setting 0-24 dB
Request
K<CR>
R<CR>
S<CR>
Return
Oppp<CR>
Pppp<CR>
Offset 1 setting
Offset 2 setting
I1<CR>
I2<CR>
I3<CR>
I4<CR>
VCC: yyyyy
VDD: yyyyy
moo: yyyyy
CLo: yyyyy
F8<CR>
F10<CR>
F12<CR>
F16<CR>
output format:
output format:
output format:
output format:
(double Tab)
I5<CR>
CHi: yyyyy
C20<CR>
C40<CR>
camera clock: 20 MHz data rate
camera clock: 40 MHz data rate
I6<CR>
I7<CR>
I8<CR>
I9<CR>
Ga1: yyyyy
Ga2: yyyyy
Of1: yyyyy
Of2: yyyyy
T0<CR>
T1<CR>
T2<CR>
T3<CR>
T4<CR>
T5<CR>
T6<CR>
Test pattern off / SCM off
Test pattern on (turns off with power off)
Shading Correction on
auto program Shading Corr. / SCM on
copy Flash Memory 1 to SCM
save SCM to Flash Memory 1
Video out = SCM data
I19<CR>
I20<CR>
Tab: yyyyy
CLK: yyyyy
I21<CR>
ODF: yyyyy
M0<CR>
M2<CR>
M3<CR>
free run with selected line rate
free run with maximum line rate
extern SOS CC1-input and Integration
control CC1 or CC2-input
I22<CR>
I23<CR>
TRM: yyyyy
SCO: yyyyy
I24<CR>
I25<CR>
Exp: yyyyy
miX: yyyyy
Axxxx<CR>
Dxxxx<CR>
SCM address (xxxx = 0-7455)
SCM data (xxxx = 0-4095) and increment
SCM address
I26<CR>
I27<CR>
LCK: yyyyy
maZ: yyyyy
Wyyyyy<CR>
line clock frequency
(yyyyy = 50-6535 Hz)
I32CR>
Tmp: yyyyy
Xyyyyy<CR>
exposure time (yyyyy = 153-20000) (µs)
SNES<CR>
SCOG<CR>
enable NES (no EEPROM save)
enable COG (coupling of gain1-gain2)
RNES<CR>
RCOG<CR>
RESET<CR>
disable NES (no EEPROM save)
disable COG (coupling of gain1-gain2)
reset Memory to manufacturer default
8 bit output data
10 bit output data
12 bit output data
2 x 8 bit output data
SK7456CTO
Rev2.50
SNr00163
Description
returns SK type number
returns revision number
returns serial number
returns VCC (1=10mV)
returns VDD (1=10mV)
returns mode of operation
returns camera clock low
frequency (MHz)
returns camera clock high
frequency (MHz)
returns gain 1
returns gain 2
returns offset 1
returns offset 2
returns video channels
returns selected clock
frequency (MHz)
returns selected output data
format
returns selected trigger mode
returns shading correction on/
off
returns exposure time (µs)
returns minimum exposure
time (µs)
returns line frequency (Hz)
returns maximum line
frequency (Hz)
returns Video Board Temperature (1=1°C)
Line Scan Camera SK7456CTO Manual (08.2016) • SK7456CTO_CameraControl(4)_ByCommands.indd (08.2016)
Acknowledgement for all set commands:
0 = OK, 1 = not OK
SCM:
SOS:
Shading Correction Memory
Start of Scan
© 2016
Schäfter + Kirchhoff GmbH • Hamburg
Range of values:
oooo = 0 ... 1023
ppp
= 0 ... 255
xxxx
= 4 digits integer value as ASCII
yyyyy = 5 digits integer value as ASCII
SK7456CTO Instruction Manual (08.2016)
13
3 Interface and Camera Control
3.4 Synchronization of the Imaging Procedure and the Object Scan Velocity
•
A two-dimensional image is generated by moving either the object or the camera. The direction of the translation
movement must be orthogonal to the sensor axis of the CCD line scan camera.
•
To obtain a proportional image with the correct aspect ratio, a line-synchronous transport with the laterally
correct pixel assignment is required. The line frequency and the constant object velocity have to be
coordinated.
•
In cases of a variable object velocity or particularly high accuracy requirements then an external synchronization is necessary. The various synchronization modes are described below.
The optimum object scan velocity is calculated from:
S
WP ·fL
VO=
ß
CCD Sensor
3 Interface and Camera Control
Pixel #1
If the velocity of the object carrier is not adjustable
then the line frequency of the camera must be adjusted
to provide an image with the correct aspect ratio,
where:
VO ·ß
fL=
WP
Pixel #1
V0
Scan Object
FOV
WP / ß
VO
=
object scan velocity
WP
=
pixel width
f L
=
line frequency
S
=
sensor length
FOV
=
field of view
ß=magnification
=
S / FOV
Example 1:
Calculating the object scan velocity for a given field of view and line frequency:
= 4.7 µm
Line frequency
= 5.2 kHz
S= 35.04 mm
FOV= 60 mm
4.7 µm · 5.2 kHz
VO=
(35.04 mm / 60 mm)
=
42 mm/s
Example 2:
Calculating the line frequency for a given field of view and object scan velocity:
Pixel width
= 4.7 µm
Object scan velocity
= 40 mm/s
S= 35.04 mm
FOV= 60 mm
14
40 mm/s · (35.04 mm / 60 mm)
fL=
4.7 µm
=
5 kHz
SK7456CTO Instruction Manual (08.2016)
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Schäfter + Kirchhoff GmbH • Hamburg
Line Scan Camera SK7456CTO Manual (08.2016) • shared_CameraControl(3)_Sync_ML.indd (08.2016)
Pixel width
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Schäfter + Kirchhoff GmbH • Hamburg
SK7456CTO Instruction Manual (08.2016)
15
4 Adjustments for Optimum Scan Results
4 Adjustments for Optimum Scan Results
Prior to a scan, the following adjustments and parameter settings should be considered for optimum scan
signals:
•
Lens focussing
•
Integration time
•
Sensor alignment
•
•
Gain/Offset
•
Shading correction
Synchronization of the sensor exposure and
the object surface velocity, trigger mode
options.
A real time line signal facilitates the effective focussing of the line scan camera system, even for two-dimensional
measurement tasks. For determining the correct focus, the edge steepness at dark-bright transitions and the
modulation of the line scan signal are the most important factors.
•
Adjust the focus using a fully opened aperture to restrict the depth of field and to amplify the effects of focus
adjustments.
•
The signal amplitude may require trimming when using a fully opened aperture and this can achieved most readily
by shortening the integration time.
16
Out-of-focus:
Optimum focus:
• Low edge steepness
• Signal peaks are blurred
• High-frequency gray values with low
modulation
• Dark-bright transitions with steep edges
• Large modulation in the signal peaks
• High-frequency gray value variations
SK7456CTO Instruction Manual (08.2016)
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Schäfter + Kirchhoff GmbH • Hamburg
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4 Adjustments for Optimum Scan Results
4.1 Lens Focussing
4 Adjustments for Optimum Scan Results
4.2 Sensor Alignment
If you are operating with a linear illumination source, check the alignment of the illumination source and the sensor
prior to performing a shading correction, as rotating the line sensor results in asymmetric vignetting.
Sensor and optics aligned
Sensor and optics rotated in apposition
4.3 Gain/Offset Adjustment
Cameras are shipped prealigned with gain/offset factory settings. Open the "Gain/Offset Control" dialog to re-adjust
or customize these settings.
Gain/Offset Control dialog
The gain/offset dialog contains up to 6 sliders for altering gain and offset. The number of active sliders depends on
the individual number of adjustable gain/offset channels of the camera. When "Coupled Gain Channels" is ticked,
all channels are adjusted synchronously with one slider.
Enter commands for advanced software functions in the 'Camera Control' field (see page 13).
Line Scan Camera SK7456CTO Manual (08.2016) • SK7456CTO_CameraControl(2)_Adjustments-1.indd (08.2016)
Adjustment principle
1. Offset
2. Gain
To adjust the zero baseline of the video signal, totally
block the incident light and enter "00" (volts) for channel 1.
Illuminate the sensor with a slight overexposure in order
to identify the maximum clipping. Use the Gain slider "1"
to adjust the maximum output voltage.
For a two- or multi-channel sensor, minimize any differences between the channels by adjusting the other
Offset sliders.
A slight signal noise should be visible in the zero baseline.
For a two- or multi-channel sensor, minimize any differences between the channels by adjusting the other Gain
sliders.
For the full 8-bit resolution of the camera, the maximum
output voltage is set to 255 and for 12-bit is set to 4095.
2. Adjust channel 1 gain
and minimize difference
between channels
using Gain slider
1. Adjust channel 1 zero
level and minimize difference between channels
using Offset slider
Offset and gain adjustment for more than one gain/offset channel
© 2016
Schäfter + Kirchhoff GmbH • Hamburg
SK7456CTO Instruction Manual (08.2016)
17
5 Sensor Information
5 Sensor Information
Manufacturer: TOSHIBA Corporation
Type:
TCD1711DG
Data source: TOSHIBA CCD Linear Image Sensor CCD (Charge Coupled Device) TCD1711DG, 2004-01-30
Features
•
•
•
•
•
Number of Image Sensing Elements: 7450 elements
Image Sensing Element Size: 4.7 μm by 4.7 μm on 4.7 μm center
Photo Sensing Region: High sensitive and low voltage dark signal pn photodiode
Clock: 2-phase (5 V)
Package: 22-pin CERDIP package
Line Scan Camera SK7456CTO Manual (08.2016) • shared_Sensor_TCD1711DG.indd (08.2016)
Circuit Diagram and Pin Names
18
SK7456CTO Instruction Manual (08.2016)
© 2016
Schäfter + Kirchhoff GmbH • Hamburg
5 Sensor Information
Line Scan Camera SK7456CTO Manual (08.2016) • shared_Sensor_TCD1711DG.indd (08.2016)
Optical/Electrical Characteristics
© 2016
Schäfter + Kirchhoff GmbH • Hamburg
SK7456CTO Instruction Manual (08.2016)
19
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5 Sensor Information
20
SK7456CTO Instruction Manual (08.2016)
© 2016
Schäfter + Kirchhoff GmbH • Hamburg
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© 2016
Schäfter + Kirchhoff GmbH • Hamburg
SK7456CTO Instruction Manual (08.2016)
21

Glossary
Extended illumination of saturated pixels, which are not
able to accumulate further charge due to long exposure,
leads to charge overflow into adjacent pixels. This effect
is called blooming. Blooming causes a corruption of the
geometrical allocation of image and object in the line
signal. CCD line scan cameras with anti-blooming
sensors direct the abundant charge to a ”drain gate”.
Charge overflow into adjacent, less illuminated pixels is
prevented. Depending on pixel frequency and spectral
range, overexposure up to factor of 50 can thus be
handled.
ranging from 4 to 14 µm in size and spacing, for sensors
up to 56 mm in length and line scan frequencies up to
83 kHz.
During a scanning run, the effective resolution perpendicular to the sensor orientation is determined by the
velocity of the scan and by the  line frequency
Pixel frequency
The pixel frequency for an individual sensor is the rate of
charge transfer from pixel to pixel and its ultimate
conversion into a signal.
Exposure period
Region of Interest
is the illumination cycle of a line scan sensor. It is the 
integration time plus the additional time to complete the
read-out of the accumulated charges and the output
procedure. While the charges from a finished line scan
are being read out, the next line scan is b
­ eing exposed.
The exposure period is a function of the pixel number and
the  pixel frequency. The minimum exposure period of
a particular line scan camera determines the maximum
 line frequency that is declared in the specifications.
A freely programmable window (region of interest, ROI)
can be applied to the line sensor so that only the pixel
information within the ROI can reach the memory.
Integration control
Shading correction
Cameras with integration control are capable of curtailing
the  integration time within an  exposure period.
This performs an action equivalent to a shutter mechanism.
 Shading Correction, section 3.2
Integration time
The light-sensitive elements of the photoelectric sensor
accumulate the charge that is generated by the incident
light. The duration of this charge accumulation is called
the integration time. Longer integration times increase
the intensity of the line scan signal, assuming constant
illumination conditions. The complete read-out of
accumulated charges and output procedure determines
the minimum  exposure period.
Line frequency, line scan frequency
is the reciprocal value of the  exposure period. The
maximum line frequency is a key criterion for line scan
sensors as this is the limiting factor for the scan velocity.
Optical resolution
Two elements of a line scan camera determine the optical
resolution of the system: first, the pixel configuration of
the line sensor and, secondly, the optical resolution of the
lens. The worst value is the determining value. In a phased
set-up, both are within the same range.
The optical resolution of the line sensor is primarily determined by the number of pixels and secondarily by their
size and spacing, the inter-pixel distance. Currently
available line scan cameras have up to 12 000 pixels,
22
By only illuminating these ranges, data volume and data
processing is accelerated for both line and a
­ rea scan
acquisitions.
Constraint: the ROI memory allocation must be divisible
by 8.
SoI (Start of Integration)
In addition to  SoS, cameras with  Integration Control
function generate an internal SoI-signal that initiates the
integration period.
SoS (Start of Scan)
is an internally generated trigger signal for sequential
control of the camera, The signal is induced either by an
internal counter or by an external line synchronization
signal, depending on the selected line synchronization
mode.
 Synchronization
 Advanced Synchronization Control, section 4.2
Synchronization
To obtain a proportional image with the correct aspect
ratio, a line synchronous transport with the laterally
correct pixel assignment is required. The  Line
frequency and constant object velocity have to be
compatible with each other.
For more accurate requirements or with a variable object
velocity, external synchronization is necessary.
 Synchronization of the Imaging Procedure and the
Object Scan Velocity, section 3.2
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Schäfter + Kirchhoff GmbH • Hamburg
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Blooming

CE-Conformity
Warranty
The product complies with the following standards and
directives:
2014/30/EU
This manual has been prepared and reviewed as carefully
as possible but no warranty is given or implied for any
errors of fact or in interpretation that may arise. If an error
is suspected then the reader is kindly requested to inform
us for appropriate action.
The circuits, descriptions and tables may be subject to
and are not meant to infringe upon the rights of a third
party and are provided for informational purposes only.
The technical descriptions are general in nature and
apply only to an assembly group. A particular feature set,
as well as its suitability for a particular purpose, is not
guaranteed.
EMC Directive
DIN EN 61326-1:2013
Electrical equipment for measurement, control and
laboratory use – EMC requirements
Part 1: General requirements
Each product is subjected to a quality control process. If
a failure should occur then please contact the supplier or
Schäfter + Kirchhoff GmbH immediately. The warranty
period covers the 24 months from the delivery date. After
the warranty has expired, the manufacturer guarantees
an additional 6 months warranty for all repaired or substituted product components. Warranty does not apply to
any damage resulting from misuse, inappropriate modification or neglect. The warranty also expires if the product
is opened. The manufacturer is not liable for consequential damage. If a failure occurs during the warranty
period then the product will be replaced, calibrated or
repaired without further charge. Freight costs must be
paid by the sender. The manufacturer reserves the right
to exchange components of the product instead of
making a repair. If the failure results from misuse or
neglect then the user must pay for the repair. A cost
estimate can be provided beforehand.
Line Scan Camera SK7456CTO Manual (08.2016) • shared_CE-Conformity_Warranty_ML.indd (08.2016)
Copyright ©
Unless explicitly allowed, the duplication, distribution, sale or use of this document or its contents, for purposes
other than those intended, is forbidden. Repeated transgressions will lead to prosecution and demands for
compensation.
All rights of patent protection and registration or copyright of a product or its design lie with Schäfter+Kirchhoff.
Schäfter+Kirchhoff GmbH and the Schäfter+Kirchhoff logo are registered trademarks.
We reserve the right to improve or change specifications so that the system description and depictions in the
Instruction Manual may differ in detail from the system actually supplied. The Instruction Manual is not covered
by an update service.
Date of document publication: 18.08.2016
Schäfter+Kirchhoff GmbH
Kieler Straße 212
22525 Hamburg
Germany
© 2016
Schäfter + Kirchhoff GmbH • Hamburg
Tel.: +49 40 853 997-0
Fax: +49 40 853 997-10
Email: [email protected]
Internet: www.SuKHamburg.com
SK7456CTO Instruction Manual (08.2016)
23
Features
• Extended Trigger Functions
Direction of movement or slippage can be detected
by using two external synchronization signals.
• Window-Function
The line signal data to be transferred can be
restricted to a defined section of the line sensor.
• Shading Correction Memory (SCM) and
Look-Up Table (LUT) options The calibration data in the SCM automatically adjusts
the line signal data directly in the camera after each
exposure.
The LUT is a separate memory block that can also
be used for postprocessing the line signal data, such
as applying a Gamma function.
• The Gains or Offsets for all four AD-converter
channels can be adjusted simultaneously,
simplifying handling.
• Integrated Temperature Sensor
Accessories
DE
US
UK
Power supply unit PS051515
Control cable SK9018...
Input:
100-240 VAC, 0.8 A, 50/60 Hz
IEC 60320 C14 coupler (for IEC C13 power cord)
Output:
+5V DC, 2.5 A / +15 V DC, 0.5 A / -15 V DC, 0.3 A
Cable length:1 m, with Lumberg connector KV60, female 6-pin
26-pin shielded cable, both ends with mini-ribbon connector
(male 26-pin)
PS051515
MM = connector both ends male
Power cord IEC 60320 C13, 1.5 m, 10 A, 250 V AC
cable length 3 / 5 m or
PC150DE
length according to choice,
max. 10 m
SK9018.x-MM
Order Code
Order Code
DE = Europe / US = USA, Canada, Japan /
UK = United Kingdom
Order Code
Power cable SK9015.x
for GigE VisionTM, CameraLink and externally supplied USB 3
line scan cameras.
Shielded cable with Hirose plug HR10A, female 6-pin (camera
side), and Lumberg SV60, male 6-pin connector (power supply
unit side).
SK9015.x
Order Code
M1
cable length 0.2 / 1.5 m
Mounting Bracket SK5105
Order Code
SK5105
M3
10 10
For cameras with lens thread
size C-mount to M40x0.75
Mounting System SK5105-2
Order Code
SK5105 with clamping set
SK5102#
SK5105-2
6
6
M3
Ø 3.3
66
16.5 20
3.5
36
31.5
M4
3.5
50
36
6.5
70
25 10
Ø4.3 3.5
Axx
or
BGx .
Order Code
Attachment thread:
45
=
M45x0.75
40
=
M40x0.75
32
=
M32x0.75
C =
C-Mount 1"-32-TP
M39x1/26’’
L
Ø53
Extension rings L-Mount (M39x1/26" Leica)
attachment threads M39x1/26" male/female
ZR 10
Order Code
10 = Length 10 mm
15 = Length 15 mm
20 = Length 20 mm
50 = Length 50 mm
L
L=Length
Ø42 f8
Kieler Str. 212, 22525 Hamburg, Germany • Tel: +49 40 85 39 97-0 • Fax: +49 40 85 39 97-79 • [email protected] • www.SuKHamburg.de
Schäfter + Kirchhoff © 2016 • Line Scan Camera SK7456CTO Manual (08.2016) • shared_Accessories_ML.indd (08.2016)
M39x1/26’’
40
Lens Adapter F-Mount
AOC-F-... Ø53
70
63
42
M39x1/26’’
Ø
any rotation angle adjustable (V-groove)
attachement thread M40x0.75, male
FA22RL-40 Order Code
length L: 35 ... 45 mm
ZR
For camera configurations
with tube length > 55 mm
using extension rings ZR
for line scan cameras with case type
Focus adapter L-Mount (M39x1/26" Leica)
FA22R-40 Order Code
length L: 28 ... 38 mm
L
M40x0.75
FA2 Ø 4.3
A3
X
FA22-x
Order Code
42= M42 x 1
40= M40 x 0.75
39= M39 x 1/26"
32= M32 x 0.75
C= C-Mount
length L: 22 ... 32 mm
15
Focus adapter FA22...
M39x1/26’’
FA1 M4
42
1/4’’20G
Allen screw
DIN 912–M3x12
Ø
1/4’’ 20G
Order Code
SK5102
(set of 4 pcs.)
70
63
40
Clamp
50.3
41.7
MC1 Clamping Set SK5102
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