1060E-1409
LQ-201CL
RGB Color & NIR
4CMOS Line Scan Camera
Document Version:1.1
LQ-201CL_Ver.1.1_Dec2014
User's Manual
LQ-201CL
2
Notice
The material contained in this manual consists of information that is proprietary to JAI Ltd., Japan
and may only be used by the purchasers of the product. JAI Ltd., Japan makes no warranty for the
use of its product and assumes no responsibility for any errors which may appear or for damages
resulting from the use of the information contained herein. JAI Ltd., Japan reserves the right to
make changes without notice.
Company and product names mentioned in this manual are trademarks or registered trademarks of
their respective owners.
Warranty
For information about the warranty, please contact your factory representative.
Certifications
CE compliance
As defined by the Directive 2004/108/EC of the European Parliament and of the Council, EMC
(Electromagnetic compatibility), JAI Ltd., Japan declares that LQ-201CL complies with the following
provisions applying to its standards.
CISPR Pub.22 (EN55022) (Emission admissible value and measuring method)
CISPR Pub.24 (EN55024) (Immunity admissible value and measuring method)
IEC61000-4-2(Electrostatic discharge immunity test)
FCC
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions,
may cause harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment
off and on, the user is encouraged to try to correct the interference by one or more of the following
measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
- Consult the dealer or an experienced radio/TV technician for help.
Warning
Changes or modifications to this unit not expressly approved by the party
responsible for FCC compliance could void the user’s authority to operate the
equipment.
LQ-201CL
Supplement
The following statement is related to the regulation on “ Measures for the Administration
of the control of Pollution by Electronic Information Products “ , known as “ China RoHS “.
The table shows contained Hazardous Substances in this camera.
mark shows that the environment-frien dly u se period of containe d Hazard ous
Substances is 15 years.
嶷勣廣吭並㍻
嗤蕎嗤墾麗嵎賜圷殆兆各式根楚燕
功象嶄鯖繁酎慌才忽佚連恢匍何〆窮徨佚連恢瞳麟半陣崙砿尖一隈〇云恢瞳ゞ 嗤蕎嗤
墾麗嵎賜圷殆兆各式根楚燕 〃泌和
桟隠聞喘豚㍉
窮徨佚連恢瞳嶄根嗤議嗤蕎嗤墾麗嵎賜圷殆壓屎械聞喘議訳周和音氏窟伏翌
亶賜融延、窮徨佚連恢瞳喘薩聞喘乎窮徨佚連恢瞳音氏斤桟廠夛撹冢嶷麟半
賜斤児繁附、夏恢夛撹冢嶷鱒墾議豚㍉。
方忖仝15々葎豚㍉15定。
LQ-201CL
3
- Table of contents –
1. General ........................................................................................................ 6
2. Camera composition ........................................................................................ 6
3. Main features ................................................................................................. 7
4. Locations and functions .................................................................................... 8
4.1. Locations and functions ............................................................................... 8
4.2. Rear Panel ............................................................................................... 9
5. Connectors and pin assignment .......................................................................... 10
5.1. 12-Pin Connector ...................................................................................... 10
5.1.1 Pin assignment ..................................................................................... 10
5.1.2 Conformable connector (Example) ............................................................. 10
5.2. Digital Output / Interface Connectors for Camera LinkTM ...................................... 10
5.2.1 Pin assignment ..................................................................................... 10
5.2.2 Conformable connector and cable assembly ................................................. 11
5.3.3 Camera Link Interface (Bit allocation) ........................................................ 11
5.3.4 Camera link output port ......................................................................... 13
5.3.5 Bit allocation of the output video .............................................................. 14
6. Functions and Operation .................................................................................. 14
6.1. Basic functions ......................................................................................... 14
6.2 Key functions ............................................................................................ 15
6.2.1 Line rate (Command LR) ......................................................................... 16
6.2.2 Electronic shutter (Exposure) (Command PER, PEG, PEB, PEIR) .......................... 16
6.2.3 External Trigger ................................................................................... 16
6.2.4 Serial communication ............................................................................ 16
6.2.3 EEN (Exposure Enable) function ................................................................ 17
6.2.4 White balance ..................................................................................... 17
6.2.5 Gain control ........................................................................................ 17
6.2.6 Black level .......................................................................................... 19
6.2.7 PRNU (Pixel Response Non-Uniformity ) correction ......................................... 19
6.2.8 DSNU (Dark Signal Non-Uniformity) correction ............................................... 20
6.2.10 Shading correction ................................................................................ 21
6.2.11 Lateral chromatic aberration ................................................................... 22
6.2.12 Aperture filter ..................................................................................... 25
6.2.13 Binning .............................................................................................. 25
6.2.14 Sub-sampling ....................................................................................... 25
6.2.15 Windowing .......................................................................................... 26
6.2.16 Test pattern generator ........................................................................... 26
6.3. Operation modes ...................................................................................... 27
6.3.1 Camera Default Settings ......................................................................... 27
6.3.2 No-Shutter mode with Internal Trigger ........................................................ 28
6.3.3 No-Shutter mode with external trigger ....................................................... 30
6.3.4 Shutter-Select mode with internal trigger .................................................... 32
6.3.5 Shutter-Select mode with external trigger ................................................... 35
6.3.6 Pulse Width Control (PWC) mode .............................................................. 37
6.3.7 Compatibility of trigger modes and functions ................................................ 39
6.3.8 Trigger modes and auto white balance modes matrix table ............................... 39
7. Functions listed alphabetically by command acronyms .............................................. 40
7.1 Command AHRS – Request Status After One-Push AWB......................................... 40
7.2 Command AL – Automatic Line Rate Reference Level .......................................... 40
7.3 Command AR – Automatic Line Rate Setting ..................................................... 40
7.4 Command ARST – Auto Reset Mode ................................................................ 40
7.5 Command AH - Activate One-Push Auto White Balance (AWB) - Shutter .................... 42
7.6 Command AW – Activate One-Push Auto White Balance (AWB) - Gain ....................... 43
7.7 Command BA – Bit Allocation ....................................................................... 43
7.8 Command BI – Binning ................................................................................ 43
LQ-201CL
4
7.9 Command BL – Master Black Level ................................................................. 43
7.10 Commands BLR, BLB and BLIR – Black Level Red, Blue and NIR............................... 44
7.11 Command BLM - Black Level Mode ............................................................... 44
7.12 Command CABR, CABB and CABIR Chromatic aberration Red, Blue NIR ..................... 44
7.13 Command EI – Interlocked R, G, B & NIR Exposure .............................................. 44
7.14 Command GA – Master Gain Level .................................................................. 45
7.15 Commands GAR, GAB and GAIR – Gain Level Red, Blue and NIR. ............................. 45
7.16 Command GM - Gain Mode ...................................................................... 45
7.17 Command HPFC – Aperture Control ................................................................ 45
7.18 Command LR - Line Rate (Scan Rate) ............................................................. 45
7.19 Command MAV – Chromatic Aberration Control ................................................. 46
7.20 Command MAVCG – Chromatic Aberration Select ............................................... 46
7.21. Command NR - Noise Reduction ............................................................. 46
7.22 Command OS1,2,3,4,5,6 – Camera Link Video Output Select ................................. 46
7.22 Command PBC – Enable Pixel Black (FPN) Correction .......................................... 46
7.23 Command PBR – Run Pixel Black Correction and Store to User Area .......................... 47
7.24 Command PBS - Request Status After Pixel Black Correction ............................... 47
7.25 Command PER,PEG,PEB and PEIR – Programmable Exposure for R,G,B,and NIR ............ 47
7.26 Command PGC – Select pixel gain correction mode .............................................. 47
7.27 Command PGR – Pixel Gain Correction and Store in User Area................................. 48
7.28 Command PGS - Request Status After Pixel Gain Correction ............................... 48
7.29 Command SCB – Select cable ....................................................................... 48
7.30 Command SDC – Select Shading Correction Mode ................................................. 48
7.31 Command SDR – Run Shading Correction and store to user area ............................. 48
7.32 Command SDS – Request Status After Executing Shading Correction Command ........... 49
7.33 Command SRO – Sensor Read Out .................................................................. 49
7.34 Command SGR, SGG, SGB, SGIR – Sensor Gain Set R, G, B and NIR ........................ 49
7.35 Command TG – Trigger Origin ....................................................................... 49
7.36 Command TI – Trigger Input ......................................................................... 49
7.37 Command TP – Trigger Polarity ..................................................................... 49
7.38 Command TR – Trigger Mode ........................................................................ 50
7.39 Command TS – Test Pattern ......................................................................... 50
7.40 Command WB – White Balance ..................................................................... 50
8. Serial communication and command list ............................................................... 51
8.1. Serial communication ................................................................................. 51
8.2. Command list .......................................................................................... 52
9. Camera Control Tool for LQ-201CL ...................................................................... 59
9.1. Software Install ........................................................................................ 59
9.2. Open the Control Tool ................................................................................ 59
9.3. Connect a camera ..................................................................................... 59
9.4. Camera control window .............................................................................. 60
9.5 Menus ...................................................................................................... 60
9.5.1 File menu ........................................................................................... 60
9.5.2 Settings menu ...................................................................................... 61
9.5.3 Line Correction menu ............................................................................ 61
9.5.4 Help menu .......................................................................................... 62
10. External appearance and Dimensions .................................................................. 63
11. Specifications ............................................................................................. 65
11.1 Typical data ............................................................................................... 65
11.2 Camera Spectral sensitivity ......................................................................... 67
Appendix ............................................................................................................ 68
1. Precautions ............................................................................................... 68
2. Typical Sensor Characteristics ......................................................................... 68
3. Caution when mounting a lens on the camera ...................................................... 68
4. Caution when mounting the camera.................................................................. 69
5. Exportation ............................................................................................... 69
6. References ................................................................................................ 69
LQ-201CL
5
Change history ..................................................................................................... 70
User's Record ....................................................................................................... 71
LQ-201CL
6
1. General
The LQ-201CL is a 4CMOS line scan camera using four 2048 pixel line sensors mounted on a prism,
for the R, G, B and NIR channels. It operates with an 84 MHz pixel clock, resulting in a maximum
line rate of 33,014 lines per second.
The camera outputs digital data in 4 x 8 bits or 4 x 10 bits format via Camera Link. The camera is
configured by software through the serial communication port of the Camera Link interface, or via
RS-232C through a 12-pin connector.
The camera accepts an M52 mount or F-mount lens, depending on the version selected.
The LQ-201CL is a suitable camera for various applications such as inspection of fruits,
vegetables ,circuits boards or electronic/mechanical parts, as the NIR image can catch scratches or
blemishes on object surfaces which the RGB color image cannot find.
The latest version of the operation manual can be downloaded from www.jai.com .
The latest camera control tool for the LQ-201CL can be downloaded from www.jai.com .
For camera revision history, please contact your local JAI distributor
2. Camera composition
Two camera versions are available
LQ-201CL-M52 M52 mount
LQ-201CL-F F mount
The standard camera composition is as follows.
Camera body 1
Sensor protection cap 1
Dear Customer (sheet) 1
The following optional accessories are available.
Power supply unit
PD-12 series
LQ-201CL
7
3. Main features
4CMOS line scan camera with 2048 pixel resolution
Dichroic beam splitter prism to separate R,G,B and NIR wavelengths
33,014 lines per second scan rate
84 MHz pixel clock
4 x 8 bits or 4 x 10 bits output through Camera Link interface
PRNU and DSNU Flat-field correction
Individual gain control in the range of -4dB to +14dB with a fine gain control
Flat shading correction and color shading compensation
One-push auto white balance using gain control or shutter control
Binning function to increase sensitivity
Sub-sampling and windowing functions for faster line rate
Auto reset function
Noise reduction function
Test pattern generator(color bar, gray, white) for setup and trouble shooting
Electronic shutter (for selected modes)
Short ASCII commands set up via RS 232C or Camera Link
M52 mount and F mount versions
Field upgrade function by using exclusive update tool
LQ-201CL
8
4. Locations and functions
4.1. Locations and functions
Fig. 1 Location of external features
1 Lens mount M52 mount (*1)Note)
2 Camera Link connector 1 base connector (1) (*2)Note)
3 Camera Link connector 2 medium connector (2) (*2)Note)
4 12-pin Hirose connector DC +12, External trigger and RS-232C
5 DIP switch SW-1 ( refer to chapter 4.2 for the details)
6 Button For one-push auto white balance (Gain based)
7 LED indicator Power, trigger input and operation indications
8 Camera mounting holes 8 x M3, depth 5mm (*3) Note)
*1) Note: Rear protrusion on M52 mount lens must be less than 13mm.
F mount is also available. Rear protrusion for F mount lens is the same as M52 mount.
*2) Note: When a Camera LinkTM cable is connected to the camera, please do not excessively tighten
screws by using a driver. The Camera Link receptacle on the camera might be damaged.
For security, the strength to tighten screws is less than 0.291 Newton meter (Nm).
Tightening by hand is sufficient in order to achieve this.
*3) Note: The depth of mounting hole is 5 mm. If the longer screws than 5 mm are used, they may
damage the circuit board inside.
LQ-201CL
9
4.2. Rear Panel
Fig2. Rear panel
① LED
Green (Steady)
Operating, but not receiving external trigger input
Green (Flashing)
Operating and receiving external trigger input.
Note that the flashing frequency does not correspond to the frequency of the trigger
signal. The flashing does not occur in the No-shutter internal and Shutter-Select internal
modes.
Orange
Initializing and cannot operate
1) Initializing for approx. 800 ms
2) One-push auto white balance is engaged.
② DIP switch
SW-1 function
No
Function
Settings
ON
OFF
1
Serial communication
12-Pin
Camera Link (CC1)
2
Termination of External trigger
75Ω
TTL
Note: Factory default settings for both functions are “OFF”.
Fig.3 DIP switch
DIG ITAL I /O - 1
DIG ITAL I /O - 2
POW ER/
TRIG
W .B .
DC IN
/TRIG
S W1
①
②
OFF
ON
Serial
Communication
75 Ω
LQ-201CL
10
5. Connectors and pin assignment
5.1. 12-Pin Connector
5.1.1 Pin assignment
Type: HR10A-10R-12PB-01 (Male) or equivalent
Use the part number HR10A-10P-12S or equivalent for the cable side
Pin No.
Signal
Remarks
1
GND
2
DC in
+12V to +24V
3
GND
4
Reserved
Do not connect
5
GND
6
RxD in
RS-232C
7
TxD out
RS-232C
8
GND
9
XEEN out
10
Trigger in
11
DC in
+12V to +24V
12
GND
5.1.2 Conformable connector (Example)
No.
Manufacture
Type name
Note
Camera side
HIROSE
HR10A-10R-12PB(71)
Cable side
HIROSE
HR-10A-10P-12S
Plug
5.2. Digital Output / Interface Connectors for Camera LinkTM
5.2.1 Pin assignment
Type: 26P MRD Connector 3M 10226-1A10PL
Fig. 5 Camera Link connector
This camera can be used with all Camera Link products that comply with the AIA Camera Link
standard. Cables, transmission systems and frame grabbers/acquisition boards that do not comply
with the Camera Link standard may work with this camera, but JAI Camera Solutions cannot be
held responsible for loss in performance or damage of equipment, including the camera.
Connector 1 (4 x 8-Bit, 4 x 10-Bit)
Pin No
In/Out
Name
Note
1,14 Shield
GND
2(-),15(+)
O
TxOUT0
Data out
3(-),16(+)
O
TxOUT1
4(-),17(+)
O
TxOUT2
5(-),18(+)
O
TxClk
Clock for CL
6(-),19(+)
O
TxOUT3
Data out
7(+),20(-)
I
SerTC (RxD)
LVDS Serial Control
8(-),21(+)
O
SerTFG (TxD)
9(-),22(+)
I
CC1 (Trigger)
Trigger
10(+),23(-)
I
CC2 (Reserved)
11,24 N.C
12,25 N.C
13,26
Shield
GND
Fig. 4 12-pin Hirose connector
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11
Connector 2 ( Used only for 4 x 10-Bit output)
Pin No
In/Out
Name
Note
1,14 Shield
GND
2(-),15(+)
O
TxOUT0
Data out
3(-),16(+)
O
TxOUT1
4(-),17(+)
O
TxOUT2
5(-),18(+)
O
TxClk
Clock for CL
6(-),19(+)
O
TxOUT3
Data out
7(+),20(-)
N.C
8(-),21(+)
N.C
9(-),22(+)
N.C
10(+),23(-)
N.C
11,24 N.C
12,25 N.C
13,26
Shield
GND
5.2.2 Conformable connector and cable assembly
No.
Manufacture
Type name
Note
Camera side
3M
10226-1A10PL
Cable
assembly
3M
14B26-SZLB-xxx-
0LC
Standard
Note1: In the above table, xxx shows cable length. Applicable length is 0.5m to 10m.
Note2: If the used cable does not comply with Camera Link standards or it is 14B26-SZ3B-
xxx-03C (Thin diameter type) or 14B26-SZ3B-xxx-04C (High flex type), the cable
length for transmission is limited.
5.3.3 Camera Link Interface (Bit allocation)
The LQ-201CL follows the Camera Link standard in all respects.
Out1_D9～Out1_D0 : Out1_Camera Data (Out1_D9=MSB, Out1_D0=LSB)
Out2_D9～Out2_D0 : Out2_Camera Data (Out2_D9=MSB, Out2_D0=LSB)
Out3_D9～Out3_D0 : Out3_Camera Data (Out3_D9=MSB, Out3_D0=LSB)
Out4_D9～Out3_D0 : Out4_Camera Data (Out4_D9=MSB, Out4_D0=LSB)
Out5_D7 ～Out3_D0 : Out5_Camera Data (Out5_D7=MSB, Out5_D0=LSB)
Out6_D7 ～Out3_D0 : Out6_Camera Data (Out6_D7=MSB, Out6_D0=LSB)
× : Don’t Care
8-
bitx6output
10-
bitx4output
Connector
Pin Name
Port A0
Out1_D0
Out1_D0
1
Tx0
Port A1
Out1_D1
Out1_D1
1
Tx1
Port A2
Out1_D2
Out1_D2
1
Tx2
Port A3
Out1_D3
Out1_D3
1
Tx3
Port A4
Out1_D4
Out1_D4
1
Tx4
Port A5
Out1_D5
Out1_D5
1
Tx6
Port A6
Out1_D6
Out1_D6
1
Tx27
Port A7
Out1_D7
Out1_D7
1
Tx5
Port B0
Out2_D0
Out1_D8
1
Tx7
Port B1
Out2_D1
Out1_D9
1
Tx8
Port B2
Out2_D2
× 1 Tx9
Port B3
Out2_D3
× 1 Tx12
LQ-201CL
12
Port B4
Out2_D4
Out2_D8
1
Tx13
Port B5
Out2_D5
Out2_D9
1
Tx14
Port B6
Out2_D6
× 1 Tx10
Port B7
Out2_D7
× 1 Tx11
Port C0
Out3_D0
Out2_D0
1
Tx15
Port C1
Out3_D1
Out2_D1
1
Tx18
Port C2
Out3_D2
Out2_D2
1
Tx19
Port C3
Out3_D3
Out2_D3
1
Tx20
Port C4
Out3_D4
Out2_D4
1
Tx21
Port C5
Out3_D5
Out2_D5
1
Tx22
Port C6
Out3_D6
Out2_D6
1
Tx16
Port C7
Out3_D7
Out2_D7
1
Tx17
Port D0
Out4_D0
Out4_D0
2
Tx0
Port D1
Out4_D1
Out4_D1
2
Tx1
Port D2
Out4_D2
Out4_D2
2
Tx2
Port D3
Out4_D3
Out4_D3
2
Tx3
Port D4
Out4_D4
Out4_D4
2
Tx4
Port D5
Out4_D5
Out4_D5
2
Tx6
Port D6
Out4_D6
Out4_D6
2
Tx27
Port D7
Out4_D7
Out4_D7
2
Tx5
Port E0
Out5_D0
Out3_D0
2
Tx7
Port E1
Out5_D1
Out3_D1
2
Tx8
Port E2
Out5_D2
Out3_D2
2
Tx9
Port E3
Out5_D3
Out3_D3
2
Tx12
Port E4
Out5_D4
Out3_D4
2
Tx13
Port E5
Out5_D5
Out3_D5
2
Tx14
Port E6
Out5_D6
Out3_D6
2
Tx10
Port E7
Out5_D7
Out3_D7
2
Tx11
Port F0
Out6_D0
Out3_D8
2
Tx15
Port F1
Out6_D1
Out3_D9
2
Tx18
Port F2
Out6_D2
×
2
Tx19
Port F3
Out6_D3
×
2
Tx20
Port F4
Out6_D4
Out4_D8
2
Tx21
Port F5
Out6_D5
Out4_D9
2
Tx22
Port F6
Out6_D6
×
2
Tx16
Port F7
Out6_D7
×
2
Tx17
LVAL 1
1
Tx24
FVAL 1
1
Tx25
LVAL 2
2
Tx24
FVAL 2
2
Tx25
DVAL
1
Tx26
EEN
1
Tx23
Note： LVAL 1, LVAL 2and FVAL 1, FVAL 2 will show the same signal
LQ-201CL
13
(Output timing)
TxCLK
A7 A6 EEN C7 B7 B6 A7 A6C6
C3 C2 DVAL FVAL C5 C4 C3 C2LVAL
B2 B1 C1 C0 B4 B3 B2 B1B5
A1 A0 B0 A5 A3 A2 A1 A0A4
TxOUT3
TxOUT2
TxOUT1
TxOUT0
1 pixel cycle
Fig.6 Camera Link output timing
5.3.4 Camera link output port
LQ-201CL handles R, G, B and NIR channels. The output ports for 8-bit and 10-bit are different.
The following drawings show the default settings for the Camera Link Video Output Select
(Command OS1 to OS6). Camera Link output can be configured by command OS.
8-bit output
10-bit output
Fig. 7 Camera Link output configuration (Default)
Input signal Camera Link output
RED Out 1
GREEN Out 2
BLUE Out 3
Near IR Out 4
Out 5
Out 6
Camera Link 1 Port a - c
Camera Link 2 Port d - f
Input signal Camera Link output
RED Out 1
GREEN Out 2
BLUE Out 3
Near IR Out 4
Out 5
Out 6
Camera Link 1 Port a - c
Camera Link 2 Port d - fc
LQ-201CL
14
5.3.5 Bit allocation of the output video
CMOS
out
Digital
8-Bit
(LSB)
Digital
10-Bit
(LSB)
Black
8
32
200mV
222
890
230mV
255
1023
Fig.8 Video output
6. Functions and Operation
6.1. Basic functions
Fig.9 Signals flow
The LQ-201CL uses four high-performance CMOS line scan image sensors mounted on a prism
block.
During exposure, the incoming light is converted to electrons (electric charge) in the photodiodes
(active pixels). The transfer gate controls the transfer of charge from photodiodes to the shift
register. Activating the transfer gate terminates the exposure cycle, transfers the charge to the
Horizontal Shift Register (2-phase buried channel CMOS shift register) and starts a new exposure
cycle. The line is subsequently read out in a single sequence starting with pixel 1.
The exposure time is normally the same as the cycle time (in No-shutter mode). By using the
Exposure Control Gate (in Shutter-Select or Pulse Width Control trigger modes) the exposure time
can be individually set to be shorter than the cycle time (the inverse of line rate). This also allows
a fixed exposure time, independent of the line rate. In the LQ-201CL the exposure time can be set
individually for all four channels.
Dichroic
Prism
Color
Separation
Light
AMP
ADC
Auto black, DSNU, PRNU, Shading,
Fine Gain, Line Matrix, Knee, Noise
reduction, User black
MPX
Digital Binning
MUX / Camera link IF
AMP
ADC
Auto black, DSNU, PRNU, Shading,
Fine Gain, Line Matrix, Knee, Noise
reduction, User black
AMP
ADC
Auto black, DSNU, PRNU, Shading,
Fine Gain, Line Matrix, Knee, Noise
reduction, User black
AMP
ADC
Auto black, DSNU, PRNU, Shading,
Fine Gain, Line Matrix, Knee, Noise
reduction, User black
OUT
PUT
300 400 500 600 700 800 900 1000
300 400 500 600 700 800 900 1000
300 400 500 600 700 800 900 1000
300 400 500 600 700 800 900 1000
32
0
CCD_out( mV)
Di gi tal _out ( mV)
Anal og ( mV)
230
1740
2000
200
0
8/32
222/ 890
255/1023
8-bit /10-bit
LQ-201CL
15
Fig.10 Sensor layout
DMDMDMDMDMDMDMDMDMDMDMDMDM
DM
DM0
DM1
DM2
DM3
DM4
DM5
DM6
DM7
AP0
AP1
AP2
AP3
・・・・・・・・・・・・・・・
DM8
DM9
DM10
DM11
DM12
DM13
DM14
DM15
AP2047
AP2046
AP2045
AP2044
・・・・・・・・・・・・・
・
DM
DM
・
2048
LVAL
DVAL
Data
DM : Dummy or Transfer_data Pixels
AP : Active Pixels
LVAL: Line Valid
DVAL: Data Valid
1CLK = 11.9ns
2544
Fig.11 Video output timing
6.2 Key functions
Important note:
LQ-201CL has many functions explained in this chapter. In order to use these functions
properly and to get proper image, please follow the procedure described below.
Setting procedure:
1. Set the shutter and line rate
2. Set the master gain (refer to the chapter 6.3.5 for the details)
3. Set the white balance (refer to the chapter 6.3.4 for the details)
4. Activate DSNU compensation (refer to the chapter 6.3.9 for the details)
5. Activate PRNU compensation (refer to the chapter 6.3.8 for the details)
6. Activate the shading compensation (refer to the chapter 6.3.10 for the details)
After completing the above, adjust black level, lateral chromatic aberration and knee
adjustments. For these adjustments, there is no specific order required.
Effective Pixel
474
DM8
DM9
DM10
DM11
DM12
DM13
DM14
DM15
DM4
DM0
DM1
DM2
DM3
DM5
DM6
DM7
Digital Processor
CDS, PGA, ADC
Serializer
8 82048
Dummy Pixels Dummy Pixels
PD0<0>
PD0<1>
PD0<2>
Transfer Data
DM : Dummy Pixels
480
LQ-201CL
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6.2.1 Line rate (Command LR)
This function can set the line rate longer than 1L. Accordingly, it is possible to set the camera scan
rate with the object running speed or to boost up the sensitivity by setting longer exposure time.
Adjusting range: 30.29 µs(1L) to 15.0 ms
Adjusting unit: 11.9 ns
Operation mode: No Shutter/Internal Trigger and
Shutter Select/Internal Trigger
The line rate can be automatically configured (one-push auto line set) (Command:AR). This function
will calculate and set the line rate of the camera based on the Automatic Line Rate Reference Level
(Command :AL) and the scene illumination. This function is available on No Shutter/Internal Trigger
and Shutter Select/Internal Trigger modes.
6.2.2 Electronic shutter (Exposure) (Command PER, PEG, PEB, PEIR)
This function sets the exposure time regardless of line rate setting. The exposure time can be set
for red, blue, green, and NIR, respectively.
Command PER, PEG, PEB and PEIR
Adjusting range: 9.52 μs to 14.99 ms (RGB and NIR individually)
Adjusting unit: 11.9 ns (1clock) (RGB and NIR individually)
Operation mode: Shutter Select/Internal Trigger and
Shutter Select/External Trigger
Note: Upper limit of operable line rate
On Shutter Select/internal trigger mode
The line rate setting is the maximum line rate for operation
On Shutter Select/external trigger mode:
The trigger interval is the maximum value.
6.2.3 External Trigger
The external trigger can be input through the 12-pin connector or Camera Link CC1.
These cannot be used at the same time.
The external trigger signal can be terminated by 75 ohms inside the camera (Refer to Chapter 4.2).
6.2.4 Serial communication
The camera can communicate by serial interface through the 12-pin or Camera Link interface. The
default baud rate is 9600 bps. The serial interface of the 12-pin or Camera Link interface cannot be
used at the same time. The selection of the communication interface can be done via the DIP switch
located on the rear panel. (Refer to Chapter 4.2)
OFF
ON
Serial
Communication
75 Ω
OFF
ON
Serial
Communication
75 Ω
LQ-201CL
17
6.2.3 EEN (Exposure Enable) function
This function outputs the timing for image accumulation in all operating modes except test pattern
output. The output can be through both the 12-pin and Camera Link connectors. The polarity of this
output is negative from the 12-pin connector and positive from the Camera Link connector. These
polarities cannot be changed. The following drawing shows the output through Camera Link.
Fig.12 EEN function
6.2.4 White balance
In this function, the green channel video level is used as the reference. Red and blue channel levels
are adjusted to match with that of the green channel.
There are two ways to adjust white balance: one is gain white balance and the other is shutter
white balance.
White balance
Control tool
Command
Rear panel
switch
WB
AH
Gain
○ ○ ☓
○
Shutter
○ ☓ ○
☓
Gain white balance
Calculates the difference between green and red video levels, and green and blue levels, and adjusts
the red and blue channels’ video level so that the video level of all three channels becomes equal.
Command WB=0 Manual/One push AWB
WB=1 4000K
WB=2 4600K
WB=3 5600K
Shutter white balance (only for Shutter Select mode)
Calculates the difference between green and red video levels, and green and blue levels, and adjusts
the red and blue channels’ shutter speed so that the video level of all three channels becomes equal.
Command AH=0 Activate one-push shutter AWB
Note:
If gain and shutter white balance are used in the External Trigger mode, external trigger pulses
should be continuously provided while white balance adjustment is executing.
6.2.5 Gain control
The LQ-400CL has two ways of setting gain - one for master mode and the other for individual mode.
Each setting also has two analog gain modes - one is GAIN LOW and the other is GAIN HIGH. Gain
Low is the default output setting. The following shows the setting procedures and adjustable range.
Exposure B
Exposure G
Exposure R
EEN
(I nternal/External )
Tri gger
EEN represents with the longets exposure time among R,G and B
LQ-201CL
18
1. Master mode (Default setting)
Gain Low mode:
Reference value: 0dB
Master gain control range : 0dB to 8dB
R,B and NIR adjusting range :-4dB to +6dB (at the master gain setting value)
Gain High mode:
Reference value: +6dB
Master gain control range : 0dB to 8dB
R, B and NIR adjusting range :-4dB to +6dB (at the master gain setting value)
Fig.13 Master gain mode with Gain Low and High
2. Individual gain mode
Gain Low mode:
Reference value: 0dB
R, G, B and NIR adjusting range :-4dB to +14dB (at the master gain setting value)
Gain High mode:
Reference value: +6dB
R, G, B and NIR adjusting range :-4dB to +14dB (at the master gain setting value)
+4dB
+6dB
+6dB
+6dB
-4dB
-4dB
+6dB
-4dB
0
0+6dB
+2dB
-4dB
0dB
+14dB
+20dB
+8dB 800
800
Analog Gain = LOW Analog Gain = HIGH
Blue Red NIR
Blue Red
Master
Master NIR
LQ-201CL
19
Fig.14 Individual gain mode with gain low and gain high
6.2.6 Black level
The setup level of the LQ-400CL is set at 8LSB in 4 x 8-bit output mode as the factory default setting
(32LSB for 4 x 10-bit output mode)
In order to adjust, the following commands are available.
BLM= 0 Master mode
BLM= 1 Individual mode
BL= 0 to 64
BLR= -64 to 63
BLB= -64 to 63
BLIR= -64 to 63
If the gain is set at Master mode:
Adjusting range Master(green) : 0LSB to 64LSB (16LSB)
Red : -64(-16) LSB to +64(16) LSB
Blue : -64(-16) LSB to +64(16) LSB
NIR : -64(-16) LSB to +64(16) LSB
Figures in ( ) are for 8-bit output
If the gain is set at Individual mode:
Adjusting range Red : 0LSB to 64(16) LSB
Green : 0LSB to 64(16) LSB
Blue : 0LSB to 64(16) LSB
NIR : 0LSB to 64(16) LSB
Figures in ( ) are for 8-bit output
Note: Red, green, blue and NIR can be adjusted individually
6.2.7 PRNU (Pixel Response Non-Uniformity ) correction
PRNU (Pixel Response Non-Uniformity) is, as the name implies, a non-uniformity of the response of
each individual pixel. This means that for a fixed light level each pixel will have a slightly
different output level (response).
Blue Red
Blue Red
1400
0
-400
-400
0
1400
Analog Gain = LOW Analog Gain = HIGH
+6dB
+2dB
-4dB
0dB
+14dB
+20dB
Green
Green NIR
NIR
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Fig.15 Conceptual drawing for PRNU correction (1)
To correct for PRNU, the camera’s internal correction circuit captures one or several lines of data
under non-saturated illuminated conditions which are not more than 80% of maximum
(recommend level is half of maximum), and the average across the line is calculated. Based on
this average, coefficients are then generated for each individual pixel. The coefficient has the
function of multiplying the pixel output with a factor greater or less than 1. These coefficients are
stored in a non-volatile memory, and are therefore maintained after power down.
Fig.16 Conceptual drawing for PRNU correction (2)
6.2.8 DSNU (Dark Signal Non-Uniformity) correction
DSNU (Dark Signal Non-Uniformity) is, as the name implies, a non-uniformity of offset level of
each pixel, which is not dependent on the incoming light.
Fig.17 Conceptual drawing of DSNU correction
To correct for DSNU, the camera internal correction circuit captures one or several lines of data
under dark conditions (the lens must be covered by a lens cap), and the average across the line is
calculated. Based on the average, coefficients are then generated for each individual pixel. The
coefficient has the function of adding or subtracting a value to the pixel output. These
coefficients are stored in a non-volatile memory, and are therefore maintained after power down.
As the dark signal is highly dependent on the exposure time, this correction must be performed
under the operating conditions (exposure time and line rate) that will be used by the application.
Max
Before correction: dark signal non-uniformity from pixel to pixel
Subtract factor
Add factor
Min
Average
Max
Min
Multiply
by
Factor > 1
Multiply
by
Factor < 1
Before correction: Non-uniform response from pixel to pixel
Average
After correction: flat response from pixel to pixel
Average
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21
Fig.18 Conceptual drawing of DSNU correction
6.2.10 Shading correction
Shading is caused either by illumination with uneven distribution of light across the surface, or by
reductions in the light transmission ratio towards the edges of a lens.
The shading correction incorporated in the camera will compensate for this effect by as much as
20% of the brightest signal.
Shading is not compensated for each individual pixel. The signal is averaged across groups of 8 pixels
in relation to the whole line. The pixel response non-uniformity will be superimposed on the output
also after shading correction has been performed. Therefore, it is recommended to perform PRNU
correction before shading correction.
Fig.19 Shading correction
The shading correction has two ways to compensate, flat shading correction and color shading
correction.
Flat shading correction (SDR=0):
Flat shading correction compensates red, blue, green and NIR signals to be flat output. The range
of compensation is within plus-or-minus 20% as compared the brightest signal level. It may not
compensate enough according to the lenses and/or lighting in use.
As the default, the data which is activated in the factory is stored.
Fig.20 Flat shading correction concept drawing
Note:
Depending on the optics and/or illumination used together with the camera, it may not
be possible to fully compensate for shading.
Average
After correction: Flat dark signal response from pixel to pixel
Shading caused by uneven illumination or transmission at the edges of the lens.
Pixel response non-uniformity will be superimposed on the output signal
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