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JAI CV-A20CL, Руководство по эксплуатации

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CV-A20

 

CL / CV-A80

 

CL 

 

6.1.4.

 

Frame rate for Window Scan Mode 

The frame rate is calculated as follows: 
 
Frame frequency = 1L [67,500] divided by (Blanking Period [45] + windowing scan period [lines]) 

 
For instance, in the case that the vertical window is set at 540 lines the frame frequency is 

67,500 ÷ (45 + 540) = 115.3 Hz 
 

Important note: 

1.

 

Line frequency, 67.5 kHz, is not changed. 

2.

 

In continuous mode, the synchronous counter in the sensor will automatically reset after 

changing the setting of windowing. Therefore, the first frame right after changing the 
setting of window does not correctly show the effective area.   

3.

 

In Strobe-Preset Snapshot mode, the new windowing setting is effective from the following 

frame when the setting is changed during the trigger operation. 

6.1.5.

 

Electronic shutter 

The electronic shutter employed in this camera is the rolling shutter system. 
Exposure time can be adjusted by varying the shutter time of sensor. 
There is approximately one frame time difference of the exposure between the first scanning line 
and the last scanning line.  
The electronic shutter is available only in continuous mode. 
 
The below figure shows relationship between picture area (line position) and exposure time. 
The exposure time can be controlled in 1 LVAL steps by the pre-set shutter or the programmable 
exposure. 

FVAL

Line#1

Exposure

Line#500

Exposure

Line#1125

Exposure

Data

Output

Reset

Reset

Reset

Reset

Reset

Reset

Reset

Reset

Reset

Line1

1125

Exposure

Set by Shutter

Read out

Read out

Read out

Read out

Read out

Read out

Read out

Read out

Read out

Fig.14.  The relation between the picture area and the exposure time 

11 

Содержание CV-A20CL

Страница 1: ...Digital monochrome color HDTV 1080p CMOS camera CV A20CL CV A80CL Operation Manual Document Version 1 0 Camera Revision 0 Copy right 2007 JAI All rights reserved ...

Страница 2: ...n When a Camera Link cable is connected to the camera please do not excessively tighten screws by using a screw driver The Camera Link receptacle on the camera might get damaged For security the force used to tighten screws is less than 0 291 Newton Meter Nm Tightening by hand is sufficient in order to achieve this 3 Ã ...

Страница 3: ...ignals 14 6 3 1 External trigger Input 14 6 3 2 Strobe signal Output 14 6 4 Operation Modes 15 6 4 1 Continuous operation 15 6 4 2 Strobe Preset Snapshot mode 15 6 4 3 Widowing Timing Chart 17 6 4 4 Mode and function compatibility matrix 18 6 4 5 Setting gain and offset 18 7 Configuring the Camera 20 7 1 Switch settings 20 7 2 RS 232C control 20 7 3 Save and Load Functions 21 7 4 CV A20CL CV A80CL...

Страница 4: ...d from www jai com For camera revision history please contact your local JAI distributor 2 Standard Composition The standard camera composition consists of the camera main body and C mount protection cap The camera is available in the following versions CV A20CL 2 million pixel HDTV format monochrome CMOS camera CV A80CL 2 million pixel HDTV format Bayer mosaic color CMOS camera 3 Main Features Co...

Страница 5: ...t or C am er a Li nk C onnect or Power TRIG 1 Camera Link Connector 2 12 pin Hirose Connector for DC12V Trigger and RS232C 3 LED indicator 4 C mount 5 CMOS sensor 6 Mounting holes 10 x M3 depth 4mm Note Rear protraction on the C mount lens must be less than 10mm Fig 1 Locations 4 ...

Страница 6: ... 20 7 I RXD 21 8 6 19 O TXD RS232C 10 23 17 4 I Reserved CC2 22 9 5 18 I Trigger CC1 Ext Trigger 15 2 12 25 O Txout0 16 3 11 24 O Txout1 17 4 10 23 O Txout2 19 6 8 21 O Txout3 Camera Link out 18 5 9 22 O TxClk Clock for CL Pin I O Name Note 1 GND 2 12V Power 3 GND 4 O IRIS VIDEO Video signal for Auto Iris Lens 5 GND 6 I RXD 7 O TXD RS 232 C default setting is CL serial communication 8 GND 9 O Stro...

Страница 7: ... 22 9 10 23 24 11 13 14 1 25 12 26 Shield Signal Connector Pin To Frame Grabber 2tap Port Signal 8bit Output 10bit output Pin No Port A0 DA0 LSB DA0 LSB Tx0 Port A1 DA1 DA1 Tx1 Port A2 DA2 DA2 Tx2 Port A3 DA3 DA3 Tx3 Port A4 DA4 DA4 Tx4 Port A5 DA5 DA5 Tx6 Port A6 DA6 DA6 Tx27 Port A7 DA7 MSB DA7 Tx5 Port B0 DB0 LSB DA8 Tx7 Port B1 DB1 DA9 MSB Tx8 Port B2 DB2 NC Tx9 Port B3 DB3 NC Tx12 Port B4 DB4...

Страница 8: ... coupled To allow long pulses the input circuit i designed as a flip flop circuit The leading and trailing edges of the trigger pulse activate the circuit Fig 6 Trigger input circuit The trigger polarity can be changed by TP 1 The default trigger input level is 4V 2V TTL By changing the camera internal switch SW 1 the input impedance can be changed to 75 Ω DIP SW 1 Top C over Trigger input impedan...

Страница 9: ...20 Total 1920 columns Rows 1 3 5 19 19 19 17 2 4 6 19 18 19 20 Odd Pixel Even Pixel Total 960 columns 1 3 5 19 19 19 17 2 4 6 19 18 19 20 Odd Pixel Even Pixel Fig 9 Formatted Odd and Even interleaved output 6 1 2 Strobe preset Snap Shot trigger operation The snap shot trigger mode allows the capture of a complete frame when used in conjunction with a strobe light or a mechanical shutter The scene ...

Страница 10: ...of Strobe Delay Time 0 Important Note The CMOS sensor does not have a mechanism that allows pixels to be reset at one time and is therefore accumulating and reading out continuously Due to this a residual image of the previous frame may be superimposed on the frame being shot To avoid this the scene to be captured must be shielded from ambient light and only illuminated by strobe illumination Fig ...

Страница 11: ...line read out to 1125 fps Minimum read out line 1 line for CV A20CL 2 lines for CV A80CL 0 1 2 3 4 1078 538 1079 539 Vertical Segmentation for CV A80CL 1920 1080 Fig 12 Window Scan Layout Setting commands for windowing scan Command WS 0 Full Frame 1 Window Command WY Window Scan Starting line CV A20CL 0 to 1079 CV A80CL 0 to 1078 Command WH Height of Window lines CV A20CL 1 to 1080 CV A80CL 2 to 1...

Страница 12: ...ing is changed during the trigger operation 6 1 5 Electronic shutter The electronic shutter employed in this camera is the rolling shutter system Exposure time can be adjusted by varying the shutter time of sensor There is approximately one frame time difference of the exposure between the first scanning line and the last scanning line The electronic shutter is available only in continuous mode Th...

Страница 13: ... is available together with Window scan but it is effective only when the preset shutter value LVAL is set at a value less than the Window height If the shutter value is larger than the window height lines the shutter is automatically set to OFF When the Strobe Preset Snapshot trigger mode is selected the shutter is automatically set to OFF 6 2 Image sensor 6 2 1 Sensor Layout The CMOS sensor layo...

Страница 14: ... is valid EEN Enable Exposure LVAL Period Continuous Full Frame DVAL LVAL FVAL DATA OUT 1ck 74 25MHz 13 47ｎ S 1 LVAL Period 1100ck H Widtn STROBE OUT 140ck Fig 16 Horizontal timing Full Frame FVAL Period Continuous Full Frame V Width L 36L DVAL FVAL LVAL DATA OUT 1L 1 LVAL Period 1L 1100ck 14 815uS 1ck 74 25MHz V Width 1 FVAL Period 45L V Width L STROBE OUT 45L 9L V Start Fig 17 Vertical timing Fu...

Страница 15: ... of 67ns 5 clocks The settings can be controlled via serial communication Command RB Readout Begin This is effective only when TR 1 Strobe Preset Snap Shot trigger mode This command determines the Strobe period Range 2 to 1125L 1 LVAL steps 1 LVAL 14 815μs Command ENL Strobe Enable Delay Lines The command sets delay the start of Strobe light in LVAL increments Range 0 to 1125L 1 LVAL steps 1 LVAL ...

Страница 16: ...Window scan select Full or Window WS 0 or 1 If used Window scan start WY 0 to 1079 for CV A20CL WY 0 to 1078 for CV A80CL Window scan height WH 1 to 1080 for CV A20CL WH 2 to 1080 for CV A80CL Shutter operation for Window mode Continuous The electronic shutter is available together with Window scan but it is effective only when the preset shutter value LVAL is set at a value less than the Window h...

Страница 17: ...he Strobe signal output can be delayed 2 Readout Begin Period The Strobe signal is asynchronous in relation to the line rate FVAL is output synchronous to LVAL when the Strobe signal is changed from HIGH level to LOW level LVAL Period The timing for LVAL period is the same as the timing for Continuous mode and Windowing Trigger minimum interval The following timing chart explains the period requir...

Страница 18: ...2L 1L Whereby Strobe delay 0 is inherent delay which is fixed at 35 clk 1ck Strobe delay time is determined by Strobe Enable Delay Time Strobe out period is determined by Readout Begin Period 38L 0 to 1L 9L OB and 2L 1L are fixed values Effective period may vary depending on scanning format 6 4 3 Widowing Timing Chart The following drawings show vertical and horizontal timing for Windowing mode on...

Страница 19: ...ontinuous mode in conjunction with Windowing Note 2 See chapter 6 3 2 for controlling the Strobe timing in Strobe preset Snap Shot trigger mode Fig 24 Mode and function matrix chart 6 4 5 Setting gain and offset Command AS AGC select This can select ON or OFF AS 0 OFF for Manual gain control AS 1 ON for Auto gain control Command AG AGC Reference This sets the reference of AGC This is available onl...

Страница 20: ... Offset Black level This can change the offset black level set up level manually Command BRMO Black Reference for continuous mode This can select Auto or Manual for black level control Factory setting is Manual Command BROO Black Reference value for continuous mode This value is used in conjunction BRMO when it is set to Auto 19 ...

Страница 21: ...xternal trigger input termination 75 ohm TTL default 2 Select serial communication path Camera Link default Hirose 12 Pin The factory default is Camera Link serial communication DIP SW 2 Serial communication interface ON Camera Link Default OFF RS 232C Hirose 12 pin 7 2 RS 232C control Protocol Baud Rate 9600 Data Length 8bit Start Bit 1bit Stop Bit 1bit Parity None Xon Xoff Control None Transmit ...

Страница 22: ...ands are for storing and loading camera settings in the camera EEPROM Load settings LD This command will load previous stored settings to the camera 3 user settings can be stored in the camera EEPROM 1 factory setting is also stored in the camera The settings stored in the last save user area will be used as default settings at power up Save Settings SA This command will store the actual camera se...

Страница 23: ... Param CR LF TI 0 Camera Link 1 Hirose12 pin Pin 10 3 Trigger Polarity TP Param CR LF TP 0 Active Low 1 Active High 4 Strobe Enable Delay Lines ENL Param CR LF ENL CR LF 0 to 1125 Available when TR 1 Available when TR 1 5 Strobe Enable Delay Pixels ENP Param CR LF ENP CR LF 0 to 219 6 Readout Begin RB Param CR LF RB CR LF 2 1125L Set in step 1 1L 14 815us Available when TR 1 D Scan Format and vide...

Страница 24: ...trix PG4 Param CR LF PG4 CR LF 3 to 12 3 6dB 2 3dB 1 2dB 0 0dB 1 1dB 2 2dB 12 12dB 9 Black level BL Param CR LF BL CR LF 255 to 255 This is for SET UP Level 10 BLACKREF Mode in the continuous mode BRM0 Param CR LF BRM0 CR LF 0 Auto 1 Manual Default 11 BLACKREF value in the continuous mode BR00 Param CR LF BR00 CR LF 0 to 1023 This is for black level adjust F Saving and loading data in EEPROM 1 Loa...

Страница 25: ...he Camera Control Tool Software is based on a main Tool Bar and a number of associated Tool Windows Each button in the Tool Bar pops up a separate Tool Window when pressed The layout of the program can be adjusted by arranging the windows the way it is preferred The program will store this information and recreate this layout when the program is restarted All Camera Control Tools have a Communicat...

Страница 26: ...ool 8 4 Communication Window The Communication Window is used to connect the Camera Control Tool with the JAI camera Depending of camera there are 2 possible ways to communicate with a JAI camera RS 232 Select the communication port where the serial cable is connected from the list box in the Communication Port field or click the Auto button to search for a camera on communication port 1 to 16 The...

Страница 27: ...nication port from the communication window changes the online off line status If a camera is found on the selected communication port the application runs online Changing the settings in the application will automatically update the camera settings when the application is online If the application looses connection with the camera it will automatically go to offline mode and it is indicated in th...

Страница 28: ... Settings Factory Settings and the available User Areas The file is formatted as shown in the picture below EEPROM Current Area Click the Get Area button to read the power up settings area number 8 5 Camera Control Window The Camera Control Window contains the fundamental camera setting functions It is possible to set the shutter mode Trigger mode scan format gain control and black setting For CV ...

Страница 29: ...e Camera Control Tool saves the last used settings not the user area which don t have to be the same as for the last saved user area 6 The setup file CameraName ini stores all information about camera settings When the program is started the last settings for the program are loaded from the file CameraName ini 7 When you turn on the camera and the Camera Control Tool it is possible that the Camera...

Страница 30: ...CV A20CL CV A80 CL 9 External Appearance and Dimensions Fig 26 Dimensions 29 ...

Страница 31: ...CV A20CL CV A80 CL 10 Specifications 10 1 Spectral response Wavelength nm Fig 27 Spectral response for monochrome CMOS Fig 28 Spectral response for Bayer Color CMOS Shown without 700 nm IR cut filter 30 ...

Страница 32: ...le 0dB to 12 dB Synchronization Internal External Snap shot trigger Preset Electronic shutter 1 60 OFF 1 120 1 250 1 500 1 1 000 1 2 000 1 4 000 1 10 000 1 20 000 in 9 steps Programmable Exposure 2 LVAL to 1125 LVAL in 1 LVAL increments 1 line increment 2 lines increment Windowing Scan Vertical only Set the start line and window height Trigger mode Continuous Strobe Preset Snap shot Gamma 1 0 Blac...

Страница 33: ...es or similar sharp patterns the edges of these objects may appear jagged Blemishes All cameras are shipped without visible image sensor blemishes Over time some pixel defects can occur This does not have a practical effect on the operation of the camera These will show up as white spots blemishes Exposure to cosmic rays can cause blemishes to appear on the image sensor Please take care to avoid e...

Страница 34: ...ITH THE FOLOWING PROVISIONS APPLYING TO IT EN61000 6 2 EN61000 6 3 Company and product names mentioned in this manual are trademarks or registered trademarks of their respective owners JAI A S cannot be held responsible for any technical or typographical errors and reserves the right to make changes to products and documentation without prior notification Europe Middle East Africa Asia Pacific Ame...

Страница 35: ...ucts known as China RoHS The table shows contained Hazardous Substances in this camera mark shows that the environment friendly use period of contained Hazardous 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 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 方忖仝15々葎豚 15定 ...

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