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CV-A2

 

1. General 

 
The CV-A2 is a monochrome progressive scan 1/1.8” CCD camera with 2 Megapixel resolution. 
The CV-A2 camera is in the popular CV-A1 family. It is designed for automated inspection, 
featuring a small housing and a wide range of unique functions. The asynchronous trigger can be 

set to work in several modes, to allow such functions as pulse width controlled shutter, 
programmable shutter speed and long time integration. To obtain higher frame rates, the 
camera has partial scanning and vertical binning. 
All modes and functions can be set via an RS-232C interface, greatly reducing the need for 
mechanical switches or jumpers. 
CV-A2 Camera Control Tool for Windows 98/NT/2000/XP contents a camera control program and 
tools for making your own program. 
 

The latest version of this manual can be downloaded from: www.jai.com 
The latest version of Camera Control Tool for CV-A2 can be downloaded from: www.jai.com 
 

2. Standard Composition 

 
The standard camera composition consists of the camera main body. 
 

3. Main Features 

• 

Compact size 1/1.8” progressive scan monochrome CCD camera 

• 

New 2 Megapixel camera in the popular CV-A1 family 

• 

15 full frames 1620(h) x 1220 (v) 4.4 

µ

m square pixels per second 

• 

Up to 70 fps with 1/6 partial scan. 

• 

Double speed and higher sensitivity with vertical 2:1 binning  

• 

Iris video output for lens iris control 

• 

Auto shutter and AGC for wide light range 

• 

Internal, external HD/VD or random trigger synchronization 

• 

Edge pre-select, programmable shutter and pulse width control trigger modes 

• 

Start/stop mode (trigger/ext. VD) and long time exposure (ext. VD interval) 

• 

Shutter speeds from 1/15 to 1/200,000 second in continuous mode  

• 

Triggered shutter speed up to 1/12,000 second  

• 

Programmable shutter speed from 1 H to 1250 H. (2047 H in EPS) 

• 

Pulse width controlled shutter 1 H to 2 seconds 

• 

Frame delay readout up to 2 second for pulse width controlled shutter  

 

• 

Smear-less readout mode for edge pre-select and programmable shutter 

• 

Sensor gate control for non triggered strobe flash applications 

• 

Exposure enable EEN, write enable WEN and pixel clock output 

• 

Short ASCII commands for fast mode set-up via serial port 

• 

Set-up by Windows 98/NT/Win2000/XP software via RS 232C

 

• 

Compact housing with C-mount  

 

- 2 - 

 

Summary of Contents for CV-A2

Page 1: ...Compact Monochrome 2 Megapixel Progressive Scan Camera CV A2 Operation Manual Camera Revision A Manual Version 1 0 A2manDec20 doc JPT 20 12 04 ...

Page 2: ...rnal Trigger Modes 12 6 5 Edge Pre select Mode 13 6 6 Pulse Width Control Mode 14 6 7 Frame delay read out Mode 15 6 8 Long Time Exposure Mode 16 6 9 Start Stop Mode 17 6 10 Smearless Mode 18 6 12 Sensor Gate Control 19 6 13 Other Functions 20 6 14 Request Functions 22 6 15 Save and Load Functions 22 7 Configuring the Camera 24 7 1 RS 232C control 24 7 2 CV A2 RS 232C command list 25 7 3 Camera Co...

Page 3: ...y 3 Main Features Compact size 1 1 8 progressive scan monochrome CCD camera New 2 Megapixel camera in the popular CV A1 family 15 full frames 1620 h x 1220 v 4 4 µm square pixels per second Up to 70 fps with 1 6 partial scan Double speed and higher sensitivity with vertical 2 1 binning Iris video output for lens iris control Auto shutter and AGC for wide light range Internal external HD VD or rand...

Page 4: ...ter for manual gain setting 5 Mounting holes 8 x M3 For precision mounting use only the 4 holes located at the forward part of the bottom plate 6 1 2 interline transfer type CCD sensor 7 Lens mount for C mount lenses 1 Note 1 Rear protrusion on the C mount lens must be less than 9 mm 0 4 inches approx When IR cut filter is used it must be less than 6 0 mm 0 24 inches approx The IR cut filter is pl...

Page 5: ...input VD output SW502 4 on for 75Ω SW501 2 on for VD out 8 GND 9 Pixel clock output PC 1 for pclk out R615 short 10 WEN output 11 Trigger input 12 GND Pin no Signal Remarks 1 TXD out 2 RXD in 3 GND 4 GND 5 Trigger input Parallel with pin 11 on 12 pin con 6 EEN WEN output 2 WEN output if EW 1 3 4 5 6 7 8 9 10 11 12 1 2 Seen from rear 1 2 3 4 5 6 Fig 3 6 pin connector Plugs for cable HR10A 7P 6S Not...

Page 6: ...e or positive differentiated spikes caused by the falling or rising trigger edges GND 5V 33k TTL 1k GND 100n 1k Trigger input 33k 100k 1n NC 1k 5 6 11 12 100 GND 5V 33k TTL 1k GND 100n 1k Trigger input 33k 100k 1n NC 1k 5 6 11 12 100 The trigger polarity can be changed Trigger input level 4 V 2 V The trigger input impedance is 1 kΩ Fig 5 Trigger input 5V 47p 33k TTL 1k2 GND 10µ 4k7 VD HD Input out...

Page 7: ...to shutter SM 2 will work in normal mode TR 0 Range Off 1 12 000 The CCD scanning format SC can be selected between full or partial scanning With partial scanning only the vertical central part of the CCD sensor is read out with a higher frame rate The partial scan is done by a fast dump read out of the lines in the vertical ccd register down to the top of the partial image The partial part of the...

Page 8: ...els 594 pixels Normal full scanning Vertical binning Displayed image with binning 1620 pixels 1620 pixels 1220 pixels 594 pixels Xsg1 Videoout NoVbinning Vbinning H Horizontal ccdregister Vertical ccd register S H Reset Xsg1 Videoout NoVbinning Vbinning H Horizontal ccdregister Vertical ccd register S H Reset Fig 10 Binning The following table shows the frame rates in normal continuous mode Scanni...

Page 9: ...nd binning combinations Scanning Full scan Partial scan TR Binning norm V bin Norm V bin Remarks 0 Normal n SM 0 SM 1 SM 3 active AS 1 active SG 1 active 1 Edge Pre sel n SM 0 SM 1 active 2 Pulse Width n 3 Fr Delay r o n n 4 Long Time int n n 5 Start Stop 6 Smearless n SM 0 SM 1 active Described mode n Non described mode combination which will work Note for mode setting With RS232C commands it is ...

Page 10: ...5 Ω for termination of VD HD SW 502 on PK8486A to TTL for TTL level for VD HD Factory default SW 501 on PK8486A to OUT for internal VD HD output Input Ext VD in or int VD out on pin 7 on 12 pin connector Ext HD in or int HD out on pin 6 on 12 pin connector Important notes on using this mode External sync system should follow the camera scanning and binning system In trigger modes there are no cont...

Page 11: ...modes shutter times longer than the actual frame time has no meaning The exposure will be equal the frame time To use this mode Set function Trigger mode Normal TR 0 Shutter mode Normal Programmable Auto SM 0 SM 1 SM 2 Shutter Speed SH 0 through 15 Programmable exposure PE 1 through 1250 Other functions Input Ext VD on pin 7 on 12 pin connector If used Ext HD on pin 6 on 12 pin connector If used I...

Page 12: ...binning Table showing the figures for scanning Scanning D V period F Effective video Remarks Full 1252H 1220H 1 2 partial 676H 610H Shown on timing diagram 1 3 partial 474H 408H 1 6 partial 274H 204H Fig 17 Vertical timing details for partial scan 11 ...

Page 13: ...HD synchronously accumulation The accumulation starts at the first HD after the trigger leading edge To avoid the 1H jitter caused by this delay synchronize the external trigger falling and rising edge to HD as shown in fig 18 below The trigger level translations should be placed inside the 5 6 2 8 µseconds To obtain the highest triggered frame rate in EPS mode and PWC mode it is possible to start...

Page 14: ...ty and other functions Input Ext trigger to pin 5 on 6 pin connector or pin 11 on 12 pin connector Ext HD to pin 6 on 12 pin connector If used Important notes on using this mode The start of exposure will start synchronized to the internal H signal The start may be shifted max 1H To avoid this shift 1 H jitter synchronize the camera to an external HD and make sure that the trigger pulse aligns to ...

Page 15: ... Ext trigger to pin 5 on 6 pin connector or pin 11 on 12 pin connector Ext HD to pin 6 on12 pin connector If used Important notes on using this mode With HC 0 the start of exposure will start synchronized to the internal H signal The start may be shifted max 1H To avoid this shift 1 H jitter synchronize the camera to an external HD and make sure that the trigger pulse aligns to the HD as shown in ...

Page 16: ...EN pulse indicates that the resulting video is being read out To use this mode Set function Trigger mode Frame delay read out TR 3 Polarity and other functions Input Ext trigger to pin 5 on 6 pin connector or pin 11 on 12 pin connector Ext VD to pin 7 on 12 pin connector Ext HD to pin 6 on12 pin connector If used Important notes on using this mode The exposure will start synchronized to the intern...

Page 17: ...ystem should follow the camera scan system The long time exposure is a continuous process where each external VD pulse will synchronize the camera stop an exposure start a new exposure and read out the previous accumulated video signal A WEN pulse indicates that the resulting video is being read out To use this mode Set function Trigger mode Long Time Exposure TR 4 Polarity and other functions Inp...

Page 18: ... 5 on 6 pin connector or pin 11 on 12 pin con Ext VD to pin 7 on 12 pin connector Ext HD to pin 6 on12 pin connector If used Important notes on using this mode The start of exposure will start synchronized to the internal H signal The start may be shifted max 1H To avoid this shift 1 H jitter synchronize the camera to an external HD and make sure that the trigger pulse aligns to the HD as shown in...

Page 19: ...s mode Set function Trigger mode Smearless read out TR 6 Shutter mode Normal or Programmable SM 0 SM 1 Shutter Speed SH 0 through 10 Programmable exposure PE 1 through 2047 Polarity and other functions Input Ext trigger to pin 5 on 6 pin connector or pin 11 on 12 pin connector Ext HD to pin 6 on12 pin connector If used Important notes on using this mode The start of exposure will start synchronize...

Page 20: ...nal SG pulse To inhibit the internal SG pulse and continue the accumulation the external sensor gate control signal should be low during line 14 after the falling VD edge The sensor gate control signal can be synchronized by the VD signal For video out timing details refer to fig 15 16 To use this mode Set function Trigger mode to Normal TR 0 Sensor Gate select to sensor gate SG 1 Scanning SC 0 Sh...

Page 21: ... function selects the shutter from the 15 fixed steps SH With SM 1 from programmable in 1250 steps PE For EPS modes 2047 steps SM 2 is auto shutter The auto shutter range is from OFF to 1 12 000 The reference setting for auto shutter is common with the AGC reference AG 0 through AG 1023 Together with the AGC function it will keep the video output constant over a wide range of illumination The AGC ...

Page 22: ...an auto iris lens It may result in an unstable regulation Gain and analogue settings Do not adjust these settings unless you have knowledge to video adjustments Gain settings AS 0 AS 1 The video gain can be selected between manual gain AS 0 or AGC AS 1 Manual gain is set either by the gain level command GA 64 through GA 191 if RP 0 or the rear potentiometer if RP 1 The reference level for the AGC ...

Page 23: ... its ID which is a manufacturing code Model Name MD If received the camera will send back its model name User ID UD With this command the user can program and store up to 16 characters for identification RS232C Baud Rate BDRT 1 through 3 It is possible to change the communication speed from 9600 Baud to a higher speed The new selected speed will be effective after next power up 6 15 Save and Load ...

Page 24: ...dge SO Sync Signal 0 off 1 on PC Pixel Clock 0 off 1 on EW EEN WEN 0 EEN 1 WEN connector HR6 pin6 TP Trigger Polarity 0 active low 1 active high WP WEN Polarity 0 active low 1 active high AS AGC Select 0 AGC off manual 1 AGC on AG AGC Level 0 1025 GA Manual Gain Level 64 191 RP Rear Potentiometer 0 off remote 1 on BL Black Level 0 255 WC White Clip Level 0 255 SGP Sensor Gate Invert 0 normal 1 inv...

Page 25: ... changed by RS232C commands 9600bps to 38400 bps Protocol Transmit setting to camera NN Parameter CR LF NN is any kind of command Capital or small letters To have all communication visible on the emulator screen start with EB 1 CR LF The camera answers COMPLETE CR LF Transmit the following to have the actual parameter for a command NN CR LF NN is any commands with parameters The camera answers NN ...

Page 26: ...ck PC Param CR LF 0 no clock out 1 clock out Should be off when not used EW EEN WEN EW Param CR LF 0 EEN out 1 WEN out Pin 6 on 6 pin connector TP Trigger polarity TP Param CR LF 0 active low 1 active high 1 WP WEN polarity WP Param CR LF 0 active low 1 active high SGP Sensor Gate invert SGP Param CR LF 0 active low 1 active high active low is normal SG Sensor Gate select SG Param CR LF 0 trig mod...

Page 27: ...re than a program with a window interface It also provides an easy and efficient ActiveX interface built for MS Windows 98 ME NT and 2000 The OCX interface has the ability to connect to the camera using the serial interface of the PC by reading and writing properties for the camera This integration requires simple programming skills within Visual Basic Visual C or similar languages in a Microsoft ...

Page 28: ...bove and it will automatically be included in the list of help files For newer camera models the About Window also shows Model Name camera ID and User ID It is possible to edit and save free text in User ID At the bottom of the windows all windows but the Communication Window is a coloured bar The bar is green when the Camera Control Tool is connected to a camera and the camera is turned on The ba...

Page 29: ...hed and all functions are fully functional in offline mode Off line mode is indicated in The Communication Window where a status field with graphic and text indicates the on off line status Changing the selected communication 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 otherwise offline Ch...

Page 30: ...a Control Tool 1 The Camera Control Tool bar is always on top of other windows 2 When you minimize the Camera Control Tool bar all open windows will close 3 It is possible to work with the Camera Control Tool when the camera is online and when the camera is offline 4 The newer JAI cameras always start up with the last used user area but for some old models it will start up with the last saved user...

Page 31: ...CV A2 7 4 Internal Jumper Settings Jumper for pixel clock out R615 Factory setting is short Fig 28 Jumper position 8 External Appearance and Dimensions Fig 29 Dimensions 30 ...

Page 32: ... 1 2 1 3 1 6 Trigger Continuous Edge pre select Pulse width control frame delay Accumulation mode H synchronized H non synchronized in PWC and frame delay only Shutter speed Fixed Full frame only 1 15 1 30 1 60 1 100 1 250 1 500 1 1000 1 2000 1 4000 1 8000 1 20 000 1 40 000 1 80 000 1 120 000 1 160 000 1 200 000 second Shutter speed in trigger modes Max 1 12 000 second 1 12 000 for settings 1 20 0...

Page 33: ...CV A2 9 2 Spectral Sensitivity 400 500 600 700 800 900 Wave lenght nm 1 0 0 8 0 6 0 4 0 2 0 0 Relative response 1000 Fig 30 Spectral sensitivity 32 ...

Page 34: ...ypical CCD characteristics V Smear Due to an excessive bright object such as electric lighting sun or strong reflection vertical smear may be visible on the video monitor screen This phenomenon is related to the characteristics of the Interline Transfer System employed in the CCD V Aliasing When the CCD camera captures stripes straight lines or similar sharp patterns jagged image on the monitor ma...

Page 35: ...anual 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 JAI A S Denmark Phone 45 4457 8888 Fax 45 4491 8880 www jai com JAI Corporation Japan Phone 81 45 440 0154 Fax 81 45 440 0166 www jai corp co jp JAI UK Lt...

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