JAI CV-A1-20 User Manual

Compact Monochrome Megapixel

Progressive Scan Camera

CV-A1-20

Operation Manual

Camera: Revision B

Manual: Version 1.1

A1-20manBoct08.doc

JPT 08-10-03

CV-A1-20

Table of Contents

1. General......................................................................................................... 2

2. Standard Composition ....................................................................................... 2

3. Main Features ................................................................................................. 2

4. Locations and Functions..................................................................................... 3

5. Pin Assignment................................................................................................ 4

5.1. 12-pin Multi-connector (DC-IN/VIDEO OUT, EXT.HD/VD IN) .................................... 4

5.2. 6-pin Multi-connector (TRIGGER).................................................................... 4

5.3. Input and Output Circuits ............................................................................ 5

5.3.1. Video output ..................................................................................... 5

5.3.2. Trigger input ..................................................................................... 5

5.3.3. HD and VD input................................................................................. 5

5.3.4. HD, VD, PCLK, WEN and EEN output .........................................................5

5.4. CV-A1 Block Diagram .................................................................................. 6

6. Functions and Operations ................................................................................... 6

6.1. Basic functions ......................................................................................... 6

6.2. Input-output of HD/VD Signals ...................................................................... 8

6.3. Continuous Operation (Non triggered) ............................................................. 9

6.4. External Trigger Modes ............................................................................. 10

6.5. Edge Pre-select Mode ............................................................................... 11

6.6. Pulse Width Control Mode .......................................................................... 12

6.7. Frame-delay read out Mode........................................................................ 13

6.8. Long Time Exposure Mode.......................................................................... 14

6.9. Start/Stop Mode ..................................................................................... 15

6.10. Smearless Mode..................................................................................... 16

6.11. Other Functions..................................................................................... 17

7. Configuring the Camera ................................................................................... 17

7.1. RS-232C control. ..................................................................................... 17

7.2. CV-A1-20 RS-232C command list. ................................................................. 18

7.3. Camera Control Tool for CV-A1-20 ................................................................ 19

7.4. Internal Switch and Jumper Settings ............................................................. 20

8. External Appearance and Dimensions ................................................................... 20

9. Specifications ............................................................................................... 21

10. Appendix ................................................................................................... 22

10.1. Precautions.......................................................................................... 22

10.2. Typical CCD Characteristics ...................................................................... 22

11. Users Record ............................................................................................... 23

- 1 -

CV-A1-20

1. General

The CV-A1-20 is a monochrome progressive scan 1/2” CCD camera with 1.4 Megapixel resolution. CV-A1-20 is identical to CV-A1, but the pixel frequency is 20 MHz instead of 28.636 MHz. 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 both horizontal 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-A1-20 Camera Control Tool for Windows 98/NT/2000 contents a camera control program and tools for making your own program. Camera ID, model name and user ID is present in the camera from revision B. S/N E121231.

The latest version of this manual can be downloaded from: www.jai.com The latest version of Camera Control Tool for CV-A1-20 can be downloaded from: www.jai.com

2. Standard Composition

The standard camera composition consists of the camera main body and operation manual.

3. Main Features

• New compact size 1/2” progressive scan monochrome CCD camera

• 11 full frames 1392 (h) x 1040 (v) 4.65 µm square pixels per second

• Up to 52 fps with 1/6 partial scan.

• Double speed and double sensitivity with V binning

• 4 times normal sensitivity with H and V binning

• 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 1/11 to 1/140,000 second in continuous mode

• Triggered shutter speed up to 1/8381 second

• Programmable shutter speed from 1.3 H to 1023.3 H

• Pulse width controlled shutter 1.3 H to 2000 H

• H synchronized or H non-synchronized accumulation in PWC mode

• Frame delay readout 1.3 H to 2000 H for pulse width controlled shutter

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

• 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 software via RS 232C

• Compact housing with C-mount

- 2 -

4. Locations and Functions

CV-A1-20

Fig. 1. Locations.

1. 12 pin Hirose connector for frame grabber interfacing and power (12V DC).

2. BNC connector for video output. VS 1.0 Vpp 75 Ohm.

3. 6 pin Hirose connector for trigger input and RS-232C control interface.

4. Gain potentiometer 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 10mm (0.4 inches approx.). When IR-cut filter is used, it must be less than 7.0 mm (0.28 inches approx.).

The IR-cut filter is placed in the C-mount thread. The C-mount IR-cut filter must be ordered separately.

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CV-A1-20

5. Pin Assignment

5.1. 12-pin Multi-connector (DC-IN/VIDEO OUT, EXT.HD/VD IN)

Type: HR10A-10R-12PB-01 (Hirose) male Seen from rear. Pin configuration is compatible with EIAJ standard

Pin no. Signal Remarks

1 GND 2 +12 V DC input

9

1

2

3

4

8

10

11

7

12

6

5

3 GND 4 Video output 5 GND 6 HD input/HD output 7 VD input/VD output 8 GND 9 Pixel clock output

10 WEN output 11 Trigger input 12 GND

Fig. 2. 12-pin connector.

Plugs for cable: HR10A-10P-12S

Parallel with the BNC connector.

*) SW2.1 on for 75Ω. SW1.1 on for HD out. *) SW2.2 on for75Ω. SW1.2 on for VD out.

*) JP2 short and PC=1 for pclk out. *) GND if JP5 open and JP3 short *) +12V DC if JP1 short and JP4 open

5.2. 6-pin Multi-connector (TRIGGER)

Type: HR10A-7R-6PB (Hirose) male

Seen from rear.

Pin no. Signal Remarks

1 TXD out

1

6

2

5

3

4

2 RXD in 3 GND 4 GND 5 Trigger input 6 EEN output

Fig. 3. 6-pin connector. Plugs for cable: HR10A-7P-6S Notes. *) Alternative signals can be placed on these pins by switch or jumper settings or RS-232C commands. Configurations shown in Bold + italic is factory setting.

*2) EEN will be low all the time in normal continous mode (TR=0), if the selected exposure time is longer than the frame readout time.

*) Parallel with pin 11 on 12 pin con *) *2). WEN output if EW=1

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CV-A1-20

5.3. Input and Output Circuits

In the following schematic diagrams the input and output circuits for video and timing signals are shown. For alternative connections refer to “7.4. Internal Switch and Jumper Settings.” Jumper settings are shown as for factory default.

5.3.1. Video output

#4/12

The video output is a 75 Ω DC coupled circuit. The BNC connector and pin #4 on the 12-pin connector is in parallel. Avoid double termination. The video DC level is shown with 75 Ω termination.

In the composite signal, there are no equalize and serration pulses in the vertical sync.

Fig. 4. Video output.

CXA1310

32

75

NC

#4/12

Video

Output

BNC

GND

300 mV

500 mV

5.3.2. Trigger input

The trigger input is AC coupled. To allow a long pulse width, the input circuit is a flip flop, which is toggled by the negative or positive differentiated spikes caused by the falling or rising trigger edges. The trigger polarity can be changed. Trigger input level 4 V ±2 V. The trigger-input impedance is 1 kΩ. JP1 and JP4 are for alternative configuration for pin #10.

Fig. 5. Trigger input.

5.3.3. HD and VD input

The input circuit for external HD and VD signals are shown. It can be 75 Ω terminated by closing SW2. SW1 will switch to output the internal HD and VD signal. HD and VD input level is 4 V ±2 V.

Fig. 6. HD and VD input.

+12v

Trigger

input

#5/6

GND

VD HD

Input/output

1n

GND

1k

JP1

1k

JP4#11/12

From VD HD

SW1

NC

output

100

100n

75

10µ

SW2

+

1k

33k

1k2

33k

47p

33k

+5V

TTL

100k

1k

4k7

1k

+5V

1n

TTL

GND

TTL

5.3.4. HD, VD, PCLK, WEN and EEN output

Output circuit for these signals are 75 Ω complementary emitter followers. It will deliver a full TTL signal. JP5 and JP3 are for alternative configuration for pin #10. Output level ≥4 V from 75Ω. (No termination). The WEN polarity can be changed. Signal on pin #6/6 can be changed.

Fig. 7. HD, VD, PCLK, WEN and EEN output.

TTL

- 5 -

10k

220

10k

10

+5V

WEN/ EEN

67

VD, HD

PCLK

WEN

JP5

JP2

SW1

JP3

#6/6

#9/12

#10/12

GND

5.4. CV-A1 Block Diagram

CV-A1-20

Fig. 8. Block diagram.

6. Functions and Operations

6.1. Basic functions

Some of the primary camera functions need a general introduction before the operation modes are described. The list below shows the primary functions from the command list.

SM Shutter Mode Normal shutter, Programmable Exposure SH Shutter Speed Off to 1/140,000 second PE Programmable Exposure 1.3 H to 1023.3 H SC Scanning Format Full frame, 1/2 partial, 1/3, 1/6 partial BI Binning Off, vertical, horizontal, vertical + horizontal TR Trigger Mode Normal, Edge, PWC, frame delay readout Long time exposure, start-stop, smearless (Edge) HC HD Accumulation Sync., async.

The shutter SM can be set to normal (SM=0), where the exposure time is selected from 16 fixed step with the command SH, or programmable exposure (SM=1). The command PE allows 1023 step with 1 line period resolution. (83.6 µs). Note that PE=0 and PE=1 results in 1.3H. 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 image is read out with normal speed. The lines below the partial image are read out and dumped with a high speed. Some signal distortion can be expected below highlighted areas, (saturated areas). It is caused by limitation in the vertical ccd register transfer efficiency at high speed.

Imaged scene

Fig. 9. Partial scanning.

1/2 PS, 513 pixels

1/3 PS, 341 pixels

1380 pixels

1/6 PS, 171 pixels

Partial scanning.

Aspect ratio correct

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CV-A1-20

Binning mode BI is a function where the signal charge from 2 or more adjacent pixels are added together and read out as one pixel. A resulting full frame with lower resolution can be read out with a higher rate. By adding 2 pixels together, the sensitivity is doubled. The CV-A1-20 has both vertical and horizontal binning. With V binning the pixel charge from 2 adjacent lines are added together in the horizontal ccd register. It is done by double pulses to the vertical ccd register. With H binning the pixel charge from 2 horizontal adjacent pixels are added together in the sample/hold circuit after the horizontal ccd register. It is done by shifting the charge from 2 horizontal ccd cells into the sample/hold capacitor for each reset pulse. Both vertical and horizontal binning can work together. The sensitivity is then 4 times normal. The aspect ratio will be correct, if the sampling frequency is divided with 2. See fig. 10.

Displayed image with binning

r

No V binning

V binning

No H binning

H binning

r e

f pix

e t

t s

s

i

i g

g e

e r

r d

d c

c c

c l

l a

a c

c

i

i t

t r

r e

e V

V

Horizontal ccd register

S/H Reset

H

Xsg1

Video out

Pclk out

:2

Pclk out

H binning is 2:1. V is 2:1. Together it is a 4 :1 binning

Fig. 10. Binning.

The accumulation mode HC can be set to asynchronous accumulation (HC=1). The exposure in PWC mode (TR =2) and Frame Delay readout (TR=3) will start immediately at the leading edge of the trigger pulse without waiting for the HD. Fig. 11 and fig. 12 shows the details.

HD

Trigger

HD

Trigger

Displayed image with binning

1380 pixels

1035 pixels

Norma l full scanning .

Aspect ratio correct

1380 pixels

501 pixels

Vertical binning

690 pixels

1035 pixels

Horizontal binning

690 pixels

501 pixels

V and H binning.

Aspect ratio correct

Accum

Xb

Fig. 11. PWC H synchronous accumulation Fig 12. PWC asynchronous accumulation

In normal trigger mode (TR=0) shutter speed up to 1/140,000 sec. can be used. In all triggered shutter modes, the shortest shutter time is limited to ≥1,3 H. (1/8381). In triggered shutter modes with partial scan or binning, the longest shutter speed is not limited by the frame read out time. It can be longer.

Trigger modes with possible scanning and binning combinations

Scanning Full scanning Partial scanning

TR= 0 Normal

1 Edge Pre-sel. 2 Pulse Width 3 Fr. Delay r.o. 4 Long Time int 5 Start/Stop 6 Smearless

√ Described mode n Non-described mode combination, which will work

Binning norm. V H V+H Norm V H V+H

√ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √

n n n n

√ √ √ √ √

n n n SM=0, SM=1 active n n n SM=0, SM=1 active n n n HC=0, HC=1 active n n n HC=0, HC=1 active

n n n SM=0, SM=1 active

Remarks

- 7 -

JAI CV-A1-20 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1. General

2. Standard Composition

3. Main Features

4. Locations and Functions

5. Pin Assignment

5.1. 12-pin Multi-connector (DC-IN/VIDEO OUT, EXT.HD/VD IN)

5.2. 6-pin Multi-connector (TRIGGER)

5.3. Input and Output Circuits

5.3.1. Video output

5.3.2. Trigger input

5.3.3. HD and VD input

5.3.4. HD, VD, PCLK, WEN and EEN output

5.4. CV-A1 Block Diagram

6. Functions and Operations

6.1. Basic functions