JAI Security Camera 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  
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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.  
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 -  
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CV-A1-20  
4. Locations and Functions  
Fig. 1. Locations.  
1.  
2.  
3.  
4.  
5.  
12 pin Hirose connector for frame grabber interfacing and power (12V DC).  
BNC connector for video output. VS 1.0 Vpp 75 Ohm.  
6 pin Hirose connector for trigger input and RS-232C control interface.  
Gain potentiometer for manual gain setting.  
Mounting holes, 8 x M3. For precision mounting use only the 4 holes located at the  
forward part of the bottom plate.  
6.  
7.  
1/2” interline-transfer type CCD sensor.  
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.  
- 3 -  
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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  
GND  
+12 V DC input  
GND  
Remarks  
1
2
3
1
9
2
8
10  
5
Parallel with the BNC connector.  
4
5
6
7
Video output  
GND  
HD input/HD output  
VD input/VD output  
GND  
11  
3
7
12  
4
6
*) SW2.1 on for 75. SW1.1 on for HD out.  
*) SW2.2 on for75. SW1.2 on for VD out.  
8
*) JP2 short and PC=1 for pclk out.  
*) GND if JP5 open and JP3 short  
*) +12V DC if JP1 short and JP4 open  
9
Pixel clock output  
WEN output  
Trigger input  
GND  
10  
11  
12  
Fig. 2. 12-pin connector.  
Plugs for cable: HR10A-10P-12S  
5.2. 6-pin Multi-connector (TRIGGER)  
Type: HR10A-7R-6PB (Hirose) male  
Seen from rear.  
Pin no.  
1
Signal  
TXD out  
RXD in  
GND  
GND  
Remarks  
1
3
6
4
2
3
4
5
6
2
5
*) Parallel with pin 11 on 12 pin con  
*) *2). WEN output if EW=1  
Trigger input  
EEN output  
Fig. 3. 6-pin connector.  
Notes.  
Plugs for cable: HR10A-7P-6S  
*)  
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.  
- 4 -  
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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  
#4/12  
#4/12  
The video output is a 75 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 termination.  
Video  
Video  
Video  
Output  
Output  
Output  
CXA1310  
CXA1310  
CXA1310  
3
3
0
0
0
0
mV  
mV  
300 mV  
75  
75  
75  
32  
32  
32  
BNC  
BNC  
BNC  
5
5
0
0
0
0
mV  
mV  
500 mV  
NC  
NC  
NC  
GND  
GND  
GND  
In the composite signal, there are no equalize  
and serration pulses in the vertical sync.  
Fig. 4. Video output.  
5.3.2. Trigger input  
+12v  
JP1  
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.  
#11/12 JP4  
100  
+5V  
Trigger  
input  
33k  
33k  
1k  
100n  
#5/6  
TTL  
100k  
The trigger polarity can be changed.  
Trigger input level 4 V ±2 V.  
The trigger-input impedance is 1 k.  
JP1 and JP4 are for alternative  
1k  
1k  
NC  
1n  
GND  
GND  
configuration for pin #10.  
Fig. 5. Trigger input.  
From VD HD  
output  
+5V  
5.3.3. HD and VD input  
33k  
+
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.  
VD HD  
Input/output  
10µ 1k2  
TTL  
SW1  
1k  
47p  
75  
SW2  
1n  
4k7  
GND  
Fig. 6. HD and VD input.  
5.3.4. HD, VD, PCLK, WEN and EEN output  
+5V  
VD, HD  
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 75. (No  
termination).  
10k  
TTL  
SW1  
220  
10k  
WEN/ EEN  
PCLK  
67  
#6/6  
10  
10  
JP2  
#9/12  
#10/12  
WEN  
JP5  
JP3  
The WEN polarity can be changed.  
Signal on pin #6/6 can be changed.  
GND  
Fig. 7. HD, VD, PCLK, WEN and EEN output.  
- 5 -  
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CV-A1-20  
5.4. CV-A1 Block Diagram  
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  
SH Shutter Speed  
Normal shutter, Programmable Exposure  
Off to 1/140,000 second  
PE Programmable Exposure 1.3 H to 1023.3 H  
SC Scanning Format  
BI Binning  
TR Trigger Mode  
Full frame, 1/2 partial, 1/3, 1/6 partial  
Off, vertical, horizontal, vertical + horizontal  
Normal, Edge, PWC, frame delay readout  
Long time exposure, start-stop, smearless (Edge)  
Sync., async.  
HC HD Accumulation  
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  
1380 pixels  
Partial scanning.  
Aspect ratio correct  
Fig. 9. Partial scanning.  
- 6 -  
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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.  
D
i
s
p
l
a
y
e
d
i
m
a
g
e
w
i
t
h
binning  
binning  
Xsg1  
Xsg1  
1380 ppixels  
690 piixels  
H
No V binning  
V binning  
V
id  
eo  
out  
out  
N
o
r
m
a
l
f
u
l
l
scanning.  
scanning.  
i
H
o
r
i
z
o
n
n
t
t
a
a
l
l
binning  
binning  
6
9
0
ppixels  
1
3
8
0
ppixels  
Horizontal ccd register  
S/H  
Reset  
Pclk out  
Pclk out  
f pix  
f pix  
No H binning  
H binning  
S/H  
Reset  
:2  
V and H biinning.  
Aspect rattio coorrrect  
Verticall binning  
H
b
i
n
n
i
n
g
i
s
2
:
1
.
V
i
s
2
:
1
.
T
o
g
e
t
h
e
r
i
t
i
s
a
4
:
1
bbinning  
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  
HD  
Trigger  
Trigger  
Accum  
Accum  
X
b
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  
Binning norm.  
Full scanning  
Partial scanning  
V
H
V+H Norm  
V
n
n
n
n
H
n
n
n
n
V+H  
n
n
n
TR=  
0
1
2
3
4
5
6
Remarks  
SM=0, SM=1 active  
SM=0, SM=1 active  
HC=0, HC=1 active  
HC=0, HC=1 active  
Normal  
n
n
n
n
Edge Pre-sel.  
Pulse Width  
Fr. Delay r.o.  
Long Time int  
Start/Stop  
n
n
n
n
SM=0, SM=1 active  
Smearless  
n
Described mode  
Non-described mode combination, which will work  
- 7 -  
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CV-A1-20  
6.2. Input-output of HD/VD Signals  
In the default setting the camera will accept external HD/VD signals on pin 6 and 7 of the 12 pin  
Hirose connector. If external HD/VD is applied, the camera will synchronize to it. If no external  
sync signals are applied, the camera will operate with its internal x-tal controlled sync. The  
camera scanning system should be set to the same as the external connected sync. In fig. 13  
below, the time requirements to relation between VD and HD are shown. The high to low  
transition for the external VD pulse should be placed within the 68 µsec. time interval to HD.  
The input is TTL level as factory setting. It can be 75 Ohm terminated by the internal switch on  
the PK8342A board. SW2-1 for HD and SW2-2 for VD. On for 75 Ohm termination.  
To output the internal HD/VD signals on pin 6 and 7 the internal switch SW1-1 and 1-2 on the  
PK8342A board should be set ON. The output is TTL level from a 75-Ohm source.  
Fig. 14 below shows the switch positions.  
To use this mode:  
Set function:  
SW 1 on PK8342A to IN for external VD/HD input. Factory default.  
SW 2 on PK8342A to 75 for termination of VD/HD.  
SW 2 on PK8342A to TTL for TTL level for VD/HD. Factory defaults.  
SW 1 on PK8342A 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 continuous VD out, only after each trigger input.  
Ext. HD  
Ext. VD  
>1H  
Fig. 13. Ext. HD and ext. VD phase conditions.  
HD VD  
OUT  
IN  
75Ω  
TTL  
HD VD  
Fig. 14. Switch positions for int./ext. sync and termination.  
- 8 -  
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CV-A1-20  
6.3. Continuous Operation (Non triggered)  
Trigger Mode Normal. TR=0. It is for applications where the camera is continuous running  
without external trigger. In normal mode the shutter mode can be normal or programmable  
exposure. (SM=0 SM=1). The shutter will work in all 16 steps up to 1/140,000 second or with the  
programmable exposure in 1023 steps. In partial scanning and binning modes, shutter times  
longer than the actual frame time has no meaning. The exposure will be equal the frame time.  
If external synchronizing is used input external HD and VD signals.  
To use this mode:  
Set function:  
Trigger mode  
TR=0  
Shutter mode “Normal” or “Programmable”  
“Shutter Speed”  
“Programmable exposure”  
SM=0, SM=1  
SH=0 through 15  
PE=1 through 1023  
Input:  
Ext. VD on pin 7 on 12-pin connector. If used.  
Ext. HD on pin 6 on 12-pin connector. If used.  
Important notes on using this mode  
External sync system should follow the camera scanning and binning system.  
1clk = 50 ns  
Fig. 15. Horizontal timing details and pixel numbering for the CCD array.  
1H = 83.6 µs  
No equalize and serration pulses  
Fig. 16. Vertical timing details and lines numbering for the CCD array.  
- 9 -  
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CV-A1-20  
6.4. External Trigger Modes  
This camera has 6 external asynchronous trigger modes, which can be set by RS-232C commands.  
1.  
2.  
3.  
4.  
5.  
6.  
Edge Pre-select Mode.TR=1  
Pulse Width Control Mode. TR=2  
Frame Delay read out mode. TR=3 PWC exposure read out by ext. VD. (HC=0, HC=1)  
Long Time Exposure Mode. TR=4  
Start/stop Mode. TR=5  
Pre-selected exposure. (SM=0, SM=1)  
Pulse width controlled exposure. (HC=0, HC=1)  
Exposure is interval between ext. VD.  
Exposure start by trigger and stop by ext. VD  
Pre-sel. exp. after dummy readout. (SM=0, SM=1)  
Smearless Read out mode. TR=6  
The default accumulation is HD synchronously accumulation (HC=0). The accumulation starts at  
the first HD after the trigger leading edge. Fig. 18. To avoid the <1H jitter caused by this delay,  
synchronize the external trigger to HD as shown in fig. 17 below. The trigger level translations  
should be placed inside the 8 + 4 µseconds.  
In PWC mode (TR =2) and Frame Delay readout (TR=3), the accumulation mode HC can be set to  
asynchronous accumulation (HC=1). The exposure will start immediately at the leading edge of  
the trigger pulse without waiting for the HD. Fig. 19. below.  
In Edge pre-select TR=1 and smearless TR=6, the shutter mode can be SM=0 or SM=1.  
8
µ
s
4
µ
s
8
8
µ
µ
s
s
4
4
µ
µ
s
s
E
x
t
.
H
D
D
T
R
IG  
IG  
>>11HH  
Fig. 17. Trigger/HD Timing.  
t33  
t
t44  
t
t55  
t
t11  
t
t22  
t
HD  
HD  
HD  
Trigger  
Trigger  
Trigger  
Accum  
Accum  
Accum  
Xsub  
Xsub  
Xsub  
Xsg  
Xsg  
Xsg  
EEN  
EEN  
EEN  
Fig.18. Pulse Width H Synchronous Accumulation  
t11  
t
t33  
t
t22  
t
t44  
t
H
H
D
D
T
T
r
r
i
i
g
g
g
g
e
e
r
r
A
A
ccum  
ccum  
X
X
s
s
u
u
b
b
X
X
sg  
sg  
E
E
E
E
N
N
Fig. 19. Pulse Width H Asynchronous Accumulation.  
Note: Xsg and Xsub are internal signals in the camera. They are shown in the timing diagram for better understanding.  
- 10 -  
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CV-A1-20  
6.5. Edge Pre-select Mode  
The exposure starts at the first HD pulse after the trigger leading edge. It stops and is read out  
after the duration of the shutter time selected. It can be the first 9 step in normal or 1023 steps  
in programmable shutter. SM=0 or SM=1. Shutter selections SH 10 will result in 1/8381 sec. This  
mode will operate with full and partial scanning and with all binning modes. Partial scanning  
together with binning will work, but it is not described, and no timing diagrams are documented.  
An EEN pulse will indicate the active accumulation time, and a WEN pulse indicates that the  
resulting video is being read out.  
To use this mode:  
Set function:  
Trigger mode “Edge Pre-select”  
Shutter mode “Normal” or “Programmable”  
“Shutter Speed”  
TR = 1  
SM=0, SM=1  
SH=0 through 9  
PE=1 through 1023  
“Programmable exposure”  
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 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 fig. 17.  
The duration of the trigger should be >1H to <2000H.  
A new trigger must not be applied before WEN is high.  
In trigger modes there are no continuous VD out, only after each trigger input.  
1H = 83.6 µs  
No equalize and serration pulses.  
Table showing the figures for the different modes.  
A
B
C
D
E
Max frame rate Remarks  
CCD array line # Effective video  
Scan mode  
Full  
fps  
11  
20  
28  
46  
11  
22  
22  
10H 14H 4 to 1038  
17H 33H 271 to 783  
17H 33H 357 to 697  
17H 33H 442 to 612  
10H 14H 4 to 1038  
10H 14H 18 to 1019  
1035H  
513H  
341H  
171H  
1035H  
501H  
501H  
18H  
25H  
25H  
25H  
18H  
18H  
18H  
1/2 Partial  
1/3 Partial  
1/6 Partial  
H binning  
V binning  
V+H binning 10H 14H 18 to 1019  
Fig. 20. Timing for Edge Pre-select with partial scanning and binning.  
- 11 -  
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CV-A1-20  
6.6. Pulse Width Control Mode  
In this mode the exposure starts from the leading edge of the trigger pulse. It stops at the  
trailing edge of the trigger pulse, and the resulting video is read out. The accumulation can be  
either H synchronous or H asynchronous. HC=0 or HC=1. In H synchronous mode the accumulation  
starts at the first HD pulse after the leading edge of the trigger. It can result in <1H jitter if the  
trigger is not synchronized to H. In H asynchronous mode the accumulation starts immediately  
after the leading edge of the trigger. (The internal H is not reset.)  
This mode will operate with full and partial scanning and with all binning modes. Partial  
scanning together with binning will work, but it is not described, and no timing diagrams are  
documented. An EEN pulse will indicate the active accumulation time, and a WEN pulse  
indicates that the resulting video is being read out.  
To use this mode:  
Set function:  
Trigger mode “Pulse Width Controlled”  
“H accumulation”  
TR = 2  
HC=0 or HC=1  
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.  
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 fig. 17.  
With HC=1 the exposure will start immediately. Refer to fig. 18 and fig. 19.  
The duration of the trigger can be >1H to <2000H.  
A new trigger must not be applied before WEN is high.  
In trigger modes there are no continuous VD out, only after each trigger input.  
1H = 83.6 µs  
No equalize and serration pulses.  
Table showing the figures for the different modes.  
A
B
C
D
E
Max frame rate Remarks  
CCD array line # Effective video  
Scan mode  
Full  
fps  
11  
20  
28  
46  
11  
22  
22  
10H 14H 4 to 1038  
17H 33H 271 to 783  
17H 33H 357 to 697  
17H 33H 442 to 612  
10H 14H 4 to 1038  
10H 14H 18 to 1019  
1035H  
513H  
341H  
171H  
1035H  
501H  
501H  
18H  
25H  
25H  
25H  
18H  
18H  
18H  
1/2 Partial  
1/3 Partial  
1/6 Partial  
H binning  
V binning  
V+H binning 10H 14H 18 to 1019  
Fig. 21. Pulse Width Control trigger mode  
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CV-A1-20  
6.7. Frame-delay read out Mode  
In this mode the exposure starts from the leading edge of the trigger pulse. It stops at the  
trailing edge of the trigger pulse. The accumulation can be either H synchronous or H  
asynchronous. HC=0 or HC=1. In H synchronous mode the accumulation starts at the first HD  
pulse after the leading edge of the trigger. In H asynchronous mode the accumulation starts  
immediately after the leading edge of the trigger. (The internal H is not reset.) The resulting  
video is read out after an external VD pulse is applied. This mode will operate with full and  
partial scanning and with all binning modes. Partial scanning together with binning will work,  
but it is not described, and no timing diagrams are documented.  
An EEN pulse will indicate the active accumulation time, and a WEN pulse indicates that the  
resulting video is being read out.  
To use this mode:  
Set function:  
Trigger mode “Frame-delay read out”  
“H accumulation”  
TR = 3  
HC=0 or HC=1  
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.  
With HC=0 the start of exposure will start synchronized to the internal H signal, the start  
of exposure may be shifted max 1H. To avoid this shift (jitter), synchronize the camera to  
an external HD and make sure that the trigger pulse aligns to the HD as shown in fig. 17.  
With HC=1 the exposure will start immediately. Refer to fig. 18 and fig. 19.  
The duration of the trigger can be>1H to<2000H.  
A new trigger must not be applied before WEN is high.  
In trigger modes there are no continuous VD out, only after each trigger input.  
1H = 83.6 µs  
No equalize and serration pulses.  
Table showing the figures for the different modes.  
A
B
(CCD array line #)  
Binning  
Normal  
H
V
V+H  
4 to 1038  
4 to 1038  
18 to 1019  
18 to 1019  
1035H  
1035H  
501H  
501H  
Fig. 22. Frame Delay read out mode  
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CV-A1-20  
6.8. Long Time Exposure Mode  
The exposure time is the interval between 2 external VD pulses sent to the VD input. The  
exposure starts after the input of a VD, and it ends after the next VD input, which again starts a  
new exposure. The interval between the external VD pulses (exposure time) can be from V to .  
Thermal and dark current noise will increase by accumulation time, therefore the exposure time  
is not recommended to exceed 2 seconds (or 30 V periods). The external applied sync system  
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”  
Polarity and other functions  
TR = 4  
Input:  
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.  
Depending of the temperature, it is not recommended to use integration time >2 sec.  
1H = 83.6 µs  
No equalize and serration pulses.  
No equalize and serration pulses.  
Fig. 23. Long time exposure  
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CV-A1-20  
6.9. Start/Stop Mode  
The exposure is controlled by the interval between the external trigger pulse and an external VD  
pulse. The exposure start at the first HD pulse after the trigger leading edge, and it stops after  
the rising edge of the VD. An EEN pulse will indicate the active accumulation time, and a WEN  
pulse indicates that the resulting video is being read out.  
The shortest exposure time in this mode is >1.3H.  
The longest exposure time is <2000 H.  
To use this mode:  
Set function:  
Trigger mode “Start/Stop Mode”  
Polarity and other functions  
TR = 5  
Input:  
Ext. trigger to pin 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 fig. 17.  
The duration of the trigger should be >1H.  
A new trigger must not be applied before WEN is high.  
In trigger modes there are no continuous VD out, only after each trigger input.  
1H = 83.6 µs  
No equalize and serration pulses.  
Fig. 24. Start/Stop mode  
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CV-A1-20  
6.10. Smearless Mode  
This mode will reduce the unwanted smear signal from a highlighted scene when a short  
exposure time is used. The trigger mode is like edge pre-select, but a dummy readout is  
performed before the active accumulation is started. It will remove the smear above the  
highlighted parts in the image, but there is still smear left below highlighted areas.  
The trigger leading edge will start the dummy readout. It takes 54 H before the exposure starts.  
The exposure stops and the resulting video signal is read out after the selected shutter time. It  
can be the 16 step normal or 1023 step programmable. SM=0 or SM=1.  
This mode will operate with full and partial scanning and with all binning modes. Partial  
scanning together with binning will work, but it is not described, and no timing diagrams will be  
documented. An EEN pulse will indicate the active accumulation time, and a WEN pulse  
indicates that the resulting video is being read out.  
To use this mode:  
Set function:Trigger mode “Smearless read out”  
Shutter mode “Normal” or “Programmable”  
“Shutter Speed”  
TR = 6  
SM=0, SM=1  
SH=0 through 9  
PE=1 through 1023  
“Programmable exposure”  
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 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 fig. 17.  
The duration of the trigger should be >1H to <2000H.  
A new trigger must not be applied before WEN is high.  
In trigger modes there are no continuous VD out, only after each trigger input.  
1H = 83 6
µ
s  
No equalize and serration pulses.  
A
B
C
D
E
Max frame rate Remarks  
CCD array line # Effective video  
Scan mode  
Full  
fps  
11  
18  
25  
38  
11  
20  
20  
10H 14H 4 to 1038  
17H 33H 271 to 783  
17H 33H 357 to 697  
17H 33H 442 to 612  
10H 14H 4 to 1038  
10H 14H 18 to 1019  
1035H  
513H  
341H  
171H  
1035H  
501H  
501H  
18H  
25H  
25H  
25H  
18H  
18H  
18H  
1/2 Partial  
1/3 Partial  
1/6 Partial  
H binning  
V binning  
V+H binning 10H 14H 18 to 1019  
Fig. 25. Smearless Mode  
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CV-A1-20  
6.11. Other Functions.  
Gain and analogue settings.  
!! Do not adjust these settings unless you have knowledge to video adjustments !!  
The video gain can be set to AGC or manual. In AGC mode the video level is kept constant by  
the automatic gain control circuit within a 12 dB range. Normal 700 mVpp ±30 mV. The level can  
be adjusted with AGC level.  
In manual gain mode, either the gain level or the rear potentiometer can adjust the level.  
Setup level. This setting can adjust the setup level (or black level). Normal 20 mVpp ±2 mv.  
White clip level. For adjusting the wanted white clip level. Normal 800 mVpp ±30 mv.  
Gamma select. Gamma can be 1 (linear) or 0.45.  
Sync signal on/off. Off will remove the composite sync signal from the video signal.  
Pixel clock on/off. Set to on if the pixel clock is used. To avoid interference the pixel clock out  
should be off when not used.  
EEN/WEN output. Will select EEN or WEN signal output on pin #6 on 6-pin connector.  
Trigger polarity. Will invert the trigger-input signal.  
WEN polarity. Will invert the WEN output signal.  
7. Configuring the Camera  
7.1. RS-232C control.  
All configuration of the CV-A1-20 camera is done via the RS-232C port. The camera can be set up  
from a PC running terminal emulator software, or using JAI´s camera control software.  
Below is the description of the ASCII based short command protocol.  
Communication setting.  
1 CD  
Baud Rate  
Data Length  
Start Bit  
Stop Bit  
9600 bps  
8 bit  
1 bit  
1 bit  
None  
4 DTR  
6 DSR  
2 RXD  
3 TXD  
5 GND  
7 RTS  
8 CTS  
9 CI  
9 pin  
TXD  
RXD  
GND  
RS 232C cable  
D-con  
PC COM  
PORT  
CAMERA  
Parity  
Xon/Xoff Control None  
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=[Parameter]  
Transmit the following to have the camera actual setting:  
ST?<CR><LF>  
The camera returns the actual parameter settings.  
Transmit the following to have a command list:  
HP?<CR><LF>  
The camera returns a complete command list.  
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CV-A1-20  
7.2. CV-A1-20 RS-232C command list.  
Command Name  
A – General settings and useful commands  
EB Echo Back  
ST Camera Status request ST?<CR><LF>  
Format  
Parameter  
Remarks  
Off at power up  
Actual setting  
0=Echo off  
1=Echo on  
EB=[Param.]<CR><LF>  
Command list  
HP Online Help request  
VN Firmware version  
HP?<CR><LF>  
VN?<CR><LF>  
3 letter version  
10 characters *3)  
10 characters *3)  
16 characters *3)  
ID  
Camera ID request  
ID?<CR><LF>  
MD Model name request  
UD User ID  
MD?<CR><LF>  
UD=[Param.]<CR><LF>  
Save and load user text  
B – Timing and shutter related commands  
SC Scanning format  
0=full frame  
2=1/3 partial  
0=normal  
2=Pulse width  
4=Long time  
6=Smearless  
0=Normal  
1=1/2 partial  
3=1/6 partial  
1=Edge  
3=Frame delay  
5=Start/stop  
SC=[Param.]<CR><LF>  
TR Trigger mode  
TR=[Param.]<CR><LF>  
SM Shutter mode  
SH Shutter speed  
1=Programmab.  
1=1/21  
3=1/70  
SM=[Param.]<CR><LF>  
SH=[Param.]<CR><LF>  
All16 step is valid  
in normal trigger  
mode.  
0=Off  
2=1/42  
4=1/175  
5=1/349  
6=1/698  
8=1/2794  
7=1/1397  
9=1/5587  
In all trigger  
modes shutter  
speeds higher  
than 9 will result  
in 1/8381  
10=1/14,000  
12=1/56,000  
14=1/112,000  
0=1.3 H, 1=1.3H  
0=off  
11=1/28,000  
13=1/84,000  
15=1/140,000  
1023=1023.3 H  
1=vertical  
H= 83.6 µsec  
PE Programmable expos.  
PE=[Param.]<CR><LF>  
BI=[Param.]<CR><LF>  
*1)  
BI  
Binning  
2=horizontal  
0=H synchron  
accumulation  
3=hor. + ver.  
1=a-synchron  
accumulation  
a-sync. only for  
TR=1 and TR=3  
HC HD accumulation  
HC=[Param.]<CR><LF>  
C – Signals and polarity  
SO Sync signal  
PC Pixel clock  
0=no sync  
0=no clock out  
1=sync on video  
1=clock out  
SO=[Param.]<CR><LF>  
PC=[Param.]<CR><LF>  
Should be off  
when not used  
Pin#6 on 6 pin  
EW EEN/WEN  
TP Trigger polarity  
WP WEN polarity  
0= EEN out  
0= active low  
0= active low  
1=WEN out  
1= active high  
1= active high  
EW=[Param.]<CR><LF>  
TP=[Param.]<CR><LF>  
WP=[Param.]<CR><LF>  
*2)  
D – Gain and analogue signals setting  
0= manual gain  
Range 0 to 255  
Range 0 to 255  
AS AGC Switch  
0=AGC off  
0=low  
0=low  
0=manual gain  
0=low  
0=low  
1=AGC on  
255=high  
255=high  
1=rear potm.  
255=high  
255=high  
AS=[Param.]<CR><LF>  
AG=[Param.]<CR><LF>  
GA=[Param.]<CR><LF>  
RP=[Param.]<CR><LF>  
SU=[Param.]<CR><LF>  
WC=[Param.]<CR><LF>  
GS=[Param.]<CR><LF>  
AG AGC Level  
GA Manual gain Level  
RP Rear Potentiometer  
SU Setup Level  
Range 0 to 255  
Range 0 to 255  
WC White clip Level  
GS Gamma Select  
0=gamma 1  
1=gamma 0.45  
E – Saving and loading data in EEPROM  
Latest used data  
area becomes  
default at next  
power up  
LD Load settings from  
0=Factory data 1=User 1 area  
LD=[Param.]<CR><LF>  
camera EEPROM  
2=User 2 area  
3=User 3 area  
SA Save settings to  
camera EEPROM  
EA EEPROM area request  
1=User 1 area  
3=User 3 area  
2=User 2 area  
SA=[Param.]<CR><LF>  
Return latest used  
area  
EA?<CR><LF>  
*1)  
The internal pixel clock is not changed in H binning (BI=2 and BI=3). To keep the aspect ratio correct, divided the clock by  
2 in the frame grabber.  
*2)  
*3)  
If positive logic is used (TP=1), the first trigger pulse after power up will be ignored.  
Functions implemented from s/no E121231.  
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CV-A1-20  
7.3. Camera Control Tool for CV-A1-20  
Camera Control Tool for CV-A1-20 is in principle the same as for CV-A1, only the shutter times  
downloaded.  
The control tool contents a camera control program and tools for making your own program.  
Below the different windows are shown.  
Control Bar  
Windows for all functions  
Fig. 26. Windows from Camera Tools.  
For the integrator and experienced user, the Camera Control Tool is much more 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 Windows environment.  
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CV-A1-20  
7.4. Internal Switch and Jumper Settings  
For VD and HD input/output and termination refer to “6.2. Input-output of HD/VD Signals.”  
For alternative connections of pin #10 and #11 on 12-pin connector, jumper JP1, JP2, JP3, JP4  
and JP5 can be used. Refer “5.3. Input and Output Circuits.”  
Jumper setting for alternative pin configuration for M-series camera emulating is shown below.  
Pin #  
9
9
10  
10  
11  
11  
Function  
PCLK out  
No connection  
WEN out  
Ground  
JP2  
Short  
Open  
JP3  
JP5  
JP1  
JP4  
Remarks  
Factory default setting (EIA-J standard)  
Open  
Short  
Short  
Open  
Factory default setting (EIA-J standard)  
Ext. trigger in  
+12 Volt in/out  
Open Short Factory default setting (EIA-J standard)  
Short Open  
Warning! +12 volt power out here.  
Fuse  
Fig. 27. Jumper positions.  
8. External Appearance and Dimensions  
Fig. 28. Dimensions  
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CV-A1-20  
9. Specifications  
Specifications  
CV-A1-20  
Scanning system  
Pixel clock  
Progressive 1068 lines 11.2 frames/sec.  
20.00 MHz  
Line frequency  
Frame rate for full frame  
CCD sensor  
Sensing area for video out  
Effective pixels  
Pixels in video output  
Cell size  
11.962 kHz (1672 pixel clock/line)  
11.2 frames/sec. (1068 lines/frame)  
1/2” progressive monochrome IT CCD  
6.42 (h) x 4.81 (v) mm  
1392 (h) x 1040 (v)  
1380 (h) x 1035 (v)  
4.65 (h) x 4.65 (v) µm  
Resolution horizontal  
Sensitivity on sensor  
S/N ratio  
1000 TV lines  
0.2 Lux, Max gain, 50% video  
>50 dB  
Video output  
Composite VS signal, 1 Vpp, 75 Ω  
Video signal 0.7 Vpp (selectable)  
1.0 – 0.45  
Gamma  
Gain  
Gain range  
Synchronization  
HD sync. input/output  
Manual – Automatic  
Man. -3 to +12 dB. Aut. 0 to +12 dB  
Int. X-tal. Ext. HD/VD or random trigger  
4 V ±2 V, 75 Ω  
Trigger input  
4 V ±2 V, 1kinput impedance  
4 V ±2 V, 75 Ω  
4 V ±2 V, 75 Ω  
4 V ±2 V, 75 Ω  
Full, 2:1 H binning, 2:1 V binning, H+V binning  
WEN output (write enable)  
EEN output (exposure enable)  
Pixel clock output  
Read out modes for full frame  
Read out partial scan vertical  
Trigger  
Accumulation by trigger  
Shutter speed. Fixed  
(Full frame only)  
Shutter speed in trigger modes  
Programmable exposure  
Pulse width control  
Long time exposure  
Start/stop exposure  
Full, 1/2, 1/3, 1/6  
Continuous, Edge pre-select, Pulse width control, frame delay  
H synchronized/ (H non synchronized. In PWC and frame delay only)  
1/11, 1/21, 1/42, 1/70, 1/175, 1/349, 1/698, 1/1400, 1/2800, 1/5587, 1/14,000, 1/28,000,  
1/56,000, 1/84,000, 1/112,000, 1/140,000 second  
Max. 1/5587 second. (1/8381 for settings >1/5587)  
1.3 H to 1023.3 H in 1 H step  
1.3 H to 2000 H  
<2 sec. (Interval between ext. VD)  
1.3 H to – 2000 H  
(Time from trigger to ext. VD)  
Frame delay readout PWC  
Delay in frame delay readout mode  
Smearless readout  
Functions controlled by internal DIP  
switches  
Functions controlled by  
RS 232C short commands  
Communication Baud rate  
Operating temperature  
Humidity  
1.3 H to 2000 H  
< 2 seconds (Time from PWC trigger input to ext. VD input.)  
For edge pre-select mode only  
VD input/output, HD input/output  
HD, VD 75 termination on/off  
Shutter speed, shutter mode, Trigger mode, Readout mode, polarity,  
Sync. on/off, Programmable exposure, Gain levels, Gamma and RS 232C Commands  
9600 bps  
-5°C to +45°C  
20 – 80% non-condensing  
Storage temp./humidity  
Power  
-30°C to +60°C/20% - 90 % non-condensing  
12V DC ± 10%. 1.8 W  
Lens mount  
C-mount  
Dimensions  
29 x 44 x 66 mm (HxWxD)  
Weight  
150g  
Spectral Sensitivity  
1.0  
0.8  
0.6  
0.4  
0.2  
0.0  
400  
500  
600  
700  
800  
900  
1000  
Wave lenght (nm)  
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CV-A1-20  
10. Appendix  
10.1. Precautions  
Personnel not trained in dealing with similar electronic devices should not service this camera.  
The camera contains components sensitive to electrostatic discharge. The handling of these  
devices should follow the requirements of electrostatic sensitive components.  
Do not attempt to disassemble this camera.  
Do not expose this camera to rain or moisture.  
Do not face this camera towards the sun, extreme bright light or light reflecting objects.  
When this camera is not in use, put the supplied lens cap on the lens mount.  
Handle this camera with the maximum care.  
Operate this camera only from the type of power source indicated on the camera.  
Power off the camera during any modification such as changes of jumper and switch setting.  
10.2. Typical CCD Characteristics  
The following effects may be observed on the video monitor screen. They do not indicate any  
fault of the CCD camera, but do associate with typical 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 may appear.  
Blemishes  
Some pixel defects can occur, but this does not have en effect on the practical operation.  
Patterned Noise  
When the CCD camera captures a dark object at high temperature or is used for long time  
integration, fixed pattern noise (shown as white dots) may appear on the video monitor screen.  
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CV-A1-20  
11. Users Record  
Camera type:  
CV-A1-20  
Revision:  
Serial No.  
(Revision B)  
……………..  
Users Mode Settings  
Users Modifications  
DECLARATION OF CONFORMITY  
AS DEFINED BY THE COUNCIL DIRECTIVE  
89/336/EEC  
EMC (ELECTROMAGNETIC COMPABILITY)  
WE HEREWITH DECLARE THAT THIS PRODUCT  
COMPLIES WITH THE FOLOWING PROVISIONS APPLYING TO IT.  
EN-50081-1  
EN-50082-1  
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.  
JAI A-S, Denmark  
Phone +45 4457 8888  
Fax +45 4491 8880  
JAI UK Ltd., England  
Phone +44 1895 821 481  
Fax +44 1895 824 433  
JAI Corporation, Japan  
Phone +81 45 440 0154  
Fax +81 45 440 0166  
JAI PULNiX Inc., USA  
Phone (Toll-Free) +1 877 472 5909  
Phone +1 408 747 0300  
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