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 75Ω. SW1.1 on for HD out.
*) SW2.2 on for75Ω. 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 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.
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 kΩ.
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 75Ω. (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 Ω 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.
9µ s
48µ s
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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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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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
- 12 -
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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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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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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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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.
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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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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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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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.
Fig. 27. Jumper positions.
8. External Appearance and Dimensions
Fig. 28. Dimensions
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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, 1kΩ input 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 Ω 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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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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