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N23 CCD CAMERA
FOR X-RAY IMAGE INTENSIFIER
N23 Series CCD CAMERA
The N23 CCD camera, manufactured using printed circuit board with SMD technology, offers better performance than
NICAL’ s well know N20 camera system. It uses the same camera head of CCD camera N20 and the same wiring and controls.
All previously offered configurations are available in the new system along with vertical-horizontal inversion and continuous
360° rotation. Digital integrated image processing has been changed from 9 to 10 bit output resolution for better performance.
This new system allows obtaining 512 frames memory with icons and numbered frames displayed. These new characteristics
put the new N23 CCD at the top of the standard resolution CCD cameras for x-ray image intensifier and radiological
applications.
A very important new feature is DRF
(Dynamic Recursive Filter) which allows
changing pixel by pixel the recursive filter
factor. This type of filter offers better
photonic noise reduction, eliminating also
image persistence during patient movement.
This new camera has been designed using the
latest image CCD sensor available. A very small
dimension and particular resistance make it
useful in such applications as mobile C-arm. The
sensor unity gamma gives a very good
improvement in image contrast. The interline
transfer CCD is suitable for use with pulsed
fluoroscopy and can be used with 25 pulses per
second as a Vidicon progressive scan camera.
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CCD Camera Head
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High resolution Charge Coupled Device sensor
(CCD)
Video preamplifier
Pulses and sync generator
Power supply circuitry to CCD camera head
Image rotation system (optional) 360°
Standard lens system
The camera head is connected to the camera control
unit by means of an extremely flexible, small
diameter (6mm) cable, which may be several tens
meters in length
White spot erasing (option)
Control unit (CCU RACK)
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Main power supply: 20÷30Vdc input
Video processing and output amplifier
Pulses and sync generator
Analog and digital output automatic kV
or mA control circuit
Electronic circle generator (picture
delimitation)
Digital recursive filter for noise reduction,
with DRF (Dynamic Recursive Filter)
Horizontal and vertical image inversion
Video output standard 625/525, 1249/1049,
625-100Hz or 525/120Hz
Options: Up to 512 frames memory with two
independent digital out channels.
Option: User friendly interface with icons
for operation running
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As a result of very high dynamic range of the sensor, this camera excels in applications of non-destructive control test (NDT),
in which one can find a high difference in brightness from one point to another in the same image. Included in the N23 series
are various models. All start with the basic CCD TV chain which can be added to a separate memory unit or to a complete
system with memory, integral optical lens and image rotation.
CCD camera includes a 16 bit digital frame
memory with recursive filter integration and/or
Dynamic Recursive Filter (DRF).
The new store options allow up to 512 frames
memory. User can choose through various
acquisition frame rate (max 25 fr/sec) and
modality of using: continuous cine loop and/or
controlled single image visualization.
Every frame is displayed with corresponding
acquisition sequence number identified.
Easy functionality is guaranteed by new userfriendly interface based on displayed icons at
border of the screen indicating running
operation.
New memory boards support two independent
video out channels A and B. User can select
live image on monitor A and stored image on
monitor B or any possible combination of two
different stored images on monitor A and B.
Cine-loop can record and play at full 30
images per second or can run at reduced
frame-rate for longer time.
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Technical Data
Available CCD scanning system
:
CCIR 625/50
EIA 525/60
Scanning aspect ratio:
CCD Camera Head
:
CCD Type:
Integrated optical lens system:
Image intensifier output screen:
Mounting frames:
interlaced
interlaced
(752 x 582 pixels)
(768 x 494 pixels)
4:3
½” Interline low blooming CCD sensor (470.000 pixels)
High resolution with adjustable focus and diaphragms
From 15 to 40mm diameter.
From 6” inch to 16” inch I.I.
CCD / CCU Characteristics
:
Resolution:
Gamma correction:
Video output A/D converter:
Video Bandwidth:
DRF (Dynamic Recursive Filter):
MD (Motion Detection):
Standard Recursive filter:
Memory:
Automatic video level compensation:
Automatic x-ray kV/mA compensation:
Dynamic contrast compensation for better image uniformity:
Very high dynamic video amplifier:
High precision electronic circle:
Video output signal:
Video output standards
20 lines-pairs (on 6” image intensifiers)
0.4 or 1
10 bits
20 MHz ± 3dB
Yes (N23H)
Yes (N23)
Factor 2,4,8,16
16 bits
Yes
Yes. Analog and digital (up/down)
Yes (shading)
Yes
Yes
1 Vpp (0.3 Vpp Sync)
:
Analog Main board (Video 1):
1 BNC 75Ω - ( CCIR 625/50 or EIA 525/60 )
Digital Main board (Video 2 )
recursive filter and/or DRF & LIH & frame stored:
1 BNC 75Ω - ( CCIR 625/50 or EIA 525/60 )
Digital processing board (Video 3)
(Video 4):
Operating conditions
:
Working temperature range:
Store temperature range:
Humidity:
2 BNC 75Ω
CCIR 625/50
EIA 525/60
CCIR 1249/50
EIA 1049/60
CCIR 625/100Hz
EIA 525/120Hz
interlaced
interlaced
interlaced
interlaced
interlaced
interlaced
-10°C to +45°C
-40°C to +55°C
Operating to 95% relative humidity (non-condensing)
Mechanical specifications
:
Control unit: dimension (WxDxH)/ Weight :
Camera head: dimension (φ x H)/Weight :
Available power supply
226 x 120 x 46mm
0,550 Kg
(Standard)
85x87mm 0,460 Kg
(with Rotation) 101x87mm 1,1 Kg
:
24Vdc ± 20%
Approvals
:
Safety:
EMC:
EN 60601-1
EN 60601-1-2
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Others:
Options
CE-label according 93/42 CEE directive for medical devices
UL certifications
:
360° Continuous rotating camera head (with slip ring)
C-Mount
Zoom lens
Neutral density filter: 25% or 50% light transmission
White spot erasing
How to order
Main Digital Board
N23
50 N
H
Processing Board
Memory Board
0
1
A
50 CCIR 625/50
60 EIA 525/60
N
R
1
No Frames
32 Frames
Normal
Rotation
A
Main analog board only
I
Digital+ H/V Inversion +
standard recursive filter
H
Digital + H/V Inversion +
DRF (Dynamic Recursive
Filter) + white spot erasing
N
0
1
2
3
Video 1
525 / 625
525 / 625
525 / 625
525 / 625
625 50Hz
525 60Hz
Video 2
--525 / 625
525 / 625
525 / 625
625 50Hz
525 60Hz
Video 3 - Video 4
----525 / 625
1049 / 1249
625 100Hz
525 120Hz
Video 1 from main analog board
Video 2 / 3 / 4: LIH & recursive filter & memory if present
APPROVALS
EN 60601-1
EN 60601-1-2
EN 60950
0123
Safety
EMC
Safety information
CE-label according 93/42 CEE directive for medical devices.
N23 CCD cameras are UL products recognized for USA and Canada market
Note: We reserve the right to make any modifications.
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MANUFACTURER:
Issue: October 2010
NICAL SPA
Via Soffredini, 43
http:\\www.nical.com
20126 MILANO
ITALY
P.IVA 06402310152
Phone +39 022571110
Fax
+39 022572207
email: nical@nical.com
Web site: