Transcript
High-Quality Monochrome and StillColor Image Acquisition Boards PCI-1408, PXI-1408
PCI-1408, PXI-1408 Acquisition of up to 4 standard or nonstandard video sources Monochrome and StillColor acquisition Variable-scan acquisition (5 to 20 MHz) Interlaced/noninterlaced acquisition Aspect ratio correction control Synchronized pixel clock inputs Adjustable acquisition window up to 1 Mpixels Pixel jitter less than 5 ns 256-byte lookup table Antichrominance filter Triggering 4 external triggers/digital I/O lines RTSI synchronization bus for DAQ Partial image scanning Onboard programmable region of interest Onboard pixel decimation
Programmable gain and offset PCI, PXI, and CompactPCI bus interface Transfer rates up to 132 Mbytes/s NI-IMAQ Software Windows NT/98/95 Mac OS (PCI-1408 only) Application Software LabVIEW BridgeVIEW LabWindows/CVI IMAQ Vision for LabVIEW and BridgeVIEW LabWindows/CVI ComponentWorks (ActiveX)
Applications
For machine vision and scientific imaging end users who are looking to reduce costs, the National Instruments IMAQ 1408 Series offers easy-to-use image acquisition driver and camera configuration software for standard and nonstandard cameras. The IMAQ 1408 Series boards deliver very accurate monochrome and StillColor image acquisition. In addition, the boards are loaded with flexible features to speed up image acquisition and processing, such as onboard programmable region of interest, decimation, and lookup table processing. The IMAQ 1408 Series boards are shipped with the NI-IMAQ image acquisition driver software and IMAQ Configuration Utility for hassle-free configuration of RS-170, CCIR, NTSC, PAL, and nonstandard cameras. Plus, using the NI-IMAQ driver software, you can control the board without any register-level programming. For high accuracy, the 1408 features an adjustable pixel aspect ratio control that corrects for imperfections at the camera sensor. Using the adjustable aspect ratio control, you can ensure that each pixel is square, which results in higher image accuracy. The IMAQ PCI-1408 Series speed-enhancing features include onboard programmable region of interest and decimation tools. Using the region of interest tools in NI-IMAQ, you can configure the board to transfer only a subset of the image to PC memory for processing. The result is fewer pixels to process. For example, if you reduce a 640x480 image to a 400x400 image, you can speed up your processing by operating on 48 percent fewer pixels. In addition, use the onboard decimation feature to scale the image by removing every second, fourth, or eighth pixel.
The high-accuracy IMAQ 1408 Series boards are ideal for both industrial and scientific environments. An IMAQ 1408 is a highperformance, versatile solution for a wide range of vision applications, such as assembly line product inspection and biological cell counting.
Hassle-Free Camera Configuration Easily configure standard and nonstandard video capture with the IMAQ Configuration Utility delivered with NI-IMAQ. This utility is a interactive tool for setting the camera type (RS-170, CCIR, NTSC, and PAL), programmable region of interest, aspect ratio, and antichrominance filter. Use this interactive utility to set up acquisition from noninterlaced progressive scan cameras and to create your own camera configurations for nonstandard video. Use the External Lock feature to set variable scan acquisition for microscopes and other sources that generate their own pixel clock and horizontal and vertical synchronization signals.
Image Acquisition
Overview
Image Acquisition Performance Gains with Partial Image Scanning For improved throughput and processing bandwidth, the acquisition and region-of-interest control circuitry monitors the incoming video signal and routes the active pixels to the FIFO. In addition to being able to digitize an entire frame, an IMAQ 1408 can perform pixel and line scaling (decimation) and region-of-interest acquisition. With pixel and line scaling, multiples (2,4,8) of pixels and/or lines can be transferred to the
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PCI-1408, PXI-1408
High-Quality Monochrome and StillColor Image Acquisition Boards PCI bus. Using region-of-interest acquisition, you select an area in the acquisition window that will be transferred to the PCI bus.
StillColor Image Acquisition Use StillColor image acquisition to acquire high-quality NTSC, PAL, and RGB color images. Using StillColor acquisition, the image quality is better but the image acquisition rate is slower than traditional composite video. For StillColor acquisition, an IMAQ 1408 acquires multiple image frames, then the StillColor algorithm reconstructs NTSC and PAL composite color video at up to 2 frames/s. For NTSC and PAL (because multiple frames are used to reconstruct the image,) the result is better overall signalto-noise ratio. Use StillColor in applications where there is little or no motion in the image field because multiple frame acquisition will cause blurring in the image. You can also use StillColor to acquire RGB images using three video inputs of an IMAQ 1408, at rates up to 10 RGB frames/s.
Hardware
edge, or each line can be used as digital I/O. The lines can also be mapped to onboard status values (CSYNC, Acquisition In Progress, and Acquisition Complete).
PCLK, HSYNC, VSYNC Mux With the PCLK, HSYNC, and VSYNC multiplexer, the acquisition control circuitry can select either the clock and synchronization signals that are generated by the GenLock and Synchronization circuitry, or the clock and synchronization signals received from the I/O connector.
GenLock and Synchronization Circuitry The GenLock and Synchronization circuitry receives the incoming video signal and generates a PCLK, HSYNC, and VSYNC for use by the acquisition and control circuitry. The PCLK is generated and controlled using the Voltage Controlled Oscillator (VCO) and Phase-Locked Loop (PLL) circuitry. Using the GenLock feature, you can synchronize multiple cameras and multiple 1408 boards.
PCI Interface
Image Acquisition
The PCI interface, which is implemented with a National Instruments MITE ASIC, is capable of transferring data at a maximum rate of 132 Mbytes/s in master mode to maximize the use of the available PCI bandwidth. The interface logic ensures that the IMAQ 1408 meets the loading, driving, and timing requirements of the PCI specification.
CSYNC Mux With the CSYNC multiplexer, the GenLock and Synchronization circuitry can select either the composite synchronization signal, which is internally generated, or the composite synchronization signal received from the I/O connector.
Video Mux Scatter-Gather DMA Controllers An IMAQ 1408 has three independent onboard DMA controllers. The DMA controllers are capable of transferring data between the PCI bus and the onboard FIFO. Each of these controllers performs scatter-gather DMA, which means the DMA controller can reconfigure on the fly, and thus perform continuous image transfers to either contiguous or fragmented buffers.
FIFO An IMAQ 1408 has a 4 KB FIFO used for temporary storage of the image being transferred to the PCI bus. With the 4 KB FIFO size more than four full video lines can be stored in the FIFO during image acquisition.
DAQ Synchronization The RTSI bus or the PXI trigger bus provide a flexible synchronization scheme between your IMAQ 1408 and any National Instruments IMAQ or DAQ device.
Using the video multiplexer circuitry, you can select any of the four AC-coupled video inputs.
Antichrominance Filter An IMAQ 1408 has an antichrominance filter, which can remove chrominance information from a color video signal. There are two software selectable anti-chrominance filters – one for NTSC color coded signals (a 3.58 MHz notch filter), and another for PAL color coded signals (a 4.43 MHz notch filter).
8-Bit A/D and Look-Up Table The image digitization is performed by an 8-bit flash A/D converter. Once the image is digitized, the result is passed to a 256 x 8 RAM look-up table (LUT). The LUT can be configured to implement simple imaging operations such as gamma manipulation, contrast enhancement, data inversion, or any nonlinear transfer function.
Programmable Gain and Offset Trigger Control and Mapping Circuitry The trigger control and mapping circuitry routes, monitors, and drives the external and RTSI trigger lines. You can configure each of these lines to start or stop acquisition on a rising or falling
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An IMAQ 1408 has programmable gain and offset circuitry for optimizing the input signal range.
National Instruments Phone: (512) 794-0100 • Fax: (512) 683-8411 •
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High-Quality Monochrome and StillColor Image Acquisition Boards The 25-pin D-Sub connector provides connections to all Video signals (Video 0, Video1, Video 2, and Video 3 single-ended or differential), the external digital I/O lines and triggers, and external sync lines.
IMAQ Cables
IMAQ PCI-1408
The IMAQ-A2504-1 has four BNC connectors, three inputs for video and one input for digital I/O. The IMAQ A2514-1 has 14 BNC connectors for all video TRIG(0) 1 signals, digital I/O lines, and 14 CSYNCOUT TRIG(1) 2 GND 15 external sync lines. The IMAQTRIG(2) 3 GND 16 BNC-1 is a single BNC cable. TRIG(3) 4 PCLKIN-/Unused HSYNCIN-/Unused
5
VSYNCIN-/Unused
7
CSYNCIN-/Unused
8
GND VIDEO3VIDEO2VIDEO1VIDEO0-/GND
6
17 18
PCLKIN+
19
VSYNCIN+
20
CSYNCIN+
21 9 22 10 23 11 24 12 25 13
HSYNCIN+
+5V VIDEO3+ VIDEO2+ VIDEO1+ VIDEO0+
Ordering Information
BNC The external BNC connector is connected to Video 0 input. This BNC input connects to a singleended video source.
Figure 1. IMAQ 1408 I/O Connector
Kits includes the IMAQ 1408 hardware, NI-IMAQ Software, and a 2 m IMAQ-BNC-1 cable Windows NT/98/95 ....................................777361-01 Mac OS .......................................................777502-01 IMAQ PXI-1408 ..........................................777564-01
PCI-1408, PXI-1408
I/O Connector
Cables IMAQ-A2504-1 (2 m) ...................................183836-01 IMAQ-A2514-1 (2 m) ...................................184005-01 IMAQ-BNC-1 (2 m).......................................183882-02
RTSI bus cables 2 boards ......................................................776249-02 3 boards ......................................................776249-03 4 boards ......................................................776249-04 5 boards......................................................776249-05
Specifications Available Formats RS-170/NTSC ................................................. 30 frames/s interlaced CCIR-601/PAL................................................. 25 frames/s interlaced Variable scan ................................................. Programmable RGB
Pixel Clock
Internally generated Frequency range ........................................... Adjustable Pixel Aspect Ratio RS-170/NTSC ............................................. CCIR/PAL ................................................... Pixel Jitter....................................................... Lock time ....................................................... External PCLK frequency range ......................
Video Input Quantity ........................................................ Video 0.......................................................... Video (0:3)..................................................... Input impedance ........................................... Bandwidth..................................................... Antichrominance filter....................................
Gain ............................................................. Black reference .............................................. (at gain=1) ................................................ White reference ............................................. (at gain=1) ................................................
4 monochrome Single-ended (BNC) Single-ended or differential (D-Sub) 75 Ω Typical 20 MHz (-3dB) Programmable 3.58 MHz notch filter (<-25dB) 4.43 MHz notch filter (<-25dB) Programmable: 1, 1.33, 2 Programmable 0-1.26 V in 64 steps of 20 mV Programmable 0-1.26 V in 64 steps of 20 mV
±8% ±8% <5 ns <1 frame 5 to 20MHz
RTSI (on PCI-1408) Trigger lines ................................................... 4
PXI Trigger Bus (on PXI-1408) Trigger lines ................................................... 4 Bus interface .............................................. Master, slave Bus-master performance ................................ 132 Mbytes/s (ideal)
Power Requirement
A/D Conversion Gray levels ..................................................... DNL ............................................................. RMS noise ...................................................... SNR ............................................................. Sampling rate ................................................
11.0 to16.4 MHz
Image Acquisition
Pulse width.................................................... 20 ns VIH (TTL)......................................................... 2 V VIL (TTL).......................................................... 0.8 V
Typical for 25 °C unless otherwise stated
+5 VDC (±5%) ............................................... 1.25 A ±12 VDC (±5%) ............................................. <100 mA
256 (8 bits) ±1 LSB maximum < 0.5 LSB rms Typical 48dB 5 MHz to 20 MHz
Physical Dimensions PCI ............................................................ 10.7 by 17.5 cm (4.2 by 6.9 in.) PXI............................................................. 10 by 16 cm (3.9 by 6.3 in.)
External Synchronization and Trigger Signals
Environment
Trigger sense ................................................. Trigger level .................................................. PCLKIN sense ................................................. PCLKIN level................................................... HSYNCIN sense.............................................. HSYNCIN level ............................................... VSYNCIN sense .............................................. VSYNCIN level................................................ CSYNCIN sense ..............................................
Operating temperature.................................. 0 to 55 ˚C Storage temperature...................................... -20 to 70 ˚C Relative humidity ........................................... 5% to 90%, noncondensing
TTL Programmable (Rising or Falling) Selectable (TTL or RS-422) Programmable (Direct or Invert) Selectable (TTL or RS-422) Programmable (Rising or Falling) Selectable (TTL or RS-422) Programmable (Rising or Falling) Selectable (TTL or RS-422)CSYNCIN level Programmable (Rising or Falling)
Interface Chip Set Image acquisition boards, such as the IMAQ 1408, rely on the computer’s PCI interface chip set for the highest throughput to system memory. For the best results, your computer should have a Pentium or better processor and an Intel Triton I, Triton II, or compatible PCI interface chip set.
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