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Configuring the PXD1000 Digital Frame Grabber with a
Digital Camera and Building a Compatible Cable
Rev 1.1 12/00
The PXD1000 digital frame grabber is compatible with nearly all commercially available
40Mhz and below digital cameras. In order to use a digital camera with your PXD1000
digital frame grabber, a compatible cable and configuration file will be required.
Imagenation provides direct support with compatible cables and configuration files for a
number of the more popular digital cameras
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PXD1000. The Technical Support section of the Imagenaiton Web site will contain the latest and most up-to-date information on supported digital cameras. The following is a partial list of supported cameras (see Web for updated list www.imagenation.com as this list is constantly expanding). Camera Configuration Files & Guides BASLER BA101 Basler Area Scan A101 (Previously A113) BL102 Basler Line Scan L102 (Previously L130) BL203 Basler Line Scan L203 (Previously L240) DALSA DALSA Dalsa CA-D4/D
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There is no standard for wiring any particular camera. Imagenation provides information to help get you started on page 51 to page 53 in the users guide. Start by making a map of the connections as shown on page 53. You will need to list all the required signals needed to drive your camera. In addition to the data lines, most digital cameras require at least a Line- Data-Valid (LDV), Frame-Data-Valid (FDV) and Pixel clock (CAMCLK). Addition signals may be needed depending on the camera used. The
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CAMCLK(-) - pin 65 & CAMCLK(+) - pin 15 Name: Camera Clock Signal provided by: Camera Purpose: indicates when Pixel is valid Signal: Rising sensitive LDV(-) - pin 64 & LDV(+) - pin 14 Name: Line Data Valid Signal provided by: Camera Purpose: tells which pixel is valid for a line Signal: High or Low depending on camera FDV(-) - pin 63 & FDV(+) - pin 13 Name: Frame Data Valid Signal provided by: Camera Purpose: Tells which lines are valid for frame Signal: High or Low depending on camera HD(-) -
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Signal: Rising edge sensitive WEN(-) - pin 56 & WEN(+) - pin 6 Name: Write Enable Signal provided by: Camera Purpose: Defined by camera FIELD(-) - pin 55 & FIELD(+) - pin 5 Name: Field Signal provided by: Camera Purpose: signal for even or odd field for interlaced output CTRL#0(-) - pin 54 & CTRL#0(+) - pin 4 Name: Control 0 Signal provided by: Frame Grabber Purpose: Provides TTL output for use by application CTRL#1(-) - pin 53 & CTRL#1(+) - pin 3 Name: Control 1 Signal provided by: Fram
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Figure 1 Data connector (J2) 6
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The I/O Connector (Optional) All other signals (except for camera data and timing) are available at the I/O connector. This includes the trigger, strobes and two general-purpose inputs and two outputs. Figure 4.2 shows the signals on the I/O connector 3) Build from cable with compatible FG connector For cameras where standard cables are not available, you can purchase an Imagenation cable-kit and build one or make your own from scratch. In addition you will need to consult your camera manual fo
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states that the CB-012-00 kit was appropriate for single channel digital cameras of up to 20-bits) The kit contains a cable with 37 twisted pairs of wires terminated on one end by a 100-pin connector, which mates to the PXD1000. On the other end the wires have been prepared for attaching to a connector (which you must supply) that mates to your camera. Cable kit CB-012-00 Signal Pin Wire Color Pin Signal (Wire/Stripe) GROUND 1 Purple/Orange 51 Orange/Purple GROUND 2NC 52 NC CRTL1(+) 3 Blue
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Data6(+) 42 Tan/Yellow 92 Yellow/Tan Data6(-) 43 NC 93 NC 44 NC 94 NC 45 NC 95 NC 46 NC 96 NC 47 NC 97 NC 48 NC 98 NC GROUND 49 Tan/Orange 99 Orange/Tan +12V_FUSED GROUND 50 Orange/Pink 100 Pink/Orange +12V_FUSED Making a data cable for 11-bit to 32-bit Cameras Cable kit CB-011-00 is appropriate for cameras from 11 data bits to 32 data bits. The kit contains a cable with 50 twisted pairs of wires terminated on one end by a 100-pin connector, which mates to the PXD1000. On the other en
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Data19(+) 29 Blue/Green 79 Green/Blue Data19(-) Data18(+) 30 Green/Purple 80 Purple/Green Data18(-) Data17(+) 31 Gray/Purple 81 Purple/Gray Data17(-) Data16(+) 32 Gray/Green 82 Green/Gray Data16(-) Data15(+) 33 Blue/White 83 White/Blue Data15(-) Data14(+) 34 Brown/Tan 84 Tan/Brown Data14(-) Data12(+) 35 Tan/Pink 85 Pink/Tan Data13(-) Data13(+) 36 Gray/Yellow 86 Yellow/Gray Data12(-) Data11(+) 37 Brown/Purple 87 Purple/Brown Data11(-) Data10(+) 38 Brown/Gray 88 Gray/Brown Data10(-) Data9(+) 39 Ta
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Regardless of if your cable ends up being longer or shorter than 3 meters, all cable wires must be of equal length due to the extremely sensitive timing characters of the Frame Grabber and Digital Camera interface. The PXD Configuration Application Imagenation provides a program called PXD Configuration Application which is used to create a configuration file for your digital camera. The following described each box in configuration application Setting the camera Information (Select Camera Infor
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d) Exposure and Strobe Timing Settings (Exposure control Type set to strobe) i. Exposure type a. Strobes set the frame grabber to generate signals at the strobe0 and strobe1 pins. These signals can be used to program the exposure or integration time of the camera. b. Fixed Exposure means that the camera’s exposure is not adjustable. You can still program the strobes, but the exposure time features are not available. c. Unknown Exposure is used if the exposure is unknown or not programmable. In
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i. Pulse Width: in number of clocks ii. Output polarity: Low or High true iii. Strobe#l wire: Output the HDrive signal to strobe1 and strobe1 ++1 wires in addition to the HDrive wire iv. Clocks from Data to Hsync: number of clocks from last pixel on the line to following horizontal sync. v. For cameras that use Vertical Drive, the frame grabber generates a V drive pulse and the camera synchronizes to it. The camera then generates an FDV (Frame Data Valid) signal and sends it back to the fra
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Dim image: • With smooth gradations -Try Increase lighting, check cameras F- Stop, Exposure control settings. • With banding-Check cable wiring of the data bits. Remember that Imagenation biases the Data connection to the upper bits of each channel. If this is wrong you may not be seeing all the bits. All Black image: Check cable wiring. FDV, LDV, Pixel Clock hook up. Check Power connector to camera. (if power from FG check to see if power connector is hooked up to PXD1000. Is the camera s
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Digital Frame Grabber Information The WEN Signal This single is an input to the frame grabber from the camera and is typically treated as a FTV (Field Data Valid). This signal is available on I/O line 1. The signal can be set to trigger a grab using the SetTriggerSource function. Data line Options 8 bit, 10 bit, 12 bit, 14 bit, 16 bit , 32 bit – Bits/Pixel For a monochrome camera this describes the maximum number of resolvable gray levels that the camera can provide. Eight bits per pixel (256 gr
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to debounce this signal. The debounce flag can be set using the SetTriggerSource function. If the debounce flag is set then two trigger signals are required. One signal is set to TRIGGERP line 14 of the I/O connector. The other is sent to TRIGGERN line 15 of the I/O connector. By sending the signal to TRIGGERP the internal state will be set to one state. By sending the signal to TRIGGERN the internal state will be set to the reversed state. This can be accomplished using a SPDT type switch. Burs
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Pixel Clock Source Most digital cameras provide their own pixel clock to the frame grabber but in situations where a custom frame and pixel rate are required, the frame grabber must create the pixel clock for the camera. A pixel clock source provides more flexibility for the system integrator. 17
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Pixel Swizzling The second aspect of multi-channel cameras that can cause problems for digital frame grabbers is the ordering of the received pixels. Figure 1 illustrates how the Dalsa CA-D4 two-channel camera transmits pixels to the frame grabber. Two pixels are received on the first pixel clock; pixel 0 from the top left edge of the image and pixe1 1023 (remember there are 1024 pixels/line in the) from the top right. On each successive clock the next pixel received from each channel is from on
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Image data as transferred directly to system memory from a Dalsa CA-D4 two- channel camera and 2b after hardware reordering into scan line order by a frame grabber. To alleviate this problem, many digital frame grabbers incorporate pixel swizzling circuitry to dynamically rearrange the pixels into scan line order so that the application can immediately begin the image-processing task. Differeent cameras employ a number of different image-formatting schemes. The most common are shown in Figure 4.
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A modern digital frame grabber should be able to convert data from cameras with each of these formats into scan line ordered images in system memory. Resolution The ability of a camera to resolve details in a scene is dependent on the type of lens employed and the relation of the camera to the scene. Therefore manufacturers often describe the resolution of a camera by the stating number of horizontal and vertical picture elements contained in the image sensor. For example, the Pulnix TM1300 area
