Gebruiksaanwijzing /service van het product PXD1000 van de fabrikant Roper
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1 Configuring the PXD1000 Digita l Frame Grabber with a Digital Camer a and Bu ilding a Compatib le Cable Rev 1.1 12/ 00 The PXD1000 digital frame grabber is compatible with nearl y all commercially available 40Mhz and below digital cameras.
2 PXD1000. The Technical Support section of the Imagenaiton Web site will contain the latest and most up-to-date information on supported digital c amera s. The following is a partial list of supported cameras (see Web for updated list www.imagenation.
3 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 signa ls needed to drive your camera .
4 CAMCLK(-) - pin 65 & CAMCLK(+) - pin 15 Name: Came ra Clock Signal provided by: Camera Purpose: indicates when Pixel is valid Signal: Rising sensitive LDV(-) - pin 64 & LDV(+) - pin 14 Name:.
5 Signal: Rising edge sensitive WEN(-) - pin 56 & WEN(+) - pin 6 Name: Write Enable Signal provided by: Camera Purpose: Defined b y camera FIELD(-) - pin 55 & FIELD(+) - pi n 5 Name: Field Sig.
6 Figure 1 Data conn ector (J2).
7 The I/O Connect or (Optional) All other sig nals (excep t for came ra data and timing ) are available a t the I/O connector. This includes the trigger, strob es and two general-purpose inputs and two outputs.
8 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, whi ch mates to the PXD1000.
9 Data6(+) 42 Tan/Y ellow 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 GROUN D 49 Tan/Orange 99 Orange/Tan +12V_FUSED GROUN D 50 Orange/Pink 100 Pink.
10 Data19(+) 29 Blue/Green 79 Green/Blue Data19(-) Data18(+) 30 Gr een/Purple 80 Purple/Green Data18(-) Data17(+) 31 Gray/Purple 81 Purple/Gray Data17(-) Data16(+) 32 Gray /Green 82 Green/Gray Data16(.
11 Regardless of if your cable ends up bein g longer or shorter than 3 meters, all cable wires must be of eq ual length due to the extreme ly sensitive timing cha racters of the Frame Grabber a nd Digital Camer a interfa ce.
12 d) Exposure and Strobe Timing Setting s (Exposure control Type set to strobe) i. Exposure t y pe a. Strobes set the fr ame grabber to gener ate signals at the strobe0 and strobe1 pins. These signals can b e used to program the e xposure or integration time of the camera .
13 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 HDr ive wire iv. Clocks from Data to Hsync: number of clocks from last pix el on the line to following horizontal sync.
14 Dim image : • With smooth gradat ions -Try Increase lightin g, check cam eras F- Stop, Exposure control settings. • With banding-Check cable wiring of the data bits. Remember th at Imagenation biases the Data connection to the uppe r bits of each channel.
15 Digital Frame Grabber Infor mation The WEN Signal This single is an input to the frame grabber from the camera and is typically tr eated as a F TV (Field Data Valid). This sig nal is availa ble on I/O line 1. The signal can be set to tri gger a grab using the SetTriggerSource function.
16 to debounce this signal. The debounce fl ag can be set using the SetTriggerSource function. If the debounce flag is set then two tri gger signals are required. One signal is set to TR I GGERP line 14 of the I/O connector. The other is sent to TR IGGERN line 15 of the I/O connector.
17 Pixel C lock Source Most digital cameras provide their own pix el clock to the frame grabber but in situations where a cust om frame and pixel rate are r equired, the fram e grabber must create the pi xel clock for th e camera. A pixel cl ock source provides more flexibility for the syste m integrator.
18 Pixel Swizz ling The second aspect of multi-channel c ameras that can cause p roblems for digital frame grabbers is the ordering of the received pixels. Figure 1 illustr ates how the Dalsa CA-D4 two-c hannel camera transmits pixels to the f rame grabbe r.
19 Image data as transferr ed directly to system memory from a Dalsa CA-D4 two- channel camera and 2b after h ardware reorderin g into scan line order b y a fram e grabber.
20 A modern digital frame grabb er should be able to convert data from camer as with each of these fo rmats into scan l ine ordered ima ges in system memor y. Resolution The ability of a camera to resolve details in a scene is de pendent on the type of lens employed and the relation of the camer a to the scene.
21 • Verify that proper li ghting exists and that the camera shutter is open and allowing sufficient lig ht into lens. • Verify that exposure time is not too shor t. • Verify camera is in free-runnin g default mode option mode. • Verify that all “enable” lines are conne cted for the cam era.
22 • Graduations have stripes Possible Cause/Solution: • If any of the symptoms described above ex ist, try reversing the Pixel Clock pins. The pins which should be swapped will depend on whether the pix el clock is being driven b y the camera (most common) or is driven b y the Frame Grabber.
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