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LD3522PGK-011 Fiches technique(PDF) 2 Page - PerkinElmer Optoelectronics |
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LD3522PGK-011 Fiches technique(HTML) 2 Page - PerkinElmer Optoelectronics |
2 / 8 page www.perkinelmer.com/opto Figure1a: Spectral Sensitivity Curve (1X Gain) 100 90 80 70 60 50 40 30 20 10 0 250 350 450 550 650 750 850 950 1050 100 90 80 70 60 50 40 30 20 10 0 Wavelength (nm) Right Scale Left Scale Figure 1b: Window Transmission Curve Wavelength (nm) 100 90 80 70 60 50 40 30 20 10 0 150 450 350 250 550 950 850 750 650 1050 Digital Linescan Camera Sensor Description The LD3500-series cameras contain a single output, high-performance, high- resolution line scan image sensor (PerkinElmer Optoelectronics Reticon ® parts RL0512PAG, RL1024PAG, or RL2048PAG) featuring a pinned photodiode pixel. The spectral response of the sensor is shown in Figure 1a, with the sensor window transmission curve shown in Figure 1b. Functional Description The video signal from the sensor is processed through a single channel of sampled-and-held, raster order, digital video data. The video channel signal processing circuitry offers adjustable gain levels that allow users to customize of the camera to unique lighting applications Operating Modes The LD3500 series cameras can operate in Master or Slave Mode. When the camera is set to Master Mode, the camera operates at its maximum line scan and data rate. When the camera is set to Slave Mode, the cameras scan and data rates are determined by the users input signals to the camera. The opertaing mode is set via the serial connection on the CameraLink models, and is auto- detected on the LVDS models. Auto- detection is accomplished by looking for either a Line Transfer (LT) and/or External Clock signal. If the camera receives a LT signal, but no external clock, it will continue to run a the maximum data rate, but will only intiate a LT upon signal. If the camera recieves an external clock signal, it will run at that clock signal with either an internal or external LT signal. Input/Output Signal Specifications The LD3500 camera requires a single DC supply (+12 to 24V) for operation. An internal oscillator sets the default data output rate to default model rate (20 or 40 MHz). CameraLink Models: CameraLink allows for 4 manufacturer-defined camera control signals (CC1-CC4). CC1 is a Line Transfer (LT) signal. CC2 is a Line Reset (LR) signal. CC3 and CC4 are reserved for future assignment. The rising edge of the LT signal transfers the charge from each photosite to the readout registers. The readout registers, in turn, transport the charge from each photosite in succession to the video outputs. The exposure time of the camera can be externally controlled using the LR input. The LR input is active low (ON) in polarity and therefore, when not in use, must be held high or left unattended (OFF). In this condition, the exposure time is defined by the period of the LT signal. Output signals are compliant with CameraLink specifications. Parallel LVDS (RS-644) Models: Parallel LVDS models of the LD3500 provide Master Clock (MCLK), Line Transfer (LT) and Line Reset (LR) input signals. The MCLK input determines the data rate frequency for values up to maximum clock of the camera. The MCLK input is optional, as the camera is preset to run off of the internal oscillator at the default maximum data rate. Should a data rate slower than that default rate be necessary, an externally supplied master clock can be used. The data rate may be run from 2 MHz to cameras maximum clock rate. The Line Transfer input signal transfers the charge from each photosite to the readout registers. The readout registers, in turn, transport the charge from each photosite in succession to the video outputs. The exposure time of a LD3500-series camera can be controlled by using the external LR input. The LR input is active low (ON) in polarity and therefore, when not in use, must be held high or left unattended (OFF). In this condition, the exposure time is defined by the period of the LT signal. When using the LR input signal, the exposure period is defined to be the time between the rising edge of LT to the rising edge of LR. The LD3500-series camera provides two output synchronization signals: Camera Clock (CCLK) and Line PDP-206.01B - 7/2002W Page 2 |
Numéro de pièce similaire - LD3522PGK-011 |
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Description similaire - LD3522PGK-011 |
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