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SpectraVideo Camera User’s Manual 

 

Analog Signal Processing Board 

12 

5.  A

NALOG 

S

IGNAL 

P

ROCESSING 

B

OARD

 

5.1.  O

VERVIEW

 

The analog signal processing board is used to amplify the output signal from the 
CCD  and  digitize  it.  The  analog  processing  board  contains  the  clamp/sample 
correlated  double  sample  circuit,  the  analog  signal  chain,  the  analog-to-digital 
converter,  and  the  optical  isolation  circuitry  that  provides  noise  immunity  from 
the PC. 

 

Figure 4  SpectraVideo Analog Processing Board Layout 

 

One of two gain settings can be selected on the analog signal processing board. A 
buffered analog output is also available for troubleshooting and for external signal 
processing. 

5.2.  A

NALOG 

S

IGNAL 

P

ROCESSING 

B

OARD 

C

ONNECTIONS

 

5.2.1. 

G

AIN 

S

ELECTION

 

Two analog gain settings, HIGH and LOW, are used to set the gain of the analog 
channel on the analog signal processing board.  

Unless  otherwise  specified  by  the  customer,  the  HIGH  gain  setting  is  used  to 
adjust  the  dynamic  range  of  the  analog-to-digital  converter  (ADC)  so  that  the 

Summary of Contents for SPECTRAVIDEO

Page 1: ...2 00 Rev C SPECTRAVIDEO CAMERA USER S MANUAL DOCUMENT CHANGE NOTICE REV DATE DCN ORIGINATOR SUMMARY OF CHANGES A 2 8 98 n a T Nebeker Original Document B 4 15 99 n a T Nebeker Updates Edits C 2 15 00...

Page 2: ...SPECTRAVIDEO CAMERA USER S MANUAL...

Page 3: ...ed to PixelVision Inc for replacement or repair it must be packed in its original material as it was shipped to you The limited warranty may be voided if the camera is not returned in its original pac...

Page 4: ...EW 12 5 2 ANALOG SIGNAL PROCESSING BOARD CONNECTIONS 12 5 2 1 GAIN SELECTION 12 5 2 2 ANALOG OUTPUT 13 5 2 3 BOARD TO BOARD SIGNAL CONNECTIONS 14 5 2 4 DIGITAL INPUT OUTPUT 15 5 2 5 RS232 INPUT 15 6 D...

Page 5: ...ROI IMPLEMENTATION 30 11 1 3 COMMAND SUMMARY 31 12 SUPPORTING SOFTWARE 34 12 1 COMMTEST SOFTWARE USER S GUIDE 34 12 2 PIXLOAD SERIAL PORT CONTROL SOFTWARE 35 12 2 1 TEXT FILE FORMAT 35 12 2 2 SAMPLE T...

Page 6: ...nt illuminated CCDs by illuminating and collecting charge through the back surface away from the polysilicon gate electrodes on the front surface The image photons enter the CCD back surface unobstruc...

Page 7: ...0000000000000000000000000000 0000000000000000000000000000000000000000000000 PixelView Software for Windows 3 1x 95 98 or NT Data Cable 00000000000000000000000000000000000 00000000000000000000000000000...

Page 8: ...where images and graphics are associated with windows The Shortcut Key feature a combination of mouse drags and key pushes makes graphics and analysis just a touch away Some of the most commonly used...

Page 9: ...higher clock speeds will not acquire images faster than the rate determined by the camera however as bus and microprocessor clock speeds improve the efficiency in which the computer handles backgroun...

Page 10: ...on this supply voltage pin A damaged fuse on a PCI board can cause a serial port command upload failure error message Please save all packing material If the camera must be returned to PixelVision In...

Page 11: ...from the port on the back of the camera control box marked serial control to a free serial COM port on your PC Note which serial COM port you are using for setup of PixelView Then connect the paralle...

Page 12: ...he disk label PCI Driver Disk into your 3 floppy drive select that drive and click OK Follow any instructions Windows 95 presents Some PC systems may prompt you for a file name or directory in the Cop...

Page 13: ...Cable Interface The camera head is provided with a Nikon lens mount standard A C mount or Canon lens mount is optional A inch 20 tpi mounting hole is provided in the camera head For specific informat...

Page 14: ...or Low app 9 e ADU Binning and Region of Interest ROI Binning and ROI is software selectable in X and Y coordinates Cooling Capacity 2 stage TE Vacuum Module 45 60 C from ambient 3 stage TE O ring De...

Page 15: ...me must then be acquired The software will wait until an exposure has occurred and will capture the frame Pressing the Escape key will cancel the acquisition Once a single frame has been acquired sele...

Page 16: ...ARE TRIGGERED EXPOSURE CONTROL To use software triggered exposure control the connector on the camera control box labeled Exposure Out must be looped back to the connector labeled Exposure In A short...

Page 17: ...des noise immunity from the PC Figure 4 SpectraVideo Analog Processing Board Layout One of two gain settings can be selected on the analog signal processing board A buffered analog output is also avai...

Page 18: ...by the PixelView software package NOTE If you are running a two speed camera the HIGH gain setting is used for high speed operation and the LOW gain is used for low speed operation 5 2 2 ANALOG OUTPUT...

Page 19: ...signal processing for noise reduction and data conversion J1 pin Function J1 pin Function 1 15Vdc 2 Sample Hold 1 3 GND 4 Start Convert 5 5Vdc 6 Output Enable 7 15Vdc 8 Sample Hold2 9 GND 10 Expo_Gate...

Page 20: ...3 27 Data 11 28 n c 29 GND 30 n c 31 Data 12 32 n c 33 Data 13 34 n c 35 Data 14 36 5V from PC 37 Data 15 MSB 38 TTL in 39 Serial clock 40 TTL out Table 5 PMB 003 Data I O Connector 5 2 5 RS232 INPUT...

Page 21: ...pectraVideo Camera User s Manual Analog Signal Processing Board 16 J4 pin Function J4 pin Function 1 NC 2 nc 3 RS232 input 4 nc 5 RS232 output 6 nc 7 NC 8 nc 9 GND 10 nc Table 6 PMB 003 RS232 Connecto...

Page 22: ...basic modes flush exposure after exposure and readout During the flush mode the CCD is cleared as quickly as possible and the data is not transferred to the PC Exposure mode is entered from the flush...

Page 23: ...re delay and then low during the readout In this way the I O channel to the PC can sense the internal exposure gate timing EG Exposure Gate DV Data Valid LB Line Blanking FB Frame Blanking Figure 6 Ca...

Page 24: ...readout occurs with the data valid strobe active The readout may not be interrupted except by DSP reset The rising edge of the data valid strobe occurs after valid data appears on the data bus There i...

Page 25: ...Function J2 Pin Function 1 15V 2 DSP reset 3 GND 4 Shutter 5 5V 6 Aux dat 1 7 15V 8 Aux dat 2 9 GND 10 Aux dat 3 11 GND 12 Aux dat 4 13 GND 14 Aux dat 5 15 GND 16 Aux dat 6 17 Clockout 18 Aux dat 7 19...

Page 26: ...J6 Pin Function J6 Pin Function 1 GND 2 SWout 3 GND 4 S1out 5 GND 6 S2out 7 GND 8 S3out 9 GND 10 Reset Logic 11 GND 12 P1out 13 GND 14 P2out 15 GND 16 P3out 17 GND 18 Tgout 19 Reset gate High rail vo...

Page 27: ...mploys a Lattice ispLSI 2032 In System programmable PLD as a service controller It provides 4 channel serial transmitter control clock divider violation control A transparent AMD TAXI transmitter Am79...

Page 28: ...s can be used to provide an input signal to the board They all share the same 16 bit bus Additional write enable signals are provided by the Digital Control Board to latch every channel in its own lat...

Page 29: ...s open and 5V otherwise PixelView uses two constants called TempGain and TempOffset These values are used to convert a temperature to a binary value to send after the x command TempOffset Kelvin _ in...

Page 30: ...to two kilometers away 9 1 2 GENERAL DESCRIPTION Specifically designed for use with digital camera systems the LynxPCI data acquisition board captures and stores the parallel or serial data from digit...

Page 31: ...LynxPCI uses doubled FIFO or dual port memory buffers LynxPCI writes incoming data into one memory buffer while another is read by the PCI controller guaranteeing uninterrupted data acquisition The L...

Page 32: ...mory Map POWER 5VDC 3A max MTBF 30 000 hrs OPERATING TEMPERATURE 0 70 Degrees Celsius non condensing STORAGE TEMPERATURE 20 to 85 Degrees Celsius FO Tx Tx FO Rx Rx LSB Rx MSB Switch FIFO 4Kx16 FIFO 4K...

Page 33: ...board and the CCD socket boards are connected as shown in Table 12 Digital Control Board to Analog Signal Processing Board J3 J1 pin 1 to pin 1 Digital Control Board to Socket Board J6 J1 J2 J6 pin 1...

Page 34: ...control character to tell the DSP which function is being accessed and the second two are combined to form an integer The port can be tested by sending single characters using a simple terminal emulat...

Page 35: ...ual clock period of a particular camera may be found on the data sheet and in the registry or pixview ini shipped with the camera 11 1 1 REBOOT COMMANDS Control Character ASCII Function Discussion 0 t...

Page 36: ...e lead in pixels in the imager as well as the active pixels If serial binning is used this number may be divided by the number of serial pixels binned but the extra 4 pixels for pipeline delay must st...

Page 37: ...close or phosphor to decay etc The serial register of the CCD is kept flushed during this period The wait time is set to AfterExposureWait squared times the unbinned serial pixel period Min 1 i ROI en...

Page 38: ...above Minimum MiddleLoopCounter 1 w Internal timer outer loop counter See discussion for t above Minimum OuterLoopCounter 1 x CCD Temperature See discussion in the Shutter and Cooler control board se...

Page 39: ...r button clears the response space in the window The Send button works the same as a carriage return if the Send button is highlighted The RS232 lines are optically isolated on the analog board before...

Page 40: ...must conform to the DOS filename format The text file format must conform to the rules described in this section for the DSP commands to be sent appropriately PixLoad depends on the text file to be le...

Page 41: ...e to a hexadecimal format used by the DSP See Section 11 1 on the SpectraVideo serial port interface for details on the serial port command syntax 12 2 2 SAMPLE TEXT FILE The following is a sample lis...

Page 42: ...1024 unblanked lines in region of interest r 0 lines skipped after region of interest s 0 1 internal 0 external exposure control t 1000 internal exposure counter inner loop v 1 internal exposure count...

Page 43: ...SpectraVideo Camera User s Manual Appendices 38 13 APPENDICES 13 1 APPENDIX A 13 1 1 HEAD ASSEMBLY MECHANICAL DRAWING Head Assembly Mechanical Specifications Weight 2 5 lbs...

Page 44: ...SpectraVideo Camera User s Manual Appendices 39 13 2 APPENDIX B 13 2 1 CAMERA CONTROL BOX MECHANICAL DRAWING Camera Control Box Mechanical Specifications Weight 7 0 lbs...

Page 45: ...ile requires the user host to do some calculations based on constants associated with the camera These constants are in pixview ini or are listed on a separate data sheet sent with the camera prom pag...

Page 46: ...Interest mode switch 0 no region of interest roi 1 1 roi n n ROIs with n rods see discussion at B a number pixels per row line lead in pixels central array pixels 2 This is the number of pixels per ro...

Page 47: ...minus 1 pixels group size c 1 e 20 serial wait count pixel period baseNumSerialStates e 3 masterClock Some proms have fixed serial timing f 60 parallel wait count parallel shift state period f 4 mast...

Page 48: ...period of each line The PCI I O board blanks the first LB pulse since data is not meaningful until after the first line is written to line buffer An additional line must be read from CCD so that that...

Page 49: ...al Signal Processor The integrated circuit used to generate the logic for the CCD clocking sequence Lead in pixels Lead in pixels are extra pixels in the serial register between the imaging array and...

Page 50: ...em reboot Quantum efficiency Photon to electron conversion efficiency in the CCD ROA Region Of Analysis ROI Region Of Interest Only those pixels in the ROI are digitized during CCD readout when ROI is...

Page 51: ...External Exposure Control 10 F Flush Mode 18 Frame Blank Pulse 18 G Gain Selection 12 Gain Signal Chain 12 General Specifications 9 I Installing Data Acquisition Board 6 Internal Exposure Control 11...

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