PIXELVISION SPECTRAVIDEO User manual

PixelVision, Inc. PMD-004-00012-00
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 n/a T. Nebeker Updates/Edits

S
PECTRA
V
IDEO™
C
AMERA
USER’S MANUAL

Copyright © 1998 PixelVision of Oregon, Inc. All Rights Reserved PMD-004-00012-00 Rev. C
LIMITED WARRANTY
PixelVision of Oregon, Inc. warrants that The SpectraVideo™series of cameras
(the “camera”) will perform essentially in accordance with the accompanying
documentation for a period of one (1) year from date of receipt. If there are
physical defects in workmanship or materials in the camera or documentation that
are not associated with normal use and service, PixelVision, Inc. will replace or
repair camera or documentation free of charge within the period of one (1) year
from the date of receipt. The limited warranty is void if failure of the camera has
resulted from accident, abuse or misapplication on the part of the user.
If the camera must be returned 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 packing material.
Some states do not allow exclusions or limitations of implied warranties, so the
above limitations or exclusions may not apply to you. This warranty gives you
specific legal rights and you may also have other rights that vary from state to
state.
DAMAGE DISCLAIMER
At no time will PixelVision, Inc. be liable for direct, indirect, incidental or
consequential damage to hardware or software, loss of business profits, loss of
clients (potential and existing) or loss of information arising from the use or
inability to use the SpectraVideo™series cameras, PixelView™software program
or pertaining documentation. PixelVision, Inc. has no liability for any data stored
or processed with this software, including any costs for recovery of such data.

SpectraVideo Camera User’s Manual Table of Contents
Table of Contents
1. INTRODUCTION............................................................................................ 1
2. GENERAL DESCRIPTION OF CAMERA............................................................ 2
2.1. DIGITAL DATA ACQUISITION BOARD....................................................................3
2.2. PIXELVIEW SOFTWARE.......................................................................................3
2.3. SOFTWARE DEVELOPER’S KIT ............................................................................3
2.4. SYSTEM REQUIREMENTS ....................................................................................3
3. SPECTRAVIDEO CAMERA SETUP ................................................................. 5
3.1. PRECAUTIONS ...................................................................................................5
3.2. SETUP ..............................................................................................................5
3.3. SPECTRAVIDEO FAMILY GENERAL SPECIFICATIONS .............................................9
4. CAMERA EXPOSURE CONTROL.................................................................. 10
4.1. EXTERNAL EXPOSURE CONTROL ......................................................................10
4.2. SOFTWARE TRIGGERED EXPOSURE CONTROL ...................................................11
5. ANALOG SIGNAL PROCESSING BOARD ...................................................... 12
5.1. OVERVIEW.......................................................................................................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. DIGITAL CONTROL BOARD ........................................................................ 17
6.1. OVERVIEW.......................................................................................................17
6.2. TIMING SEQUENCE...........................................................................................17
6.2.1. FLUSH MODE ..............................................................................................................18
6.2.2. EXPOSURE MODE ........................................................................................................19
6.2.3. AFTER EXPOSURE MODE..............................................................................................19
6.2.4. READOUT MODE..........................................................................................................19
6.2.5. CLOCKING PARAMETERS..............................................................................................19
6.2.6. DIGITAL CONTROL BOARD CONNECTIONS......................................................................19
6.2.6.1. Scope Triggers...............................................................................................................................................19
6.2.6.2. Control Input/Output .....................................................................................................................................20
6.2.6.3. Analog to Digital Board Connections .........................................................................................................20
6.2.6.4. Socket Board Signals....................................................................................................................................21
7. SERIAL INTERFACE BOARD ....................................................................... 22
8. SHUTTER AND COOLING CONTROL BOARD................................................. 24
9. DATA ACQUISITION BOARDS ..................................................................... 25
9.1. LYNXPCI DATA ACQUISITION BOARD................................................................25

SpectraVideo Camera User’s Manual Table of Contents
9.1.1. FEATURES ..................................................................................................................25
9.1.2. GENERAL DESCRIPTION ...............................................................................................25
9.1.3. ARCHITECTURE ...........................................................................................................26
9.1.4. GENERAL SPECIFICATIONS ...........................................................................................27
10. BOARD TO BOARD ELECTRICAL CONNECTIONS ..................................... 28
11. SOFTWARE DEVELOPMENT................................................................... 29
11.1. SPECTRAVIDEO SERIAL PORT INTERFACE .........................................................29
11.1.1. REBOOT COMMANDS ...................................................................................................30
11.1.2. REGION OF INTEREST (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 TEXT FILE ......................................................................................................36
13. APPENDICES........................................................................................ 38
13.1. APPENDIX A....................................................................................................38
13.1.1. HEAD ASSEMBLY MECHANICAL DRAWING......................................................................38
13.2. APPENDIX B....................................................................................................39
13.2.1. CAMERA CONTROL BOX MECHANICAL DRAWING............................................................39
13.3. APPENDIX C....................................................................................................40
13.3.1. SPECTRAVIDEO 1CAMERA LOW LEVEL COMMAND SUMMARY .........................................40
13.3.2. DSP CONTROL OUTPUTS.............................................................................................43
GLOSSARY OF ACRONYMS AND TERMS........................................................... 44
INDEX OF CONTENTS...................................................................................... 46

SpectraVideo Camera User’s Manual Introduction
1
1. INTRODUCTION
The SpectraVideo™series of high performance, charge-coupled device (CCD)
cameras, manufactured by PixelVision, Inc., offer excellent sensitivity and low
noise throughout the visible and ultra-violet spectral regions. The affordable
SpectraVideo series cameras use Scientific Imaging Technologies, Inc. (SITe)-
designed CCDs. The camera’s back-illuminated CCD detector has as high as
ninety-nine percent quantum efficiency in the visible spectral region.
An optional ultra-violet, anti-reflective coating allows for excellent sensitivity
throughout the visible and ultra-violet spectral regions.
Thinned, back-illuminated CCDs overcome the performance limits of the
conventional front-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 unobstructed, allowing
for high quantum efficiency visible and ultra-violet light detection. Software gain
and shutter control allow variable exposure, binning, region of interest (ROI) and
timing.
The camera is delivered with a head assembly, camera control box, data
acquisition board and PixelView™(PixelVision, Inc.’s easy-to-use Microsoft
Windows®-based software package). The head assembly and camera control box
provide all of the necessary circuitry to operate the CCD array and provide low
noise signals to the computer interface. A LynxPCI™data acquisition board
acquires the images. The detector head is adaptable to most popular lens mounts,
with an ‘F’ mount standard. Exposure, temperature, gain and pixel binning are
controlled using PixelView.

SpectraVideo Camera User’s Manual General Description of Camera
2
2. GENERAL DESCRIPTION OF CAMERA
The SpectraVideo series camera is a two-piece camera design. A schematic
representation of the camera is shown in Figure 1 The CCD, thermoelectric
cooler, and pre-amplifier are all contained in the head assembly. The amplified
output of the CCD is transmitted over coaxial cable to the SpectraVideo camera
control box.
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User
supplied PC
Data
Acquisition
Board
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PixelView™
Software for
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3.1x, 95/98 or NT
Data Cable
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Head
Assembly
Serial Cable
CCD Analog
Signal Cable
Drive Cable
Camera
Control Box
Figure 1 Schematic Representation of the SpectraVideo camera electronics
The CCD clock and bias signals are provided to the head from the camera control
box through the drive cable. The pre-amplified CCD signal is returned through
the CCD analog signal cable. The camera control box houses: 1) the power
supplies necessary to operate the camera and thermoelectric cooler; 2) the digital
control board that generates the clocking to operate the CCD; 3) the analog signal
processing board; and 4) the shutter and cooler control board. On those cameras
using a PCI bus data acquisition card and fiber optic data link, a serial to parallel
converter board is also contained in the camera control box.
The digital control board contains the sequencer which generates the logic signals
for all time critical tasks associated with the CCD readout, the drivers which clock
the CCD gates, and the bias supplies for the driver rails. The sequencer is a
programmable digital signal processor (DSP) and many timing parameters are
controlled through its serial port. The analog signal processing board contains the
correlated double sampled (CDS) analog signal chain, the 16 bit, analog-to-digital
converter (ADC) and optical isolation from the PC to improve noise immunity.

SpectraVideo Camera User’s Manual General Description of Camera
3
2.1. DIGITAL DATAACQUISITION BOARD
SpectraVideo cameras are shipped with a 16 bit digital input interface to a
LynxPCI data acquisition board that acquires the images. The data acquisition
board receives digital signals from the SpectraVideo camera and the PixelView
software program captures the data that corresponds to the image’s pixel intensity
values and places the image into the PC memory, pixel-by-pixel. For more
detailed information on the data acquisition board, see Section 1.
2.2. PIXELVIEW SOFTWARE
PixelView software is provided with every SpectraVideo camera. PixelView is an
easy-to-use Windows-based image acquisition and analysis software package that
supports the features of the SpectraVideo camera. The software also includes
many intuitive image processing and analysis tools. Through the data acquisition
board, PixelView captures the 16 bit data that corresponds to the image’s pixel
intensity values and places the image into the PC memory, pixel-by-pixel.
PixelView has an intuitive structure 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 analysis and display tools are accessible from toolbox buttons.
The pull down menu system is user friendly and easy to learn.
For detailed information on the functions of the PixelView software program,
please refer to the PixelView Software User’s Manual.
2.3. SOFTWARE DEVELOPER’S KIT
PixelView uses device drivers that are loaded at system boot. These drivers can
also be accessed from the user’s software through provided DLLs.
2.4. SYSTEM REQUIREMENTS
The recommended hardware system to run your SpectraVideo camera is a 233
MHz Pentium processor with at least 64 MB of RAM and 5 MB of available disk
space.
PixelView is compatible with Windows 95/98/NT. It is not compatible with
earlier versions of Window. The program also requires a display adapter that
supports at least 256-color displays.
PixelView supports 1-, 2-, or 4-channel versions of the LynxPCI data acquisition
board with either a parallel or fiber optic interface. In addition, PixelView
supports controlling a single camera using two LynxPCI cards, but does not
support controlling multiple cameras with multiple boards.

SpectraVideo Camera User’s Manual General Description of Camera
4
The camera determines the data acquisition rate and you must ensure that your
computer has sufficient resources to keep up with the rate at which the camera
transmits data. Computers operating with 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 background tasks, a faster computer increases the reliability of acquiring
images.
PixelView does not interface directly with any other program; however, the
software reads and writes files that can be shared with other programs. PixelView
uses TIFF as its default file format.

SpectraVideo Camera User’s Manual SpectraVideo Camera Setup
5
3. SPECTRAVIDEO CAMERA SETUP
3.1. PRECAUTIONS
CAUTION! Charge-Coupled Devices (CCDs) are extremely sensitive to
electrostatic discharge (ESD) damage. The CCD may be damaged by
discharges of as low as 50 Volts. Do not unplug the head assembly unless at an
ESD safe workstation.
Your camera may have been shipped with the Head Assembly separate from the
camera control box. If so, the Head Assembly will have a shorting bar on its 37-
pin connector. Do not remove the shorting bar unless at an ESD safe workstation.
Connect the Head Cable to the camera control box. Remove the shorting bar and
replace it with the Head Cable. Be sure the Head Cable connectors are screwed in
at both ends.
The computer +5 Volt supply is available on pin 37 of the D37 connector of
parallel data acquisition board. It is highly recommended that the computer be
turned off when connecting the data cable on these cameras. The PCI data
acquisition board has a fuse 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, 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 packing material. If you need new
packing material, please contact PixelVision, Inc.
3.2. SETUP
Your SpectraVideo camera is shipped prepared for easy integration and operation.
Included in your shipment is a Packing List. Please verify that all parts have been
received. If any parts listed in the Packing List are not received with this package,
please contact PixelVision, Inc. Immediately.
Start by plugging the power cord into the power supply box then into a grounded
power source (a grounded wall socket is preferred). Leave the camera and
computer off until all the cabling is connected.
CAUTION! The camera is shipped with the drive cable from the camera control
box to the head assembly connected. DO NOT REMOVE THIS CABLE.
Removal will expose the static-sensitive CCD to possible electrostatic discharge
(ESD) damage.

SpectraVideo Camera User’s Manual SpectraVideo Camera Setup
6
For the camera control box to communicate with your PC, the data acquisition
board must be installed, if there is not one already installed. To install the board:
1. Make sure the computer is turned off.
2. Leave your computer plugged into a grounded power source, if it is
not already plugged in (a grounded wall socket is preferred).
3. Remove the computer’s chassis cover and locate a free PCI expansion
slot.
4. Remove the protective plate covering that corresponds to the chassis
slot, saving the machine screw.
5. Dissipate any static electricity by touching a bare-metal portion of the
PC chassis.
6. Remove the data acquisition card from the anti-static bag, holding the
board’s edge (do not touch the board’s back or the connectors
because these areas are more susceptible to retained static charge).
7. Insert data acquisition board into the free PCI expansion slot, making
sure that the board is fully seated.
8. Secure the board bracket using the machine screw from the chassis slot
plate.
9. Replace the chassis cover.
If you are not using a PCI bus data acquisition board with fiber optic links, you
must connect the 9-pin serial data cable 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
parallel cable from the port marked “Parallel Data” to the parallel port on the data
acquisition card. Figure 2 shows the camera setup with serial/parallel cabling. If
you are using a fiber optic link, install the fiber optic cables from the data
acquisition board to the camera control box.
CAUTION! When inserting or detaching the fiber optic cables, grasp the
metal nut at the end of the cable. Do not push or pull on the cable itself.
When removing the plastic cover at the tip of the cable, grasp the metal nut,
not the cable. DO NOT tie the fiber optic cable in a knot. Bending the cable
in a circle with a radius smaller than four inches can damage the cable.
To connect the fiber optic cables:
1. Remove the fiber optic port plugs by turning counter-clockwise ¼ turn and
then pulling out.
2. The first fiber optic cable goes from the port labeled “FO1” on the back of the
camera control box to the top fiber optic port on the data acquisition board.
The “top” port is the port farthest away from where the board is plugged into
the extension slot. Remember to loosen or tighten the cable using the metal
nut. Do not push or pull the cable itself. Rotate the metal nut clockwise until
the key slot drops into place.

SpectraVideo Camera User’s Manual SpectraVideo Camera Setup
7
3. The next cable goes from the port labeled “FO2” on the back of camera
control box to the next available port on the data acquisition board (again, in
order from top to bottom on the board).
NOTE: If the camera control box has more than two fiber optic ports, continue to
use the next available port on the data acquisition board for each cable coming
from the camera control box, in order from top to bottom on the board.
Once the cables are connected, restart your computer. If you are running
PixelView and a LynxPCI data acquisition board, when you restart your
computer, Windows 95 should inform you that it has detected new hardware, and
ask you for a driver disk for this hardware. Insert the disk label “PCI Driver Disk”
into your 3½" 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 Copy files from: box. If this occurs, type the correct path
to your floppy drive (i.e. ‘a:’) and press enter. You may have to direct the search
to your floppy drive more than once on some systems, especially if your system
has a CD-ROM drive.
For “internal exposure” use the short coaxial “exposure control loop back” cable
provided to connect the “Exposure Out” connector on the back of the camera
control box to the “Exposure In” connector (see Figure 2). For external exposure,
disconnect this cable and provide a TTL gate to the “Exposure In” connector (see
Section 4.1 for detailed information). In internal exposure, the camera controls the
exposure start and exposure duration; but, while in external exposure mode,
exposure is slaved to the gate pulse provided by the user.
☞

SpectraVideo Camera User’s Manual SpectraVideo Camera Setup
8
Figure 2 SpectraVideo Camera with Serial/Parallel Cable Interface
The camera head is provided with a Nikon lens mount standard. A C-mount or
Canon lens mount is optional. A ¼ inch – 20 tpi mounting hole is provided in the
camera head.
For specific information on the installation of the PixelView software program,
please refer to the PixelView Software User’s Manual.

SpectraVideo Camera User’s Manual SpectraVideo Camera Setup
9
3.3. SPECTRAVIDEO FAMILY GENERAL SPECIFICATIONS
Below are the general specifications for the SpectraVideo family.
Full Well Capacity 80,000 – 1,200,000 e–
Readout Amplifier Noise 4 - 9 e–/per readout @ -45°C., 50kpix/sec
A/D Conversion 16 bit
Readout Rate 50 - 450 kpix/sec (1 Mpix/sec optional)
Shutter DC to 50 milliseconds, software or external sync control
Row Shift Period 24 – 60 µsec
Gain Settings Software select, High (app. 4.5 e–/ADU) 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 Dewar -70°C from ambient
Electrical Input 100 VAC - 240 VAC 50 - 60Hz
Computer Interface Serial port and PCI bus (fiber optic cabling available with PCI
bus)
Camera Head Dimensions 4.0"(w) x 4.0"(h)
Operating Mode Software selectable via serial port or fiber optic link
Recommended Computer System
Requirements 233MHz Pentium processor with at least 64 MB of RAM and
5MB of available disk space
Software PixelView is provided with each camera
Table 1 SpectraVideo Family General Specifications

SpectraVideo Camera User’s Manual Camera Exposure Control
10
4. CAMERA EXPOSURE CONTROL
4.1. EXTERNAL EXPOSURE CONTROL
Exposure may be controlled externally by supplying a TTL level to the “Exposure
In” connector on the back of the camera control box, with “Exposure Out”
disconnected. The TTL level is normally high; exposure will occur while the level
is pulled low. With a brief delay (typically 15 µs), as soon as the level goes low,
the camera will go into exposure mode and communication with the camera will
be suspended until exposure is discontinued and a frame readout is complete.
If you are running PixelView, exposure must be set to Externally Gated in the
Exposure Tab within the “Camera Setup” dialog box under the Control menu.
A new frame 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, selecting the Continuous
(Ctrl-C) item from the Acquire menu makes continuous acquisitions.
The entrance into exposure mode may be delayed for as long as it takes the
parallel gate drivers to fall, typically 15 µs. Consequently, the exposure gate
should precede the external event by at least 15 µs.
After the exposure gate rises, the CCD will continue to expose to allow time for a
shutter to close, phosphor to decay, etc. The length of time is determined by the
value entered in the “After Exposure” box within the Rate Tab of the “Camera
Setup” dialog box under the Control menu. After exposure wait can also be
accessed by the user’s software. Figure 3 below shows the relationships between
the various waveforms.
Figure 3 Exposure Timing Relationships

SpectraVideo Camera User’s Manual Camera Exposure Control
11
When using an external exposure gate, the beginning of exposure will not be
synchronized with the end of a CCD line and there will be a slight difference in
dark current between two frames with the same exposure. This results from the
dark current accumulated during the uncertainty in one line. This effect should be
small for cooled CCDs running at high speeds.
When externally gated exposure mode is selected, the Digital Signal Processor
(DSP) stops the parallel gates for the duration of the low level on the exposure
gate (± ½ row readout + one parallel shift).
NOTE: When using a PCI data acquisition board, the 100 µs signal is the signal
that is generated by the PCI board. The signal goes to the DSP that controls CCD
shifting. This DSP acts on the falling edge.
4.2. SOFTWARE 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 coaxial cable is provided with each camera for this use. If
PixelView used, exposure must be set to Software Trigger in the Exposure Tab
within the “Camera Setup” dialog box under the Control menu.
Internal exposure timing is handled by the DSP and when a new frame is
requested, the camera will complete clearing the serial register before beginning
the exposure. A TTL level that is low while the camera is exposing is available at
the Sync connector on the front panel of the camera control box.
Internal exposure duration may be set from 25 µs to over 100 hours with a
granularity of 100 ns or 62.5 ns, depending on the frequency of the system clock.
When externally triggered exposure mode is selected, the DSP stops the CCD
parallel gates for the programmed exposure time, starting on the falling edge of
the Exposure In signal.
☞

SpectraVideo Camera User’s Manual Analog Signal Processing Board
12
5. ANALOG SIGNAL PROCESSING BOARD
5.1. OVERVIEW
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. ANALOG SIGNAL PROCESSING BOARD CONNECTIONS
5.2.1. GAIN SELECTION
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

SpectraVideo Camera User’s Manual Analog Signal Processing Board
13
upper end of the dynamic range is set to the full well potential of the CCD’s
parallel pixel charge sites and so that 2 bits are used to sample the noise floor of
the camera. The LOW gain setting is used to match the upper end of the ADC’s
dynamic range to the full well potential of the CCD’s serial pixels. Under typical
operating conditions, gain setting is performed 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
Buffered analog output (0 to -10V range) taken just prior to input to the analog to
digital converter is available on J7 outer most pin. DC offset may be adjusted on
R11 of the clamp sample piggyback board.
J7 pin 2 J7 pin 2
Analog output GND
Table 2 Analog Output on the PMB-003
J5 pin Function J5 pin Function
1 -15V 2 Last Gate
3 GND 4 Vrd
5 GND 6 Vdd
7 +15V 8 GND
9 GND 10 Analog Signal
Table 3 Low Noise Cable Connection to Socket Board
☞

SpectraVideo Camera User’s Manual Analog Signal Processing Board
14
5.2.3. BOARD TO BOARD SIGNAL CONNECTIONS
Control signals from the DSP digital board control. Analog 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
11 GND 12 Gain
13 GND 14 Serdatain
15 GND 16 Serdataout
17 GND 18 Frame blank
19 serclk 20 Line blank
Table 4 Analog Board to Digital Board Control Cable Connections

SpectraVideo Camera User’s Manual Analog Signal Processing Board
15
5.2.4. DIGITAL INPUT/OUTPUT
J3 pin Function J3 pin Function (with Serial I/O)
1 Data 0 (LSB) 2 n/c
3 Data 1 4 n/c
5 Data 2 6 PC GND
7 Data 3 8 Line Blanking pulse
9 GND 10 Frame Blanking pulse
11 Data 4 12 ~ Output enable 0
13 Data 5 14 PC GND
15 Data 6 16 ~ Output enable 1
17 Data 7 18 n/c
19 GND 20 Data Valid strobe
21 Data 8 22 ~ Output enable 2
23 Data 9 24 PC GND
25 Data 10 26 ~ Output enable 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
RS232 control of DSP parameters is accessible through the RS232 connector.
This connector can be connected straight across to a DB9 connector. These
RS232 connections also appear in the data I/O connector (J3) for convenience.
Parallel SpectraVideo cameras use an RS232 port. CommTest is a program used
to exercise the serial port of the Imaging Module in order to determine the health
of the link. For more information on the CommTest program see Section 12.1.