Spiricon Inc. reserves the right to make improvements and changes to the product described in this
manual at any time and without notice. While Spiricon Inc. has taken every precaution in the
preparation of this product Spiricon Inc. assumes no responsibility for errors or omissions that might
cause or contribute to a loss of data.
Spiricon Inc. makes no guarantee that any one brand or model of Personal Computer will be compatible
with any or all of the capabilities in the LBA-PC application software or hardware, either now or in the
future.
Operator’s Manual LBA-PC
2
Table of Contents
OPERATOR’S MANUAL __________________ 1
Version 4.xx ____________________________________________ 1
Laser Beam Analyzer __________________________________ 1
10.9 SERVICE REQUEST ____________________________________________ 209
10.9.1 Service Request Response_________________________________________ 209
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Chapter 1 INTRODUCTION
1.1 General Information
The Spiricon, Laser Beam Analyzer, Models LBA-300/400/500/700/708/710/712/714PC, is a low cost, PC
based product for use in modern Pentium generation personal computers with high performance PCI
bus architecture. It provides all the essential features needed for laser beam analysis. Some of these
features are:
• High-speed high-resolution false color beam intensity profile displays in both 2D and 3D.
• Operates in Windows 2000, XP Professional, or higher operating systems.
2000 or Windows® XP Professional operating system with at least 64MB of main
memory.
h) A CD-ROM Drive.
i) A PC compatible mouse & keyboard.
Pentium and Pentium Pro are registered trademarks of Intel Corporation.
Windows 2000 and Windows XP Pro are registered trademarks of Microsoft Corporation.
Notice: PC operating system, component and hardware manufactures are constantly revising their products.
Therefore Spiricon, Inc. makes no guarantee that any one brand or model of Personal Computer will be compatible
with any or all of the features contained in the LBA-PC application, either now or in the future.
1.3 Optional Equipment
1. Four-camera adapter, allows you to choose between 1 of 4 connected analog cameras or
automatically cycle between them.
2. Digital Camera adapter, allows you to interface the output from an RS-422 or LVDS digital camera.
3. A printer with appropriate Windows compatible drivers.
4. LBS-100, BA-VIS, -NIR, or -BB Laser Beam Attenuator.
Most laser beam energy will need to be attenuated before applying it to the camera sensor.
Attenuation requirements vary greatly depending upon application. Spiricon offers optional equipment
for beam attenuation. Consult your Spiricon Representative or call Spiricon's Sales Department for
further information.
While the LBA-PC does not present the operator with any safety hazards, this instrument however is
intended for use with laser systems. Therefore, the operator should be protected from any hazards
that the laser system may present. The greatest hazards associated with laser systems are damage to
the eyes and skin due to laser radiation.
1.5.1 Optical Radiation Hazards
With almost any camera used with the LBA-PC, the optical radiation at the camera sensor is low
enough to be considered relatively harmless. However, usage of this instrument may require the
operator to work in the optical path itself where exposure to hazards may be sufficient to warrant the
use of protective equipment.
Unless the laser’s optical path is enclosed, at least to the point where the beam is attenuated for use
with the camera system, the operator should be protected against accidental exposure. Exposure to
personnel other than the operator must also be considered. Exposure hazards include reflected
radiation as well as the direct beam. When working with an unenclosed beam path, it is advisable to
do so with the laser not operating, or operating at reduced power levels. Whenever there is risk of
dangerous exposure, protective eye shields and clothing should be used.
1.5.2 Electrical Hazards
The LBA-PC utilizes only low voltages, derived from the PCI bus in the host PC computer, therefore it
posses no risk of electrical shock.
When installing or removing the LBA-PC frame grabber card, the power to the computer should
always be disconnected.
The computer should always be operated with its covers in place and in accordance with its
manufacture’s recommendations.
Your computer should always be operated with a properly grounded AC power cord.
If your camera has its own power supply, then follow its manufacture’s operating procedures for safe
operation.
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Chapter 2 EQUIPMENT SETUP
2.1 Equipment Setup
This chapter describes how to get started using your LBA-PC. Follow these steps:
Step 1) Install your LBA-PC frame grabber card into your PC.
Step 2) Hook up your camera.
Step 3) Turn on the system and setup your windows environment.
Step 4) Launch the LBA-PC windows application.
Step 5) Configure the LBA-PC for your camera type.
Step 6) Begin collecting data from your camera.
Step 7) Other Configurations
Note: If you purchased your LBA-PC from Spiricon with a computer system and installation, then steps 1, 3, and 5
will have been done for you, and you can skip those steps.
2.1.1 Step 1 Installation of the Frame Grabber Board
This installation procedure applies to the following Spiricon products:
LBA-300PC
LBA-400PC (-D)
LBA-500PC (-D)
LBA-7XXPC (-D)
LBA-PC-PIII
CAUTION
Electrostatic Discharge can result in permanent damage
to electronic equipment. Always ground yourself by
touching the system cabinet before beginning the
following procedure. We strongly recommend using an
antistatic wrist strap attached to earth ground.
To install your LBA-PC frame grabber card, disconnect the AC power from your computer. Remove
the cover from your computer as described in your computers technical manual. Locate your PCI bus
slots. Most PC’s will have either 3 or 4 PCI slots. Select an unused PCI slot and remove the rear filler
bracket associated with that slot. (See figure below)
Note: If you purchased the optional 4 camera adapter, or the optional digital adapter then make sure that the slot
immediately to the left (viewed from the front of your PC) of the above PCI slot is also empty, and remove its rear
filler bracket also.
Figure 1
Carefully plug your LBA-PC frame grabber card into the PCI slot. Make sure that it is fully seated in
the PCI connector. Secure the end bracket with the screw that held in the filler plate. (See figure
below)
Figure 2
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The optional adapters use the rear panel opening, but do not plug into any of the PC expansion slots. Rather it is
provided with a short ribbon cable that plugs into the frame grabber card. (See figures below) Slide the adapter
into the rear opening and plug its cable into the frame grabber card. Secure the adapter bracket to the rear panel
with the screw that held in the filler plate.
Replace the cover of your computer. Restore the AC power to your computer.
Note: The location of the connectors may vary depending upon which frame grabber model is being installed. The
older LBA-400/500 series has a slightly different arrangement but the concept remains the same.
2.1.2 Step 2 Camera Connections
If you purchased a Pyrocam III to use with LBA-PC, disregard this section and refer to your Pyrocam
III Installation Guide. To use LBA-PC with your Pyrocam III you must launch LBA-PC from the
Pyrocam III Control Console.
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2.1.2.1 Analog Cameras
Connect the video out from your camera to the BNC connector on the LBA-PC frame grabber
card. This is the camera 1 input channel. If you have the 4-camera adapter option, then camera
2’s input is at the top, 3 in the middle, and 4 at the bottom of the adapter bracket assembly.
If you purchased your camera from Spiricon, you may have been provided with a Camera Control
Cable. This cable will usually provide power to your camera, and also control signals for your
camera’s electronic shutter (if it has one). Plug this cable between the appropriate 9-pin
connector on the frame grabber card, and into your camera. If you have the 4-camera adapter,
the additional cameras will need to be powered from an external power supply.
Your camera may also be supplied with a separate power supply. If so, connect it according to
the instructions provided with the camera.
2.1.2.2 Digital Cameras
Connect the digital output from your camera to the SCSI-2 type connector on the digital camera
adapter provided with the LBA-PC frame grabber card. If you purchased your camera from
Spiricon, you may have been provided with a Camera Control Cable. The cable will provide the
digital data connection to your camera, and may control signals for your camera’s electronic
shutter (if it has one).
Your camera may also be supplied with a separate power supply. Connect it according to the
instructions provided with the camera. Digital cameras may require additional software to control
the camera. Check with the camera manufacture and follow their instructions.
2.1.3 Step 3 LBA-PC Software Installation
After the frame grabber is physically installed in the computers PCI slot, and the PC is rebooted,
windows may tell you that it has found new hardware and ask you to install its driver. If this occurs
exit out of the found new hardware wizard without installing a driver and instead allow the LBA-PC
installation application to load the necessary files and drivers. After the installation application has
run, the hardware should be installed properly and you will not see the found new hardware wizard.
If problems do occur during the installation and the drivers are not properly installed, windows will
launch the new hardware wizard after the installation. If this situation should occur, tell the wizard to
search automatically for the necessary drivers, finish the wizard and reboot.
Here are two ways to install LBA-PC in Windows XP; the second method will also work for Windows
2000. Choose only one of the following:
First Method (Windows XP):
Step 1) Start Windows.
Step 2) Close all other Windows applications.
Step 3) Place the Spiricon CD into your CD-ROM drive.
Step 4) Windows XP will open a dialog that asks: “What do you want Windows to do?”
Step 5) Click “Open folder to view files”! Windows will open a folder in the CD’s root directory
showing folders for each of the shipped Spiricon applications.
Step 6) Double click the “LBA-PC” folder to open it.
Step 7) Double click the file in the LBA-PC folder named “Setup.exe” to launch the install. (The
windows file extensions, for this folder, must be set to viewable to see the “exe”
extension.)
Step 8) Follow the instructions in the installation dialogs.
Step 9) Reboot when installation is complete.
Step 10) LBA-PC should now be installed.
Second Method (Windows 2000 or XP):
Step 11) Start Windows.
Step 12) Close all other Windows applications.
Step 13) Place the CD in the CD-ROM drive
Step 14) Click Cancel when Windows asks you, “What do you want to do?
Step 15) From the Taskbar, click on Start, and then Run…
Step 16) In the Open line type: R:\LBA-PC\setup.exe and press <Enter> (Where “R” is the letter
of your CD-ROM drive).
Step 17) Follow the directions given in the installation dialogs.
Step 18) Reboot when installation is complete.
Step 19) LBA-PC should now be installed.
Note: After the installation is completed, The install dialogs will ask you if you want to restart windows, you must
answer yes to allow windows to restart and load the drivers, otherwise LBAPC will not function properly.
Note: Be sure to look at the LBA-PC ReadMe.txt file, before starting the LBA-PC application. This will bring you
up to date with any last minute information regarding the current version of the program.
The following Windows display settings may need adjustment to accommodate the LBA-PC
Application. Use Control Panel, Display, and Settings tab to make these adjustments:
• Screen resolution should be set for a minimum display size of 1024x768, bigger is better.
• Color Quality should be set to a minimum of 256 colors.
2.1.4 Step 4 Start LBA-PC
It’s recommended that you read portions of this operator’s manual to become familiar with the
operation and capabilities of the LBA-PC. The operator’s manual may be found on the installation disk
in PDF format. The PDF may also be found on the Spiricon web site at www.spiricon.com, just
following the LBA-PC product links. To start the Laser Beam Analyzer application go to windows
taskbar and select:
Start, Programs>, Spiricon>, LBA-PC>, LBA-PC.
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2.1.5 Step 5 Configure Camera Type
You should now have the LBA-PC application window on your monitor. The default configuration is
for a basic CW laser setup. This will allow you to verify that your camera and hardware are operating
correctly. If you received any error or warning messages while starting the LBA-PC application, refer
to the Error Messages section in this chapter before proceeding.
Before you can begin to collect data from your camera you must select the correct camera type. To
do this click Options, Camera..., and then click on the Camera drop down arrow. Select the
camera type that matches (or most closely matches) your specific camera, then click on OK.
To save this setup configuration... Click File, then Save Config...; enter a file name for this
configuration, then click OK. This file name has now become your new default configuration file.
This default will remain, from one program startup to the next, until you save or restore a new
configuration file; at which time, the last loaded or saved configuration becomes the default.
2.1.6 Step 6 Collect Data
Click the Start! menu item to begin collecting data from the camera. The frame display window
should immediately start changing colors corresponding to the intensity of the light reaching the
camera sensor, and the beam profile displays should change from a flat line in proportion to the light
intensity at the cursors.
If the room light is bright enough and/or the camera is sensitive enough, the frame display window
may be entirely white as the horizontal and vertical profile displays move upward and to the right,
respectively. If this is the case, reduce the amount of light reaching the camera sensor by shading it
with your hand. You should be able to obtain the entire range of colors shown on the color bar along
the right side of the display window. If you are using a camera with a lens, you should be able to
obtain a recognizable image by adjusting the lens f-stop and focus.
2.1.7 Step 7 Sample Configurations
You are probably now ready to try looking at a laser, and to go exploring the many operating options
of the LBA-PC.
CAUTION
Before you expose your camera to your laser beam, make sure that
the power/energy of your laser is well below the damage threshold
of your camera’s photo imager. You may also need to attenuate
your beam to bring it into a range that will prevent your camera’s
imager from saturating.
To help you get started, we have created a set of configuration files that you can restore. These
configuration files will adapt the LBA for a variety of basic operating modes.
However, these configuration files do not know which particular camera you are using. Therefore you
must select the appropriate camera to complete your setup. To select a camera, you will have to
repeat the procedure in Step 5.
The factory-supplied configuration files are write protected, so that you cannot accidentally lose or
overwrite them. Each of these file names begin with a ~ (tilde), for easy identification. Some
examples of these files are:
~lbapc.cfg The original default configuration.
~cw_basc.cfg A CW laser setup w/ basic results.
~cw_gaus.cfg A CW laser setup w/ Gauss Fit results.
~cw_hist.cfg A CW laser setup w/ Histogram display.
~cw_fram.cfg A CW laser setup w/ 8 frame averaging.
~cw_elip.cfg A CW laser setup w/ elliptical results.
~vt_toph.cfg Video trigger mode for a pulsed laser w/ Top Hat results enabled.
~to5gaus.cfg A Trigger Output at 5 Hz to fire a pulsed laser w/ Gauss Fit results.
~PYROCAM.cfg For use with Pyrocam I’s w/o digital camera option.
~PYRODIG.cfg For use with Pyrocam I’s w/ digital camera option.
2.2 Error Messages
The explanations of the following error messages assume that you are Windows savvy. If you find that
after reading an error message’s meaning, you still do not know what to do, then contact Spiricon’s
Service department for assistance.
You may encounter the following error messages:
LBA-PC device driver not found.
LBA-PC set to Off-Line mode
This error usually indicates that your LBA-PC frame grabber is either not installed or is not working. If
the frame grabber card is not detected by Windows then the device driver will not be loaded when the
system starts. This error may also indicate that the device driver was not properly installed. To
determine the cause, do the following:
Windows 2000
• Click on… Start, Settings, Control Panel.
Or for Windows XP
• Click on… Start, Control Panel.
Then for Both
• Double click on the System icon.
• Select the Hardware tab.
• Click on the Device Manager button.
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• Click on the Sound, video and game controllers listing.
• If the LBA-PC frame grabber was detected, and the device driver was not loaded you will see a
category called Unknown in the edit box listing of the Device Manager. If this occurs, double
click on the Unknown icon. You should see an entry called PCI Card. This indicates that the
device driver was not properly installed. To correct this problem, re-install the LBA-PC software.
• If you did not see the Unknown icon, then Windows did not detect the LBA-PC frame grabber
card. Check to see that your frame grabber card is properly installed. Sometimes PCI card slots
are defective, so you might also try another slot if all else seems to be in order.
If this device driver is not found, the LBA-PC program will complete loading, but the software will be
forced to the Off-Line mode. This means you can only view files and perform Post Processing of data
from and/or to data files.
Device Drive vX.XX detected.
LBA-PC requires vY.YY.
LBA-PC set to Off-Line mode.
If your current device driver version does not match the current LBA-PC version you will get this
message. This may occur if you have upgraded your LBA-PC application, but continue to use an old
device driver. Normally this should not happen, as the installation will install a new device driver
version with each upgrade. The LBA-PC application program will complete loading, but the software will
be forced to the Off-Line mode. This means you can only view files and perform Post Processing of
data from and/or to data files.
Unable to load LCA program file.
File Not Found.
This message will precede the following error message if the lcaXXX.exo file is not found or is not in the
same path as the LBA-PC application.
LBA-PC frame grabber
detected, but cannot initialized.
LBA-PC set to Off-Line mode.
The LBA-PC frame grabber contains a programmable LCA device. If this device fails to program during
application initialization, the above error message will occur. Contact the Spiricon Service Department
for assistance. The LBA-PC application program will complete loading, but the software will be forced
to the Off-Line mode. This means you can only view files and perform Post Processing of data from
and/or to data files.
Not Enough Memory for Frame Capture.
LBA-PC set to Off-Line mode.
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Doc. No. 10654-001, Rev 4.10
The device driver was unable to allocate enough memory in order to capture video frames. This may
occur the first time you boot the computer after installing the Frame Grabber card. Try rebooting the
computer. If the error continues to occur you will need to add memory to the computer. LBA-PC
requires a minimum 256 MB of main memory, 512 MB is recommended. If the error occurs after
adding memory then contact the Spiricon Service Department.
Frame Grabber not found.
LBA-PC set to Off-Line mode.
Your LBA-PC frame grabber card is either not installed, or not working. The LBA-PC application
program will complete loading, but the software will be forced to the Off-Line mode. This means you
can only view files and perform Post Processing of data from and/or to data files. Check to see that
your Frame Grabber card is properly installed. Contact the Spiricon Service Department for further
assistance.
Not a valid LBA-PC data file.
You are attempting to load a file that is not in a format that the LBA-PC can recognize. See loadable
file types.
2.3 Optional Equipment
Optional equipment can include the following items:
License: Multi-user site software license
Adapter: 4 Camera adapter
Digital Camera adapter
Camera: Selected camera, specify type
Interface cable
BNC cable
Camera manual (if supplied by camera manufacturer)
Camera power supply (if supplied by camera manufacturer)
Computer: PC compatible, Pentium or equivalent
Attenuator: Model LBS-100, BA-VIS, -NIR, or -BB beam attenuator
2.4 Connections
This topic describes the Camera Control (upper, 9 pin D-sub, female) and Trigger I/O (lower, 9 pin Dsub male) connectors on the LBA-PC rear panel. The schematic shown below describes the circuits on
these connectors. See the Specifications section for the respective drive limits of these signals.
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2.4.1 Camera Power
If your camera is a low power CCD style that runs on +12Vdc, then it may be powered from
connector J1 (J3 on LBA-3/4/500 frame grabbers) pin 6 (+12Vdc) and pin 5 (gnd).
Caution: Do not attempt to power more than ONE camera from the LBA-PC.
2.4.2 Shutter Controls Signals
The electronic shutter control signals are provided on as SHUT1, SHUT2, and SHUT3. These are TTL
level drive outputs. The Logic is positive true. The shutter settings are listed in the 8 lines of the
Shutter drop down edit control found in the main menu Options > Camera > Advanced dialog
box. The labeling of the shutter lines can be user modified to match the settings of a particular
camera. The line locations however, always correspond to the following TTL output drive levels:
Connector J2 (J5 on LBA-3/4/500 frame grabbers) pin 3 is the Trigger Out signal. This signal is
factory set to output +5Vdc pulses. You can change this signal to +12Vdc level pulses by moving
Jumper E1 (E4 on LBA-3/4/500 frame grabbers) to bridge pins 2-3.
Note: Jumper E1 (E4) controls the output signal level for both Trigger Out and Pass/Fail Out. Jumper position 1-2
yields a +5Vdc level; position 2-3 yields a +12Vdc level.
2.4.4 Pass/Fail Out
Connector J5 (J2 on LBA-7XX frame grabbers) pin 1 is the Pass/Fail Out signal. This signal is
factory set to output +5Vdc pulses. You can change this signal to +12Vdc level pulses by moving
Jumper E1(E4) to bridge pins 2-3. To enable this signal and select its mode of operation see the
Pass/Fail menu topic.
Note: Jumper E1 (E4) controls the output signal level for both Trigger Out and Pass/Fail Out. Jumper position 1-2
yields a +5Vdc level; position 2-3 yields a +12Vdc level
.
2.4.5 Trigger In
Connector J2 (J5 on LBA-3/4/500 frame grabbers) pin 2 is where you apply the Trigger In signal.
This input must be only a positive voltage with respect to ground. But you can pulse it with either a
high going or a low going pulse. You can program the Trigger In Polarity to respond to either a
positive (rising) or negative (falling) edge of this input signal.
2.4.6 Video In
The BNC connector (not shown above) is where you input either RS-170 or CCIR formatted black and
white video. The video input is terminated into 75 ohms. This is Camera input number 1. If you
have purchased the 4 camera option, three additional BNC connectors are provided on a separate
bracket assembly. These BNC connectors provide inputs for cameras number 2, 3 and 4 (top to
bottom).
2.5 Camera Control Cables
Many cameras shipped by Spiricon will be supplied with a Camera Control Cable. Connect this cable
between the camera and connector J1, (J3 on LBA-3/4/500 frame grabbers) the upper 9-pin D-sub
female. This cable will usually provide power to the camera, as well as permit the LBA-PC to control a
camera’s electronic shutter, if it has one. Cameras that derive power from a source other than the LBAPC will not usually be supplied with this cable.
If you are using the 4-camera option, any additional cameras must be powered from an external
source. To provide control of the shutter of any additional cameras, a special cable must be made that
connects all of the shutter inputs of the cameras in parallel. If you plan on using the automatic camera
sequencing you may also need a special cable to synchronize (genloc) the cameras.
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2.6 Special Setup for Pyrocam I Operation
You must use special setups if you want to successfully interface your Pyrocam I with a Model LBA-PC
frame grabber system. It is strongly recommended that you first become familiar with the operating
characteristics of both your Pyrocam I and LBA-PC before attempting to operate them together.
To operate your Pyrocam I with a model LBA-300PC or a LBA-400/500/708/710/712/714PC without a
digital camera option, see section 2.12.1.
To operate your Pyrocam I with model LBA-500PC-D or a model LBA-7XXPC-D, with the digital camera
option, see section 2.12.2.
2.6.1 Pyrocam I with Non-Digital LBA-PC’s
LBA-300/400/500/708/710/712/714PC w/o digital camera option
2.6.1.1 Pyrocam I Setup Requirements:
2.6.1.1.1 Configure Video Output
The Pyrocam must be configured to output monochrome video in CCIR format. To do this,
Dip Switch number 6 must be in the ON position. See Chapter 6 and Appendix A-6 in your
Pyrocam Operator’s Manual for details.
2.6.1.1.2 Configure Gain and Vertical Scale
Do not operate the Pyrocam I with the Gain switch set in the 10 position or with the
Vertical Scale set in the Auto or Manual x8 positions. Use only the 1 or 3 Gain setting and
Manual x1, x2 or x4 settings. The LBA will not be able to Ultracal in the gain equals 10 or
scale x8 setting positions, and the Ultracal will not remain valid if the Pyrocam is in the Auto
scale mode.
Note: You will need to temporarily attach your Pyrocam to either a VGA or a monochrome monitor to observe the
Vertical Scale settings.
2.6.1.1.3 Configure MONO/DIG/VGA switch to MONO position.
2.6.1.1.4 Install Video Cable
Connect the Pyrocam’s Video Output BNC to the Video Input BNC on the LBA-PC.
All other operating requirements for the Pyrocam I are still applicable, and must be set up
correctly. Don’t forget to periodically calibrate your Pyrocam.
Hint: First set up your Pyrocam to operate in one of its stand-alone configurations, and then connect it to the LBAPC only after you’re sure that it is operating satisfactorily with your laser.
2.6.1.2 Setup requirements for LBA-PC with pyrocam cameras:
Two files are provided for configuring the LBA to a Pyrocam I. They are ~PYROCAM.CFG and
~PYROCAM.CAM.
2.6.1.2.1 Setting up the Pyrocam Configuration.
Go to File. . . Restore Config. . . and set the configuration to ~PYROCAM.CFG.
2.6.1.2.2 Setting the camera type to Pyrocam
Go to Options. . . Camera dialog box and set the Camera selection to ~PYROCAM.CAM.
This may already have happened when you did the previous step.
The ~PYROCAM.CAM file is absolutely required for correct operation with your Pyrocam. The
~PYROCAM.CFG configuration is a good starting point configuration.
You will undoubtedly need to make changes to your configuration to suit your application.
Do so, and then save off your new configurations into new <filename>.cfg config files.
Remember the ~PYROCAM files are read only; so don’t try to use those file names.
2.6.1.3 Some Restrictions apply when interfaced to a Pyrocam I
2.6.1.3.1 Frame resolution restrictions
While you are not restricted from setting your frame Resolution to 512x480x1, it is not a
good idea. Keep your Resolution setting set to 128x120x4. Remember the Pyrocam creates
a 124x124 sized image, so setting higher resolutions only wastes memory and slows down
operations.
2.6.1.3.2 Zooming restrictions
In keeping with the above, do not use Hardware zooming. Only use Soft zooming, i.e.
double-right-mouse click in the Zoom window.
2.6.1.3.3 Restricted pixel regions
Because of the image size difference between the LBA and the Pyrocam I, as noted above,
the LBA will clip off 4 rows from the Pyrocam; two on top, and two on the bottom. Also the
LBA will have 4 dark columns; two on the left edge, and two along the right.
2.6.1.3.4 Scale and resolution restrictions
Note also that the Pixel Scale setting is set to 25mm, not 100mm, which is the actual pixel
scale of the Pyrocam I. This is because the image output by the Pyrocam in CCIR mode is 4
times over scanned in both the x and y directions. Thus the LBA’s 1x resolution comes out to
be 1/4th the 4x resolution. Keep this in mind if you plan to change the scaling because of
placing the beam altering optics in the beam path.
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2.6.1.3.5 Camera settings restrictions
Under no circumstances, make any changes to the Advanced. . . Camera settings for the
Pyrocam I.
2.6.1.4 Image synchronization considerations
The Pyrocam I’s CCIR video output is always producing video images at the rate of 25 frames per
second. Furthermore, it only changes output image after acquiring and processing a new image.
Thus the rate of a new output beam image is a function of many variables, including Pulse or
Chop rates, image processing time, and results computational times.
If you are using a Pulsed laser with your Pyrocam I, the Pyrocam will continue to output the
image of the last laser pulse that it receives. As a result, your LBA will continue to collect data
frames that are multiples of the last pulse received by the Pyrocam. To relieve this, you may
want to set up a Trigger input to the LBA. This will cause, at the most, only one image to be
acquired for each Laser Pulse. This can be a tricky situation since the Pyrocam does take a little
time to process each image, and that time will vary somewhat from image to image. Also, if your
laser is triggered faster than the Pyrocam can acquire and update its CCIR display, it will skip
pulses. Thus the LBA can still end up acquiring multiples of some of the processed pulses. You
can also try the solution described below for the Chopped-operating mode.
The exact same type of problem occurs in Chopped mode. The chop frequencies must be either
24Hz or 48Hz. Thus, the CCIR image can never be updating as fast as the chopper is triggering
the Pyrocam. Consequently, the CCIR output is always creating multiple frames of the same
beam profile. In this case, you may want to set the LBA’s Capture interval to a value that will
eliminate or reduce multiple frame captures.
2.6.2 Pyrocam I with Digital LBA-PC’s
LBA-500/7XXPC-D w/ Digital Camera Option
2.6.2.1 Pyrocam I setup requirements:
To use this interface method, your LBA-500/7XXPC must be equipped with the digital camera
option (-D), and your Pyrocam I must be of a later design that has digital output capability. Early
versions of the Pyrocam were not equipped with digital outputs. If your Pyrocam I does not have
a 50 pin connector on its rear cover it can not be interfaced as a digital camera. However, you
can still interface it by using the analog method described in the LBA-300PC interface topic.
Alternately, you can contact Spiricon’s service department and arrange to have your Pyrocam I
upgraded with digital camera output capability.
NOTICE: When interfacing with a Pyrocam I, DO NOT USE THE ULTRACAL! Feature of the LBA-PC. Rather, it
is ESSENTIAL that you periodically re-calibrate the Pyrocam I. Calibrating the Pyrocam I is the only calibration
that should be used with this type of interface.
The Pyrocam must be set to output digital video. This is accomplished by setting the
MONO/DIG/VGA switch to the LBA position. See Chapter 6 in your Pyrocam Operator’s
Manual.
2.6.2.1.2 Connect cable
Connect the Pyrocam’s digital output to the digital input connector of the LBA-500PC. A
special interface cable is required to make this connection. If you ordered your Pyrocam I,
LBA-PC and LBA-Digital Option together as a system, then a cable was supplied.
2.6.2.1.3 Pyrocam settings
With the Pyrocam set to the DIG mode, the Vertical Scale setting has no effect on the
output. However, the Gain switch is still operating and can be set to any position. All other
operating requirements for the Pyrocam I are still applicable, and must be set up correctly.
Don’t forget to periodically Calibrate your Pyrocam.
Hint: First set up your Pyrocam to operate in one of its stand-alone configurations, and then connect it to the LBAPC only after you’re sure that it is operating satisfactorily with your laser.
2.6.2.2 LBA-500/7XXPC-D Setup requirements:
Two files are provided for configuring the LBA-PC digital interface to a Pyrocam I. They are
~PYRODIG.CFG and ~PYRODIG.CAM.
2.6.2.2.1 Set the Pyrocam configuration
Go to file. . . Restore Config. . . and set the configuration to ~PYRODIG.CFG.
2.6.2.2.2 Set the camera options
Go to Options. . . Camera dialog box and set the Camera selection to ~PYRODIG.CAM.
This may already have happened when you did the previous step.
The ~PYRODIG.CAM file is absolutely required for correct operation with your Pyrocam. The
~PYRODIG.CFG configuration is a good starting point configuration.
You will undoubtedly need to make changes to your configuration to suit your application.
Do so, and then save off your new configurations into new <filename>.cfg config file.
Remember the ~PYRODIG files are read only, so don’t try to use those file names.
Under no circumstances make any changes to the Advanced… Camera settings for the
Pyrocam I.
Operator’s Manual LBA-PC
30
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