User Manual
BeamMaster™-USB
Beam Diagnostics Measurement System
User Manual
BeamMaster-USB
Beam Diagnostics Measurement System
27650 SW 95th Ave.
Wilsonville, OR 97070
BeamMaster-USB User Manual
This document is copyrighted with all rights reserved. Under the copyright
laws, this document may not be copied in whole or in part or reproduced in
any other media without the express written permission of Coherent, Inc.
Permitted copies must carry the same proprietary and copyright notices as
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Coherent, the Coherent Logo, and BeamMaster are trademarks or
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trademarks are the property of their respective owners.
Patents referenced in this user manual were active as of the printing date
of the manual (see last page for date). The patents referenced herein may
have expired. You are advised to check to see if the patents are still active:
http://portal.uspto.gov/external/portal/pair.
Every effort has been made to ensure that the data given in this document
is accurate. The information, figures, tables, specifications and schematics
contained herein are subject to change without notice. Coherent makes no
warranty or representation, either expressed or implied with respect to this
document. In no event will Coherent be liable for any direct, indirect,
special, incidental or consequential damages resulting from any defects in
its documentation.
Technical Support
In the US:
Should you experience any difficulties with your laser or need any
technical information, please visit our website: www.Coherent.com.
Additional support can be obtained by contacting our Technical Support
Hotline at 1.800.367.7890 (1.408.764.4557 outside the U.S.), or e-mail
Product.Support@Coherent.com. Telephone coverage is available around
the clock (except U.S. holidays and company shutdowns).
If you call outside our office hours, your call will be taken by our answering
system and will be returned when the office reopens.
If there are technical difficulties with your laser that cannot be resolved by
support mechanisms outlined above, e-mail, or telephone Coherent
Technical Support with a description of the problem and the corrective
steps attempted. When communicating with our Technical Support
Department via the web or telephone, the Support Engineer responding to
your request will require the model and Laser Head serial number of your
laser system.
Outside the US:
If you are located outside the U.S., visit our website for technical
assistance or contact our local service representative. Representative
phone numbers and addresses can be found on the Coherent website:
www.Coherent.com.
Coherent provides telephone and web technical assistance as a service to
its customers and assumes no liability thereby for any injury or damage
that may occur contemporaneous with such services. These support
services do not affect, under any circumstances, the terms of any warranty
agreement between Coherent and the buyer. Operation of any Coherent
laser with any of its interlocks defeated is always at the operator's own risk
ii
Table of Contents
TABLE OF CONTENTS
Preface .................................................................................................................................. ix
U.S. Export Control Laws Compliance ................................................................................ ix
Publication Updates .............................................................................................................. ix
Signal Words and Symbols in this Manual ........................................................................... ix
Signal Words ................................................................................................................ ix
Symbols .........................................................................................................................x
Section One: Introduction .......................................................................................... 1-1
System Contents ................................................................................................................. 1-1
Theory of Operation............................................................................................................ 1-3
BeamMaster-USB and Beam Diagnostics .......................................................................... 1-5
CCD Array Camera Diagnostics................................................................................ 1-5
Scanning Aperture Diagnostics ................................................................................. 1-5
BeamMaster-USB Solution ....................................................................................... 1-5
Section Two: Setup .......................................................................................................... 2-1
Hardware Installation.......................................................................................................... 2-1
Care and Handling .............................................................................................................. 2-2
Detector Head ............................................................................................................ 2-2
Filters ......................................................................................................................... 2-2
Laser Safety ............................................................................................................... 2-2
System Requirements ......................................................................................................... 2-3
Installing the Software ........................................................................................................ 2-3
Connecting the Detector ..................................................................................................... 2-3
Selecting a Filter ................................................................................................................. 2-3
Focused Spot.............................................................................................................. 2-4
Installing the Filters ................................................................................................... 2-4
Custom Filters and Power Calibration....................................................................... 2-4
Installing the USB External Box ........................................................................................ 2-4
Windows XP .............................................................................................................. 2-4
Windows Vista and Windows 7 ................................................................................. 2-6
Running the Software ......................................................................................................... 2-7
Configuring the Software.................................................................................................... 2-9
Section Three: Operation............................................................................................ 3-1
Title Bar .............................................................................................................................. 3-1
Menu Bar ............................................................................................................................ 3-2
Selecting a Menu ....................................................................................................... 3-2
Tool Bar .............................................................................................................................. 3-2
Tool Bar Buttons ........................................................................................................ 3-2
Inactive Tool Buttons................................................................................................. 3-2
Toggle Tool Buttons................................................................................................... 3-3
Hide the Tool Bar....................................................................................................... 3-3
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BeamMaster-USB User Manual
System Errors............................................................................................................. 3-3
Date and Time............................................................................................................ 3-3
Tool Bar Command.................................................................................................... 3-3
Window Area ...................................................................................................................... 3-3
Arranging Windows................................................................................................... 3-4
Status Bar ............................................................................................................................ 3-4
Status Bar Panels........................................................................................................ 3-4
View Status Bar.......................................................................................................... 3-5
Keyboard Operation............................................................................................................ 3-5
Help............................................................................................................................ 3-5
Selecting a Menu Item ............................................................................................... 3-5
Closing a Menu .......................................................................................................... 3-5
Dialog Boxes.............................................................................................................. 3-6
Text Entry.......................................................................................................... 3-6
ESC Key .................................................................................................................... 3-6
ENTER Key ............................................................................................................... 3-6
TAB Key .................................................................................................................... 3-6
Methods of Data Entry........................................................................................................ 3-7
Check Box.................................................................................................................. 3-7
Radio Button .............................................................................................................. 3-8
Value Entry Box......................................................................................................... 3-8
Color .......................................................................................................................... 3-9
Selecting a Color............................................................................................... 3-9
Section Four: Menus and Commands ................................................................ 4-1
File Menu ............................................................................................................................ 4-1
View File.................................................................................................................... 4-2
Create Filter File ........................................................................................................ 4-2
Print............................................................................................................................ 4-4
Print Window ............................................................................................................. 4-6
Print Screen................................................................................................................ 4-7
Page Setup.................................................................................................................. 4-8
Start/Stop Log ............................................................................................................ 4-9
Log Setup ................................................................................................................... 4-9
Start Link ................................................................................................................. 4-11
Making a Null-Modem Cable ......................................................................... 4-12
Link Setup................................................................................................................ 4-13
Port.................................................................................................................. 4-15
Transmit .......................................................................................................... 4-15
Bits per second................................................................................................ 4-16
Data Bit ........................................................................................................... 4-17
Parity Bit ......................................................................................................... 4-18
Stop Bit ........................................................................................................... 4-19
Handshake....................................................................................................... 4-20
Slave Mode .............................................................................................................. 4-21
Exit........................................................................................................................... 4-21
iv
Table of Contents
View Menu........................................................................................................................ 4-22
Power ....................................................................................................................... 4-22
Filter................................................................................................................ 4-23
Null ................................................................................................................. 4-24
Power Setup .................................................................................................... 4-26
Profile V................................................................................................................... 4-31
Gaussian.......................................................................................................... 4-32
Profile Zoom ................................................................................................... 4-32
Profile Setup ................................................................................................... 4-33
Profile W.................................................................................................................. 4-35
Position .................................................................................................................... 4-36
Position Setup ................................................................................................. 4-37
Projection ................................................................................................................. 4-39
Projection Setup .............................................................................................. 4-40
Plot ........................................................................................................................... 4-44
Reset................................................................................................................ 4-45
Save Plot ......................................................................................................... 4-45
Plot Setup ........................................................................................................ 4-46
Chart......................................................................................................................... 4-48
Save Chart....................................................................................................... 4-49
Chart Setup ..................................................................................................... 4-50
View Tool Bar .......................................................................................................... 4-52
View Status Bar........................................................................................................ 4-52
Options Menu ................................................................................................................... 4-53
Load Configuration File........................................................................................... 4-54
Save Configuration File ........................................................................................... 4-55
Configuration File Contents............................................................................ 4-55
Save Image as .......................................................................................................... 4-55
Save Snapshot .......................................................................................................... 4-56
View Snapshot ......................................................................................................... 4-56
Saving Data in Text File .......................................................................................... 4-57
Importing Files into Excel .............................................................................. 4-57
Start Test .................................................................................................................. 4-57
Test Setup........................................................................................................ 4-58
Step Mode ................................................................................................................ 4-59
Server Mode............................................................................................................. 4-60
User Data ................................................................................................................. 4-61
Close All Windows .................................................................................................. 4-61
Save Settings on Exit ............................................................................................... 4-61
System Menu .................................................................................................................... 4-61
System Setup............................................................................................................ 4-62
Wavelength ..................................................................................................... 4-62
Clip Level ....................................................................................................... 4-63
Average ........................................................................................................... 4-63
Head Tilt ......................................................................................................... 4-64
Mode ............................................................................................................... 4-64
Beep ................................................................................................................ 4-65
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BeamMaster-USB User Manual
Color Scheme.................................................................................................. 4-65
Add Detector Head .................................................................................................. 4-68
Windows Menu ................................................................................................................. 4-69
Help Menu ........................................................................................................................ 4-70
Contents ................................................................................................................... 4-71
Search for Help On .................................................................................................. 4-71
Active Window ........................................................................................................ 4-71
Coherent on the Web................................................................................................ 4-72
About ....................................................................................................................... 4-72
Section Five: Hardware ............................................................................................... 5-1
Dimensions and Distances .................................................................................................. 5-1
BM-3 InGaAs Detector Head ............................................................................................. 5-2
BM-3 Silicon-UV Detector Head ....................................................................................... 5-3
BM-7 InGaAs Detector Head ............................................................................................. 5-4
BM-7 Silicon-UV Detector Head ....................................................................................... 5-5
USB External Box .............................................................................................................. 5-6
Section Six: Calculations Summary ..................................................................... 6-1
Accuracy ............................................................................................................................. 6-1
Background Noise...................................................................................................... 6-2
Relative Total Power........................................................................................................... 6-2
Beam Width ........................................................................................................................ 6-3
Beam Centroid Location ..................................................................................................... 6-3
Gaussian Fit ........................................................................................................................ 6-4
Gaussian Fit Diameter ............................................................................................... 6-5
Gaussian Correlation Coefficient............................................................................... 6-5
Ellipticity ............................................................................................................................ 6-6
Speed Issues ........................................................................................................................ 6-6
Section Seven: Troubleshooting .............................................................................. 7-1
System Errors...................................................................................................................... 7-1
Analysis Errors ................................................................................................................... 7-2
Section Eight: Head Accessories and Drawings ........................................... 8-1
BeamMaster-USB Rotation Mount..................................................................................... 8-1
Fiber Adapter ...................................................................................................................... 8-2
C-Mount Adapter Ring ....................................................................................................... 8-2
Section Nine: Windows Control Library .......................................................... 9-1
Overview............................................................................................................................. 9-1
GetCorrelation .................................................................................................................... 9-3
GetGaussianWidth .............................................................................................................. 9-4
GetProfileWidth .................................................................................................................. 9-5
ProfileData .......................................................................................................................... 9-6
ProfileUnit .......................................................................................................................... 9-7
vi
Table of Contents
Start ..................................................................................................................................... 9-8
Stop ..................................................................................................................................... 9-8
CurrentStatus....................................................................................................................... 9-9
Position ............................................................................................................................... 9-9
Power ................................................................................................................................ 9-10
ProjectionData .................................................................................................................. 9-10
ProjectionUnit ................................................................................................................... 9-10
Wavelength ....................................................................................................................... 9-11
OnErrorMessage ............................................................................................................... 9-11
OnUpdateData .................................................................................................................. 9-11
ErrorStatus ........................................................................................................................ 9-12
Section Ten: Warranty and Service .................................................................... 10-1
Warranty............................................................................................................................ 10-1
Obtaining Service ............................................................................................................. 10-2
Product Shipping Instructions........................................................................................... 10-3
Index ................................................................................................................................. Index-1
LIST OF FIGURES
3-1.
3-2.
3-3.
BeamMaster-USB Window Interface—Main Elements.................................................. 3-1
Tool Bar Buttons .............................................................................................................. 3-2
Status Bar ......................................................................................................................... 3-4
4-1.
4-2.
4-3.
4-4.
4-5.
Null-Modem with 25 Pins on Both Sides ...................................................................... 4-12
Null-Modem with 9 Pins on One Side and 25 Pins on the Other Side .......................... 4-12
Null-Modem with 9 Pins on Both Sides ........................................................................ 4-13
Example of 2D Resolution............................................................................................. 4-42
Example of 3D Medium Wire Density .......................................................................... 4-42
5-1.
5-2.
5-3.
5-4.
5-5.
5-6.
5-7.
5-8.
Internal Dimensions ......................................................................................................... 5-1
Distance to Image Plane .................................................................................................. 5-1
BM-3 InGaAs Detector Head Dimensions ...................................................................... 5-2
BM-3 Silicon-UV Detector Head Dimensions ................................................................ 5-3
BM-7 InGaAs Detector Head Dimensions ...................................................................... 5-4
BM-7 Silicon-UV Detector Head Dimensions ................................................................ 5-5
USB External Box (front view) ....................................................................................... 5-6
USB External Box (rear view)......................................................................................... 5-6
8-1.
8-2.
8-3.
BeamMaster-USB Rotation Mount.................................................................................. 8-1
Fiber Adapter ................................................................................................................... 8-2
C-Mount Adapter Ring .................................................................................................... 8-2
vii
BeamMaster-USB User Manual
LIST OF TABLES
2-1.
Hardware Requirements .................................................................................................. 2-3
3-1.
Software Shortcuts and Control Keys.............................................................................. 3-6
5-1.
5-2.
5-3.
5-4.
5-5.
BM-3 InGaAs Detector Head Specifications................................................................... 5-2
BM-3 Silicon-UV Detector Head Specifications............................................................. 5-3
BM-7 InGaAs Detector Head Specifications................................................................... 5-4
BM-7 Silicon-UV Detector Head Specifications............................................................. 5-5
USB External Box Specifications.................................................................................... 5-6
9-1.
Error Status Table........................................................................................................... 9-12
10-1. Coherent Service Centers............................................................................................... 10-2
viii
Preface
Preface
This manual contains user information for the BeamMaster™-USB
Beam Diagnostics Measurement System.
U.S. Export
Control Laws
Compliance
It is the policy of Coherent to comply strictly with U.S. export
control laws.
Export and re-export of lasers manufactured by Coherent are subject
to U.S. Export Administration Regulations, which are administered
by the Commerce Department. In addition, shipments of certain
components are regulated by the State Department under the International Traffic in Arms Regulations.
The applicable restrictions vary depending on the specific product
involved and its destination. In some cases, U.S. law requires that
U.S. Government approval be obtained prior to resale, export or
re-export of certain articles. When there is uncertainty about the
obligations imposed by U.S. law, clarification should be obtained
from Coherent or an appropriate U.S. Government agency.
Publication
Updates
To view information that may have been added or changed since this
publication went to print, connect to www.Coherent.com.
Signal Words
and Symbols in
this Manual
This documentation may contain sections in which particular
hazards are defined or special attention is drawn to particular conditions. These sections are indicated with signal words in accordance
with ANSI Z-535.6 and safety symbols (pictorial hazard alerts) in
accordance with ANSI Z-535.3 and ISO 7010.
Signal Words
Four signal words are used in this documentation: DANGER,
WARNING, CAUTION and NOTICE.
The signal words DANGER, WARNING and CAUTION designate the degree or level of hazard when there is the risk of injury:
DANGER!
Indicates a hazardous situation that, if not avoided, will result in
death or serious injury. This signal word is to be limited to the
most extreme situations.
ix
BeamMaster-USB User Manual
WARNING!
Indicates a hazardous situation that, if not avoided, could result
in death or serious injury.
CAUTION!
Indicates a hazardous situation that, if not avoided, could result
in minor or moderate injury.
The signal word “NOTICE” is used when there is the risk of property damage:
NOTICE!
Indicates information considered important, but not hazardrelated.
Messages relating to hazards that could result in both personal injury
and property damage are considered safety messages and not property damage messages.
Symbols
The signal words DANGER, WARNING, and CAUTION are
always emphasized with a safety symbol that indicates a special
hazard, regardless of the hazard level:
This symbol is intended to alert the operator to the presence of
important operating and maintenance instructions.
This symbol is intended to alert the operator to the danger of
exposure to hazardous visible and invisible laser radiation.
This symbol is intended to alert the operator to the presence of
dangerous voltages within the product enclosure that may be of
sufficient magnitude to constitute a risk of electric shock.
x
Preface
This symbol is intended to alert the operator to the danger of
Electro-Static Discharge (ESD) susceptibility.
This symbol is intended to alert the operator to the danger of
crushing injury.
This symbol is intended to alert the operator to the danger of a
lifting hazard.
xi
BeamMaster-USB User Manual
xii
Introduction
SECTION ONE: INTRODUCTION
In this section:
•
System contents (this page)
•
Theory of operation (p. 1-3)
•
BeamMaster-USB and beam diagnostics (p. 1-5)
The BeamMaster-USB is a beam diagnostics measurement system
for real-time measurement and display of CW lasers, fiber-optic, and
laser diode beam profiles. The BeamMaster-USB is designed to
provide maximum flexibility, speed, and user-friendliness for a
variety of beam measurements. Measurements include: beam width,
shape, position, power, and intensity profiles. Some of the applications include: beam alignment, on-line monitoring, gaussian fit analysis, beam position measurement, laser beam optimization, and
quality control.
The BeamMaster-USB External Box and software can be integrated
into a variety of compatible PC computer platforms running under a
Windows XP, Windows Vista, or Windows 7 operating system. The
BeamMaster-USB system will meet a wide range of automated laser
analysis requirements in the laboratory, factory, and field.
System
Contents
A basic BeamMaster-USB system includes:
Detector Head
•
BM-3 (InGaAs)—a three knife-edge head for the 800 to 1800
nm wavelength range.
•
BM-3 (Silicon-UV)—a three knife-edge head for the 190 to
1100 nm wavelength range.
•
BM-7 (InGaAs)—a seven knife-edge head for the 800 to 1800
nm wavelength range.
•
BM-7 (Silicon-UV)—a seven knife-edge head for the 190 to
1100 nm wavelength range.
USB External Box
This device is used for connecting the various detector heads to the
computer via a USB 2.0 port.
1-1
BeamMaster-USB User Manual
Installation CD
The CD includes:
•
BeamMaster-USB software
•
User manual (in PDF format)
•
Readme.txt file
•
Required support files
Printed Manual
Filter Kit
The BM-7 and BM-3 Silicon heads come with two NG neutral
density filters. The NG4 & NG9 filters are provided to extend the
power range of the head from 5 mW to 1W. The NG4 filter comes
pre-installed and provides 10% transmission at 633 nm. The NG9 is
in a protective filter case and provides 0.5% transmission at 633 nm.
The filter kit also includes a hex wrench that can be used for swapping the filters, a filter blank for 100% transmission, and filter transmission data.
Mounting Post
The mounting post is 105 mm long and has an 8-32 thread. The post
is used for mounting the detector head.
Declaration of Compliance to CE Mark
This system can be ordered pre-installed in a variety of computer
configurations
1-2
Introduction
Theory of
Operation
The BeamMaster-USB measures beam intensity profiles, widths,
position, power, and the basic beam shape of CW lasers. The
detector head utilizes multiple knife-edges to scan across the beam
and capture the intensity distribution of the laser.
A simplification of a BeamMaster-USB detector head is shown
below.
The rotating drum contains multiple knife-edge apertures (only one
is shown in this diagram). As an aperture passes between the laser
beam and the stationary power sensor, there is a period where the
entire beam is allowed to reach the sensor. At this point, the BeamMaster-USB can measure the total power of the beam. As the aperture is scanned across the beam, the knife-edge blocks off an increasingly larger portion of the beam power. The power sensor measures
this change in power versus knife-edge position, creating a power
versus position plot, as shown below.
The analog power reading is digitized with a high speed A/D
(Analog-to-Digital) converter. At the same time, the exact position
of the knife-edge is monitored so that beam width information can
be determined. The beam profile for each knife-edge is then
obtained in software by taking the derivative of the measured power
curve. The beam profile is perpendicular to the knife-edge and each
1-3
BeamMaster-USB User Manual
point of the profile is the sum of all intensities along the axis of the
knife-edge at that knife- edge position. The digitized beam profiles
are then stored in memory.
The BeamMaster-USB obtains profiles from multiple knife-edges at
different orientations and has the ability to use this information to
create 2D and 3D plots of the beam. The mathematical reconstruction process is known as “Reconstructive Tomography.” The same
type of process is used by X-ray systems to create X-ray images. A
larger number of knife-edges will create better detail on
non-gaussian beams. For a beam distribution that is significantly
non-gaussian, the standard seven knife-edge system can reconstruct
a plot that closely matches the real beam.
There are two primary knife-edges used for the main profile display.
These knife-edges generate profile—referred to as W and V—that
are set perpendicular to each other and are oriented at 45 degrees in
relation to the base of the head. These profiles are used to provide
beam width, position, and gaussian fit analysis. The other
knife-edges are used for reconstructive tomography.
To increase the usable power range of the Silicon heads to 1W, the
NG4 (~ 10% transmission) and NG9 (~ 0.5% transmission), filters
can be inserted between the knife-edge and the sensor. This location
will prevent the attenuation from distorting the beam, since it is
behind the scanning plane.
1-4
Introduction
The data is combined with user-selected graphics and calculated
analysis results for display in a user-controlled window. A wide
variety of system functions also provide the ability to print information, perform pass/fail testing, control capture rates, and log data.
BeamMaster-USB
and Beam
Diagnostics
Two general types of instruments measure laser beam intensity. The
following paragraphs explain the strengths and weaknesses of both
measurement techniques. The BeamMaster-USB bridges the gap
between the two techniques.
CCD Array
Camera
Diagnostics
Camera-based diagnostics use an array of sensor pixels to measure
simultaneously the intensity over the face of the entire laser beam.
This allows them to capture data from pulsed lasers and display the
data in 2D contour plots and 3D views. The pixels are of finite size
(6 to 12 µm) and the smallest measurable beam size is typically 40
times larger than the pixel. CCD camera-based diagnostics are very
sensitive and require high optical density laser grade filters to
prevent saturation and beam distortion. In some cases, this is not
desirable or practical.
Scanning Aperture
Diagnostics
Scanning Aperture Diagnostics operate with either knife-edges or
slits. The knife-edge method is described in “Theory of Operation”
(p. 1-3). The Slit method is similar to the knife-edge method but uses
a very narrow slit instead of a knife-edge. These systems usually
obtain one or two high-resolution beam profiles from which accurate measurements can be made. The resolution along the scanned
profiles is very high compared to camera systems, enabling resolution in “tenths of microns” instead of “tens of microns” in a camera
system. Consequently, they can measure beam widths down to
several microns. Their dynamic range is much larger than CCD
camera systems, enabling measurement at relatively high power.
They are unable to provide true representative 2D intensity contour
plots of the beam. They are unable to measure pulsed lasers, but
offer measuring capabilities at wavelengths where the CCD cameras
cannot work, utilizing sensors other than silicon.
BeamMaster-USB
Solution
The BeamMaster-USB bridges the gap between CCD and scanning
aperture beam diagnostics. The BeamMaster-USB is based on Scanning Aperture technology so it has all the benefits of a Scanning
Aperture System, but is enhanced with a patented multiple scanning
knife-edge system. Unlike standard Scanning Aperture systems, the
1-5
BeamMaster-USB User Manual
seven scanning knife-edges and a mathematical process called
“Reconstructive Tomography” provide 2D and 3D reconstructions
of CW laser beams. Because the BeamMaster-USB uses knife-edges
as opposed to slits, it can measure laser power. BeamMaster-USB
can also measure beams up to 1 watt with its unique ability to insert
filters behind the scanning knife-edge, thus preventing distortion of
the beam measurement.
1-6
Setup
SECTION TWO: SETUP
In this section:
•
Hardware installation (this page)
•
Care and handling (p. 2-2)
•
System requirements (p. 2-3)
•
Installing the software (p. 2-3)
•
Connecting the detector (p. 2-3)
•
Selecting a filter (p. 2-3)
•
Installing the USB External Box (p. 2-4)
•
Running the software (p. 2-7)
•
Configuring the software (p. 2-9)
Hardware
Installation
Before installing the BeamMaster-USB hardware into the
computer, make sure the PC computer system meets the requirements listed under “System Requirements” (p. 2-3).
NOTICE!
The BeamMaster-USB warranty is void if a power-protection
outlet (surge protector) is not used. A surge protector will
protect the BeamMaster-USB from high-voltage spikes, power
fluctuations, and surges associated with laser laboratory equipment.
2-1
BeamMaster-USB User Manual
Care and
Handling
Detector Head
The detector head is a precision instrument and should be handled
with care. If the head is dropped it may be damaged. When not in
use, keep the cap over the aperture to prevent dust from accumulating on the sensor and the knife-edges. The knife-edges are delicate and will be damaged if they hit any object. The filters, (if
provided) are the only objects that may be safely inserted into the
detector head. Do not remove the covers, since the internal systems
are delicate and can easily be damaged.
Filters
Filters are provided with the silicon versions of the detector heads.
These filters have been precisely calibrated to a particular BeamMaster-USB head; therefore, they share the same serial number.
Dust, scratches, and other types of contamination will degrade the
accuracy of the system. Keep unused filters in the storage case. Be
gentle when handling these fragile items—see “Selecting a Filter”
(p. 2-3) for more information.
Laser Safety
WARNING!
Comply with all relevant laser safety procedures and precautions when using this device. The instrument will reflect a
portion of the laser light and the resulting diffuse and specular
reflections may be dangerous.
2-2
Setup
System
Requirements
To run the BeamMaster-USB, the computer system must meet the
minimum requirements shown in the following table. Where
helpful, there are also system recommendations.
Table 2-1. Hardware Requirements
Minimum Requirement
Recommended
CPU
Pentium IV Core 2
Pentium IV Core 2 Duo
System RAM
1 GB
2 GB
CD drive
Required
Hard disk
200 MB free
Operating system
Windows XP, Windows Vista, or Windows 7
Mouse
Microsoft mouse or compatible pointing device
VGA
128 MB memory
300 MB free
512 MB memory
High speed USB 2.0 port Required
Installing the
Software
To install the software, put the CD disk into the CD-ROM drive and
wait for an automatic start of the BeamMaster-USB installation
process. Refer to “Running the Software” (p. 2-7).
Connecting the
Detector
The detector head has a cable with a 15-pin connector. The detector
cable is connected to the corresponding 15-pin connector on the
USB External Box.
Selecting a Filter
When a Silicon head is ordered with a BeamMaster-USB, it will
come with two filters. This section will help the user determine
which filter to use. Here is the general guideline:
No filter:
Power up to 5 mW
NG4 filter:
Power up to 50 mW
NG9 filter:
Power up to 1 W
The actual filter transmission is dependent on wavelength and can
also vary from batch to batch. The transmission values for a particular wavelength can be found in the filter files included with the
software (NG4.FLT and NG9.FLT).
2-3
BeamMaster-USB User Manual
Focused Spot
When measuring a focused beam at a focused spot, the system will
usually need attenuation. A convenient way to determine the correct
attenuation is to first measure the power of the beam before focusing
and then focus and measure the power with the detector head using
the NG4 10%. If the power reading is low by more than 10% of the
unfocused reading, use the NG9 0.5% filter. The power densities
associated with focused beams can easily saturate the silicon
detector. A saturated detector output will result in a low power
reading.
Installing the Filters
1.
Remove the blank filter plate with the supplied Allen wrench.
2.
Carefully insert the desired filter
3.
Secure the new filter with the Allen wrench.
NOTICE!
Dust, scratches, and other types of contamination will degrade
the accuracy of the filters. Keep unused filters in the storage
case.
Custom Filters and
Power Calibration
A custom filter file can be made to accommodate other filters for
absolute power calibration. See help for “Create Filter File” under
the File menu.
Installing the
USB External Box
Windows XP
1.
Plug the BeamMaster-USB External Box into a high-speed
USB 2.0 port.
2-4
Setup
2.
Insert the USB connector into the USB port of the computer.
When the following message appears, press the Next button.
3.
Click the Finish button on the following screen.
4.
Click the Next button on the following screen.
2-5
BeamMaster-USB User Manual
Windows Vista and
Windows 7
5.
Press the Finish button to complete the installation.
1.
Plug the BeamMaster-USB External Box into a high-speed
USB 2.0 port.
2.
Insert the USB connector into the USB port of the computer.
The following messages display:
2-6
Setup
3.
Running the
Software
After completion of the installation, verify that the device was
properly installed by looking under System Properties, Device
Manager Tab (DOBAS USB Device), as shown below:
To run the software, do one of the following:
•
Click on the BeamMaster-USB icon (
•
In Windows, click Start, select Programs, and then choose
BeamMaster-USB from the list.
The following Welcome screen is displayed:
2-7
) on the desktop, or
BeamMaster-USB User Manual
The software will perform a hardware check and will display the
following error message if the USB manifold box is not found:
If there is no error, the software performs a test to identify the
measuring head being connected to the USB manifold box:
If the software cannot detect a measuring head, the following error
message displays:
If there is no error, the software performs a test to identify the
measuring head type being connected to the USB manifold box:
2-8
Setup
The screen shown below will appear only in one of the following
cases:
•
Whenever a measuring head is being connected to the manifold box and the calibration files in use do not match. If this is
the case, you will need to change the head S/N—refer to “Add
Detector Head” (p. 4-68) for more information.
•
When the measuring head is malfunctioning. If this happens,
contact Coherent—refer to “Obtaining Service” (p. 10-2) for
contact information.
The following error message appears when the hardware test is
completed and no hardware was found. In this case, you can start the
software in Viewer/Client mode by clicking the Yes button.
Several common symptoms result from a conflict with the USB
External Box. If your symptoms match one of those listed below,
proceed to the suggested section:
Configuring the
Software
•
Hardware failure error in the toolbar. See “System Errors”
(p. 7-1) for possible solutions.
•
If the BeamMaster-USB software was working at one time and
has now stopped working, connect the USB External Box to
another USB port and see if that solves the problem. If the
problem persists, contact Coherent—refer to “Obtaining
Service” (p. 10-2) for contact information.
Before capturing data, configure the following settings in the software to insure a successful first run of the BeamMaster-USB.
From the System menu, select System Setup:
•
Enter the wavelength of the test source.
•
Choose an industry standard Clip level (13.5 or 50%).
•
You may increase the average if values vary more than
desired—refer to “Average” (p. 4-63) for more information.
2-9
BeamMaster-USB User Manual
•
Using Run mode captures continuously and is best for general
operation. Using Step mode captures only one measurement
data when a user clicks a button.
There is no longer a configuration for “High Resolution”
measurement for beams < 100 µm, as was previously required
with the PCI version of BeamMaster. Measurements for all
beam sizes are performed in high resolution mode with the
BeamMaster-USB.
2 - 10
Operation
SECTION THREE: OPERATION
In this section:
•
Title bar (this page)
•
Menu bar (p. 3-2)
•
Tool bar (p. 3-2)
•
Window area (p. 3-3)
•
Status bar (p. 3-4)
•
Keyboard operation (p. 3-5)
•
Methods of data entry (p. 3-7)
When the BeamMaster-USB application is started, the main BeamMaster-USB window appears. The BeamMaster-USB window
consists of display and control elements similar to most Windows
applications, along with elements specific to the BeamMaster-USB
interface.
The main elements of the BeamMaster-USB window interface are
shown in the following figure:
Figure 3-1. BeamMaster-USB Window Interface—Main Elements
Title Bar
The Title Bar displays the name, “BeamMaster-USB,” followed by
the detector head type and serial number. The Windows operating
system provides special controls in the title bar of a window. From
the title bar, the main window can be closed, moved, sized, minimized to icon form, or maximized to fill the screen. For more information on these controls see the Windows manual or find the
Windows Tour program.
3-1
BeamMaster-USB User Manual
Menu Bar
The Menu Bar lists menus available for the BeamMaster-USB software. The menus listed in the Menu Bar contain items that allow
specific actions to be performed. Sub-menus or dialog boxes may
result from a menu item selection. These secondary items provide
various controls of such functions as graphics, analysis, configuration setup, etc.
Selecting a Menu
There are three ways to select a menu:
Tool Bar
1.
Press ALT and then the arrow keys, then Enter.
2.
Hold down the ALT key and press the underlined letter (hot
key) in the desired menu item.
3.
Press a shortcut key combination. Shortcuts are available for
some menu items and are displayed next to the menu item.
The tool bar is a collection of shortcut buttons to menu items that are
frequently used. Each shortcut is represented with a special icon
(picture) called a tool button.
To activate a tool button, place the mouse over the button and
click the LEFT mouse button. The button will change both color and
shadow to designate the function is active. To view the function of
any icon button, place the cursor on the icon and wait momentarily—a brief function description will appear near the icon.
Tool Bar Buttons
The following buttons are available on the tool bar:
Figure 3-2. Tool Bar Buttons
Inactive Tool
Buttons
If a tool is not available, it will be displayed in a gray outline form.
The Log button requires setup information to be available. The Step
button will not be available unless the system is set in Step Mode.
Start Log (disabled)
Step (disabled - so system is in RUN mode)
3-2
Operation
Toggle Tool
Buttons
The toggle group of tool buttons will turn display windows ON and
OFF. These tool buttons act as a toggle switch. When the corresponding window is active, the button will appear to be pushed
down. When the corresponding window is not active, the button
appears in the UP position.
W profile ON
W profile OFF
Hide the Tool Bar
See “Tool Bar Command” (p. 3-3).
System Errors
System errors are displayed in the data and time location, when
necessary. See “System Errors” (p. 7-1) for more information.
Date and Time
The current date and time are presented on the right side of the tool
bar. System errors are also displayed in the date and time location,
when necessary. See “Status Bar Panels” (p. 3-4).
Tool Bar
Command
The tool bar can be hidden or shown by selecting Tool Bar from the
View menu, or using the Shift + Insert keyboard shortcut.
This option enables the user to toggle between Show Tool Bar and
Hide Tool Bar.
When the Tool Bar is selected (Activated), there is an additional line
on top of the window containing Tools (picture shortcuts to some of
the most commonly used system functions), along with date/time
information.
When this option is not selected, the Tool Bar line disappears. In this
case the user has to activate the various system functions from the
menu or via keyboard shortcuts.
Window Area
The Window Area is utilized for the graphical display windows. The
BeamMaster-USB windows can be arranged in any configuration.
The Windows can show beam profiles, position diagrams, 2D and
3D contours, charts, and a power meter. Interactive mouse control of
each window allows a variety of customized configurations.
3-3
BeamMaster-USB User Manual
Arranging
Windows
Several special commands for arranging windows can be found
under the Windows menu. See “Windows Menu” (p. 4-69).
Status Bar
The Status Bar is located at the bottom of the BeamMaster-USB
window. It indicates the current status of key system measurement,
configuration, and operational parameters.
If the BeamMaster-USB system is not operating as intended, the
Status Bar provides a quick summary of why it is not functioning
properly; for example, the laser being used may have a different
wavelength. The Status Bar is a valuable aid in diagnosing unexpected results and can quickly help you get back to desired operation.
Figure 3-3. Status Bar
The Status Bar also provides quick access to System setup
parameters. Click the current Wavelength value to access
System setup. Toggle between Run/Step modes by clicking the
current mode on the Status Bar.
Status Bar Panels
Date & Time—The current date and time are presented on the right
side of the Tool Bar. This information is shown in American Standard format.
Wavelength—This panel will display
length—refer to “Wavelength” (p. 4-62).
the
current
wave-
System Clip Level—The clip level displayed on the Status Bar
corresponds to the System Clip Level. The System Clip Level is
utilized to calculate beam diameter on the Chart window, etc. See
“Clip Level” (p. 4-63).
Average—The displayed Average value corresponds to the number
of samples averaged before calculation and display—see “Average”
(p. 4-63).
Head Tilt—The Head Tilt value corresponds to the user-entered
value for the current detector head azimuth rotation—see “Head
Tilt” (p. 4-64).
3-4
Operation
Run/Step—The Run/Step display indicates the current mode of data
collection. If the screen does not appear to update, verify that the
system is not set to Step Mode—see “Mode” (p. 4-64).
Filter—The current Filter selection is indicated. See “Create Filter
File” (p. 4-2).
Power—The Power reading display is indicated. See “Power Setup”
(p. 4-26).
To hide or show the Status bar, read the information under
“View Status Bar,” next.
View Status Bar
The Status Bar can be hidden or displayed by selecting Status Bar
from the View menu or using the Ctrl+Insert keyboard shortcut.
This option enables the user to toggle between Show Status Bar and
Hide Status Bar.
When Status Bar is activated, there is an additional line appearing at
the bottom of the window. This line contains panels displaying
general system information and user settings.
Keyboard
Operation
The keyboard can be used to enter text data or control most
BeamMaster-USB functions utilizing keyboard shortcuts.
Help
Press the F1 keyboard key to obtain Help on the active window.
Selecting a Menu
Item
Use one of the following methods to select a menu item:
Closing a Menu
•
Press ALT and then the arrow keys and then Enter to select a
menu item.
•
Hold down the ALT key and press the underlined letter (hot
key) in the desired menu item.
•
Press a shortcut key combination. Shortcuts are available for
some menu items and are displayed next to the menu item.
To close a menu, press the ESC key.
3-5
BeamMaster-USB User Manual
Dialog Boxes
Text Entry
Select the text box you wish to change. Use the keyboard to enter the
desired text. When the correct text has been entered, press the TAB
key to finish data entry and move to the next control in the dialog
box. If an error is made while typing text, pressing the
BACKSPACE key will remove the character to the left of the text
cursor and move the cursor to the erased location. See also “Value
Entry Box” (p. 3-8) for changing spin buttons.
ESC Key
This key is used to select the Cancel button in a dialog box. This
function resets settings to their previous values before the dialog box
was opened.
ENTER Key
This key is used to select the OK button in a dialog box.
TAB Key
This key moves the input focus to the next control in a dialog box.
The following table summarizes all the software shortcuts and
control keys:
Table 3-1. Software Shortcuts and Control Keys (Sheet 1 of 2)
Command
Description
Shortcut
Load Configuration File
Displays Open dialog to load a (*.ini) configuration file
Ctrl+O
Save Configuration File
Displays Save dialog to save a (*.ini) configuration file
Ctrl+S
View File
Displays Open dialog to view a log file
Ctrl+V
Create Filter File
Starts the Create Filter File process
Ctrl+A
Print Text File
Displays an Open dialog to load and print any saved BeamMaster-USB file in text format
Ctrl+P
Print BMP File
Displays an Open dialog to load and print any saved BeamMaster-USB file in .bmp or .jpg format
Ctrl+B
Setup Data Collection
Displays the Data Collection Setup dialog
Start Data Collection
Starts the Data Collection process
Print Screen
Prints the entire screen
Exit
Exits the BeamMaster-USB software
Ctrl+X
Add Detector Head
Add Detector Head dialog
Ctrl+D
Start Link
Starts the RS-232 Link communication
Ctrl+K
Slave Mode
Activates the Slave Communication mode
Ctrl+M
Help Active Window
Displays Help information on current active window
F1
View Power
Displays Power window
F2
Ctrl+F12
3-6
Icon
Operation
Table 3-1. Software Shortcuts and Control Keys (Sheet 2 of 2)
Command
Description
Shortcut
Profile V
Displays Profile V window
F3
Profile W
Displays Profile W window
F4
Plot
Displays the Power Plot window
F7
Step
Increments the Step display if the system is in Step mode
F9
Test
Opens the Test window
Print Window
Prints the current active window
F12
ToolBar
Toggles the Tool Bar on and off
Shift+Insert
Status Bar
Toggles the Status Bar on and off
Ctrl+Insert
Close All Windows
Closes all active windows
Ctrl+W
About
Displays the BeamMaster-USB About dialog
Shift+F1
Search For Help For
Activates the BeamMaster-USB Help search function
Ctrl+F1
Icon
Methods of Data
Entry
Check Box
Use the following selection method to turn an option ON:
A check box is utilized in cases when there is a need to toggle a
parameter ON or OFF. When the parameter is active, a check mark
() is displayed inside the option box.
Place the mouse cursor at the option box and click the LEFT
mouse button. Click the LEFT mouse button again to deactivate the
selection. The check mark is than removed from inside the box.
Highlight the required parameter box by pressing the TAB
key. Press the SPACEBAR to toggle the Check Box parameter.
3-7
BeamMaster-USB User Manual
Radio Button
Use this typical radio button entry to select a value from a short list
of options:
Move the mouse cursor and place it at the required option.
Click the LEFT mouse button once to select the option.
Move the cursor to the required option—either by moving the
mouse or by pressing the TAB key—until the cursor is within the
option list zone. Press the arrow keys to select the option from the
list.
Value Entry Box
Use the Value Entry Box to set a digital value parameter:
Place the mouse cursor at either the Up or Down arrow
buttons displayed to the right of this box, and then click the LEFT
mouse button to change values for the selected parameter.
Move the cursor to the required data box either by moving the
mouse or by pressing the TAB key. Type the desired value. The
ENTER key may change the value to meet the system requirements.
3-8
Operation
Color
The Color option enables the user to set the background color, data
color, and plot color for the various windows. Select the desired
color from the standard Windows color pallet. Custom colors are
also available with the appropriate video card and Windows color
setting.
The Position, Profile W, and Profile V windows allow the selection
background, data, and plot color. The Power and Projection
windows allow for the selection of background and data color. Plot
and Chart windows allow for the selection of background and plot
colors.
Selecting a Color
Place the mouse cursor over the desired Color Box and click
the LEFT mouse button once. Press and hold the Preview button to
view the selected colors without accepting the settings and exiting
the dialog.
3-9
BeamMaster-USB User Manual
3 - 10
Menus and Commands
SECTION FOUR: MENUS AND COMMANDS
In this section:
•
File menu (this page)
•
View menu (p. 4-22)
•
Options menu (p. 4-53)
•
System menu (p. 4-61)
•
Window menu (p. 4-69)
•
Help menu (p. 4-70)
The following Command menus are available on the BeamMaster-USB Menu Bar:
File Menu
The File menu allows the user to perform many file operations.
The following commands and menu items are available from the
File menu:
4-1
BeamMaster-USB User Manual
View File
This option provides the user with the ability to view any stored file,
including: Data Log, Power Plot, Width/Position strip chart, Test,
Profile Snapshots, and .ini files.
To access this option:
1.
Select the View File menu item from the File menu. Alternatively, press the CTRL + V keys or click the
button on the
Tool Bar. A standard Windows file dialog will display.
2.
Select the “File Type” for the file to be viewed.
The dialog will default to the BeamMaster-USB directory where the
files are typically located.
Create Filter File
3.
Click on a file from the list on the left.
4.
Click OK. The file can now be displayed in the Notepad application.
This option enables the user to define a new optic filter file (Filter).
To access this option:
Select the Create Filter File from the File menu or press the
CTRL + A keys.
Because silicon detectors saturate easily, it is frequently necessary to
insert one or more filters in front of the detector to attenuate the
beam and prevent saturation. The wavelength response of these
filters is not flat, so it is necessary to install the transmission properties of the Filter in the software to obtain proper power measurement
and gain setting for the detector amplifier.
4-2
Menus and Commands
Filter File Contents
The Filter file contains a table with two columns. The first column
is the wavelength (in 1 nm, or larger, steps). The second column is
the known transmission of the filter for the corresponding wavelength. The BeamMaster-USB software uses straight-line interpolation to determine transmission values for wavelengths that lie
between wavelengths listed in the file.
Absolute Power Calibration
A filter file can be created to provide power calibration. First
measure the power of the beam with a calibrated power meter. Then
measure the reported power with the BeamMaster-USB Power
Window—see “Power” (p. 4-22)—with the Filter option OFF—see
“Filter” (p. 4-23). Now perform the following calculation and use
the % transmission value obtained when creating the filter file.
% Transmission Value = (Real Power / BM Power) * 100
Creating a New Filter File
1.
Select Create Filter File from the File menu (or press the
CTRL + A keys).
2.
There are 3 Value Entry boxes: line number, wavelength (nm),
and transmission value (%). The data box labeled “Number”
starts with the line number value “1”.
3.
Type a value for wavelength, or change it by using the arrow
keys in this data box. If a wavelength outside the operating
range of the detector head is entered, a warning will be
displayed.
4.
Type the percent transmission, or change it by using the arrow
keys in this data box.
5.
Press the Add button to insert the next data line into the Filter
file. The data box labeled as “Number” will display the value
4-3
BeamMaster-USB User Manual
of “2.” Go back and repeat steps 3, 4, and 5 until all the desired
wavelength/transmission points have been entered.
Print
6.
Press the arrow keys in the data box labeled “Number” to navigate the entered points of the new filter file. You can use the
Remove button to delete a current point in the filter file or the
Remove All button to delete all points.
7.
Press the Complete button when you are done with the Filter
creating procedure. BeamMaster-USB will then display a file
storage dialog. Press the Cancel button to cancel attenuation
data file creation.
8.
In the file dialog there is no need to change the “File Type”
because FLT is the default.
9.
The BeamMaster-USB data files are located in the “Data”
folder in the BeamMaster-USB directory. By default, the
BeamMaster-USB directory is located in “Program Files.”
10.
Type a filename for the filter file in the box below the word
“File name”. There is no need to have the file name end in .FLT
because the program will automatically save the file with a
.FLT extension.
11.
Click the Ok button.
Print allows the user to print an entire saved data file. Saved data
files include a pre-saved text file or a pre-saved image file.
Printing a Text File
1.
Select the Print menu item from the File menu, press the
CTRL + T keys, or click the
2.
Select the Text File menu item.
4-4
tool bar button.
Menus and Commands
3.
Select the “File Type” for the file to be printed.
The BeamMaster-USB data files are located in the “Data” folder in
the BeamMaster-USB directory. The BeamMaster-USB directory is
located in “Program Files” by default.
4.
Click on the desired file from the file list on the left.
5.
Click the OK button. A standard print setup dialog is
displayed.
6.
Select the printing variables and then click the OK button.
Printing an Image File
1.
Select the Print menu item from the File menu, press the
CTRL + I keys, or click the
2.
tool bar button.
Select the Image File menu item.
4-5
BeamMaster-USB User Manual
Print Window
3.
Select the “File Type” for the file to be printed.
4.
Click on a file from the file list.
5.
Click the OK button. A standard print setup dialog is
displayed.
6.
Select the printing variables and then click the OK button.
Print Window enables an immediate printing of the active window.
The colored title bar indicates the current active window.
Printing an Active Window
1.
Select Print Window from the File menu, or press the F12
keyboard shortcut to display a standard print dialog screen.
2.
Select the printing variables and then click the OK button.
4-6
Menus and Commands
A message box “Printing...” is displayed when the window graphics
is being transferred from the program to the printer via the Windows
Print Manager.
The time required for printing graphic screens in a Windows
environment is dependent on the computer resources.
Print Screen
Print Screen enables an immediate printing of the current full screen
display.
Printing a Screen
1.
Select Print Screen from the File menu, or press the
CTRL + F12 keyboard shortcut to display a standard print
dialog screen.
2.
Select the printing variables and then click the OK button.
4-7
BeamMaster-USB User Manual
A message box “Printing...” is displayed when the window graphics
is being transferred from the program to the printer via the Windows
Print Manager.
The time required for printing graphic screens in a Windows
environment is dependent on the computer resources (speed and
memory), on the printer’s internal memory and speed, and on
the number and type of other Window application programs
running at the time printing is initiated.
Page Setup
This option enables the user to set the orientation and paper size, and
to load the appropriate driver from the standard Page Setup window.
Setting up a Page
1.
Select Page Setup from the File menu to display the Page
Setup dialog screen:
2.
Change the necessary parameters on the screen and then click
the OK button.
4-8
Menus and Commands
Start/Stop Log
This option enables the user to start or stop a log data file.
Starting/Stopping a Log Data File
•
To start a log operation, select Start Log from the File menu or
click the
•
button on the Tool Bar.
To stop a log operation, select Stop Log from the File menu or
click the
button on the Tool Bar.
Start Log is disabled until the following parameters are configured
in the Log Setup (refer to Log Setup, below, for more information):
•
The duration of the experiment
•
The rate of data logging
•
The Log filename
When the data saving process is active, a log banner is displayed on
the top corner of the Tool Bar area.
During data collection, the Start Log menu item and tool bar icon
change to Stop Log.
Log Setup
This setup window allows the user to customize the log operation.
Customizing the Log Operation
1.
Select Log Setup from the File menu or click the
button to display the Log Setup screen:
tool bar
File Tab
•
Log Type: Select the desired file type: Log file or Excel file.
The Log file is saved in a standard text format. The Excel file
is saved as an Excel Workbook.
4-9
BeamMaster-USB User Manual
•
File name: Click the Browse button to assign a file name and
location for the data file.
Note: When LOG file type is selected, all data collected will be
saved with the file extension *.log. The .log extension designates the
data as a text file and can be imported into other programs. When the
Excel file type is selected, data will be saved as a file name *.xls or
*.xlsx, depending on the version of Microsoft Excel being used.
When the HTML file type is selected, data will be saved in two files
with *.xml and *.htm extensions for viewing in an Internet browser.
Settings Tab
•
Log Mode: This mode selection determines the method of data
collection. The Time mode selection allows data collection at
a rate resulting from the interval and duration settings. The
Points mode sets data collection according to the specified
number of points. The Manual mode enables saving one single
measurement by pressing the Space Bar button.
•
Interval: The time interval determines the time between
consecutive data points.
•
Duration: The total amount of time required to complete the
data collection.
Data Tab
•
Data: Allows you to select the data that will be stored in a log
file.
4 - 10
Menus and Commands
When the desired setup parameters are selected, click the OK button.
The data collection process (Log file) is initiated by selecting the
Start Log menu item—refer to “Start/Stop Log” (p. 4-9).
The end of each Log file contains a statistics summary, which
includes: Minimum value, Maximum value, Mean value, and Standard deviation value for each parameter saved.
Log Setup is disabled while Log is in progress.
Press OK to confirm the selection or CANCEL to restore previous
settings.
Start Link
The Start Link command provides the capability to operate an
RS-232 communication channel for serial data transmission. Any
displayed data or a pre-saved file can be transmitted when using
Start Link. Typically this feature is used to transfer real time data
from the BeamMaster-USB system to another computer over a
null-modem serial cable. The other computer can receive the data
using a program that can communicate over a COM port, like the
Windows HyperTerminal program.
Transmitting a File Over RS-232
1.
Connect the BeamMaster-USB system to another computer
using a null-modem cable—see “Making a Null-Modem
Cable” (p. 4-12).
2.
Before using Start Link, set the Link parameters in Link Setup.
Each link parameter must be configured to match the communications protocol of both computers receiving data.
3.
Enable the receiving program to receive the data.
4.
Select Start Link from the System menu. A standard Windows
File box is displayed.
5.
Select the “File Type” for the file that will be sent. There
should be no need to change the directory because most files
should be stored in the default BeamMaster-USB directory.
4 - 11
BeamMaster-USB User Manual
6.
Click on a file from the file list on the left.
7.
Click OK. A link status window will be displayed in the upper
left-hand corner of the Window area.
The file is transmitted in the Background while BeamMaster-USB
continues to capture data. When finished, the Linking status
message will disappear. To stop a Link in progress, select Stop Link
from the System menu.
Making a
Null-Modem Cable
A null-modem cable can be made from a standard RS-232 cable by
connecting the pins on one end of the cable to the pins on the other
end, as shown in the following figures.
Figure 4-1. Null-Modem with 25 Pins on Both Sides
Figure 4-2. Null-Modem with 9 Pins on One Side and 25 Pins on the Other Side
4 - 12
Menus and Commands
Figure 4-3. Null-Modem with 9 Pins on Both Sides
Link Setup
Link Setup allows the user to configure the system for a particular
set of parameters needed for the RS-232 or TCP/IP transmission.
The default values are typical for this kind of transmission and are
show below.
General Tab
•
Connect using: The COM port setting selects the port utilized
for RS-232 transmission from the BeamMaster-USB-based
computer.
4 - 13
BeamMaster-USB User Manual
Transmit: The Transmit radio button selection toggles the transmission type between transmit a file and real-time data.
Port Settings Tab
Use the settings on this tab to set RS-232 serial parameters.
•
Bits per second: This selection determines the transmission
rate (baud rate) of the data transmission. See “Bits per second”
(p. 4-16).
•
Data bits: The Data Bits selection determines the number of
data bits utilized for transmission. See “Data Bit” (p. 4-17).
•
Parity Bits: This selection determines the parity bit utilized
for robust serial communication. See “Parity Bit” (p. 4-18).
•
Stop bits: This selection determines the number of stop bits
utilized for transmission. See “Stop Bit” (p. 4-19).
•
Handshake: Specifies the control protocol used in establishing a serial port communication. See “Handshake”
(p. 4-20).
Press OK to confirm the selection or CANCEL to restore previous
settings.
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Menus and Commands
Port
The Port selection option is accessed from Link Setup—refer to
“Link Setup” (p. 4-13).
The Port setting is utilized to set the computer communication
(COM) port for RS-232 data transmission or to choose TCP/IP
transmit data method. This setting should only be changed when
utilizing the RS-232 or TCP/IP communication link.
Transmit
The Transmit option is accessed from Link Setup—refer to “Link
Setup” (p. 4-13). This setting should only be changed when utilizing
the RS-232 or TCP/IP communication link.
The possible values for Link transmission port are: File and Data.
Selection is made with radio buttons—see “Radio Button” (p. 3-8).
The Transmit setting is selected for either on-line transmission of
live data, or transmission of a pre-saved text file. When data is
selected, the system will send the following data, depending on the
active window:
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BeamMaster-USB User Manual
$ Time (x.x), Power (x.xxx), PositionX (x.x), PositionY (x.x),
WidthV (x.x), WidthW (x.x), WaveValue, ClipLevel, Average,
FilterName, SystemNumber
For example:
$ 2.4 0.375 230.5 400.1 1234.4 2345.5 633 13.5 4 NG4.FLT BM715
Note: To stop a link in progress, select Stop Link from the System
menu.
Bits per second
This setting is accessed from Link Setup—refer to “Link Setup”
(p. 4-13). This setting should only be changed when utilizing the
RS-232 communication link.
Bits per second refers the transmission rate for the RS-232 link. The
possible values are: 110, 300, 600, 1200, 2400, 4800, 9600, 19200,
38400, 57600, and 115200.
This setting must match the corresponding setting on the receiving
computer.
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Menus and Commands
Data Bit
The RS-232 data bit selection is accessed from Link Setup—refer to
“Link Setup” (p. 4-13). This setting should only be changed when
utilizing the RS-232 communication link.
This setting determines the number of bits utilized for RS-232 transmission. The possible values are: 4, 5, 6, 7, and 8.
This setting must match the corresponding setting on the receiving
computer.
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BeamMaster-USB User Manual
Parity Bit
The Parity Bit option is accessed from Link Setup—refer to “Link
Setup” (p. 4-13). This setting should only be changed when utilizing
the RS-232 communication link.
This setting determines whether or not a parity bit is to be transmitted. The possible values are: None, Odd, Even, Space, and Mark.
This value must match the corresponding setting on the receiving
computer.
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Menus and Commands
Stop Bit
The Stop Bit option is accessed from Link Setup—refer to “Link
Setup” (p. 4-13). This setting should only be changed when utilizing
the RS-232 communication link.
This setting determines the number of stop bits to be transmitted.
The possible values are: One, Two, or OnePointFive.
This value must match the corresponding setting on the receiving
computer.
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BeamMaster-USB User Manual
Handshake
The Handshake option is accessed from Link Setup—refer to “Link
Setup” (p. 4-13). This setting should only be changed when utilizing
the RS-232 communication link.
This setting must match the corresponding setting on the receiving
computer.
•
None: No control is used for the handshake.
•
XOnXOff: The XON/XOFF software control protocol is used.
The XOFF control is sent to stop the transmission of data. The
XON control is sent to resume the transmission. These software controls are used instead of Request to Send (RTS) and
Clear to Send (CTS) hardware controls.
•
RequestToSend: Request-to-Send (RTS) hardware flow
control is used. RTS signals that data is available for transmission. If the input buffer becomes full, the RTS line will be set
to false. The RTS line will be set to true when more room
becomes available in the input buffer.
•
RequestToSendXOnXOff: Both the Request-to-Send (RTS)
hardware control and the XON/XOFF software controls are
used. Specifies the control protocol used in establishing a
serial port communication.
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Menus and Commands
Slave Mode
After selecting the Link Setup parameters, the user can activate the
Slave Mode option from the File Menu. The keyboard shortcut for
Slave Mode is CTRL + M.
Transmit parameter should be selected as Data.
After selecting the Slave Mode option, a status label will be
displayed in the upper right-hand corner of the Tool Bar area.
To receive transmitted data at the master computer, either press the
d key on the keyboard, or send the BeamMaster-USB program an
ASCII code for d.
To terminate Slave Mode, unselect this option in File Menu (terminate the Slave Mode from the BeamMaster-USB program). The user
can terminate the Slave Mode from the master computer by either
pressing the s button, or sending ASCII code to the slave computer.
The receiving program at the master computer is not provided with
the BeamMaster-USB product. It should be written according to the
user's application needs.
Exit
The Exit function is selected from the File menu—refer to “File
Menu” (p. 4-1). The keyboard shortcut is CTRL + X.
Use this option to terminal the BeamMaster-USB application.
The following dialog is shown when you exit the program and Save
Settings on Exit is not enabled—refer to “Options Menu” (p. 4-53)
for information about the Save Settings on Exit option. It is a
reminder to save the current setup parameters.
Select Yes to exit and save current user settings.
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BeamMaster-USB User Manual
View Menu
The View menu operates the functional windows. The following
commands and menu items are available from this menu:
The corresponding keyboard shortcuts are shown to the left of the
item. These shortcuts may be activated from the Main window by
pressing the appropriate keyboard combination.
A check mark in front of a menu item indicates that the function is
active.
A gray menu item indicates that item is unavailable. Conditions or
Setup parameters may be required for the item to be active. Review
other text in this manual text or help associated with the gray item
for additional setup information.
Power
The Power window can be turned ON or OFF by choosing Power
from the View menu, pressing the F2 keyboard shortcut, or clicking
the
tool bar button.
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Menus and Commands
The Power selection activates the power meter display window. The
display shows real-time power as a needle graph or a digital value.
Several buttons provide easy and quick control of the Power functionality.
Placing the mouse cursor over the Power display and pressing the
left-hand mouse button twice changes the Position window to a
graphical presentation, only without the measurement data display
on the right-hand side of the window.
The power units can be selected by clicking on the units displayed
in the Power window. Each mouse click will cycle to the next unit
(µW, mW, and dBm).
Power Buttons
Filter: The Offset button will load or unload a pre-defined transmission file into the power calculation.
Null: The Null button will activate or deactivate the ambient-light
suppression.
Setup: The Setup button will display the Power Setup dialog
containing various power related settings.
To get help on this window, press the F1 key when Window is
active. The Active window is the window with the highlighted
title bar.
Filter
The Filter button is accessed from the Power window.
This button is not available when BeamMaster-USB is used with
the InGaAs detector head.
Because silicon detectors can saturate very easily, it is frequently
necessary to insert a filter in front of the detector. The filter will
attenuate the beam and prevent saturation. Since the wavelength
response of the filter is not flat, it is necessary to install the transmission properties of the filter in the software to obtain a proper power
measurement. The proper gain settings for the detector amplifier are
also determined by the actual sensor output. the filter option allows
the user to load or remove any pre-defined filter transmission file to
be utilized by the power measurement function.
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BeamMaster-USB User Manual
Choosing a Filter File
The silicon detector heads come with two pre-defined filter files
(NG4 and NG9). For more information—refer to “Selecting a Filter”
(p. 2-3). A custom filter file can be created through the Create Filter
File command in the File menu. This is helpful if you want to calibrate the BeamMaster-USB system for accurate power measurement
relative to a known instrument at a specified wavelength.
Selecting the Filter File
To inform BeamMaster-USB which filter is installed in the detector
head, click on the Load button in the Power Setup dialog. A file list
is displayed, presenting all the available filter files. Select the
desired filter file and confirm with the OK button.
Using the Filter
Null
1.
Physically install the selected filter into the BeamMaster-USB
head—see “Care and Handling” (p. 2-2).
2.
Click the Filter button on the power meter panel display to
activate the selected filter file. The power measuring function
will calculate power utilizing the selected filter file. A banner
containing the selected filter file name will appear in the power
display.
3.
Click the Filter button on the power meter panel display again
to deactivate the selected filter.
4.
Physically remove the filter from the detector head.
The Null button is accessed directly from the Power window.
This button provides for ambient-light suppression to permit accurate analysis of the light source. When Null is not active, the value
displayed in the Power window is the total power incident on the
detector surface. When Null is active, the value displayed in the
Power window is the power of the input only.
To activate or deactivate Null, place the mouse cursor over
the Null button and click the LEFT mouse button.
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Menus and Commands
Suppressing Ambient Light
When activating Null, a message box appears, instructing the user to
remove the light source and press OK.
The system now measures the ambient light level. Clicking the OK
button will cause the software to subtract the measured level from
the subsequent measurements.
The final prompt will indicate when the measurement has taken
place and the laser can be turned on again. The OK button will activate the Null.
An “Null” banner appears in the power display with the calculated
value of ambient light displayed underneath.
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BeamMaster-USB User Manual
Power Setup
Power Setup is selected from the Setup button in the Power window.
Power Setup allows the user to configure the power measurement
capability of the Power window.
•
Units: Select the appropriate units (mW, µW or dBm) for the
power meter display.
•
Filter: The Load Filter button displays a Windows open dialog
that allows the user to select the .FLT file corresponding to the
installed filter.
•
Display: The Display radio buttons allow the user to select the
desired presentation.
•
Status Power: Toggles between displaying the power reading
on the Status Bar and disabling the power reading display.
•
Range: The Power Range selection allows the user to specify
the display range. Select the values appropriate to the current
laser power.
•
Alarm Limits: The On/Off box must be checked to access the
Alarm Limit values. Set the desired values for visual alarm
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Menus and Commands
indicators in the Power Window. A Computer beep will also be
active if the Sound box is checked.
•
Colors: The Colors tab allows the user to specify background
and foreground colors for the Power window. A standard
Windows color pallet is available.
Upon selecting the required parameter value, press the OK button to
confirm the selection, press Cancel to restore the previous settings,
or press System to reach the System Setup.
Units
The Units are selected from the Power Setup dialog.
The Units option enables changing the units on the power meter
display. The possible values are: mW, µW, and dBm.
Both the needle scale and the numerical power display are updated.
Set the desired power units with the radio button—see “Radio
Button” (p. 3-8). The units can also be selected by clicking on the
units displayed in the Power window. Each mouse click will cycle to
the next unit (µW, mW, and dBm).
Display
Select the Display option from the Power Setup dialog.
This option provides three types of presentations for the power
meter:
1.
A graphical needle graph and a small digital presentation of the
measured power.
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BeamMaster-USB User Manual
2.
A large digital presentation for better visibility at a distance.
3.
A bar graph presentation of the measured power.
For the appropriate display, check the radio button—see “Radio
Button” (p. 3-8).
Range
Select the Power Range from the Power Setup window.
The Power Range magnifies the beam power display. The needle
graph display is affected accordingly.
This is a useful feature when monitoring small changes in beam
power.
Define the Zoom area by setting the minimum and maximum power
levels from Min or Max box utilizing the Value Entry Box.
Colors
The color option enables the user to set the background color, data
color, and plot color for the various windows. Select the desired
color from the standard Windows color pallet. Custom colors are
also available with the appropriate video card and Windows color
setting.
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Menus and Commands
The Position, Profile W and Profile V windows allow the selection
of background, data, and plot colors. The Power and Projection
windows allow for the selection of background and data colors. Plot
and Chart windows allow for the selection of background and plot
colors.
To select a color: Place the mouse over the desired color box and
click the LEFT button once. Press and hold the Preview button to
view the selected colors without accepting the settings and exiting
the dialog.
Alarm Limits
The Alarm Limits are selected from the Power Setup dialog.
The limits are defined by the area within the needle graph display.
Audible and visual indicators will warn the user if the power drifts
outside the user-specified zone. The allowed zones are marked in
black, while non- permitted operation zones are marked in red on the
needle graph. When the On/Off box is checked, visual indicators are
provided when the user-specified limits have been exceeded. The
Sound box provides additional audio beeps when the specified limits
have been exceeded.
Alarm Limits Options
•
On: Set Alarm Limits ON or OFF using the Check Box.
•
Sound On: The Sound option is used for generating an audible
warning in case the measured power exceeds the preset Alarm
Limits levels.
•
Min: The Min option is used for setting the minimum range
value for Alarm Limits
•
Max: The Max option is used for setting the maximum range
value for Alarm Limits.
The minimum value set for Alarm Limits should be bigger than,
or equal to, the minimum value set for Range. The maximum
value set for Alarm Limits should be smaller than, or equal to,
the maximum value set for Range.
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BeamMaster-USB User Manual
Sound On
Select Sound On from the Power Setup dialog.
Use this option to enable an audible warning when power drifts
outside the pre-set Max and Min alarm limits. Toggle between
Sound On and Sound Off using the Check Box.
Min
Select Min in the Power Setup dialog. The min setting is displayed
in the “Range and Limits” tab.
The minimum setting corresponds to a user-selected minimum
power level. The Min setting in the Range dialog section will set the
minimum value displayed on the power scale. The Min setting in the
Alarm Limits dialog section will be displayed on the Power
Window.
When the Alarm is active and the appropriate Min/Max levels
are set, the user will be notified when these limits are exceeded.
Max
Select Max in the Power Setup dialog. The max setting is displayed
in the “Range and Limits” tab.
The maximum setting corresponds to a user-selected maximum
power level. The Max setting in the Range dialog section will set the
maximum value displayed on the power scale. The Max setting in
the Alarm Limits dialog section will be displayed on the Power
Window.
When the Alarm is active and the appropriate Min/Max levels
are set, the user will be notified when these limits are exceeded.
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Menus and Commands
Profile V
The Profile V window can be turned ON and OFF by choosing the
Profile V menu item from the View Menu, pressing the F3 key, or
clicking the
tool bar button.
The Profile Window graphically displays details of the beam's intensity profile along the V axis. In addition to the profile information,
there is a display of beam width at three different clip levels. The clip
levels (80%, 50%, and 13.5%) may be changed using the Setup
button.
•
Placing the mouse cursor over the Profile display and pressing
the left-hand mouse button twice changes the position window
to a graphical presentation without the measurement data
display.
•
Placing the mouse cursor over the Profile display and pressing
the left-hand mouse button twice changes the modified position window back to its original size and shape.
Profile Buttons
•
Gaussian: The Gaussian selection compares the displayed
profile to an ideal Gaussian in real time.
•
Zoom: The Zoom function increases or reduces the displayed
X-Axis range (spatial resolution). The profile peak will remain
centered on the display when the Zoom is changed.
•
Setup: The Setup selection provides access to the profile
settings including: background color, grid lines, auto-scaling
of the profile peak, and Supplementary clip level adjustment.
To get help on this window, press the F1 key when the Window
is active. The Active window is designated with the highlighted
title bar.
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BeamMaster-USB User Manual
Gaussian
Select the Gaussian button from the Profile window or via the check
box in Profile Setup.
This function determines how closely the measured beam profile
matches a theoretical Gaussian profile. When the Gaussian button is
activated, a Gaussian profile is overlaid on top of the current
measured profile in real time. The gaussian fit profile is in red.
The percent correlation and width comparisons utilize the
currently-selected clip levels. The comparison data is displayed
adjacent to the profile data. The comparison data includes data about
the ideal Gaussian profile beam width, as well as the deformation
from the ideal Gaussian beam.
To turn Gaussian Off, press the Gaussian button again.
Profile Zoom
Profile Zoom buttons are selected from the Profile windows.
This option allows the displayed X-axis range (spatial resolution)
Profile to zoom in or zoom out by a factor of two. The BeamMaster-USB software will maintain the display with the peak
centered on the window.
Each time the Up/Down arrow button is clicked, the profile
displayed area is increased or decreased by a factor of two.
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Menus and Commands
Profile Setup
Select the Profile Setup button from the Profile window.
Settings Tab
•
AutoScale: The AutoScale selection forces the profile to be
displayed utilizing the full height of the profile window.
•
Grid: The Grid selection displays a grid pattern behind the
profile. The grid is used to provide a visual point of reference
on the displayed profile.
•
Gaussian: The Gaussian selection will provide a pure
Gaussian reference overlay on the displayed profile. The
Gaussian selection also provides a numeral Gaussian reference
value.
•
Digital: The Digital selection will display the current measurement results as digital values only.
•
Clip Levels (%): This selection defines the clip levels for the
two supplementary beam width measurements.
•
Colors: The Colors tab allows the user to specify background,
foreground and profile colors for the Profile Window. A standard windows color pallet is available for color selection.
All settings work independently in both the W profile and the V
profile. AutoScale can be ON for one profile window and OFF in
the other profile window.
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BeamMaster-USB User Manual
Autoscale
Profile Autoscale is accessed by clicking the Profile Setup button in
the display windows.
This option enables the user to toggle between Autoscale On and
Autoscale Off.
Use the Check Box to turn Autoscale ON. When Autoscale is ON
the beam intensity profile is always normalized to fit 100% of the
display window.
Autoscale must be ON for the clip level bars to be visible.
When Autoscale is OFF, the beam intensity profile is not normalized
to 100% of the display window and the beam peak is observed as it
changes. The function is helpful during a focusing process. The peak
intensity changes may be observed as a function of the focus,
showing the variations in the beam’s peak with respect to the
changes in beam size.
This function affects only the graphical presentation on window.
Profile Grid
The Profile Grid is set from the Profile Setup dialog.
The Profile Grid option turns on the grid pattern displayed in the
profile window.
Use the check box to toggle the grid between ON and OFF.
Clip Levels
Clip Levels are selected from Profile Setup windows.
The three clip levels determine the levels at which the width of V
and W profiles are to be measured by the BeamMaster-USB system.
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Menus and Commands
A clip level defines the percentage of the peak intensity profile at
which the beam is measured. For example, a clip level of 50% indicates that the beam is to be measured at its full width at half
maximum (FWHM); whereas, a clip level of 13.5% measures the
beam at a point which is 13.5% of the profile peak. The 13.5% level
corresponds to the 1/e2 point of a Gaussian profile.
Both V and W profile windows simultaneously display the width of
the beam at three clip levels. If AutoScale is ON, the display
includes three clip levels represented by solid horizontal lines superimposed on the profile. The default setup of clip levels is 80%, 50%
and 13.5%.
Changing Clip Levels in the Profile Setup Window
The three clip levels are labeled I, II, and III. Change the clip level
value for each one of them by entering a new value in the Value
Entry Box. The clip levels may be set in 0.1% increments.
Changing Clip Levels in the Profile Window
Place the mouse cursor just above or below the width level bar to be
changed, then press the LEFT mouse button and drag it up or down,
while watching the change in Clip Level setting on the profile
presentation. The clip level can be moved vertically to a new clip
level in 0.3% increments. When performing this operation it is
helpful to size the Profile Window as large as possible.
Profile W
The Profile W window can be turned ON and OFF by choosing the
Profile W menu item from the View Menu, pressing the F4 key, or
clicking the
tool bar button.
The Profile Window graphically displays details of the beam’s intensity profile along the W axis. In addition to the profile information,
there is a display of beam width at three different clip levels.
Review the functions associated with the Profile V window for additional information.
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BeamMaster-USB User Manual
Position
The Position window can be turned ON and OFF by choosing the
Position menu item from the View Menu, pressing the F5 key, or
clicking the
tool bar button.
The Position function provides a real-time display of the beam
centroid position, as well as a beam foot print. This window can be
used to align the detector head with the incoming laser beam.
Settings can also be customized by clicking the Setup button.
In the main window area, the detecting area of the sensor is represented by a 9x9 mm square for the BM-7 Si Head, by a 5 mm diameter circle for the BM-3 Si version, and by a 3 mm diameter circle
for the BM-3 InGaAs version. Review the current head specifications for input aperture values not previously given.
The solid cross hair target that appears within the main display area
represents the local Earth reference frame. This reference display
remains fixed. The intersection of these two solid lines is the center
of the detector. The diagonal lines labeled V and W are the axes
along which the width and profile measurements are made and
displayed.
When a laser beam enters the aperture of the head, it is represented
as a dotted ellipse. If the beam is circularly symmetric, a dotted
circle will appear. This ellipse indicates the “footprint” of the beam
in the plane of the rotating knife-edges. The ellipse will change
shape and orientation as the beam expands and contracts in different
directions. A small cross indicates the location of the center of the
beam. The X and Y coordinates of this cross are shown in µm units
under the title “Centroid.” There is also a display box that contains
an estimate of the size of the major and minor axes of the ellipse, as
well as the angle of orientation (under the title: Ellipse Data).
Placing the mouse cursor over the Position display and pressing the
left-hand mouse button twice changes the position window to a
graphical presentation without the measurement data display on the
right-hand side of the window.
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Menus and Commands
Placing the mouse cursor over the Position display and pressing the
left-hand mouse button twice changes the modified position window
back to its original size and shape. Also, any attempt to resize the
Position screen retains the original size and shape.
These values are merely estimates and are less accurate than
width measurements made in the Profiles functions.
To get help on this window, press the F1 key when the Window
is active. The Active window is the window with the highlighted
title bar.
Position Setup
Select Position Setup from the Position window.
•
Zoom: The Zoom selection activates the zooming capability
of the position display. Small beams are enlarged and centered
on the plot.
•
Grid: The Grid selection enables a grid pattern on the position
display.
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BeamMaster-USB User Manual
Digital: The Digital selection displays the position data as a digital
display only.
•
Zoom: The Zoom selection activates the zooming capability
of the position display. Small beams are enlarged and centered
on the plot.
Position Zoom
The Position Zoom is adjusted from the Position Setup window.
The Position Zoom is used to view the footprint of small beams
more clearly. It is recommended that this option be activated for
beam widths of less than 300 microns. Once activated, the area
immediately surrounding the beam is magnified to show the footprint in the greatest possible detail. The size of this region is automatically scaled up or down as the beam changes size.
The “ZOOM ON” message is displayed inside the position screen
area.
Toggle between Zoom Position ON and Zoom Position OFF with
the check box.
Position Grid
The Position Grid is selected from the Position Setup window.
This option turns on the grid pattern that is displayed in the position
plot area.
Use the check box to turn the grid ON.
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Menus and Commands
Projection
•
The Projection window can be turned ON and OFF by
choosing the Projection menu item from the View menu,
pressing the F6 key, or by clicking the
button on the tool
bar.
The 3D image can be rotated along the vertical and horizontal axes
using the following routine:
1.
Place the mouse cursor over the 3D image.
2.
Hold the left mouse button down (note that the mouse cursor
shape has changed).
3.
Drag the mouse while pressing the left mouse button. You can
move the cursor up or down, as well as left or right. The image
will rotate accordingly.
Placing the mouse cursor over the Projection display and pressing
the left-hand mouse button twice changes the window to a graphical
presentation without the measurement data displayed on the
right-hand side of the window.
Placing the mouse cursor over the Projection display and pressing
the left-hand mouse button twice changes the modified position
window back to its original size and shape.
The Projection function provides either a two-dimensional view or a
three-dimensional view of the beam intensity profile.
The Projection Window has a Setup button for setting the parameters
associated with this presentation.
The Projection is created using a mathematical process called
“Reconstructive Tomography.” The displayed resolution is 32*32,
regardless of beam size. This same type of process is used by X-ray
systems to create X-ray images. More knife-edges will yield a
greater level of detail. For a beam distribution that is significantly
non-gaussian, the standard seven knife-edge system can reconstruct
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BeamMaster-USB User Manual
a plot that closely matches the real beam. When examining
near-gaussian beams, three knife-edges can give an accurate intensity distribution.
To get help on this window, press the F1 key when the window is
active. The active window is indicated with the highlighted title
bar.
Projection Setup
The Projection Setup button is selected from the Projection window.
•
Axes V/W: The Axes selection activates the axis orientation
symbol.
•
Grid: The Grid selection activates the 2D window grid.
•
Digital: This selection displays the measurement results as a
digital display only.
•
Dimension: The selection toggles between 2D displays and
3D displays.
•
Rotation: The Rotation selection allows the user to change the
current rotation angle on the 3D display. When Auto-Rotate is
selected, the 3D display will rotate continuously at the
user-specified step increment. When Auto-Rotate is not
selected, the angle of rotation can be set numerically.
•
Tilt: The Tilt setting allows the user to specify a numerical
value for the 3D plot tilt. Place the mouse cursor over the
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Menus and Commands
currently displayed 3D plot and hold the left mouse button
down. Drag the mouse cursor to display the 3D plot at the
desired rotation and tilt angle.
•
Wire Density: The Wire Density radio buttons allow for the
selection of three separate 3D plot wire densities.
•
Projection: The Projection check buttons allow for the selection viewing of 3D figure projections on XZ and YZ planes.
•
Colors: The Colors tab allows the user to specify background
and data colors for the Projection Window. A standard
Windows color pallet is available.
Upon completing the desired setup, click the OK button to confirm
the selection, click Cancel to restore the previous settings, or press
the System button to reach the System Setup.
Axes
The Axes Direction indicators are selected from the Projection
Setup dialog. This dialog can be accessed with the Setup button in
the Projection window.
When activated, this function displays the orientation of the V and
W axes.
Turn the Axes legend ON and OFF with the check box.
Projection Grid
The Projection Grid is toggled from inside the Projection Setup
dialog.
This selection toggles the grid pattern in the position plot area. This
setting is only available for the 2D projection.
Use the check box to turn the grid ON.
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BeamMaster-USB User Manual
Dimension
The Dimension setting is selected from the Projection Setup
window.
The Projection window can display the beam intensity profile in two
dimensions or in three dimensions. This function is used to toggle
between the 2D and 3D representations by utilizing the radio
buttons—see “Radio Button” (p. 3-8).
Both the 2D and 3D views are mathematical constructions based on
the profile information obtained from the knife-edges.
Figure 4-4. Example of 2D Resolution
Figure 4-5. Example of 3D Medium Wire Density
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Menus and Commands
3D Features
This option can be activated from the Projection Setup window.
•
Rotation: The Rotation function affects the optical axis or
azimuth of the 3D display.
Adjust the viewing angle using the Value Entry Box. The
possible values for the Rotation Angle are 0 through 360
degrees. The Rotate Angle value can only be changed
when the Auto Rotate box is not selected. The projection
can be made to rotate automatically with a selected step
interval by utilizing the Auto-Rotate check box. When
the Auto Rotate box is selected, the step increment can be
set to the desired value.
•
Tilt: The Tilt function selects the tilt viewing angle of the 3D
plot. The 3D plot can be viewed at horizontal tilt angles
between 0 and 90 degrees in 1-degree increments. The horizontal tilt angle can be entered in the Value Entry box.
Free adjustment of rotation and tilt angle is accomplished by
placing the cursor over the graphical 3D display while
holding the left mouse button down. Movement with the
left mouse button down will adjust the tilt and rotation
simultaneously.
•
Wire Density: This selection determines the number of wires
utilized to construct the 3D plot. The high-density setting can
affect the update rate of the displayed 3D profile, based on the
performance of the computer system and video card.
•
Projection: The Projection check buttons allow for the selection viewing of 3D figure projections on XZ and YZ planes.
When all the desired parameters are set, click the OK button to
confirm the selection, click Cancel to restore the previous settings,
or press the System button to reach the System Setup.
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BeamMaster-USB User Manual
Rotation Angle
Rotation is adjusted from the Projection Setup dialog.
The Rotation function is used to change the viewing angle of the 3D
projection. The rotation takes place about the optic axis or azimuth
of the 3D display
Adjust the rotation angle with the Value Entry box. The possible
values for the Rotation angle are 0 through 360 degrees. When
Auto-Rotate is On, the user can set Step increment between 1 and 30
degrees. The Auto-Rotate function will rotate the 3D display continuously at the user-specified step increment. When Auto-Rotate is
Off, the user can set Rotation Angle to any desired value between
0 and 360 degrees.
Place the mouse cursor over the currently displayed 3D plot and
hold the left mouse button down. Drag the mouse cursor to display
the 3D plot at the desired rotation and tilt angle.
The projection can be made to rotate automatically in 5-degree
increments by selecting the Auto check box.
Plot
•
The Plot window can be turned ON and OFF by choosing the
Plot menu item from the View menu, pressing the F7 key, or
by clicking the
button on the tool bar.
The Plot window provides a graphical display of beam power versus
time. The graph presentation includes the temporal power fluctuations and provides a way to observe long-term power fluctuations.
The Plot window also displays the number of points accumulated,
elapsed time clock, and the exact time/division partition.
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Menus and Commands
•
Pause: The Pause button is used to temporarily stop power
logging. Press the button again to continue.
•
Reset: The Reset button is used to reset all accumulated data
(history displayed in the current session).
•
Save: The Save button is used to save the current or the most
recent 500 measurements displayed.
•
Setup: The Setup button is used to set the relevant Plot Setup
parameters.
To get help on this window, press the F1 key when it is the active
Window. The Active window is the window in the window area
with the highlighted title bar.
Reset
The Rest button is accessed from the Plot or Chart windows.
The Reset option enables the user to reset all accumulated data for
the Plot/Chart functions in the current session (Restart operation).
To activate Reset, place the mouse cursor over the Reset button and
click the LEFT button once. The Plot/Chart graph will redraw after
the Reset. The current accumulated data points are discarded.
Save Plot
The Save button is accessed from the Plot window.
This option enables the user to save up to 500 data points. Several
plot files can be saved during the same session.
Data is saved as text in a file named *.PLT or as an Excel file named
*.XLS. The plot file name is created automatically, when the “Automatic” option is selected in the Plot Setup > Create File Name
option. The file name is composed of the date and time in the
following format:
ddhhmmss.PLT
Where dd = day, hh = hour, mm = minutes, ss = seconds.
The default automatic file name can be changed later. On this
process will allow uninterrupted data collection.
Plot File Format
The data is stored in TEXT file format and contains the following
data:
•
General details like system name and date.
•
A table of time values paired with the displayed power value
in milliwatts.
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BeamMaster-USB User Manual
Plot Setup
Plot Setup is selected from the Setup button in the Plot window.
•
Range: The Range tab provides control to allow the user to
specify the vertical plot scale.
•
Units: The Units selection control works in conjunction with
the Range selection for vertical scale selection.
•
Time: The Time control allows the user to specify the rate of
data collection.
•
Colors: The Colors tab allows the user to specify background
and plot colors for the Plot window. A standard Windows color
pallet is available.
When all the desired parameters are set, click the OK button to
confirm the selection, click Cancel to restore the previous settings,
or press the System button to reach the System Setup.
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Menus and Commands
Plot Range
The Plot Range is selected from inside the Plot Setup window.
The vertical scale of the Plot graph can either be automatically
scaled or held at a user-specified value.
When AutoRange is activated, the system continuously adjusts both
the minimum and maximum limits of the Plot. AutoRange is
designed to display the greatest amount of detail on the window.
When AutoRange is turned off, the system leaves the scale at the last
auto scale setting, and manual control of the scale can be introduced.
Use the Min and Max values using the Value Entry Boxes for the
appropriate scale adjustment. When adjusting the Min and Max
values, avoid a situation where large measurement fluctuations may
go beyond the maximum and minimum vertical scale. The Off Scale
value will be displayed as flat lines at the top or bottom of the scale.
Plot Units
The Units are selected from inside the Plot Setup dialog.
The user can toggle between mW and µW units for the Plot presentation. Select the units with the radio buttons—see “Radio Button”
(p. 3-8).
Time Scale
The Time Scale is selected from inside the Plot Setup dialog or the
Chart Setup dialog.
The rate at which the BeamMaster-USB software plots the data is
controlled with this setting. Set the desired Sec/div value via the
value entry box.
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BeamMaster-USB User Manual
The Time scale will change the horizontal scale of the Strip charts.
The value can be changed in one-second increments. The fastest
possible rate of display is 0.2 sec, which corresponds to the
maximum 5 Hz update rate. The displayed data corresponds to a
5 Hz collection rate even though the display may not update at that
rate.
Chart
•
The Chart window can be turned ON and OFF by choosing the
Chart menu item from the View menu, pressing the F8 key, or
by clicking the
button on the tool bar.
The Width/Position Chart window provides a real-time strip chart
display of beam position (X,Y) versus time, or beam width of V and
W profiles measured at the System Clip Level.
These charts enable the user to observe long-term beam position
stability or beam width variations. The Chart window graphically
displays the absolute position or width versus time, the number of
points accumulated, elapsed time clock, and the exact time/division
scale increment. The Setup button is used to set chart scaling and
color options. The data can also be saved as a text file for external
analysis.
•
Pause: Click the Pause button to interrupt the data collection.
The current data is not lost when you use this function. When
the Pause button is selected, it changes to a Continue button to
resume data collection.
•
Reset: Click the Reset button to clear the current data.
•
Save: Click the Save button to save the current data, up to the
most recent 500 points collected. The Save functions automatically assigns a file name corresponding the current date and
time with a .crt or .xls file extension.
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Menus and Commands
•
Setup: Click the Setup button to access all of the Chart Setup
parameters. The setup parameters allow the user to set the data
collection interval, vertical chart scale, and colors.
To get help on this window press the F1 key when it is the active
Window. The Active window is the window in the window area
with the highlighted title bar.
Save Chart
The Save Chart button is selected from the Chart window.
This option enables the user to save up to 500 data points from the
current session. The user can save several chart files during the same
session.
Data is saved as text in a file named *.PLT or as an Excel file named
*.XLS. The chart file name is created automatically (when option
"Automatic" is selected in Chart Setup > Create File Name option).
The file name is composed of the date and time as follows:
ddhhmmss.CRT
Where dd = day, hh = hour, mm = minutes, ss = seconds.
The default file name can be changed later. This process will allow
uninterrupted data collection.
Chart File Format
The data is stored in TEXT file format and contains the following
information:
•
General details, like the system name and date.
•
Time values paired with the displayed X & Y Position values,
or
•
A table of time values paired with the displayed V & W Width
values.
All dimension values are in microns.
Example Chart File
Chart File Data
BeamMaster USB, Version 1.03
File: C:\PROGRA~1\BM1035\10160540.crt
Date: 10 Mar 2005
Time: 16:05:40
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BeamMaster-USB User Manual
S/N: 1035
Average: 1
Wavelength: 1300(nm)
Clip Level: 13.5%
Time Width W Width V
(sec) (µm) (µm)
0.0 1682.566 2215.905
1.1 1661.088 2248.827
etc.
Chart Setup
Chart Setup is selected from the Setup button in the Chart window.
•
Range: Select a range for the Y axis of the Chart. The
Auto-Zoom box will control the Y axis mode. When the box is
checked, the chart’s Y axis is automatically scaled by the software. When the Auto-Zoom box is not checked, the user can
set the Y scale with the minimum and maximum value entry
boxes in the dialog. Data that occurs outside of the
user-entered manual scale settings will be plotted as a straight
line at the top or bottom of the scale, as appropriate.
•
Options: Selects either Position or Width versus Time Charts.
The position selection will graphically display the absolute
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Menus and Commands
position data vs. time in a strip chart form. The Width selection
will graphically display the beam width vs. time in a strip chart
form. Verify the range selection before exiting the Chart Setup
screen.
•
Time scale: The Time selection sets the horizontal scale on the
strip chart. The horizontal scale contains 20 divisions.
Multiply the Time value by 20 to determine the amount of time
utilized for a complete chart display.
•
Create File: Select Automatic or Manual, for the name
creation of the chart data file.
•
File Type: Select the desired file type (Log or Excel). The Log
file is saved in a standard text format. The Excel file is saved
as an Excel Workbook.
•
File Name: If you select Manual mode in Create File, click the
Browse button to assign a File name and path for the chart data
file.
•
Colors: The Colors tab allows the user to specify Background,
Width V,W, or Position X,Y colors for the Chart window. A
standard Window color pallet is available.
When all the desired parameters are set, click the OK button to
confirm the selection, click Cancel to restore the previous settings,
or press the System button to reach the System Setup.
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BeamMaster-USB User Manual
Chart Range
The Chart Range is selected from inside the Chart Setup window.
The vertical scale of the Chart graph can either be automatically
scaled (using the AutoRange option), or be held at a constant value.
When AutoRange is activated, the system continuously adjusts both
the minimum and maximum limits of the Chart to display the
greatest amount of detail on the window.
When AutoRange is turned off, the system leaves the scale at the last
autoscale setting, and manual control of the scale can be introduced,
using the Min and Max values via the Value Entry boxes for the
desired Manual scale settings. When adjusting the Min and Max
values, avoid a situation where large measurement fluctuations may
go beyond the maximum and minimum vertical settings. Off scale
readings are displayed as straight lines at the top or bottom of the
chart, as appropriate.
View Tool Bar
View Tool Bar can be hidden, or shown, by selecting either Tool Bar
from the View Menu, or pressing the Shift + Ins keyboard buttons.
This option enables the user to toggle between the Show Tool Bar
option and the Hide Tool Bar option.
When the Tool Bar is selected (activated), there is an additional line
on top of the window containing Tools (picture shortcuts to some of
the most common used system functions), along with date and time
information.
When this option is not selected, the Tool Bar line disappears. In this
case, the user has to activate the various system functions from the
menu or keyboard shortcuts.
View Status Bar
View Status Bar can be hidden, or shown, by selecting either Status
Bar from the View Menu, or pressing the Ctrl + Ins keyboard
buttons.
This option enables the user to toggle between the Show Status Bar
option and the Hide Status Bar option.
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Menus and Commands
Options Menu
The Options menu allows the user to operate the saved measurement
data, perform Test an save images and snapshot files.
•
Load Configuration File: This option allows the user to load
a certain configuration file containing all the system setup
parameters.
•
Save Configuration File: This option allows the user to save
the current BeamMaster-USB software settings.
•
Save Image as: This function is used to save the active
window or full screen as a *.BMP or *.JPG file.
•
Save Snapshot: This function is used to save the laser beam
data information displayed to a file with a *.SNP extension.
•
View Snapshot: This function is used to view the laser beam
data information saved to a file with a *.SNP extension.
•
Save Data in Text File: This function is used to save the
profiles or projection data displayed to text file for analysis
with other programs.
•
Start Test: This function is used to start and stop automatic
online Pass/Fail testing for user-selected parameters.
•
Step: In this mode, the last measurement is displayed and the
window is frozen.
•
Server Mode: This option is provided to enable a remote operation of the application program.
•
User Data: This option enables the user to insert any string of
characters that will appear in the Log/Test files.
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BeamMaster-USB User Manual
•
Close All Windows: When this item is selected, all open
windows are closed.
•
Save Settings on Exit: This option allows the user to save the
current software settings in a default configuration file
($$$.INI).
A check mark in front of a menu item indicates that the function is
active.
A gray menu item means that the item is currently unavailable and
that additional conditions must be met for this item to be active. For
example, to start log, the appropriate log setup parameters must be
set.
Load
Configuration File
Load Configuration File can be selected from the Options menu,
pressing the Ctrl + O keys, or by clicking the
button on the Tool
Bar.
This option allows the user to load a specific configuration file (files
with a .INI extension) containing all the system setup parameters.
Loading a Pre-saved Configuration File
1.
Select Load Configuration File from the Options Menu, press
the Ctrl + O buttons, or click the shortcut button on the Tool
Bar. There is no need to change the file type because INI is the
default.
The BeamMaster-USB data files are located in the Data folder
in the BeamMaster-USB directory. The BeamMaster-USB directory is located in Program Files by
default.
2.
Click on the desired INI file from the file list on the left.
3.
Click OK to load the file. The BeamMaster-USB software will
update all windows with the new configuration.
Automatic Configuration
The BeamMaster-USB software automatically saves the current
configuration each time it is closed. Enabling the Save Settings
option on Exit (from the Options menu) will cause the
BeamMaster -USB software to store the current configuration into
the default configuration file, ($$$.INI) upon exiting the software.
When the software is started, it will automatically load the $$$.INI
file.
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Menus and Commands
Save
Configuration File
Configuration File
Contents
Save Image as
1.
Select Save Configuration File from the Options menu. There
is no need to change the “File Type” because .ini is the default.
The BeamMaster-USB data files are located in the “Data”
folder in the BeamMaster-USB directory. The BeamMaster-USB directory is located in “Program Files” by
default.
2.
Type a filename for the configuration file in the box below the
word “File name.” The file saving process will automatically
attach the .ini file extension.
3.
Click OK. The configuration file can now be loaded at any
time using the Load Configuration File command—see “Load
Configuration File” (p. 4-54).
The following information is stored in the Configuration (INI) file.
•
System serial number
•
System wavelength setting
•
System clip level setting
•
Setting for averaging
•
Setting for head tilt
•
Setting for system beep
•
Active windows size & position
•
Setup parameters for each window
•
Test setup parameters
The Save Image as function is selected from the Options Menu.
This function is used to save the active window or full screen as a
*.BMP file or a *.JPG file.
Saving an Image File
1.
Select Save Image as from the Options Menu.
2.
Select Active Window or Full Screen option or, alternatively,
press the F11 key to start saving to the active window. A standard Windows file dialog is displayed.
3.
Select BMP or JPG as the File Type.
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BeamMaster-USB User Manual
Save Snapshot
4.
Select the desired file directory.
5.
Type a filename for the image file in the box below the word
File name. The file saving process will automatically attach
the appropriate file extension.
6.
Click OK.
Save Snapshot is selected from the Options menu.
This function is used to save the laser beam data information
displayed to a file having the *.SNP extension. The data is saved as
a binary file and can be processed by this application program later.
Saving a Profile Snapshot
View Snapshot
1.
Select Save Snapshot menu item from the Options menu. A
standard Windows file dialog is displayed. There is no need to
change the File Type because SNP is the default.
2.
Select the desired storage directory.
3.
Type a filename for the snapshot file in the box below the word
File name. There is no need to have the file name end in .SNP
as the program automatically saves the file with that extension.
4.
Click OK.
View Snapshot is selected from the Options menu.
This function is used to view the laser beam data information saved
to a file having the *.SNP extension.
Viewing a Snapshot File
1.
Select View Snapshot menu item from the Options menu. A
standard Windows file dialog is displayed.
2.
Select a snapshot file.
3.
Click Open. The snapshot file displays.
Closing a Snapshot File
To close a Snapshot file, select the View Snapshot menu item from
the Options menu. The system restores real-time measurement
displays. Alternatively, press the X sign at the right top corner of the
Windows screen application.
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Menus and Commands
Saving Data in Text
File
1.
Select the Save Data in Text File menu item from the Options
menu.
2.
Select Profiles or Projection option. A standard Windows file
dialog is displayed. There is no need to change the File Type
because .TXT is the default.
3.
Select the desired storage directory.
4.
Type a filename. The .txt file extension will automatically be
attached during the saving process.
5.
Click OK.
Importing Files into
Excel
All BeamMaster-USB files are stored in ASCII file format for easy
printing, viewing, and analysis. Loading any of the data files directly
into Excel will activate the import wizard. A “fixed width” or “space
delineated” file format works best when using the import wizard.
Start Test
Start Test is selected from the Options menu, or via the
on the Tool Bar.
button
This function is used to start and stop automatic online Pass/Fail
testing for user-selected parameters.
•
Pause: The Pause button stop testing temporarily. Press the
button again to continue.
•
Print: The Print button prints the test results directly to the
default Windows printer.
•
Save: The Save button saves the test results to a file name with
a .TXT file extension (for a text file) or a .XLS file extension
(for an Excel file). The data file will be located in the
BeamMaster-USB data folder
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BeamMaster-USB User Manual
•
Setup: The Setup button will display the configuration
window utilized to set the test parameters, as well as file name
options.
To close the Test window, select Stop Test under the Options Menu,
or click the
Test Setup
button on the Tool Bar.
Test Setup is selected from the Test Window. This Setup window is
used to enter general information about the test and to activate any
of the nine available parameters. When configured for the first time
the Min and Max values will be based on the current detector head
limits.
•
User Name, User Data: These fields are available to enter
information associated with the test.
•
Measurements: Any one of the listed 9 parameters can be
activated by placing the mouse cursor at the option box and
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Menus and Commands
clicking the LEFT mouse button once. Each active parameter
requires a minimum and maximum level setting.
•
•
Step Mode
Create File Name: One of the following two options can be
activated for saving a test file:
•
Automatic - Automatically assigns a file name corresponding the current date and time with a .TXT or .XLS
file extension. Each press on the Save button creates a
new file, with the above naming procedure.
•
Manual - Get a file name from File Name frame.
File Type: One of the following two options can be used to
save test data:
•
.TXT - for a text file
•
.XLS - for an Excel file
•
File Name: This frame is enabled if the Manual option is
selected in the Create File Name frame
•
When all the desired parameters are set, click the OK button to
confirm the selection, click Cancel to restore the previous
settings, or press the System button to reach the System Setup.
Access the Step mode by selecting Step from the Options window,
pressing the F9 key, or by clicking the
button on the Tool Bar.
In this mode, the last measurement is displayed and the window is
frozen.
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BeamMaster-USB User Manual
The Step tool bar button will be disabled unless the system is in Step
mode. To enter Step mode: Select System Setup from the System
menu and toggle from Mode.
To take the next measurement, do one of the following:
Server Mode
•
Click the
•
Press the F9 key
•
Select the Step menu item from the Options Menu
button on the Tool Bar
Server Mode is selected from the Options menu, or via the
button on the Tool Bar.
This option is provided to enable a remote operation of the application program.
1.
Select Server Mode menu item from Options Menu, or press
the
button on the Tool Bar. A blinking icon will appear at
the Tool Bar, adjacent to the Time field.
2.
Rest the mouse cursor at the blinking icon—this will display
the Server Host Address (for identification of the client
computer via TCP/IP protocol).
3.
Using the same system CD disk, install the software on the
remote computer and start the program. The following
message will display:
System Error #XX : BeamMaster-USB system cannot be
started. Please contact your Provider.
4.
Press OK. The following message will display:
Would you like to initiate a remote Client application?
5.
Press Yes.
6.
Input the Host Address name of the Server computer and then
press OK.
At this point, a hardware testing routine will be performed.
From this stage and on, the remote client computer will
be running the same software and all measurements and
analysis functions will be performed identically to the
main computer which hosts the hardware.
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Menus and Commands
User Data
User Data is selected from the Options menu.
User Data enables the user to insert any information required during
the measurement session. The User Data string is limited to 60 characters.
After inserting the user data information and pressing the OK button,
the information inserted will automatically be displayed in the Title
Bar, just right of the system name.
Close All Windows
Close All Windows can be initiated by either selecting this option
from the Options Menu or by pressing the Ctrl + W keys.
When this item is selected, all open windows are closed.
Save Settings on
Exit
Save Settings on Exit is selected from the Options Menu.
This option allows the user to save the current software settings in a
default configuration file ($$$.INI). When the software is started, it
will automatically load this saved configuration file.
A check mark in front of the Save Settings on Exit menu item indicates that this function is active. The default setting is enabled.
System Menu
The System menu allows the user to operate with system data.
•
System Setup: System Setup allows BeamMaster-USB to be
configured to suit a particular set of test needs.
•
Add Detector Head: This function allows the user to
configure an additional detector head.
The available keyboard shortcuts are displayed on the right side of
the menu. These shortcuts may be activated from the Main Window
by pressing the corresponding keyboard combinations.
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BeamMaster-USB User Manual
A check mark in front of a menu item indicates that the function is
active.
A gray menu item indicates that the item is currently unavailable.
For example, to start log it has to first be setup.
System Setup
System Setup can be accessed via the System button in each operational window, or from the System Menu. The system Setup can also
be accessed by clicking the current Wavelength display in the status
bar. System Setup allows BeamMaster-USB to be configured to suit
a particular set of test needs.
Wavelength
This setting is accessed from the System Setup dialog.
The wavelength value is utilized to calculate the current power
reading. Wavelength should be set to match the laser source. BeamMaster-USB detectors have response curves that are dependent on
the wavelength. These response curves have been corrected within
the calibration file. Therefore, it is important to enter the correct
wavelength to obtain a correct power measurement.
Possible Values for Wavelengths
•
190 to 1100 nm for the silicon-UV version
•
800 to 1800 nm for the InGaAs version
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Menus and Commands
Clip Level
This setting is accessed from the System Setup dialog.
The System Clip Level sets the clip level where most of the system
calculations are performed. These calculations include: Beam
Width, Gaussian Fit, and Elliptical measurements.
A clip level defines the percentage of the peak intensity profile at
which beam is measured. For example, a clip level of 50% indicates
that the beam is to be measured at its full width at half maximum
(FWHM), whereas a clip level of 13.5% measures the beam at a
point that is 13.5% of the peak of the profile. The 13.5% level corresponds to the 1/e2 point of a Gaussian profile.
Select a value for the System Clip Level from the Value Entry Box.
The selected value will be displayed on the Status Bar.
Average
The Average setting is accessed from the System Setup dialog. The
System Setup dialog can be accessed from the System Menu or by
clicking on the wavelength field in the Status Bar.
The Average function provides a successive averaging feature which
smoothes the Position, Profile, and Power displays of noisy or
unstable lasers. The average can be set to integer values between
1 and 20. A value of 1 corresponds to no averaging.
For example, if a value of 10 is chosen, ten successive measurements
are averaged and the result is displayed. When an eleventh measurement is taken, the first measurement value is dropped and the second
through the eleventh are averaged.
The selected value determines the number of successive measurements that will be averaged. A successive averaging technique
results in an update rate that is not affected.
Select an Average value from the Value Entry Box. The selected
value is displayed on the Status Bar.
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BeamMaster-USB User Manual
Head Tilt
This setting is accessed from the System Setup dialog.
The Head Tilt option is utilized to input the actual orientation of the
head. This option will orient the on-screen view to match physical
reality. This option is utilized in a situation where the measured
width of a laser beam does not coincide exactly with either the V or
W axes defined by the BeamMaster-USB.
The Head Tilt feature is especially important when analyzing elliptical beams. When the knife-edges are not properly oriented with
respect to the major and minor axes of the ellipse, the width
measurements along V and W will not reflect the true maximum and
minimum widths of the beam. If the beam cannot be rotated, it is
necessary to physically rotate the measuring head about the optical
axis of the laser beam.
Select an Head Tilt value via the Value Entry Box. The selected
value is displayed on the Status Bar.
Mode
This setting is accessed from the System Setup dialog.
The Mode function is used to switch between a real-time mode of
display (Run), and a manually-activated mode (Step).
•
In Run mode the window display is updated continuously in
real-time.
•
In Step mode the last measurement is displayed and the
window is frozen. A single new set of measurements will be
made only when a Step command is selected.
The Step function is selected by clicking the
Tool Bar
button or by pressing the F9 key . A Step menu item is
also available in the Options menu. The Step function
allows a detailed examination to be made on each profile
captured.
Toggle between these two options using the radio button—see
“Radio Button” (p. 3-8). The mode selected is displayed on the
Status Bar.
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Menus and Commands
Beep
This setting is accessed from the System Setup dialog. The System
Setup dialog can be accessed from the System menu or by clicking
on the current wavelength value in the Status Bar.
The Beep Option box controls whether BeamMaster-USB will
produce the default system beep whenever an error occurs. For
example, when Beep is turned ON and the laser source is OFF, the
Low Power error will be displayed while the system beeps.
Select Beep using the Option box.
Color Scheme
The color scheme tab enables the user to set the background and
foreground colors for all windows. Select the desired color from the
standard Windows color pallet. Custom colors are also available
with the appropriate video card and Windows color setting.
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BeamMaster-USB User Manual
The Position, Profile W, Profile V, Power, Projection, Plot, and Chart
windows allow selection of the background and foreground colors.
Selecting a Color Scheme
1.
Click Color scheme on the Color tab of System Setup.
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Menus and Commands
2.
Select the color scheme from the drop-down menu.
3.
Press and hold the Preview button to view the selected colors
without accepting the settings and exiting the dialog.
4.
Press the Set button to change the color scheme for all
windows.
Creating a New Color Scheme
1.
Click Color scheme on the Color tab of System Setup.
2.
Select “User defined” from the droop-down menu.
3.
Place the mouse over the desired color box and click the LEFT
mouse button once.
4.
Press the Save button to save a new color scheme based on the
selected color labels.
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BeamMaster-USB User Manual
5.
Add Detector
Head
Press the Set button to change the color scheme for all
windows.
The Add Detector Head function is selected from the System Menu.
This function allows the user to configure an additional detector
head.
Loading
4 - 68
Menus and Commands
This option enables identifying the detector head serial number
which is currently being connected to the system, or selecting any
required detector serial number from the calibration file list. Press
the Ok button to confirm setting, or press the Cancel button to abort.
Adding Calibration Files
Copy all calibration files from the CD disk (or floppy disk or Flash
disk) provided with the sensor head to the current BeamMaster-USB
working directory.
Upon activating this option, a data entry box is displayed. Input the
detector Serial Number, then appropriate drive where the disk was
inserted. Press Copy to confirm the selection, Cancel to abandon.
During the copying operation, a message box is displayed,
presenting the name of the file being copied to BeamMaster-USB
working directory and the amount of data copied.
Windows Menu
The Windows menu allows the user to graphically arrange the open
windows.
•
Cascade: This command will attempt to arrange all open
windows on top of each other, but slightly null for each of
selection.
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BeamMaster-USB User Manual
Help Menu
•
Tile Vertical: This command will attempt to tile the open
windows horizontally along the top of the window area. It
works well with two open windows. When more windows are
active they will overlap. The overlap results when the window
size cannot be reduced to a level to fit the available area.
•
Tile Horizontal: This command will attempt to tile the open
windows vertically along the left edge of the window area. It
works well with two open windows. When more windows are
active they will overlap. The overlap results when the window
size cannot be reduced to a level to fit the available area.
•
Arrange Icons: When a window is minimized it is reduced to
a icon representation and stacked along the bottom of the
window area. These icons can be moved around with the
mouse. To return them to a ordered group of icons along the
bottom of the window area, select this function. This is useful
if the icon has been covered up with another window. Higher
windows screen resolutions may help.
When a Help subject is displayed, additional help can be displayed
by pressing the F1 key.
•
Contents: This function allows the user to access Help information on the active window.
•
Search for Help On: This option will bring up a list of all the
topics in the Help system.
•
Active Window: This option retrieves context-sensitive help
on the active window.
•
Coherent on the Web: The link on the Website.
•
About: The About screen provides the current software
version, detector head serial number, and copyrights.
4 - 70
Menus and Commands
The list of keys or key combinations on the right side of the menu
indicate the corresponding keyboard shortcut for that feature. These
shortcuts may be activated from the Main window by pressing the
keyboard combination.
Contents
The Contents function is selected from the Help Menu.
This function allows the user to access Help information on the
current active window.
To access the on-line BeamMaster-USB Manual, select the Contents
menu item form the Help Menu. The Contents topic are organized
into chapters. To find information on a desired topic, click on the
displayed chapter heading.
You can return to the Table of Contents by clicking Contents.
To find specific information fast, use the Search for Help On menu
item under the Help menu.
Search for Help On
The Search for Help On function is selected from the Help Menu, or
alternatively, by pressing the Ctrl+F1 key.
Additional help can be displayed on the current subject by pressing
the F1 key. This option will bring up a list of all the topics in the Help
system. Type the first few letters of the topic of interest. The search
engine will automatically select any topic that matches the entry. If
no entries match your topic, scroll through the list to a find a related
topic.
You can also click the Find tab. Windows will compile a cross-reference list of all the word used in the Help file. Using Find will often
pinpoint the exact topics of interest.
Active Window
The Active Window function can be accessed by selecting it the
Help Menu, pressing the F1 key, or clicking the
button on the
Tool Bar.
The Active Window can be identified by a colored title bar background. A depressed tool bar button indicates the windows available
for selection. Activate a window by clicking on any part of the
window. To get context-sensitive help on the active window, click
the F1 key, select Active Window from the Help Menu or click the
Help button on the Tool Bar. This will bring up the help topic for the
current active Window.
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BeamMaster-USB User Manual
Coherent on the
Web
The Coherent on the Web function is selected from the Help Menu.
About
The About box is selected from the Help Menu.
The Website item in the Help Menu will start the default browser and
connect to http://www.coherent.com.
The About screen provides the current software name and version,
detector head, serial number, and copyright information.
The Close button will clear the About information from the screen.
4 - 72
Hardware
SECTION FIVE: HARDWARE
This section covers the technical specifications for the following
detector heads:
•
•
•
•
•
•
Dimensions and distances (this page)
BM-3 InGaAs detector head (p. 5-2)
BM-3 Silicon-UV detector head (p. 5-3)
BM-7 InGaAs detector head (p. 5-4)
BM-7 Silicon-UV detector head (p. 5-5)
USB External Box (p. 5-6)
All detector heads conform to applicable CE Mark standards.
Dimensions and
Distances
Figure 5-1. Internal Dimensions
The distance to image plane is defined as the distance from the scan
head front surface to the knife edge.
Figure 5-2. Distance to Image Plane
5-1
BeamMaster-USB User Manual
BM-3 InGaAs
Detector Head
Figure 5-3. BM-3 InGaAs Detector Head Dimensions
Table 5-1. BM-3 InGaAs Detector Head Specifications
Parameter
Description
Spectral Response
800 to 1800
Number of Knife-Edges
3
Sensor Input Aperture
5 mm circular (active area Ø3)
Dimensions
35.2 mm (W) x 105 mm (H) x 87.5 mm (L)
Weight
22 oz.
Minimum Detectable Power
10 µW
Maximum Power
Power up to 5 mW
Relative Power Measurement
0.1 µW resolution
Power Measurement Accuracy ± 10%
Damage Threshold
1W/mm2 with total power less than 5 mW at sensor
Optical Dynamic Range
10 µW/cm2 to 10W/mm2 (no filter)
Beam Size Range (at 1/e2)
3 mm to 3 µm
Beam Width Resolution
width < 100 µm: 0.1 µm
width >= 100 µm: 1.0 µm
Beam Position Resolution
1 µm
Beam Position Accuracy
± 15 µm
Distance to Image Plane
5.5 ± 0.08 mm distance from scan head front surface to image plane (knife edge)
0.5 + 0.18 mm distance from the bottom of the round entrance aperture to the
image plane
Maximum Update Rate
5 Hz—see “Speed Issues” (p. 6-6)
Cable
2.5 m long, attached to the head
Filters
The InGaAs head does not use filters due to mechanical constraints.
Blade eccentricity for the BM-3 is ± 15 µm.
5-2
Hardware
BM-3 Silicon-UV
Detector Head
Figure 5-4. BM-3 Silicon-UV Detector Head Dimensions
Table 5-2. BM-3 Silicon-UV Detector Head Specifications
Parameter
Description
Spectral Response
Number of Knife-Edges
Sensor Input Aperture
Dimensions
Weight
Minimum Detectable Power
Maximum Power @ 633 nm
190 to 1100
3
5 mm circular
35.2 mm (W) x 105 mm (H) x 87.5 mm (L)
22 oz.
10 µW
No filter:Power up to 5 mW
NG4 filter:Power up to 50 mW
NG9 filter:Power up to 1W
Relative Power Measurement 0.1 µW resolution
Detector Type
UV-enhanced Si 10*10 mm
Damage Threshold
200W/mm2 with total power less than 5 mW at sensor
Optical Dynamic Range
10 µW/cm2 to 10W/mm2 (no filter)
2
Beam Size Range (at 1/e )
5 mm to 3 µm
Beam Width Resolution
width < 100 µm:0.1 µm
width >= 100 µm:1.0 µm
Beam Position Resolution
1 µm
Beam Position Accuracy
± 15 µm
Distance to Image Plane
5.5 ± 0.08 mm distance from scan head front surface to image plane (knife edge)
0.5 + 0.18 mm distance from the bottom of the round entrance aperture to the image
plane
Maximum Update Rate
5 Hz—see “Speed Issues” (p. 6-6)
Cable
2.5 m long, attached to the head
Filters
NG4 and NG9 can be used for the 350 to 1100 nm range. See filter files NG4.FLT
and NG9.FLT for a text format transmission table.
Blade eccentricity for the BM-3 is ± 15 µm.
5-3
BeamMaster-USB User Manual
BM-7 InGaAs
Detector Head
Figure 5-5. BM-7 InGaAs Detector Head Dimensions
Table 5-3. BM-7 InGaAs Detector Head Specifications
Parameter
Description
Spectral Response
800 to 1800, calibrated range: 800 to 1720 nm
Number of Knife-Edges
7
Sensor Input Aperture
9 mm square (active area Ø3)
Dimensions
35.2 mm (W) x 105 mm (H) x 87 mm (L)
Weight
22 oz.
Minimum Detectable Power
10 µW
Relative Power Measurement 0.1 µW resolution
Maximum Power
Power up to 5 mW (> 0.1 mm diam.)
Power Measurement Accuracy ± 10%
Damage Threshold
200W/mm2 with total power less than 5 mW at sensor
Optical Dynamic Range
10 µW/cm2 to 10W/mm2 (no filter)
Beam Size Range (1/e2)
3 mm to 10 µm
Beam Width Resolution
width < 100 µm:0.1 µm
width >= 100 µm:1.0 µma
Beam Position Resolution
1 µm
Beam Position Accuracy
± 15 µm
Distance to Image Plane
3.5 ± 0.08 mm distance from scan head front surface to image plane (knife edge)
0.5 + 0.18 mm distance from the bottom of the round entrance aperture to the
image plane
Maximum Update Rate
5 Hz—see “Speed Issues” (p. 6-6)
Cable
2.5 m long, attached to the head
Filters
The InGaAs head does not use filters due to mechanical constraints.
Blade eccentricity for the BM-7 is ± 30 µm.
a. Optional: An InGaAs 5 mm diameter detector is also available (model BM7-InGaAs-5)
5-4
Hardware
BM-7 Silicon-UV
Detector Head
Figure 5-6. BM-7 Silicon-UV Detector Head Dimensions
Table 5-4. BM-7 Silicon-UV Detector Head Specifications
Parameter
Description
Spectral Response
Number of Knife-Edges
Sensor Input Aperture
Dimensions
Weight
Minimum Detectable Power
Relative Power Measurement
Maximum Power @ 633 nm
190 to 1100
7
9 mm square
35.2 mm (W) x 105 mm (H) x 87 mm (L)
22 oz.
10 µW
0.1 µW resolution
No filter:Power up to 5 mW (> 0.1 mm diam.)
NG4 filter:Power up to 50 mW
NG9 filter:Power up to 1W
UV-enhanced Si 10*10 mm
200W/mm2 with total power less than 5 mW at sensor
10 µW/cm2 to 10W/mm2 (no filter)
9 mm to 15 µm
width < 100 µm:0.1 µm
width >= 100 µm:1.0 µm
1 µm
± 15 µm
3.5 ± 0.08 mm distance from scan head front surface to image plane (knife edge)
0.7 + 0.18 mm distance from the bottom of the round entrance aperture to the image
plane
5 Hz—see “Speed Issues” (p. 6-6)
2.5 m long, attached to the head
NG4 and NG9 filters can be used for 350 to 1100 nm. See filter files NG4.FLT and
NG9.FLT for a text format transmission table.
Blade eccentricity for the BM-7 is ± 30 µm.
Detector Type
Damage Threshold
Optical Dynamic Range
Beam Size Range (at 1/e2)
Beam Width Resolution
Beam Position Resolution
Beam Position Accuracy
Distance to Image Plane
Maximum Update Rate
Cable
Filters
5-5
BeamMaster-USB User Manual
USB External Box
The BeamMaster-USB uses the USB external box to digitize and
store the information from the detector head.
LEDs
Figure 5-7. USB External Box (front view)
Table 5-5. USB External Box Specifications
Parameter
Description
Bus
USB 2.0
Cable
USB 2.0, 0.9m length
Weight
0.37 kg
Dimensions
165 mm x 120 mm x 30 mm
Power Input Requirements (typical) +5V @ 0.1A (supplied via USB cable)
Ambient Operating Temperature
10 to 35°C
A/D Converter
20 MHz sample rate at 12 bits
CE Mark
Conforms to all applicable CE Mark standards
There are two LEDs on the external box front panel:
•
GREEN illuminates when installation of the external box is
successful.
•
RED illuminates when there is an alert (possible installation
issue).
The Power connector and On/Off switch are future options.
There is 15-pin connector on the back of the external box. This
connector is connected to the detector head via the detector cable.
Figure 5-8. USB External Box (rear view)
5-6
Calculations Summary
SECTION SIX: CALCULATIONS SUMMARY
In this section:
Accuracy
•
Accuracy (this page)
•
Relative total power (p. 6-2)
•
Beam width (p. 6-3)
•
Beam centroid location (p. 6-3)
•
Gaussian fit (p. 6-4)
•
Ellipticity (p. 6-6)
•
Speed issues (p. 6-6)
The following topics provide information on how to optimize the
BeamMaster-USB to achieve the highest measurement accuracy.
The accuracy of all calculations is affected by beam peak intensity, centering, size, and background noise.
To insure optimum measurement accuracy, the following items must
be properly maintained:
•
The beam spot size should not exceed the recommended
minimum or maximum beam diameter for the detector head
being used (refer to the detector head specifications in the
“Section Five: Hardware,” section, which starts on p. 5-1).
•
The beam position should be centered in the sensor area, with
no beam area overlapping the edge of the input aperture on the
detector head.
•
The beam incidence should be normal to the face of the
detector head.
•
The background noise in the beam image can affect the calculated results. Ensure that all sources of background noise have
been eliminated if possible (“Background Noise,” is discussed,
below).
•
The successive Averaging feature can also be used to smooth
noise and beam variations.
6-1
BeamMaster-USB User Manual
Background Noise
Several sources of background noise can contribute to the overall
noise level in the system. This topic discusses the most common
noise sources.
Electronic Noise
Electronic noise can be a concern with instruments being used in
association with lasers. The BeamMaster-USB has passed CE Mark
tests indicating that it is resistant to most EMI radiation. Still,
Intense High frequency sources can induce noise into the cables and
detector head electronics. Avoid grounding the detector head and
BeamMaster-USB chassis with the laser or its power supply in a
manner that could make them susceptible to ground loops. Severe
damage to the detector head and electronics may result. It is also
recommended that the BeamMaster-USB system power supply be
surge protected and isolated from the laser power source.
Background Light
Background light noise seen by the detector head is another problem
that should be closely monitored. This noise comes from sunlight,
room lights, flash lamps, and instrumentation lights. One of the
filters can be used to reduce background light. The Power Offset
feature can be used to remove the ambient light from the power
reading.
Thermal Noise
Thermal noise can also affect the long-term stability of the BeamMaster-USB. Drift in detector head voltage and A/D converter
circuits due to large changes in room and instrumentation temperatures can contribute to background noise. The system should be
allowed to reach a stable operating temperature each time it is used.
This can take as long as 20 minutes.
Relative Total
Power
The rotating drum in the detector head contains multiple knife-edge
apertures. As an aperture passes between the laser beam and the
stationary power sensor, there is a period of time where the entire
beam is allowed to reach the sensor. At this point the BeamMaster-USB can measure the total power of the beam.
The power reading is adjusted, based on the system wavelength
setting and the wavelength response curve for the detector, and the
transmission of the current filter.
For details on minimum detectable power, measurement resolution,
maximum power, and damage threshold limits, see the appropriate
detector head specifications.
6-2
Calculations Summary
Power Accuracy
The silicon detectors are calibrated with and without the filters for
power accuracy at 633. The InGaAs detector is calibrated for power
accuracy at 1320 nm. The system is designed for ± 10% accuracy at
the specified wavelengths; therefore, the BeamMaster-USB does not
provide absolute power accuracy at this time. Consider the Power
reading to be Relative.
If absolute power accuracy is desired, the BeamMaster-USB power
reading can be hand-calibrated using a power meter. If the BeamMaster-USB reading needs adjusting, a filter file can be created that
provides the necessary correction at the given wavelength.
Beam Width
The Beam Width is measured at a clip level.
A clip level defines the percentage of the peak intensity profile at
which beam is measured. For example, a clip level of 50% indicates that the beam is to be measured at its full width at half
maximum (FWHM). A clip level of 13.5% measures the beam at
a point that is 13.5% of the peak of the profile. The 13.5% level
corresponds to the 1/e2 point of a Gaussian profile.
The BeamMaster-USB obtains the beam profile information, as
outlined under “Theory of Operation” (p. 1-3).
The maximum value in the profile is found and set to 100%. The
Profile is searched to find the points most closely matching the clip
level. The distance between the specified clip level points is the
beam width.
If no point matches the clip level, linear interpolation is used to find
the edge.
If the profile crosses the clip level more than two times, the system
picks the edges closest to the beam profile center of gravity (typically the main lobe).
If the edge of the beam is cut off because it intersects the edge of the
aperture, the profile will appear truncated on that edge.
Beam Centroid
Location
Before each blade there is a “start-of-scan” signal acting as an indicator for the beam location on the detector surface. Each system is
calibrated relative to the start-of-scan. The system calculates the
6-3
BeamMaster-USB User Manual
time from start-of-scan to the “center of gravity” of the profile. The
“center of gravity” is determined for the W axis with the following
calculation:
Where:
w
p(w)
I
W
= location along W axis
= intensity at location w on W axis
= total intensity of W profile
= center position of W axis
Simple axis translation is then used to present the data in X-Y coordinates.
The Affect of Background Ambient Light
Profiles are obtained by performing a derivation on the digitized
power curve. Ambient light is suppressed since it is constant over
the detector surface, resulting in a derivative of zero. However, if a
low power, large-area beam is examined, it is important to suppress
background illumination as much as possible.
Gaussian Fit
The Gaussian Fit is a least-squares fit of a Gaussian equation to the
cross-section beam profiles. The correlation coefficient is the
normalized sum of the residuals of the fit.
The following equation is used to determine the Gaussian Fit:
Where:
I
= the intensity of a pixel at location x
6-4
Calculations Summary
In performing a least squares fit to this equation, the following terms
are derived:
V
C
s
= the maximum intensity of the fitted Gaussian
curve (Peak intensity)
= the center of the Gaussian fit peak (Centroid)
= the radius of the Gaussian fit curve at the 1 /e2
intensity level (Diameter)
Gaussian Fit
Diameter
The Gaussian Diameter is the width of the Gaussian fit at the clip
level specified.
Gaussian
Correlation
Coefficient
Given a theoretical Gaussian curve (G) and a set of data points from
a beam profile (P), the Gaussian correlation coefficient is calculated
as follows:
Where each data set is composed of points for j = 0, 1, 2, ... N. The
correlation coefficient is derived, from the following steps.
1.
S, the Integration of the squared differences between the two
curves is found:
2.
The deformation at each point from the average, Dj, is then
determined:
6-5
BeamMaster-USB User Manual
3.
Ellipticity
Speed Issues
The fit coefficient, C, is a percentage, defined with the
following formula:
Elliptical measurements are calculated utilizing data from three
blades. The actual calculation is in accordance with standard
formulas for ellipse calculations utilizing three chords.
1.
The major and minor axes of the fit ellipse are calculated by
determining the distance from the centroid to the ellipse.
2.
Orientation (Theta) measures the orientation of the major axes
of the fit. Theta is measured from the positive X-axis and
varies between +90º and -90º.
The motor speed limits the maximum update rate to 5 Hz. The software can acquire data at 5 Hz by starting a Data Collection Log file
when all graphic screens are closed.
When several windows are opened, the system may slow down,
especially when using the 3D feature. High performance computers
can display the data faster. The update rate of a particular computer
is influenced by a variety of factors: CPU speed, computer RAM, the
video card, video ram, screen resolution, screen color depth, and the
specific operating system being used.
6-6
Troubleshooting
SECTION SEVEN: TROUBLESHOOTING
This section lists common problems and probable solutions for the
following error types:
System Errors
•
System errors (this page)
•
Analysis errors (p. 7-2)
System errors are displayed on the right-hand side of the tool bar.
They indicate a problem with the hardware or detector head. When
these errors are displayed, all results are removed from the window.
Low power
This message means that insufficient light is available on the
detector. This error will occur if less than 10 µW of energy is
detected. Verify that the laser light is reaching the sensor. If it
appears that the message is incorrect, treat it as a Hardware Failure
message (explained, next).
Hardware operation failed
A Hardware Operation Failed message indicates that a problem
exists with the USB External Box. One of the following solutions
could resolve this problem.
1.
The USB External Box settings do not match the software
setup parameters—refer to “Installing the USB External Box”
(p. 2-4).
2.
The detector head is not connected, or the cable is loose—see
“Connecting the Detector” (p. 2-3).
3.
There is no measurement taken during 2 to 4 drum rotations.
This might be due to some problem in the head or the USB
External Box electronics.
Power adjusting
This message is normal and can occur when:
1.
There is a sudden change in laser power.
2.
The user has just completed setting the hardware or system
setup parameters.
7-1
BeamMaster-USB User Manual
Laser power exceed limit
This message indicates the detector is collecting an excessive
amount of light. Check the input power level with a power meter to
ensure the device is being used within the recommended operating
limits. With small beams this error can occur below the published
power limit—for a list of published limits, refer to “Section Five:
Hardware” (p. 5-1). If it appears that the message is incorrect, treat
it as a hardware failure—refer to “Hardware operation failed”
(p. 7-1).
Frequency adjusting
This message is normal and can occur when:
1.
There is a sudden change in laser position or size.
2.
The user has just completed setting the hardware or system
setup parameters.
Check detector head
This message displays in one of the following cases:
Analysis Errors
1.
Whenever the measuring head is being connected to the manifold box and the calibration files in use do not match the head.
To correct this error, change the head S/N—refer to “Add
Detector Head” (p. 4-68).
2.
When the measuring head is malfunctioning. If this happens,
contact Coherent—refer to “Obtaining Service” (p. 10-2).
Analysis errors are associated with calculations and data collection.
Small beam display on the Position window
The Position window does not automatically zoom for small beams.
To enable Position Zoom mode, select the Position Setup button and
enable the zoom feature. The zoom function will scale the position
display relative to the current beam diameter.
Power is not correct
•
Check that the correct wavelength is entered into the System
Setup dialog.
•
Make sure the filter installed in the detector head matches the
filter selected in the software.
•
Ensure that the sensor is not saturated—for a list of specifications—refer to “Section Five: Hardware” (p. 5-1).
7-2
Troubleshooting
•
If using a small spot, check the power density levels—see
“Selecting a Filter” (p. 2-3). The relative power reading should
be ± 10% of the actual power level. If an absolute power
reading is required, set up a custom filter file— refer to “Create
Filter File” (p. 4-2). A custom filter file allows the user to enter
a power correction factor. This factor will be multiplied by the
transmission value at the specified wavelength.
Calculation Issues
Refer to “Accuracy” (p. 6-1).
7-3
BeamMaster-USB User Manual
7-4
Head Accessories and Drawings
SECTION EIGHT: HEAD ACCESSORIES AND
DRAWINGS
In this section:
•
BeamMaster-USB rotation mount (this page)
•
Fiber adapter (p. 8-2)
•
C-mount adapter ring (p. 8-2)
BeamMaster-USB
Rotation Mount
Figure 8-1. BeamMaster-USB Rotation Mount
Part number: 1038024
The rotation mount is designed to attach to the 8-32 holes on the
BeamMaster-USB head and provide precise rotation of the head
about the optical axis.
It is sometimes necessary to rotate the BeamMaster-USB head about
the optical axis. Each head is provided with three 8-32 threaded
mounting holes on its rear plate for this purpose.
8-1
BeamMaster-USB User Manual
Fiber Adapter
Figure 8-2. Fiber Adapter
Part number: 33-7154-000
The fiber adapter is provided with an FC connector and is designed
to just fit onto the aperture of the BeamMaster-USB detector head.
The fiber adapter can firmly hold an optical fiber with FC connector
end quite close to the detector knife-edge plane for measurement of
its output beam profile.
C-Mount
Adapter Ring
Figure 8-3. C-Mount Adapter Ring
Part number: 33-7147-000
The C-Mount Adapter Ring is designed to attach to the face of the
BeamMaster-USB detector head. This adapter will accommodate
optical devices utilizing a 1" x 32 thread pattern.
8-2
Windows Control Library
SECTION NINE: WINDOWS CONTROL LIBRARY
In this section:
Overview
•
Overview (this page)
•
GetCorrelation (p. 9-3)
•
GetGaussianWidth (p. 9-4)
•
GetProfileWidth (p. 9-5)
•
ProfileData (p. 9-6)
•
ProfileUnit (p. 9-7)
•
Start (p. 9-8)
•
Stop (p. 9-8)
•
CurrentStatus (p. 9-9)
•
Position (p. 9-9)
•
Power (p. 9-10)
•
ProjectionData (p. 9-10)
•
ProjectionUnit (p. 9-10)
•
Wavelength (p. 9-11)
•
OnErrorMessage (p. 9-11)
•
OnUpdateData (p. 9-11)
•
ErrorStatus (p. 9-12)
The BACtlLib.dll Windows Control Library is a software package
required when writing an application program for the BeamMaster-USB system.
The BACtlLib.dll Windows Control Library contains
easy-to-operate functions and properties that enable measuring
beam parameters and creating your own application under Windows
XP, Windows Vista, or Windows 7 environment. The BACtrlLib.dll
Windows Control Library was written using Microsoft .Net C#.
9-1
BeamMaster-USB User Manual
Description of Files
Windows Control Library is a software tool for managing the
BeamMaster-USB system under the Windows operating system. For
proper operation the Windows Control Library requires the
following files:
•
BACtrlLib.dll: Windows Control Library.
•
Beam USB Control.dll: Additional Windows Control Library
•
BMxxxx.up: Detector calibration file supplied with the
measuring system, where “BMxxxx” refers to the detector
number.
In the sub-directory of examples on the Installation CD, there is an
example of using BACtrlLib Windows Control Library with the C#
programming language.
Description of the BACtrlLib Windows Control Library Functions
•
GetCorrelation: Function returns the correlation coefficient
of the Gaussian
•
GetGaussianWidth: Function returns the width of the
Gaussian at a certain clip level
•
GetProfileWidth: Function returns the width of the profile at
a certain clip level
•
ProfileData: Function returns the measured profile as an array
of points
•
ProfileUnit: Function returns the distance between points in
microns in the measured profile
•
Start: Function to initialize and start the measurement system
•
Stop: Function of stopping the measuring system
Description of the BACtrlLib Windows Control Library Properties
CurrentStatus: Returns the current status of the state measuring
system
Position: Returns the current position of the measured laser beam
Power: Returns the current power of the measured laser beam
ProjectionData: Returns a matrix of two-dimensional reconstruction of the laser beam
ProjectionUnit: Returns the distance (in microns) between points in
the matrix of two-dimensional reconstruction of the laser beam
9-2
Windows Control Library
Wavelength: Sets and returns the wavelength (in nanometers) of the
measured laser beam
Description of BACtrlLib Windows Control Library Events
•
OnErrorMessage: Event notifying change of the status of the
measuring system
•
OnUpdateData: Event notifying the receipt of new data from
the measuring system
Description of BACtrlLib Windows Control Library Enumerations
ErrorStatus: Specifies options for the state of the measuring system
GetCorrelation
Function returns the Gaussian correlation coefficient.
Namespace: BACtrlLib
Assembly: BACtrlLib
Syntax
Visual Basic (Declaration)
Public Function GetCorrelation ( _
uiNumPrf As UInt16 _
) As Double
Visual Basic (Usage)
Dim numProfile As UInt16
Dim corelation As Double
corelation = GetCorrelation(numProfile)
C#
public double GetCorrelation(UInt16 uiNumPrf)
Parameters
uiNumPrf
The number of measured profile.
Remarks
This method is a member of the class BACtrlLib. To be able to apply
to this method and obtain the results of measurements, there is a
need to first create an object of class BACtrlLib and run it with Start
function.
9-3
BeamMaster-USB User Manual
The uiNumPrf parameter corresponds to the serial number of the
knife in the measuring system, starting from 0.
Return Value
This function returns the Gaussian correlation coefficient.
GetGaussianWidth
Function returns (in microns) the width of the Gaussian at a certain
clip level.
Namespace: BACtrlLib
Assembly: BACtrlLib
Syntax
Visual Basic (Declaration)
Public Function GetGaussianWidth( _
uiNumPrf As UInt16 _
fLevel As Single _
) As Double
Visual Basic (Usage)
Dim numProfile As UInt16
Dim width As Double
Dim level As Single
width = GetGaussianWidth(numProfile, level)
C#
public double GetGaussianWidth(UInt16 uiNumPrf, float
fLevel)
Parameters
uiNumPrf
The number of measured profile.
fLevel
The clip level as a percentage of the height profile.
Remarks
This method is a member of the class BACtrlLib. To be able to apply
to this method and obtain the results of measurements, there is a
need to first create an object of class BACtrlLib and run it with Start
function.
The uiNumPrf parameter corresponds to the serial number of the
knife in the measuring system, starting from 0.
9-4
Windows Control Library
The fLevel parameter indicating the percentage clip level at which
the beam width profile is being measured. The values of this parameter may be in the range of 0.0, for the lowest point of the measured
profile and up to the maximum value of 100.0, highest point of the
measured profile.
Return Value
This function returns (in microns) the width of the Gaussian at a
certain clip level.
GetProfileWidth
Function returns (in microns) the width of the profile at a certain
clip level.
Namespace: BACtrlLib
Assembly: BACtrlLib
Syntax
Visual Basic (Declaration)
Public Function GetProfileWidth( _
uiNumPrf As UInt16 _
fLevel As Single _
) As Double
Visual Basic (Usage)
Dim numProfile As UInt16
Dim width As Double
Dim level As Single
width = GetProfileWidth(numProfile, level)
C#
public double GetProfileWidth(UInt16 uiNumPrf, float
fLevel)
Parameters
uiNumPrf
The number of measured profile.
fLevel
The clip level as a percentage of the height profile.
Remarks
This method is a member of the class BACtrlLib. To be able to apply
to this method and obtain the results of measurements, there is a
need to first create an object of class BACtrlLib and run it with the
Start function.
9-5
BeamMaster-USB User Manual
The uiNumPrf parameter corresponds to the serial number of the
knife in the measuring system starting from 0.
The fLevel parameter indicates the percentage clip level at which the
beam width profile is measured. The values of this parameter may
be in the range of 0.0, for the lowest point of the measured profile,
and up to the maximum value of to 100.0, highest point of the
measured profile.
Return Value
This function returns (in microns) the width of the profile at a certain
clip level.
ProfileData
Function returns the measured profile as an array of points.
Namespace: BACtrlLib
Assembly: BACtrlLib
Syntax
Visual Basic (Declaration)
Public Function ProfileData( _
uiNumPrf As UInt16 _
) As Single()
Visual Basic (Usage)
Dim numProfile As UInt16
Dim profile() As Single
profile = ProfileData(numProfile)
C#
public Single[] ProfileData(UInt16 uiNumPrf)
Parameters
uiNumPrf
The number of measured profile.
Remarks
This method is a member of the class BACtrlLib. In order to be able
to apply to this method and obtain the results of measurements, there
is a need to first create an object of class BACtrlLib and run it with
the Start function.
The uiNumPrf parameter corresponds to the serial number of the
knife in the measuring system starting from 0.
9-6
Windows Control Library
Each array element represents a percentage of the maximum height
profile and presented in a range from 0 to 100.
To obtain the actual distance in microns between the points in the
resulting profile use the ProfileUnit function.
Return Value
This function returns the measured profile as an array of points.
ProfileUnit
Function returns the distance between points (in microns) in the
measured profile.
Namespace: BACtrlLib
Assembly: BACtrlLib
Syntax
Visual Basic (Declaration)
Public Function ProfileUnit( _
uiNumPrf As UInt16 _
) As Double
Visual Basic (Usage)
Dim numProfile As UInt16
Dim profileunit As Double
profileunit = ProfileUnit(numProfile)
C#
public double ProfileUnit(UInt16 uiNumPrf, )
Parameters
uiNumPrf
The number of measured profile.
Remarks
This method is a member of the class BACtrlLib. In order to be able
to apply to this method and obtain the results of measurements, there
is a need to first create an object of class BACtrlLib and run it with
function Start.
The uiNumPrf parameter corresponds to the serial number of the
knife in the measuring system starting from 0.
Return Value
This function returns the real distance (in microns) between points
in the array profile obtained function ProfileData.
9-7
BeamMaster-USB User Manual
Start
Function to initialize and start the measurement system.
Namespace: BACtrlLib
Assembly: BACtrlLib
Syntax
Visual Basic (Declaration)
Public Function Start( _
strFileName As String_
) As BACtrlLib.BACtrlLib.ErrorStatus
Visual Basic (Usage)
Dim numProfile As String
Dim errStatus As BACtrlLib.BACtrlLib.ErrorStatus
errStatus = Start(numProfile)
C#
public
BACtrlLib.BACtrlLib.ErrorStatus
strFileName)
Start(String
Parameters
strFileName
The path in which the file resides BMxxxx.up.
Remarks
This method starts the measuring system and makes it automatic
configuration of the necessary mode for measuring data. For the
termination of the work and stop the measuring device, use the Stop
function.
BAxxxx.up file is a calibration file of measuring detector and comes
with the measuring system. Where “BMxxxx” = the detector
number.
Return Value
This function returns one of the states described in ErrorStatus.
Stop
Function of stopping the measuring system.
Namespace: BACtrlLib
Assembly: BACtrlLib
Syntax
Visual Basic (Declaration)
Public Sub Stop()
9-8
Windows Control Library
C#
public void Stop()
Remarks
This function terminates the measuring process and turns off the
measuring system which was started by the Start function.
CurrentStatus
Property returns the current status of the measuring system.
Namespace: BACtrlLib
Assembly: BACtrlLib
Syntax
Visual Basic (Declaration)
Public
Property
CurrentStatus()
BACtrlLib.BACtrlLib.ErrorStatus
As
C#
public BACtrlLib.BACtrlLib.ErrorStatus CurrentStatus
Remarks
This property returns the current state of the measuring system,
which is the state of one of the ErrorStatus.
Return Value
This function returns one of the states described in ErrorStatus.
Position
Property returns the current position of the measured laser beam.
Namespace: BACtrlLib
Assembly: BACtrlLib
Syntax
Visual Basic (Declaration)
Public Property Position() As PointF
C#
public PointF Position
Return Value
This property returns (in microns) the current position of the
measured laser beam.
9-9
BeamMaster-USB User Manual
Power
Property returns the current power measured laser beam.
Namespace: BACtrlLib
Assembly: BACtrlLib
Syntax
Visual Basic (Declaration)
Public Property Power() As Single
C#
public Single Power
Return Value
This property returns (in mW) the current power of the measured
laser beam.
ProjectionData
Property returns a matrix of two-dimensional reconstruction of the
laser beam.
Namespace: BACtrlLib
Assembly: BACtrlLib
Syntax
Visual Basic (Declaration)
Public Property ProjectionData() As UInt16(,)
C#
public UInt16[][] ProjectionData
Return Value
This property returns a matrix of two-dimensional reconstruction of
the laser beam.
To obtain the actual distance in microns between the points in the
resulting matrix, use the ProjectionUnit function.
ProjectionUnit
Property returns the distance (in microns) between points in the
matrix of two-dimensional reconstruction of the laser beam.
Namespace: BACtrlLib
Assembly: BACtrlLib
Syntax
Visual Basic (Declaration)
9 - 10
Windows Control Library
Public Property ProjectionUnit() As Double
C#
public double ProjectionUnit
Return Value
This property returns the distance (in microns) between points in the
matrix of two-dimensional reconstruction of the laser beam,
obtained by the ProjectionData function.
Wavelength
Property sets and returns the wavelength (in nanometers) of the
measured laser beam.
Namespace: BACtrlLib
Assembly: BACtrlLib
Syntax
Visual Basic (Declaration)
Public Property Wavelength() As Double
C#
public double Wavelength
Return Value
This property returns the wavelength (in nanometers) of the
measured laser beam.
OnErrorMessage
Event notifying a change of status of the measuring system.
Namespace: BACtrlLib
Assembly: BACtrlLib
Syntax
Visual Basic (Declaration)
Public Event OnErrorMessage As ErrorMessage
C#
public event ErrorMessage OnErrorMessage
OnUpdateData
Event notifying the receipt of new data from the measuring system.
Namespace: BACtrlLib
Assembly: BACtrlLib
Syntax
Visual Basic (Declaration)
9 - 11
BeamMaster-USB User Manual
Public Event OnUpdateData As UpdateData
C#
public event UpdateData OnUpdateData
ErrorStatus
Specifies options for the state of the measuring system.
Namespace: BACtrlLib
Assembly: BACtrlLib
Syntax
Visual Basic (Declaration)
Public Enumerator ErrorStatus
C#
public enum ErrorStatus
Members
Table 9-1. Error Status Table
Member Name
Description
BA_OK
The measuring system is functioning properly.
BA_INMEASURE
Optional (Not used)
BA_MEASURED
Optional (Not used)
BA_INMOVE
Optional (Not used)
BA_MOVEEND
Optional (Not used)
BA_POWERADJUSTING
The measuring system is able to configure power.
BA_ADJUSTING
The measuring system is able to set the frequency.
BA_HARDFAILURE
Measuring system not functioning correctly.
BA_WRONGPARAMETERS Optional (Not used)
BA_LOWMEMORY
Optional (Not used)
BA_TOOHIGHPOWER
Power of the laser beam more than the permissible measuring system.
BA_TOOLOWPOWER
The laser beam is less than the permissible measuring system.
BA_DARKPOWER
The measuring system is able to measure dark power.
BA_PROFILELOST
Optional (Not used)
BA_NOTOPENED
Optional (Not used)
BA_NOTIMER
Optional (Not used)
BA_WRONGMODE
Optional (Not used)
BA_SETUPNOTFOUND
Setup file from the function Start can't be opened.
BA_SETUPWRONG
Setup file is not a valid.
BA_NOTMEASURED
Optional (Not used)
BA_TOOMANYPROFILES
Optional (Not used)
BA_IRQERROR
Optional (Not used)
BA_NOTOPENEDCOEFF
Optional (Not used)
9 - 12
Warranty and Service
SECTION TEN: WARRANTY AND SERVICE
In this section:
Warranty
•
Warranty (this page)
•
Obtaining service (p. 10-2)
•
Product shipping instructions (p. 10-3)
Coherent, Inc. makes no expressed or implied warranties that functions and features of the BeamMaster-USB will meet the purchaser's
requirements for automated testing and beam diagnostics, or any
other application, or that the program operations will be uninterrupted or error- free. The foregoing warranties are in lieu of all other
warranties, expressed or implied, including, but not limited to, the
implied warranties of merchantability and fitness for a particular
purpose. Coherent does warrant that the hardware be free of defects
in materials and workmanship under normal use for a period of one
year from the date of delivery to the customer and evidenced by a
copy of the invoice.
In no event will Coherent, Inc. be liable for any damages, including
any lost profits, lost savings or other incidental or consequential
damages arising out of the use or inability to use the BeamMaster-USB, even if Coherent has been advised of the possibility of
such damages, or for any claim by any other party. The risk in the
use of the BeamMaster-USB lies entirely with the purchaser.
Any unauthorized duplication and/or dissemination of Coherent's
program material or associated support documentation, is prohibited
by law.
10 - 1
BeamMaster-USB User Manual
Obtaining
Service
In order to obtain service under this warranty, Customer must notify
the Company of the defect before the expiration of the warranty
period and make suitable arrangements for the performance of
service. The Company shall, in its sole discretion, determine
whether to perform warranty service at the Customer's facility, at the
Company's facility or at an authorized repair station.
If Customer is directed by the Company to ship the product to the
Company or a repair station, Customer shall package the product (to
protect from damage during shipping) and ship it to the address
specified by the Company, shipping prepaid. The customer shall pay
the cost of shipping the Product back to the Customer in conjunction
with annual recalibration and repair; the Company shall pay the cost
of shipping the Product back to the Customer in conjunction with
product failures within the first twelve months of time of sale or
between annual recalibrations.
A Returned Material Authorization number (RMA) assigned by the
Company must be included on the outside of all shipping packages
and containers. Items returned without an RMA number are subject
to return to the sender.
For the latest Customer Service information, refer to our website:
www.Coherent.com.
Detailed instructions on how to prepare a product for shipping are
shown under “Product Shipping Instructions” (p. 10-3).
Table 10-1. Coherent Service Centers
Location
Phone
Fax
E-Mail
USA
1.800.343.4912
503.454.5777
info_service@Coherent.com
Europe
International
+49-6071-968-0 +49-6071-968-499 info_service@Coherent.com
503.454.5700
10 - 2
503.454.5777
info_service@Coherent.com
Warranty and Service
Product
Shipping
Instructions
To prepare the product for shipping to Coherent:
1.
Contact Coherent Customer Service—refer to Table 10-1,
“Coherent Service Centers,” on page 2 for contact information.
2.
Attach a tag to the product that includes the name and address
of the owner, the person to contact, the serial number, and the
RMA number you received from Coherent Customer Service.
3.
Wrap the product with polyethylene sheeting or equivalent
material.
4.
If the original packing material and carton are not available,
obtain a corrugated cardboard shipping carton with inside
dimensions that are at least 15 cm (6 in.) taller, wider, and
deeper than the product. The shipping carton must be
constructed of cardboard with a minimum of 170 kg (375 lb.)
test strength. Cushion the instrument in the shipping carton
with packing material or urethane foam on all sides between
the carton and the product. Allow 7.5 cm (3 in.) on all sides,
top, and bottom.
5.
Seal the shipping carton with shipping tape or an industrial
stapler.
6.
Ship the product to:
Coherent, Inc.
27650 SW 95th Ave.
Wilsonville, OR 97070
Attn: RMA # (add the RMA number you received from
Coherent Customer Service)
10 - 3
BeamMaster-USB User Manual
10 - 4
Index
INDEX
A
About box 4-72
Accuracy 6-1
Active window 4-71
Adapter ring, C-mount 8-2
Adapter, fiber 8-2
Add detector head 4-68
Analysis errors 7-2
Area, window 3-3
Arranging windows 3-4
B
Background noise 6-2
Bar
Status 3-4
View status 3-5
Beam centroid location 6-3
Beam width 6-3
BeamMaster-USB
and beam diagnostics 1-5
Rotation mount 8-1
BM-3 InGaAs detector head 5-2
BM-3 silicon-UV detector head 5-3
BM-7 InGaAs detector head 5-4
BM-7 silicon-UV detector head 5-5
Box
About 4-72
Check 3-7
Value entry 3-8
Boxes, dialog 3-6
Button
Gaussian 4-32
Profile setup 4-33
Profile zoom 4-32
Radio 3-8
Buttons
Inactive tool 3-2
Toggle tool 3-3
Tool bar 3-2
C
Care and handling
Detector head 2-2
Filters 2-2
CCD array camera diagnostics
Chart window 4-48
Check box 3-7
Close all windows 4-61
Closing a menu 3-5
1-5
C-mount adapter ring 8-2
Coherent on the web function 4-72
Color
Option 3-9
Selecting 3-9
Command, tool bar 3-3
Configuration file
Load 4-54
Save 4-55
Configuring the software 2-9
Connecting the detector 2-3
Contents function 4-71
Create filter file 4-2
CurrentStatus function 9-9
Custom filters and power calibration 2-4
D
Data entry, methods 3-7
Data, user 4-61
Date and time 3-3
Detector head
Add 4-68
BM-3 InGaAs 5-2
BM-3 silicon-UV 5-3
BM-7 InGaAs 5-4
BM-7 silicon-UV 5-5
Detector, connecting 2-3
Dialog boxes 3-6
Dimensions and distances, hardware
E
Ellipticity 6-6
ENTER Key 3-6
Errors
Analysis 7-2
System 3-3, 7-1
ErrorStatus function 9-12
ESC key 3-6
Exit 4-21
Save settings on 4-61
External box
Installing 2-4
USB 5-6
F
Fiber adapter 8-2
File
Menu 4-1
View 4-2
Filter file, create 4-2
Index - 1
5-1
BeamMaster-USB User Manual
L
Filter, selecting 2-3
Filters, installing 2-4
Focused spot 2-4
Function
Coherent on the web 4-72
Contents 4-71
CurrentStatus 9-9
ErrorStatus 9-12
Exit 4-21
GetCorrelation 9-3
GetGaussianWidth 9-4
GetProfileWidth 9-5
OnErrorMessage 9-11
OnUpdateData 9-11
Position 9-9
Power 9-10
ProfileData 9-6
ProfileUnit 9-7
ProjectionData 9-10
ProjectionUnit 9-10
Start 9-8
Stop 9-8
Wavelength 9-11
Library, windows control 9-1
Link
Setup 4-13
Start 4-11
Load configuration file 4-54
Log
Setup 4-9
start 4-9
stop 4-9
M
G
Gaussian
Button 4-32
Correlation coefficient 6-5
Gaussian fit 6-4
Diameter 6-5
GetCorrelation function 9-3
GetGaussianWidth function 9-4
GetProfileWidth function 9-5
H
Hardware
Dimensions and distances
Installation 2-1
Help 3-5
Help menu 4-70
Hide the tool bar 3-3
5-1
K
Key
ENTER 3-6
ESC 3-6
TAB 3-6
Keyboard operation
3-5
4-12
N
Null-modem cable, making a
4-12
O
OnErrorMessage function 9-11
OnUpdateData function 9-11
Operation, keyboard 3-5
Option, color 3-9
Options menu 4-53
P
I
Inactive tool buttons 3-2
Installing
Filters 2-4
Software 2-3
USB external box 2-4
Instructions, product shipping
Making a null-modem cable
Menu
Bar 3-2
Closing 3-5
File 4-1
Help 4-70
Options 4-53
Selecting 3-2
System 4-61
View 4-22
Windows 4-69
Menu item, selecting 3-5
Methods of data entry 3-7
Mode
Server 4-60
Slave 4-21
Step 4-59
10-3
Page setup 4-8
Panels, status bar 3-4
Plot window 4-44
Position
Function 9-9
Window 4-36
Power
Function 9-10
Relative total 6-2
Window 4-22
Preface -ix
Print 4-4
Screen 4-7
Window 4-6
Product shipping instructions
Profile
Index - 2
10-3
Index
Status bar 3-4
Panels 3-4
View 4-52
Step mode 4-59
Stop function 9-8
System
Contents 1-1
Errors 3-3, 7-1
Menu 4-61
Requirements 2-3
Setup 4-62
Setup button 4-33
V window 4-31
W window 4-35
Zoom button 4-32
ProfileData function 9-6
ProfileUnit function 9-7
Projection window 4-39
ProjectionData function 9-10
ProjectionUnit function 9-10
Publication updates six
R
Radio button 3-8
Relative total power 6-2
Rotation mount, BeamMaster-USB
Running the software 2-7
S
Save
Configuration file 4-55
Image as 4-55
Settings on exit 4-61
Snapshot 4-56
Saving data in text file 4-57
Scanning aperture diagnostics 1-5
Screen, print 4-7
Search for help on function
Function
Search for help on 4-71
Selecting
Color 3-9
Filter 2-3
Menu 3-2
Menu item 3-5
Server mode 4-60
Service, obtaining 10-2
Setup
Link 4-13
Page 4-8
System 4-62
Signal words and symbols ix
Slave mode 4-21
Snapshot
Save 4-56
View 4-56
Software
Configuring 2-9
Installing 2-3
Running 2-7
Speed issues 6-6
Spot, focused 2-4
Start
Function 9-8
Link 4-11
Test 4-57
Start/stop log 4-9
T
8-1
TAB key 3-6
Text file, saving data in 4-57
Theory of operation 1-3
Title bar 3-1
Toggle tool buttons 3-3
Tool bar 3-2
Buttons 3-2
Command 3-3
Hide 3-3
View 4-52
U
U.S. export control laws compliance
USB external box 5-6
User data 4-61
V
Value entry box 3-8
View
File 4-2
Menu 4-22
Snapshot 4-56
Status bar 3-5, 4-52
Tool bar 4-52
W
Warranty 10-1
Wavelength function 9-11
Width, beam 6-3
Window
Active 4-71
Area 3-3
Chart 4-48
Plot 4-44
Position 4-36
Power 4-22
Print 4-6
Profile v 4-31
Profile w 4-35
Projection 4-39
Windows
Arranging 3-4
Close all 4-61
Control library 9-1
Index - 3
ix
BeamMaster-USB User Manual
Menu
4-69
Index - 4
BeamMaster™-USB User Manual
©Coherent, Inc., 7/2012, printed in the USA
Part No. 1231448 Rev. AA