THORLABS KPA101 Manuel utilisateur
KPA101
Beam Position Aligner
Kinesis User Guide
Original Instructions
2 HA0373T Rev Ck May 2017
Contents
Chapter 1 Safety ............................................................................................ 4
1.1 Safety Information .................................................................................. 4
1.2 General Warnings .................................................................................. 4
Chapter 2 Overview and Setup ..................................................................... 5
2.1 Introduction ............................................................................................. 5
2.2 Power Options ........................................................................................ 6
2.3 Kinesis Software Overview ..................................................................... 7
Chapter 3 Initial Installation ........................................................................10
3.1 Install The Software .............................................................................. 10
3.2 Mechanical Installation ......................................................................... 11
3.3 Electrical Installation ............................................................................. 12
Chapter 4 Getting Started - Basic Operation ............................................ 16
4.1 Introduction ........................................................................................... 16
4.1.1 Overview - Typical System Example ............................................................... 16
4.2 Detector Head Descriptions ................................................................. 17
4.2.1 PDQ80A and PDQ30C Quadrant Detector Heads ........................................... 17
4.2.2 PDP90A Lateral Effect Sensor ......................................................................... 17
4.2.3 Use of the Sum and Difference Signals for Alignment ..................................... 18
4.2.4 A Note About Bipolar Voltage Outputs ............................................................. 19
4.2.5 Beam Size Considerations ............................................................................... 19
4.2.6 Sensor Data Precision ...................................................................................... 20
4.2.7 Temperature Considerations ............................................................................ 20
4.3 Control Panel Buttons and Indicators .................................................. 21
4.3.1 Digital Display - Operating Mode ...................................................................... 22
4.4 Settings Menu ...................................................................................... 23
4.4.1 Menu Overview ................................................................................................ 23
4.4.2 Menu Option - Control Mode ............................................................................ 23
4.4.3 Menu Option - Brightness ................................................................................. 24
4.5 Operating Modes .................................................................................. 25
4.5.1 Monitor Mode ................................................................................................... 25
4.5.2 Open Loop Mode .............................................................................................. 26
4.5.3 Closed Loop Mode ........................................................................................... 27
4.5.4 Automatic Open Loop/Closed Loop Switching ................................................. 27
4.6 Basic Application Example ................................................................... 30
4.6.1 Introduction ....................................................................................................... 30
4.6.2 Wiring and Initial Set Up ................................................................................... 30
4.6.3 Basic Operation ................................................................................................ 31
4.6.4 Signs of Instability ............................................................................................ 33
4.6.5 Troubleshooting ................................................................................................ 33
4.6.6 Using the Target Display .................................................................................. 34
Continued...
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K-Cube Position Aligner
Chapter 5 PC Operation - Tutorial .............................................................. 36
5.1 Introduction ...........................................................................................36
5.2 Using the Kinesis Software ...................................................................36
5.3 Building An Auto-alignment System - PC Operation ............................38
5.3.1 Introduction ...................................................................................................... 38
5.3.2 Wiring and Software Settings for Hub Operation ............................................. 39
5.3.3 Hub Mounting Options ..................................................................................... 42
5.3.4 Wiring and Software Settings - Off Hub Operation .......................................... 42
5.3.5 Basic Operation ............................................................................................... 44
5.3.6 Signs Of Instability ........................................................................................... 48
5.3.7 Troubleshooting ............................................................................................... 49
5.4 Setting Sequences ...............................................................................49
5.5 Changing and Saving Parameter Settings ...........................................49
Chapter 6 Software Reference .................................................................... 50
6.1 GUI Panel .............................................................................................50
6.2 Settings Panel ......................................................................................53
6.2.1 Persisting Settings to the Hardware ................................................................. 53
6.2.2 Control Settings Tab ........................................................................................ 54
6.2.3 Display Tab ...................................................................................................... 58
6.2.4 TriggerTab ....................................................................................................... 60
Appendices
Appendix A Connector Pinout Details ....................................................... 63
Appendix B PID Tutorial ............................................................................. 65
Appendix C Preventive Maintenance ......................................................... 66
Appendix D Specifications and Associated Parts .................................... 67
Appendix E Regulatory ................................................................................ 68
Appendix F Thorlabs Worldwide Contacts ................................................ 71
4
Chapter 1 Safety
1.1 Safety Information
For the continuing safety of the operators of this equipment, and the protection of the
equipment itself, the operator should take note of the Warnings, Cautions and Notes
throughout this handbook and, where visible, on the product itself.
The following safety symbo ls may be u sed throughout the h andbook and on the
equipment itself.
1.2 General Warnings
Shock Warning
Given when there is a risk of injury from electrical shock.
Warning
Given when there is a risk of injury to users.
Caution
Given when there is a risk of damage to the product.
Note
Clarification of an instruction or additional information.
Warnings
If this equipment is used in a manner not specified by the manufacturer, the
protection provided by the equipment may be impaired. In particular,
excessive moisture may impair operation.
Spillage of fluid, such as sample solutions, should be avoided. If spillage does
occur, clean up immediately using absorbant tissue. Do not allow spilled fluid
to enter the internal mechanism.
Stable, closed loop operation can only be achieved with continuous wave
(CW) lasers. This product is not recommended for use with Pulsed Lasers.
5
Chapter 2 Overview and Setup
2.1 Introduction
The KPA101 beam position aligner K-Cube is designed to work with the Thorla bs
PDP and PDQ series detector heads. As a member of the K-Cube family of controllers
this unit ben efits from a unifie d ActiveX software interface, USB conn ectivity, very
compact footprint and co mpatibility with the K-Cube Hub System. It is particula rly
useful in laser beam alignment, position monitoring and beam stabilization
applications.
The detector head outputs signals that sense the position and intensity of the light
beam hitting the photo detector array. The KPA101 allows monitoring of these signals
and gives a visual indication of the position of the beam, both via the top panel display
and the software Graphical User Interface (GUI).
The unit features three main operating modes - Monitor, Open loop and Closed loop.
In Monitor mode, the unit outputs the XDiff, YDiff and Sum signals from the detector
array for use in a monitoring application. In open loop the XOut and YOut position
demand output signals can be turned off, to allow the mirrors to be posi tioned
manually.
This position aligner K-Cube also benefits from a closed loop mode. In closed loop
operation the unit can be configured to drive out a pair of position demand analog
signals. In typical applications these signals can be used to control the positioning of
a motorized or piezo driven turning mirror in an optical system. The DSP proc essor
within the unit runs two independent feedback loops, one for each axis of the detector
head. These feedback loops attempt to zero out the X and Y difference signals by
manipulating the position of the turning mirror to centre the beam on the quad detector
head. Full PID parametisation of these feedback loops allow the system to be tuned
to a wid e variety of beam alignment applications. Furthermore, it is p ossible to
configure 2 KPZ101 piezo K-Cubes as
slave amplifiers in order to drive piezo products
such as the KC1-PZ mirror mount and PGM100 piezo gimbal mount.
Fig. 2.1 K-Cube position aligner (shown without base plate fitted)
6 HA0373T Rev Ck May 2017
Chapter 2
For convenience the footprint of this unit has been kept to a minimum, measuring only
60mm x 60mm x 47mm (2.4” x 2.4” x 1.8”) and with the facility to directly mount to the
optical table close to the device under control. Table top operation also allows minimal
drive cable lengths for easier cable management. All controls are located on the top
face of the unit – very useful when manually adjusting devices and monitoring the
positions via the easy to interpret ‘Target’ display.
USB connectivity provides easy 'Plug and Play' PC controll ed operation - multiple
units can be connected to a single PC via standard USB hub technology or by using
the K-Cube Controller Hub for mul ti-axis motion control applications. Coupling this
with the user friend ly Kinesis™ software (supplied) allows the user to ge t up and
running in a short space of time. Advanced custom motion control applications and
sequences are also possible using the extensive ActiveX® programming environment
also supplied. This programming library is compatible with many development tools
such as LabView, V isual Basic, Visual C++, C++ Builder, LabWindows/CVI, and
Delphi.
2.2 Power Options
For power, a compact two-way power supply unit (TPS002) is available from Thorlabs
allowing up to 2 K-Cube Piezo Drivers to be powered from a single mains outlet. This
power supply unit is also designed to take up minimal space and can be mounted to
the optical table in close proximity to the driver units, connected via short power leads.
As a further level of convenience when using the new K-Cube Controllers Thorlabs
also offers th e 3-channel and 6 -channel K-Cube Controller Hubs (KCH301 and
KCH601). These products have been designed specifically with multipl e K-Cube
operation in mind in orde r to simplify issues such as cabl e management, power
supply routing, multiple USB device communications and different op tical table
mounting scenarios.
The K-Cube Controller Hub comprises a slim base-plate type carrier with electrical
connections located on the upper surface to accept the K-Cubes.
Internally the Controller Hub contains a fully compliant USB 2.0 hub circuit to provide
communications for all K-Cubes – a single USB connection to the Controller Hub is
all that is required for PC control. The Controller Hub also provides power distribution
for the K-Cubes, requiring only a single power connection.
Important Note
For convenience and consistency, all system descriptions and examples
throughout this manual assume that the KPA101 is used with a pair of KPZ101
K-Cube Piezo Controllers. It is also possible to use the MDT693B or BPC303
controllers, or a 3rd party piezo amplifier, or even a non-piezo actuated
positioning element, as long as they have suitable low voltage external control
inputs and a manual adjustment facility.
7
K-Cube Position Aligner
2.3 Kinesis Software Overview
2.3.1 Introduction
The K-Cube range of controllers share many of the benefits. These include USB
connectivity (allowing multiple units to be used together on a single PC), fully featured
Graphical User Interface (GUI) panels, and extensive software function libraries for
custom application development.
The Kinesis software suite provides a flexible and powerful PC based control system
both for users of the equipment, and software programmers aiming to automate its
operation.
The User Interface allows full control of all settings and operating modes enabling
complete ‘out-of-box’ operation without the need to de velop any further custom
software. It provides all of the necessary system software services such as generation
of GUI panels, communications handling for multiple USB units, and logging of all
system activity to assist in hardware trouble shooting. The Kinesis server is also used
by software d evelopers to allow the creation of advanced automated positioning
applications very rapidly and with great ease. The server is described in more detail
in the following section.
2.3.2 Kinesis Server
Kinesis controls are re-usab le compiled software compo nents that supply both a
graphical user interface an d a p rogrammable interface. Many such Controls a re
available for Windows applications development, providing a large range of re-usable
functionality. For example, there are C ontrols available that can be used to
manipulate image files, connect to the in ternet or si mply provide user interface
components such as buttons and list boxes.
With the Kinesis system, .Net Controls are deployed to allow direct control over (and
also reflect the status of) the range of electronic controller units, including the Piezo
K-Cube. Software applications that use .Net Controls are often referred to as 'client
applications'. A .Net Co ntrol is a l anguage independent software component.
Consequently the controls can be i ncorporated into a wide range of softwa re
development environments for use b y client application developers. Development
environments supported include Visual Basic, Labview, Visual C++, C++ Builder,
HPVEE, VB.NET, C#.NET
and, via VBA, Microsoft Office applications such as Excel
and Word.
8 HA0373T Rev Ck May 2017
Chapter 2
Consider the Control supplied for a KPA101 position aligner (one panel is displayed
for each controller).
This Control provides a complete user graphical instrument panel to allow the unit to
be manually operated, as well as a comple te set of software functions (often called
methods) to allow all parameters to be set and control operations to be automated by
a client application. The instrument panel reflects the current ope rating state of the
position aligner unit to which it is asso ciated (e.g. such as be am position and SUM
value). Updates to the panel take place automatically when a user (client) application
is making software calls into the same Control. For exampl e, if a client application
instructs the associated Quad Detector Control to centralize the laser beam within the
quad detector photodiode array, progress is monitored automatically by changing
position on the spot display, without the need for further programming intervention.
The Kinesis software provides a rich set of graphical user panels and programmable
interfaces allowing users and client application developers to interact seamlessly with
9
K-Cube Position Aligner
the hardware. Each of the co ntrollers has an associated GUI Control and these are
described fully in the handbook for the associated controller.
Fig. 2.2 System Architecture Diagram
Refer to the main Kinesis Soft ware online help file, for a co mplete programmers
guide. This is available either by pressing the F1 key when running the Kinesis server,
or via the Start menu, Start\Programs\Thorlabs\Kinesis\Kinesis Help.
2.3.3 Software Upgrades
Thorlabs operate a policy of continuous product development and may issue software
upgrades as necessary. The latest software can be downloaded from the ‘services’
section of www.thorlabs.com.
10
Chapter 3 Initial Installation
3.1 Install The Software
DO NOT CONNECT THE CONTROLLER TO YOUR PC YET
1) Go to Services/Down loads at www.thorlabs.com and do wnload the Kin esis
software.
2) Run the .exe file and follow the on-screen instructions.
Note
This section is applicable only if the K-Cube is to be used with a PC. If your
application consists only of local operation via the K-Cube front face, proceed
to Section 3.2.
When operating via a PC, direct user interaction with the unit is accomplished
through intuitive graphical user interface panels (GUIs), which expose all key
operating parameters and modes. The user can select multiple panel views
displaying different information about a particular hardware unit. The
multitasking architecture ensures that the graphical control panels always
remain live, showing all current hardware activity.
Caution
Some PCs may have been configured to restrict the users ability to load
software, and on these systems the software may not install/run. If you
are in any doubt about your rights to install/run software, please consult
your system administrator before attempting to install.
If you experience any problems when installing software, contact
Thorlabs on
+44 (0)1353 654440 and ask for Technical Support.
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