TEM PSD Reader Manual de usuario

PSD Reader User Manual

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User Manual

PSD Reader

Manual Version 1.7

TEM Messtechnik GmbH

Grosser Hillen 38

D-30559 Hannover

Germany

Tel: +49 (0)511 51 08 96 -30

Fax: +49 (0)511 51 08 96 -38

E-mail: [email protected]

URL: http://www.TEM-Messtechnik.de

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Table of Contents

1Introduction .................................................................................................................... 4

2Block Diagram PSD Reader........................................................................................... 4

3Description of the Front Panel Elements ........................................................................ 5

3.1 RS232 Version (optional) ........................................................................................ 5

3.2 RS422 Version (optional) ........................................................................................ 6

3.3 Version with DAC output (optional).......................................................................... 6

4Connection of the PSD Reader ...................................................................................... 7

4.1 Aligna Con (optional)............................................................................................... 7

4.2 PSD Reader with DAC (optional)............................................................................. 8

5Software Installation....................................................................................................... 8

5.1 Installing the Kangoo Software................................................................................ 8

5.2 Installing USB driver...............................................................................................10

6Upgrading the Firmware................................................................................................10

7Interfacing with a PC.....................................................................................................11

7.1 Variables................................................................................................................11

7.2 Commands.............................................................................................................14

8Using the Kangoo Software...........................................................................................15

8.1 Basic Kangoo Features..........................................................................................15

8.1.1 Buttons and Devices .......................................................................................15

8.1.2 Sections..........................................................................................................16

8.1.3 Further Kangoo Functions...............................................................................16

8.2Kangoo Configuration “CrossHair 4D” ....................................................................17

8.3 Pulsed Lasers ........................................................................................................18

8.4 Automatic Pointing data output...............................................................................20

8.5 Optional: DAC output .............................................................................................20

9Delivery Content............................................................................................................20

10 Pinout........................................................................................................................21

10.1 RJ45 for RS422 (optional)......................................................................................21

10.2 SUB-D 9 for RS232 (optional) ................................................................................21

10.3 DAC output (optional).............................................................................................22

11 Electrical Specification...............................................................................................22

11.1 Environmental Conditions.......................................................................................22

11.2 PSD Reader Device...............................................................................................22

11.3 USB COM Interface................................................................................................22

11.4 RS232 or RS422 Interface (optional)......................................................................22

11.5 Mains Power Connection........................................................................................22

12 Customer Service......................................................................................................23

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PSD Reader User Manual

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1 Introduction

The PSD Reader from TEM Messtechnik is a multi-purpose device for measuring physical

values (optical power, voltage, current) and display them on a PC. In standard application the

sensor is a PSD4Dc (or derivatives like PSD2D or PSDe) and the device displays the four

degrees of freedom of a laser´s beam pointing (angle phi and theta, position x and y, or just

two degrees of freedom in case of using a PSD2D).

In customized applications the device is able to act as a digital regulator which measures a

value, compares it to a setpoint and provides an output to feed it to an actuator.

Since the signal processing is exclusively done by a microcontroller, the PSD Reader device

shows great flexibility. All important parameters and settings are accessible by interfacing the

device with a PC, either using the dedicated program Kangoo or user-supplied software

2 Block Diagram PSD Reader

At the heart of the PSD Reader device lies a microcontroller, which handles all

communications over the USB interface and over the I2C or SPI bus. For reading input

signals or acquiring data, the PSD Reader is equipped with an 8-channel, 16-bit ADC with an

input range of +/-10V.

Figure 1 Block diagram, optional components shown semi-transparent

The standard configuration of the PSD Reader electronics features one 8-channel input

connector for feeding in PSD- or photodiode-signals.

Optionally the controller can do signal processing, such as the implementation of PID-

regulators, the generation of control signals for micro-stepper motors or digital filtering.

Optional signal output is provided by a 4-channel, 16-bit digital-to-analog converter (DAC).

The output range of this DAC is +/-10V.

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3 Description of the Front Panel Elements

Figure 2 Top view of the PSD Reader

Table 1 Function of the front panel elements

PSD input

HD-15 connector: PSD input, I2C, SPI, supply voltages

Power plug

Input for coaxial power connector (5,5/2,5 mm)

Status LED

LED indicator for intensity status:

Slow “breathing”: intensity OK

Fast “breathing”: intensity too high or too low

USB port

USB port for the connection to a PC and the Kangoo software

Prog Key

Hold key and switching on power supply: Enter program mode

In normal use: Perform Autogain

3.1 RS232 Version (optional)

Figure 3 Top view of the PSD Reader

Table 2 Function of the front panel elements

RS232 port

SUB-D 9 Connector for the communication via RS232 to a PC

and the Kangoo software

PSD input

HD-15 connector: PSD input, I2C, SPI, supply voltages

Power plug

Input for coaxial power connector (5,5/2,5 mm)

Status LED

LED indicator for microcontroller activity

USB port

USB port for flashing the microcontroller

Prog Key

Hold key and switching on power supply: Enter program mode

In normal use: Perform Autogain

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3.2 RS422 Version (optional)

Figure 4 Top view of the PSD Reader

Table 3 Function of the front panel elements

RS422 port

RJ45 Connector for the communication via RS422 to a PC and

the Kangoo software

PSD input

HD-15 connector: PSD input, I2C, SPI, supply voltages

Power plug

Input for coaxial power connector (5,5/2,5 mm)

Status LED

LED indicator for microcontroller activity

USB port

USB port for flashing the microcontroller

Prog Key

Hold key and switching on power supply: Enter program mode

In normal use: Perform Autogain

3.3 Version with DAC output (optional)

Figure 5 Top view of the PSD Reader

Table 4 Function of the front panel elements

DAC output

HD-15 connector: Pointing and trigger signals output

Pin1: DacA, Pin2, DacB, Pin 3: DacC, Pin 4: DacD, Pin 8: SG,

Pin11: Trigger out, Pin 12: DAC update, Pin 13: Sampling

(Pulsed Mode)

PSD input

HD-15 connector: PSD input, I2C, SPI, supply voltages

Power plug

Input for coaxial power connector (5,5/2,5 mm)

Status LED

LED indicator for microcontroller activity

USB port

USB port for flashing the microcontroller

Prog Key

Hold key and switching on power supply: Enter program mode

In normal use: Perform Autogain

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4 Connection of the PSD Reader

The PSD Reader is commonly used to set the gain of the PSD detectors and read out the

position and angle data. For this purpose the PSD detector is connected via Sub-D 15 HD

cable (1:1 Pin connection) to the PSD Reader. This configuration is shown in Figure 6. The

12 Volt power supply of the PSD Reader is used to supply the electronics and the PSD

detector. For the communication to the PC a UBS cable is included.

Figure 6 Connection of the PSD Reader

4.1 Aligna Con (optional)

TEM Messtechnik GmbH offers an Aligna Con module to get access to the raw signals of the

PSD via BNC connector. This allows a monitoring of the signal with e.g. an oscilloscope

without limitation of the bandwidths. The Aligna Con is either inserted into the connection

between the PSD and the PSD Reader or connected to the PSD reader with a y-adapter

cable (see Figure 7 and Figure 8).

Figure 7 In-Line configuration

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Figure 8 Y-configuration

4.2 PSD Reader with DAC (optional)

If ordered the PSD Reader can equip with a 4 channel digital-to-analog converter, providing

+/-10 volts per channel. The output voltages can be controlled via Kangoo Software or

coupled to the measured pointing data. As pointing output the voltages correspond to the

measured position in mrad or mm (mrad or mm / Volt). The four pointing signals can be

connected at the DAC output via AlignaCon module to an oscilloscope.

5 Software Installation

5.1 Installing the Kangoo Software

To install the Kangoo software, start the program “Install.exe” in the root directory of the

installation CD. The installer will show a welcome screen with several options.

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Figure 9 Kangoo installation: Welcome screen

“Details” informs you about the installation procedure.

“Source path” indicates the source path of the installation.

“Destination Path”: Here, you can choose the desired destination path. The standard

directory is “TEM” in the "ProgramFiles" folder. On Windows Visa or Windows 7 systems,

please avoid the "Program Files" folder and choose the path "C:/TEM”!

The button “OK, install now!” starts copying all required files from the source path to the

destination path.

During the installation procedure, the installation program checks all required files.

Figure 10 Kangoo installation: Progress

The program then creates a list of file copy commands. When this list is complete, you can

check the list and start the copy procedure.

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Figure 11 Kangoo installation: Start copy procedure

Figure 12 Kangoo installation: Summary

Figure 13 Kangoo installation: Successful installation

5.2 Installing USB driver

Typically, when the USB connection between the micro-controller and a PC is first made,

Windows will open the Found New Hardware Wizard. Here, choose to install drivers from a

user-specified location. The necessary driver file is located in the directory

“TEM/Service/USB Driver” in the Kangoo installation directory (or on the USB Stick). The

Hardware Wizard will now finish the installation and no further configuration will be

necessary. Once the installation is complete, Windows will assign a COM-port. To find out

which COM-port has been assigned, check for a new entry in the section “Ports (COM &

LPT)” of the device manager.

6 Upgrading the Firmware

Please contact TEM Messtechnik for details about firmware upgrades.

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