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MDT693B and MDT694B
Open-Loop Piezo Controllers

User Guide

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Summary of Contents for MDT693B

Page 1: ...MDT693B and MDT694B Open Loop Piezo Controllers User Guide ...

Page 2: ...verview 8 5 2 MDT693B Back Panel Overview 8 5 3 MDT694B Front Panel Overview 9 5 4 MDT694B Rear Panel Overview 9 5 5 Setting the Output Voltage Limit 10 5 6 Using INT Adjustment Knob 10 5 7 Using EXT Input BNC 11 5 8 Master Scan Control MDT693B Only 12 Chapter 6 Bandwidth Performance 14 6 1 Low Pass Filter 14 6 2 Output Current Limit 14 Chapter 7 Remote Communications 16 7 1 Installing USB Drivers...

Page 3: ...ions Page 2 Rev C July 7 2015 9 1 MDT693B Mechanical Drawing 24 9 2 MDT694B Mechanical Drawing 24 Chapter 10 Troubleshooting 25 Chapter 11 Warranty 26 Chapter 12 Regulatory 27 Chapter 13 Certifications and Compliance 28 Chapter 14 Thorlabs Worldwide Contacts 30 ...

Page 4: ...Direct Current Alternating Current Both Direct and Alternating Current Earth Ground Terminal Protective Conductor Terminal Frame or Chassis Terminal Equipotentiality On Supply Off Supply In Position of a Bi Stable Push Control Out Position of a Bi Stable Push Control Caution Risk of Electric Shock Caution Hot Surface Caution Risk of Danger Warning Laser Radiation Caution Spinning Blades May Cause ...

Page 5: ...zardous voltages and currents Use CAUTION when operating the MDT693B or MDT694B and handling the piezo actuators The piezo elements are electrical capacitors capable of storing electrical energy over long periods of time Besides storing charge from the MDT693B or MDT694B the piezo can accumulate static charge over time due to varying storage temperature and or mechanical loads To safely discharge ...

Page 6: ...eturned when packed into the complete original packaging including all foam packing inserts If necessary ask for a replacement package Mobile telephones cellular phones or other radio transmitters are not to be used within the range of three meters of this unit since the electromagnetic field intensity may exceed the maximum allowed disturbance values according to EN50082 1 ...

Page 7: ...rce including function generators DAC outputs or DC supplies In addition the external voltage can be used as part of a feedback loop for automated alignment systems Since the external input voltage is summed with either the manual or the USB voltage setting the manual USB control can be used for offset adjustments without having to re adjust the external voltage source The MDT693B and MDT694B incl...

Page 8: ...NC to SMC Adapter 3 Included with MDT693B 1 Included with MDT694B 3 USB Type A to Type B Cable 4 Power Cord Determined by the Region the Order was Placed From 5 Operating Manual 4 4 Initial Setup 1 Carefully unpack the controller and accessories If any of the items appear damaged or missing do not use the controller Contact your local Thorlabs tech support for assistance 2 Make sure the POWER swit...

Page 9: ...tion Input 0 10 V 7 Segment LED 4 Digits EXT Input Modulation Input 0 10 V Power Switch Turns Unit On and Off Enable Switch LED Enables Master Scan LED On When Enabled Scan Trim Gain Adjuster 80 120 INT Control Knob Voltage Adjustment AC Input IEC320 Connector Fan Fan with Guard Model Serial Number Voltage Limit Switch Sets Output Voltage Limit Communication USB 2 0 HV Output 3 Channel Output CAUT...

Page 10: ...Overview 7 Segment LED 4 Digits INT Control Knob Voltage Adjustment Power Switch Turns Unit On and Off HV Output 1 Channel Output CAUTION High Voltage EXT Input Modulation Input 0 10 V Fan Fan with Guard Model Serial Number AC Input IEC320 Connector Communication USB 2 0 Voltage Limit Switch Sets Output Voltage Limit ...

Page 11: ...r the 75 V setting the gain is 7 5 V V 5 6 Using INT Adjustment Knob The INT adjustment knobs manually control the output voltages for each channel from 0 V to 150 V This can be thought of as a DC offset voltage since it is summed with the external control voltage up to a maximum control voltage of 10 V Note that changing the voltage through USB commands overrides the INT knob All adjustment knobs...

Page 12: ...maximum control voltage of 10 V To use this feature follow the steps below 1 Attach a piezo to one of the high voltage output connectors on the rear panel of the MDT693B or the front panel of the MDT694B Note The BNC center conductor is positive and the shield is at ground potential Be certain to match piezo polarity to the connector since most piezo elements will be permanently damaged if connect...

Page 13: ...ER SCAN EXT controls adjust all channels simultaneously Enable Button The ENABLE button located on the front panel see Section 5 1 page 8 is used to enable and disable Master Scan mode The EXT in for each channel will be disabled and replaced by the master scan EXT signal Enable LED The enable LED located directly above the ENABLE button will light when Master Scan mode is activated Master Scan EX...

Page 14: ...through the adjustment range of the SCAN TRIM potentiometer To approximately set the SCAN TRIM to 100 zero the pot by turning it counterclockwise as far as possible a maximum of four turns Then adjust the pot clockwise by two turns To precisely set the SCAN TRIM to 100 follow this procedure Adjust all of the INT control knobs counterclockwise as far as possible Disconnect any EXT input connections...

Page 15: ... with the output impedance of the driver For both the MDT693B and MDT694B the output impedance is specified as 150 1 nF 1 2 Where For example consider connecting a piezo with a 1 6 F capacitance to the MDT693B Using the output impedances given in the specification section see page Error Bookmark not defined 1 2 150 1nF 1 6μF 663 6 2 Output Current Limit The output current limit also needs to be co...

Page 16: ...Open Loop Piezo Controllers TTN011225 D02 Rev C July 7 2015 Linear Ramp Signal Triangle Wave 2 1 Sinusoid Wave cos 2 2 Where sin and 2 For all equations above ...

Page 17: ...lete 7 2 Command Line Interface Once the USB drivers have been installed the unit connected to the PC and the power turned on configure the terminal emulator as follows Baud Rate 115 2 kb s Data Bits 8 Parity None Stop Bits 1 Flow Control None If the connection is correct you will see the following after pressing the Enter key The basic structure of the interface is a keyword followed by either an...

Page 18: ...F or any combination of a carriage return and line feed See listing below There are a few exceptions to this which are noted below also noted are unique shortcut keys The prompt symbol will appear on power up and after a command is accepted by the system indicating it is ready to receive another command line ...

Page 19: ... to desired voltage Get Master Scan Enable msenable Returns the state of the Master Scan enable Set Master Scan Enable msenable n Sets Master Scan mode Values 1 enable 0 disable Get Master Scan Voltage msvoltage Reads and Returns the master scan voltage Set Master Scan Voltage msvoltage n Sets a master scan voltage that adds to the x y and z axis voltages Sets master scan DAC Read X Axis Voltage x...

Page 20: ...ion dacstep n Sets the step resolution when using up down arrow keys n 1 to 1000 Increment Voltage Up arrow Increments the current channel voltage by resolution set in dacsteps Adjustment range 0 to 65536 limited by factory calibrated limit Decrement Voltage Down arrow Decrements the current channel voltage by resolution set in dacsteps Adjustment range 0 to 65536 limited by factory calibrated lim...

Page 21: ...age for the X axis Read Min X Axis Voltage Xmin Returns the minimum output voltage limit for X axis Set Min X Axis Voltage xmin n Sets the minimum output voltage limit for X axis Read System Min Voltage sysmin Returns the minimum output voltage for the system Set System Min Voltage sysmin n Sets the minimum output voltage for the system Read Max X Axis Voltage Xmax Returns the maximum output volta...

Page 22: ...ommand in the above table In addition to the above commands there is also special functionality added to the arrow keys of the computer s keyboard Get Serial Number serial Returns the serial number Get Compatibility Mode cm Returns compatibility mode 0 disabled 1 enabled Set Compatibility Mode cm n Sets compatibility mode 0 disable 1 enable Get Rotary Mode rotarymode Returns the rotary controls mo...

Page 23: ...n this mode will cause circuit degradation and eventual circuit failure 3 Assume a ramp function is used The bandwidth is load dependent and requires calculation for a more representative number See Chapter 6 page13 for details Performance Input Output Specs External Input Voltage 0 10 V External Input Impedance 10 kΩ Output Voltage 0 75 0 100 or 0 150 VDC Limit Switch Dependent Output Current Lim...

Page 24: ...le Power On Rocker Switch Scan Trim Controls 4 Turn Potentiometer Remote Interface USB Type B Physical Specifications Display Type 7 Segment LED with 4 Digits Number of Displays MDT693B 3 MDT694B 1 Display Resolution 0 1 V Number of Channels MDT693B 3 MDT694B 1 Dimensions MDT693B 12 18 x 4 15 x 8 55 309 4 x 105 5 x 217 1 mm MDT694B 6 05 x 3 22 x 12 11 153 6 x 81 8 x 307 6 mm Weight MDT693B 3 02 kg...

Page 25: ...nical Drawings Page 24 Rev C July 7 2015 Chapter 9 Mechanical Drawings 9 1 MDT693B Mechanical Drawing 9 2 MDT694B Mechanical Drawing 4 15 105 5 mm 12 18 309 4 mm 8 55 217 1 mm 2 88 73 2 mm 12 11 307 6 mm 11 63 295 4 mm 3 22 81 8 mm 6 05 153 6 mm ...

Page 26: ...persists please return the unit to Thorlabs for evaluation I cannot adjust the voltage 1 Make sure the correct channel is selected Adjust the voltage by pushing in the INT knob Adjustment can only occur when the display is blinking I can t connect to the MDT693B MDT694B over the USB port 1 Make sure the unit is turned on prior to connecting the USB 2 Power off unit remove AC cord remove the USB ca...

Page 27: ... responsibility of the customer Thorlabs Inc warrants all firmware and software used for the MDT69xB to operate fault free provided they are used in accordance with the requirements stated in this manual However Thorlabs does not warrant a fault free operation for special applications Thorlabs Inc does not guarantee that this manual is error free and reserves the right to change this manual the sp...

Page 28: ...labs products such as Pure OEM products that means assemblies to be built into a unit by the user e g OEM laser driver cards Components Mechanics and optics Left over parts of units disassembled by the user PCB s housings etc If you wish to return a Thorlabs unit for waste recovery please contact Thorlabs or your nearest dealer for further information Waste Treatment is Your Own Responsibility If ...

Page 29: ...Open Loop Piezo Controllers Chapter 13 Certifications and Compliance Page 28 Rev C July 7 2015 Chapter 13 Certifications and Compliance ...

Page 30: ...Open Loop Piezo Controllers TTN011225 D02 Rev C July 7 2015 ...

Page 31: ...urope thorlabs com Scandinavia Thorlabs Sweden AB Bergfotsgatan 7 431 35 Mölndal Sweden Tel 46 31 733 30 00 Fax 46 31 703 40 45 www thorlabs com Email scandinavia thorlabs com France Thorlabs SAS 109 rue des Côtes 78600 Maisons Laffitte France Tel 33 0 970 444 844 Fax 33 0 825 744 800 www thorlabs com Email sales fr thorlabs com Brazil Thorlabs Vendas de Fotônicos Ltda Rua Riachuelo 171 São Carlos...

Page 32: ...www thorlabs com ...

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