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開ループピエゾコントローラー


  • Output Voltage up to 150 V
  • Controlled Directly by Front Panel or Remotely Through BNC or Command Line
  • Designed for Open-Loop Systems

MDT694B

Single-Channel Model

MDT693B

Three-Channel Model

Related Items


Please Wait
3-Channel Piezo Controller
Click for Details

3チャンネルモデルの前面パネル
1-Channel Piezo Controller
Click to Enlarge

1チャンネルモデルの前面パネル

特長

  • 1チャンネルまたは3チャンネル型をご用意
  • 出力電圧は0~75 V、0~100 V、0~150 Vから選択可能
  • 前面パネルのノブの回転速度によって電圧ステップの粗調整、微調整の切り替えが可能
  • コマンドラインまたはBNCからの電圧供給によりリモート制御が可能
  • 各BNC出力コネクタにはBNC-SMCアダプタが付属
  • 3チャンネルモデルには1つの信号で全チャンネル駆動できるモードあり

当社の開ループピエゾコントローラは、ピエゾアクチュエータならびに積層型ピエゾアクチュエータの微細動作に高精度で低ノイズの出力電圧を供給します。 各出力チャンネルは個々に制御することができ、背面パネルのスイッチの位置によって0~75 V、0~100 V、0~150 Vの電圧を選択できるので、低い最大電圧を選択して、高精細駆動や低電圧のピエゾデバイスの保護が可能です。 電圧はBNC経由で出力されます。各チャンネルの出力値はリアルタイムで4桁のLED表示が示されます。 SMCコネクタ付きのアクチュエータ用にBNC-SMCアダプタ(MDC40211)が各チャンネル毎に1個付属します。

ローカルまたはリモート制御の選択
各チャンネルは、回転調整ノブによるローカル制御、またはBNC経由で外部電圧によるリモート制御、コマンドラインインターフェイスによるリモート制御が選択できます。 コマンドラインインターフェイスはUSB 2.0経由でアクセスします。 調整ノブを使用する場合、ノブをゆっくり回すと電圧ステップ幅が小さくなり、速く回すと電圧幅が大きくなります。 出力電圧値は誤動作を防ぐため、30秒後に自動的にロックされます。 BNC経由で外部電圧を制御している場合、外部から供給された電圧が調整ノブによって供給される電圧に加わります。これによって積層コンデンサへのダメージにつながる制御電圧の急激な変化が防がれます。 外部電圧の大きさに関わらず、出力電圧は背面パネルで選択された最大値を超えることはありません。

マスタースキャンモード
3チャンネル型開ループピエゾコントローラMDT693Bには、1つの信号で3軸全てを制御できるマスタースキャンモードがあります。 このモードは、例えば3アジャスタ付きミラーマウントをチップおよびチルトなしにZ方向のみに移動させる時にご使用になれます。 ピエゾデバイス間のバラつきを調整するため、コントローラMDT693Bにはスキャントリムノブが付いていて、印加電圧を80%~120%のユーザ定義の値に設定することができます。 さらにマスタースキャンモードでは各チャンネルの回転調整ノブによってDCオフセット電圧を設定することもできます。

セットでご提供
3チャンネル型ピエゾコントローラMDT693Bは、左の写真のようにNanoMaxシリーズ3軸フレクシャーステージまたは3軸アジャスタ付きØ25 mm~Ø25.4 mm(Ø1インチ)ミラーマウントとのセットでの販売もしております。

 

Other Piezo Driver Controllers
K-Cube™ Single-Channel ControllerOpen-Loop Benchtop Controller
1- and 3-Channel
Closed-Loop Benchtop Controller
1- and 3-Channel
Modular 2-Channel Rack System Module
Item #MDT694BMDT693B
Output Specifications
Number of Channels13
ConnectorsBNC
(One BNC-to-SMC Adapter per Channel Included)
Output Voltage0 - 75 V, 0 - 100 V, or 0 - 150 V
(Selected by Switch on Rear)
Output Voltage Resolution
When Using Knobs
1.1 mV (for 75 V Output Voltage Setting)
1.5 mV (for 100 V Output Voltage Setting)
2.2 mV (for 150 V Output Voltage Setting)
Output Current (Max)60 mA
Output Noisea1.5 mV (RMS)
~9.9 mV (Peak-to-Peak)
Output Impedance (Max)150 Ω, 1.0 nF
Load Impedanceb (Min)2.5 kΩ
Bandwidth (-3 dB)9 kHz (No Load, Small Signal)
8.5 kHz (No Load, 150 Vpp)c
200 Hz (1.4 µF Piezo, 150 Vpp)c
Bandwidth Stability (-3 dB)<0.01% Over 5 Hours
External Control through BNC
Input Voltage0 - 10 V
Input Impedance10 kΩ
Input Gain7.5 V/V ± 5% (for 75 V Output Voltage Setting)
10 V/V ± 5% (for 100 V Output Voltage Setting)
15 V/V ± 5% (for 150 V Output Voltage Setting)
Output Voltage Resolution
When Using BNC
Limited by Noise of External Voltage Source
Scan Trim Gain Adjustment80% to 120% of Sum of Master Scan External Voltage and
Offset from Rotary Adjustment Knob
External Control through Command Line
Physical InterfaceFemale Type B USB 2.0 Connector
Digital-to-Analog Resolution16-Bit, 2.75 mV
Analog-to-Digital Resolution16-Bit, 3.0 mV
Physical Specifications
Display Type7-Segment LED with Four Digits
Display Resolution0.1 V
Enclosure Size6.05" × 3.22" × 12.11"
(153.6 mm × 81.8 mm × 307.6 mm)
12.18" × 4.15" × 8.55"
(309.4 mm × 105.5 mm × 217.1 mm)
Weight1.93 kg (4.25 lbs)3.02 kg (6.65 lbs)
Operating Temperature10 to 40 °C
Power Specifications
Input Voltage100 - 240 VAC
Input Frequency50 - 60 Hz
Input Power (Max)30 VA60 VA
Fuse TypeIEC60127-2/3 (250 VA, Slow Blow, Type "T")
Fuse Dimensions5 mm x 20 mm
Fuse Rating500 mA600 mA
  • 外部負荷への接続なしで測定(1 nF 出力インピーダンスのみ)。 ピエゾのような容量性負荷を加えると、静電容量により出力抵抗とともにローパスフィルタが形成されるのでノイズは減ります。
  • 最小許容終端抵抗。 インピーダンスがこれより低くなると、短絡回路保護により出力電圧が制限されます。 この条件で使用し続けると回路が劣化して故障の原因となります。
  • ランプ波形を仮定した概算値。 帯域幅はどんな負荷かに強く依存するので、実際には具体的な値での計算が必要です。 詳しい情報については、マニュアルの第6章をご参照ください。

ピエゾ出力端子

BNC メス型

BNC Female

出力電圧: 0~150 V
出力インピーダンス(最大): 150 Ω、1.0 nF

外部電圧制御用端子

BNC メス型

BNC Female

入力電圧: 0~10 V
入力インピーダンス: 10 kΩ

外部コンピュータ制御用端子

USB B型メス

DB9 Female

Motorized Kinematic Mirror Mount with Active Stabilization
Click for Details

閉ループシステムに用いられたピエゾコントローラ

ビーム安定化セットアップに用いられるピエゾコントーラ

実験用のセットアップでは、ビームドリフト(意図しないビーム偏差)を補正するため、アクティブなビームの安定化はよく行われております。 ドリフトは、取り付けが不確実な光学素子や、レーザ光源の不安定性、オプトメカニクスのセットアップ内の熱変動によって起こることがあります。 セットアップエラーを修正することに加えてビームをアクティブに安定化させることは、レーザーキャビティ内の高出力の維持や、光学テーブル上で長時間常に一定の光照射を必要とする実験に、よく行われております。 アクティブにビーム安定化を図ることは長い光路があるセットアップにも有効です。小さな角度偏差も長い光路の先では著しい変位につながるからです。

ビーム安定化のセットアップ例を左の概略図で示しております。 光路に置かれたビームスプリッタにより、ビームの一部がクォドラント位置センサに送られます。クォドラント位置センサは、ディテクタの中央に対するビーム変位をモニタリングします(適切な安定化のためにビームスプリッタはできるだけディテクタの近くに配置してください)。 クォドラントディテクタはビーム変位量に比例したXならびにY位置にエラー信号を出力します。 各エラー信号はピエゾコントローラのチャンネルに送られ、ピエゾコントローラはクォドラントセンサの中央にビームを導きます。

こちらに描かれたセットアップは空間の点状のビームを安定化しています。 光路にわたってビームを安定化させるには、独立した出力チャンネルが4つ(つまりピエゾコントローラは最低2つ)、ピエゾアジャスタ付きのミラーマウントが2つ、位置センサが2つ、ならびに位置センサーコントローラが2つ必要です。 ビーム安定化のセットアップに推奨する部品は下記の表に記載されています。

Suggested Components
DescriptionItem #
Piezoelectric ControllerMDT693B Three-Channel Benchtop Controller
or MDT694B Single-Channel Benchtop Controllersa
Mirror Mount with Piezo Adjusters
(Choose One)
POLARIS-K1S3P Polaris® Mirror Mount with 3 Adjusters,
POLARIS-K1S2P Polaris® Mirror Mount with 2 Adjusters,
KC1-PZ (KC1-PZ/M) Mirror Mount, or
KC1-T-PZ (KC1-T-PZ/M) Mirror Mount with SM1-Threaded Bore
Quadrant Position DetectorPDP90A (320 - 1100 nm),
PDQ80A (400 - 1050 nm),
or PDQ30C (1000 - 1700 nm)
K-Cube™ Position Sensor ControllerKPA101
  • 制御軸1つにつき1つのコントローラが必要です。

ソフトウェア

バージョン 2.4.1

MDT694B&MDT693B制御用GUI&ドライバ、およびサードパーティの開発用SDK付きのソフトウェアパッケージ。

Software Download

シリアルコマンドを使用した外部制御
ピエゾコントローラMDT693Bの3つの出力チャンネルまたはMDT694Bの1つの出力チャンネルはUSB経由のシリアルコマンドを用いて調節することができます。 コマンドの種類がマニュアルの第7章に記載されています。 コマンドには各チャンネル毎に電圧の読み出しや設定を行う機能、固定ステップでの制御電圧の増減機能、ならびにマスタースキャンモード(MDT693Bの機能。詳しくは、「概要」タブをご覧ください)の切り替え機能が含まれます。

互換性
ピエゾコントローラMDT694BならびにMDT693Bは、旧世代製品(MDT694AならびにMDT693A)を制御するソフトウェアならびにシリアルコマンドに対応します。

バージョン2.0.0のソフトウェアをご使用いただく際は、バージョン1.09以降のファームウェアをお使いください。ファームウェアの更新版は左の「Software」ボタンのリンク先でダウンロードいただけます。

ピエゾアクチュエータの帯域幅に関するチュートリアル

多くの高速用途では、ピエゾ素子の形状変化する速度を知ることが必須となります。 ピエゾコントローラとピエゾ積層の帯域幅は、下記の数値がわかることで、計算で求められるようになります。

  1. コントローラが供給可能な最大電流量。下記で例としてとりあげられているBPCシリーズのピエゾコントローラでは、この数値は0.5 Aです。
  2. ピエゾ素子の負荷容量。容量が大きいほどシステムは遅くなります。
  3. 信号振幅の最適値(V)。この振幅がピエゾ素子の伸長寸法を決定します。
  4. ドライバの最大帯域幅。この数値は駆動負荷に依存しません。

出力コンデンサを駆動する際には、帯電と放電にそれぞれ電流が必要です。 帯電電荷の変化dV/dtはスルーレートと呼ばれています。 静電容量が大きいほど、必要とされる電流量は大きくなります。

Piezo Equation 1

例えば100 µmのピエゾ積層において静電容量が20 µFで、最大電流量が0.5 AのBPCシリーズピエゾコントローラで駆動されるとき、スルーレートは下記の数式で求められます。

Piezo Equation 2

したがって電圧が瞬間的に0 V から75 Vに変化するとき、出力電圧が75 Vに達するには3 msかかります。

注記: これらの計算式においては、ドライバの最大帯域幅は計算によって得られる帯域幅よりもずっと大きな値であり、ドライバの帯域幅は制限要因とならないことを前提としています。 なおこれらの数式が、開ループシステムにしか適用できない点にご注意ください。 閉ループモードでは、フィードバックループの応答の遅延がさらに帯域幅を制限します。

正弦波信号

システムの帯域幅は、通常は所定の振幅の正弦信号に対するシステムの応答により規定します。 正弦信号のピーク振幅がA、ピーク‐ピーク電圧がVpp、そして周波数がfの条件で駆動されているピエゾ素子については、以下の数式が成立します。

Piezo Equation 3

右の図は、時間の経過とともに変化する電圧を表しています。 スルーレートの最大値、または電圧の最大の変化は、t = 2nπ, (n=0, 1, 2,...)が成立する時点となり、右図では点 aで示されています。

Piezo Equation 4

上記の数式から下記が導出できます:

Piezo Equation 5

それゆえに下記が成立します:
Piezo Equation 6

上記の例では最大電圧(75 V)での帯域幅は下記の値になることがわかります:

Piezo Equation 7

ピエゾが小さく、静電容量が1/10になると、結果は10倍向上して約1060 Hzとなります。 また、積層が100 µmのままであっても、ピーク‐ピーク電圧が7.5 V(10% の最大振幅値)であれば、結果は同様に10倍向上して約1060 Hzとなります。

三角波信号

ピエゾアクチュエータが三角波で駆動される場合、最大電圧がVpeakで、最小電圧が 0の時、スルーレートは勾配もしくは下記に等しくなります:

Piezo Equation 8

あるいはf = 1/Tであるので、下記が導出できます:

Equation 9

 

矩形波信号

ピエゾアクチュエータが矩形波で駆動される場合、最大電圧がVpeakで、最小電圧が 0の時、スルーレートが最小の立ち上がりと立ち下がりの数値を制限します: この条件では、信号の立ち上がりまたは立ち下がりの途中では、スルーレートは勾配に等しくなります。 trが最小立ち上がり時間であるとき、下記の数式が成り立ちます:

Equation 11

この式により、下記の数式が成立することもわかります。

Equation 12

 ピエゾの動作や理論についてはピエゾ素子のチュートリアルをご参照ください。


Posted Comments:
Tobias Witting  (posted 2020-08-12 12:26:53.747)
We would like to control the MDT693B via USB. The device freezes after sending approximately 260 commands. I am sending the command: ser.write(b'xvoltage=%.2f\r' % y )
asundararaj  (posted 2020-08-14 04:11:02.0)
Thank you for contacting Thorlabs. I have reached out to you via email to troubleshoot.
Hussam Kloub  (posted 2020-04-28 10:39:47.973)
I recently purchased the MDT693B. Is it possible to use the corresponding GUI software to apply three different Pulse signals but each with specific time offset. For example: signal X = Pulse_signal(10 V, 1 Hz, 0 sec time-offset) signal Y = Pulse_signal(5 V, 0.5 Hz, 0.5 sec time-offset) signal Z = Pulse-signal(10 V, 1 Hz, 1.0 sec time-offset)
YLohia  (posted 2020-04-28 10:29:13.0)
Hello Hussam, thank you for contacting Thorlabs. Unfortunately, the GUI software cannot offer a delayed start function. You can, however, set phase offset's between your signals. So after, say, 1 second of all three signals running, it would appear that the signals had started at different times. Alternately, you can create your own program with the included SDK to have a start delay between the three signals.
user  (posted 2019-09-09 16:21:33.907)
Hi, This product is a little too expensive for me. I would appreciate if Thorlabs could provide me a discount on this product. Is there are any alternative to this which is cheaper and compatible to PB4VB2W Peizo electric bender usage? Tq. Youven
asundararaj  (posted 2019-09-09 10:17:06.0)
Thank you for your Feedback. With the Piezoelectric Benders (such as PB4VB2W), any voltage driver with a voltage limit of at least 150 V can be used; for example, the KPZ101 is one such controller. We try to offer different options at different price points for our customers. Please review our discount policy here : https://www.thorlabs.com/discountPolicy.cfm
Nikhil Sethia  (posted 2019-06-17 08:57:53.97)
What is the highest frequency sine waves that I could generate using this device ?
YLohia  (posted 2019-06-17 11:43:09.0)
Hello, the bandwidth as given in the Specs tab is as follows: 9 kHz (No Load, Small Signal) 8.5 kHz (No Load, 150 Vpp) 200 Hz (1.4 µF Piezo, 150 Vpp) Please note that this driver does not have an internal signal generator.
kdhyun6  (posted 2019-03-05 17:45:52.937)
Does this device support floating power supply? From my knowledge, it should be, but there is no comment or circuit diagram to say it uses floating ground. Thank you. Best, Dohyeon Kwon
llamb  (posted 2019-03-07 03:45:01.0)
Hello Dohyeon, thank you for your feedback. Both the ground of the BNC connectors and the chassis of the product are connected to the ground line on the AC input cable, so it is not floating.
xw15  (posted 2019-01-30 01:17:31.073)
Hi. I'm using MDT693B but I can't find the CD and there is no information about how to use this together with labview. And when I use the software download from your website, the nanomax stage didn't move. Can you offer some help
YLohia  (posted 2019-01-31 10:32:25.0)
Hello, thank you for contacting Thorlabs. Please use this link to download the software and update the firmware on your MDT : https://www.thorlabschina.cn/software_pages/ViewSoftwarePage.cfm?Code=MDT69xB. We include an SDK for LabVIEW in the installation folder : C:\Program Files (x86)\Thorlabs\MDT69XB\Sample\MDT69XB SDK Manual.pdf
evt.tools  (posted 2018-06-29 10:55:03.45)
Hello Give me pls customs code open loop piezo controller MDT694B Single-Channel Model Kind regards, Namik Guliev
llamb  (posted 2018-07-07 11:56:13.0)
Hello Namik, thank you for contacting Thorlabs. While we do not provide custom programming codes, we would be happy to troubleshoot any issues you may be seeing. I will reach out to you directly to discuss further.
hsong41  (posted 2016-07-03 16:50:41.503)
I'm using MDT694B with the software what you give and labview. However, when I generate sine signal as an input with 2 Hz (frequency), the controller was suddenly stopped. Also, within low frequency, the controller couldn't receive all of signal points. How can I generate periodic signal with high frequency? Is it possible?
dean.salisbury  (posted 2016-03-14 08:36:18.857)
My company uses a MDT694B, Single-Channel Mode. The unit has a CE mark, however, I'm looking for a CB report and test certificate for S2 compliance. A CB test report and certificate typically contain the IEC Standard or IECEE CB Scheme symbols.
besembeson  (posted 2016-03-14 05:24:08.0)
Response from Bweh at Thorlabs USA: I will contact you regarding this please.
besembeson  (posted 2015-09-23 05:18:09.0)
Response from Bweh at Thorlabs USA: I will be contacting you by email to further discuss this.
andrew_choo  (posted 2015-08-25 23:46:38.143)
Hi may I know how to calibrate my product? I have a MDT694B and the value on the controller and LabView are sometimes the same, and sometimes different. Also, sometimes LabView does and does not detect the controller. Is there a way to fix this?
besembeson  (posted 2015-09-25 03:45:16.0)
Response from Bweh at Thorlabs USA: I will follow-up with you.
alexshakouri  (posted 2015-07-22 10:12:45.2)
I am having a problem with the MDT693b connection to my computer. For some reason it will randomly disconnect from my computer and I won't be able to control it from the computer anymore. It would also randomly connect back to my computer. I tried to uninstall the driver and reinstall, but when I use the CD it just says to installed the driver again. I also can't find out where the driver for the MDT693b is located, even though I installed it according to the CD instructions. Any help would be much appreciated!
besembeson  (posted 2015-07-23 05:38:24.0)
Response from Bweh at Thorlabs: I will followup with you by email.
stefan.breuer  (posted 2015-03-10 18:51:23.877)
Dear Thorlabs team, is it possible to apply an AC voltage to the EXT input of a MDT693A? We intend to modulate the piezo voltage below 100 Hz. Thank you in advance. Kind regards, Stefan Breuer
jlow  (posted 2015-03-24 11:42:59.0)
Response from Jeremy at Thorlabs: Yes, you can input an AC voltage signal to the EXT INPUT on the unit. The max. input voltage is 10V and the voltage gain is either 7.5X, 10X, or 15X, depending on the output voltage range setting.
emmerich  (posted 2014-10-08 11:47:36.79)
Hello, I just performed the firmware update for the MDT693B and I'm stuck at the point where I SHOULD NOT turn off the update program, but cycle the power button of the device. Windows 7 tells me that it doesn't recognize any working device and it has been deactivated once I switch the device back on. What should I do? Thank you!!
jlow  (posted 2014-10-08 04:00:22.0)
Response from Jeremy at Thorlabs: We have contacted you directly to troubleshoot this.
jlow  (posted 2013-01-22 10:27:00.0)
Response from Jeremy at Thorlabs: You should be able to communicate with the MDT69xA in Matlab. There are some resources using serial command in Matlab at the following two links to get you started: http://www.mathworks.com/help/matlab/matlab_external/getting-started-with-serial-i-o.html http://www.mathworks.com/help/matlab/ref/serial.html Please make sure that the settings for the COM port can be found on page 19 of the manual (http://www.thorlabs.com/Thorcat/12500/MDT693A-Manual.pdf). Pages 20-21 are the commands for communicating with the driver.
jtamez1983  (posted 2013-01-21 19:42:01.85)
Hello, I am trying to control the MDT693A via Matlab, however I am having some difficulties sending the commands. It has only worked once and the values never display after. I can't find the error in my code. Has anyone else try this on matlab or VB? thanks.
jlow  (posted 2013-01-14 13:37:00.0)
Response from Jeremy at Thorlabs: The code given is just a sample for using the VISA serial write and read with the driver. One of the more common issue with this is that one would need to manually configure the COM port. You will have to select the correct COM port (look under Device Manager in your computer) and then input the settings. The settings for the COM port can be found on page 19 of the manual (http://www.thorlabs.com/Thorcat/12500/MDT693A-Manual.pdf). Pages 20-21 are the commands for communicating with the driver.
david.n.hutch  (posted 2013-01-09 15:04:15.297)
Hi. Thanks for putting up the LabVIEW code. (For other users: it's at http://www.thorlabs.us/software_pages/ViewSoftwarePage.cfm?Code=MDT693A, click Libraries tab). However there is no documentation and it's not clear to me what the "Flow Controls etc" buttons/values are supposed to do. I've tried a few different things but the LabVIEW code doesn't appear to work for me. (Note that the specific Thorlabs Mdt69xA software works just fine, so my computer can communicate with the instrument, it's just the LabVIEW code that doesn't seem to work -- but I'm not sure if I'm doing it right.
jlow  (posted 2012-09-05 15:36:00.0)
Response from Jeremy at Thorlabs: I will e-mail you the library for this directly. We are going to be adding this to our software download page shortly.
pedrotamez9  (posted 2012-09-05 13:26:50.0)
Can someone tell where I can find the LabView library to communicate with MDT693A? Thank you.
jlow  (posted 2012-08-02 14:27:00.0)
Response from Jeremy at Thorlabs: The MDT69xA uses serial communication. The main LabVIEW functions to use would be under "Instrument I/O" -> "VISA". I will contact you directly to send you the LabVIEW library file.
kenjunderwood  (posted 2012-08-02 13:50:45.0)
I'm attempting to control my MDT694A using LabVIEW 2011, and while the Thorlabs GUI control works fine, I'm not sure how to implement the serial controls into LabVIEW as recommended in the manual. It says that the software is completely compatible with LabVIEW, but I haven't found a way to bridge the two. Previous comments suggest the existence a LabVIEW library for the MDT694A, as well. Would it be possible to get a copy of that library, or possibly some help using the MDT69xA software with LabVIEW? Thanks!
tcohen  (posted 2012-04-12 10:51:00.0)
Response from Tim at Thorlabs: The MDT694A can communicate via the serial output RS-232 port using a standard DB9 male to DB9 female cable. The serial command syntax can be found in the manual at http://www.thorlabs.com/Thorcat/12500/12534-D02.pdf. I will contact you with the LabVIEW library and to further discuss your application.
lsanfelici  (posted 2012-04-11 21:19:38.0)
Dear Tholabs colleague, I'm about to start interfacing the MTD694A unit thought LabView 2011 in order to close a loop, and definetely I don't want to broke the unit's firmware. 1) Could you please send me instructions on how to avoid that? Or how to succeed in making this communication happen? 2) Also, any Labview library is super welcome! 3) Is the communication cable is just a pin to pin serial cable? (Guys in the lab lost the original one) Many thanks!
tcohen  (posted 2012-04-04 15:28:00.0)
Response from Tim at Thorlabs: Thank you for your feedback. I have contacted you with the LabVIEW library file.
reuble  (posted 2012-04-02 21:37:09.0)
Hi, Would you happen to have a LabVIEW dll or a sample program for the MDT693A controller? I'm having trouble getting the serial communication to work.
274057062  (posted 2012-03-20 22:06:37.0)
Hello. Can your piezo controllers drive piezo devices sold by other companies?
bdada  (posted 2012-02-17 12:50:00.0)
Response from Buki at Thorlabs to nbdpw: We are glad to hear the problem has been resolved. Please contact TechSupport@thorlabs.com if you have additional questions.
nbdpw  (posted 2012-02-17 04:18:26.0)
Thank you for the software. My problem has been resolved. ATTENTION anyone else who is having the 'echo' problem when communicating via MATLAB! Check which terminator your code is using. The MATLAB default is 'LF', but the MDT693A units use 'CR'.
bdada  (posted 2012-02-15 18:56:00.0)
Response from Buki at Thorlabs to nbdpw: I have added the CDROM to our ftp site and will contact you with more information.
nbdpw  (posted 2012-02-14 18:38:02.0)
Hello, sorry, I guess I did not select "Contact Me" when I submitted the last feedback. Please do contact me in order to resolve my two issues. 1 - I require the control software, as shown on the software page, not a firmware update. 2 - I need to know how to get the MDT693A device out of echo mode. Thank you.
nbdpw  (posted 2012-02-07 22:12:44.0)
Hello, I am also having the same echo mode issue as the other users here. Could I please be told how to recalibrate the MDT693A unit? Also, the link provided is for MDT693A FIRMWARE. I require the control software, not the firmware.
bdada  (posted 2012-01-25 14:21:00.0)
Response from Buki at Thorlabs: Here is a link to download the software of the MDT693A: http://www.thorlabs.com/software/MDT693AVers301.zip
bdada  (posted 2012-01-24 12:47:00.0)
Response from Buki at Thorlabs: Thank you for using our feedback forum. We have emailed you information on how to download the software from our ftp site.
nbdpw  (posted 2012-01-23 19:39:11.0)
We purchased the MDT693A, but have lost the software that comes with it. I do not see a link available for it to be downloaded from this website. How would we go about acquiring another copy?
bdada  (posted 2011-12-13 16:29:00.0)
Response from Buki at Thorlabs: We are sorry to hear about the problem you are experiencing. We have contacted you to get more information about your set up and provide you with some troubleshooting tips.
byungchae.kim  (posted 2011-12-12 00:46:38.0)
I am trying to control output voltage of MDT693A with MATLAB through serial port. While it seems communication itself is working, the displayed voltage change in MDT693A is quite random even though I set same output voltage repeatedly. Can you help me to solve this problem asap?
bdada  (posted 2011-11-14 23:35:00.0)
Response from Buki at Thorlabs: Thank you for participating in our Feedback Forum. We have contacted you with the calibration procedure and to provide additional support.
optmg  (posted 2011-11-14 12:15:34.0)
sorry, our machine is MDT693A previously, I typed it wrongly.
optmg  (posted 2011-11-12 14:30:57.0)
I have the same problem with my MDT694A with many of the users. The serial read returns the written command both to my MATLAB program and with HyperTerminal. Should I do the calibration too? wait for your contact. Thanks
jjurado  (posted 2011-08-18 17:19:00.0)
Response from Javier at Thorlabs to natalia.bruno: We will send you a document with instructions for the calibration procedure. I will also send a dll file for developing your own LabVIEW vi.
natalia.bruno  (posted 2011-08-18 14:48:27.0)
I think I have corrupted the calibration of the MDT694A using LabView. The voltage is now ~36,7 volts, almost half of the maximum limit voltage, and even the software provided from Thorlabs is no longer able to control the device. Do I have to send it back or can you provide me the calibration procedure? It seems some other users also have this problem (see the feedback page on thorlabs website or on the National Instrument forum ). --> > It would be nice if Thorlabs could provide a Labview VI example for this controller.
frank.xie  (posted 2011-07-07 15:03:03.0)
I have had some issues communicating with this device through LabView. I have been trying to use the LabView Basic Serial Read and Write VI with this machine; however, the machine does not carry out any command I send until I exit out of LabView and run the ThorLabs software. The ThorLabs software will merely send a message telling me to "cycle the power" and will then close.
jjurado  (posted 2011-06-27 16:45:00.0)
Response from Javier at Thorlabs to frank.xie: Thank you very much for contacting us. I will contact you directly to help you troubleshoot your application.
frank.xie  (posted 2011-06-27 11:57:30.0)
Im having the same problem as many of the other posters, and I need to recalibrate this device. Id appreciate any feedback on how to do so. Customer Email: frank.xie@okstate.edu This customer would like to be contacted.
jjurado  (posted 2011-05-10 13:34:00.0)
Response from Javier at Thorlabs to florian.lemounier: Thank you very much for contacting us. It looks like the calibration data for the MDT controller has been lost, which is often caused by a LabVIEW serial issue. I will contact you directly with some troubleshooting tips.
florian.lemounier  (posted 2011-05-10 10:41:06.0)
I have the same problem as gillett. The serial read returns the command written both with Labview and HyperTerminal. I tried to disable the echo mode sending the command E but it doesnt change anything.
bdada  (posted 2011-03-07 13:23:00.0)
Response from Buki: The calibration data stored in the ePROM of the MDT693A controller was corrupted. This can happen in a LabVIEW read/write serial method. Somehow the LabView code gets into the uController and corrupts this file. The only way to recover from this is to re-calibrate the controller using a DVM and a couple of BNC cables. We have sent you a simple LabVIEW serial protocol lib for the MTD693A.
zjg1984  (posted 2011-03-04 22:28:36.0)
I think I got corrupted controller, too! I was trying to control our new MDT693A with the Labview VI - Basic Serial Write and Read, suddenly all three axis show ~38.9 volts, and I cannot go lower than that. It seems some users also have this problem. It would be nice if Thorlabs could provide a Labview VI example for this controller.
Thorlabs  (posted 2010-09-14 16:44:26.0)
Response from Javier at Thorlabs to Patrick: It sure sounds like the MDT693A lost its calibration file that is embedded in the uController. When this happens a channel, depending on the max HV setting (75,100,150) shows up at around half of the max value. The only way to correct this is to calibrate the unit. It requires a BNC cable, a DVM, and a PC running a terminal emulator (such as Hyper Terminal) and the procedure document. We can send you this document or get the unit back and implement the calibration here.
patrick.lu  (posted 2010-09-14 03:20:21.0)
I seemed to have corrupted the controller when I was trying to get it to interface with LabView. Now, no matter what I do, I cant get the voltages to go below 21.7, 77.4, and 77.9 for x, y, and z, respectively. Previously, I was able to get the controller to respond to commands in hyperterminal but that no longer seems possible.
Adam  (posted 2010-05-19 09:25:05.0)
A response from Adam at Thorlabs to gillett: The ASCII command E, or an ASCII string "E\r" will disable verbose echo. You may want to try this using Hyper Terminal (or any other terminal emulator). Please also note that we now have an option for our customers to discuss software related questions with other users via our Brainwave forum. A link to this forum can be found below: http://forums.thorlabs.com/profile.php?mode=register
gillett  (posted 2010-05-19 00:09:30.0)
We have bought 3 MDT693A, The provided software works fine. We cannot use Labview to talk to them. Using serial write and read just echos the input. IE writing I\n returns I\n when read is used. The device seems to be in echo mode, with no way of getting it out. If after using the labview code the provided software is used, it asks that the the power on the MDT693A be cycled, after doing so the provided software works again.
Adam  (posted 2010-04-23 09:54:15.0)
A response from Adam at Thorlabs to Jikim: The graphic user interface is suffient to control the X, Y, and Z channels independently.
jikim  (posted 2010-04-23 08:45:10.0)
I have already read the manual of this device, but still Im not sure if one can independently control the output characters of 3 output BNCs using the provided graphic program. For my purpose, it is very demanded to control the parameters of channel X,Y, and Z independently, e.g. amplitude, waveform function, phase etc. Is the graphical interface program sufficient for this purpose, or should I implement a computer interface by the commercial programs (Labview)?
Adam  (posted 2010-04-06 09:36:36.0)
A response from Adam at Thorlabs to abdul: I am sorry to hear that the MDT693A was corrupted. We can send over the calibration instructions. I will email you directly with this information.
klee  (posted 2009-12-14 20:25:11.0)
A response from Ken at Thorlabs to c.j.vanvoskuilen: The MDT693A/694A has RS232 interface so LabView support can be direct from using the VISA serial protocol and ASCII commands described in Section 9.4 in the manual.
c.j.vanvoskuilen  (posted 2009-12-14 17:10:20.0)
On your website it says that the MDT693A is readily usable with Labview. I have it, together with the latest software from your website, but cannot see how to interface it with Labview (no files provided). The manual also provides no clues. Can you help me?
klee  (posted 2009-07-14 18:14:56.0)
A response from Ken at Thorlabs to cherryhuang0120: The software is available for download in out Download page. Click on the Service at the top of the page and then choose Download. Scroll towards the bottom and you will see the MDT693 software.
cherryhuang0120  (posted 2009-07-14 08:53:23.0)
Hi, We bought MDT693 several years ago. However, I can not find any link to download the controlling software to operate it by PC. Could you kind please to send me a zip file of the software or just give me a link to download it? Or, can you give me some LabVIEW code for helping us to start programming? Thank you. Best regards, Cherry
Tyler  (posted 2009-03-13 07:41:08.0)
A response from Tyler at Thorlabs to susumukuma: It is likely that the firmware calibration needs to be corrected. A member of our technical support department will be in contact with you to help resolve this issue.
susumukuma  (posted 2009-03-11 06:52:17.0)
We purchased two MDT694A piezo controllers very recently. The provided self-executable program with them worked fine, but not enough for our purpose. We need to scan voltages with smaller steps that the software can control. We tried to use Labview for that purpose. But we could not find any VIs on the CD-ROM included and the Thorlabs website. So we used the Basic Serial Write and Read.vi of Labview8 for check. By inputting the command XV, we could get the desired voltage, within the maximum value set by XL. After several-time tries, MDT694A became not responsible suddenly. The controller display showed ~38 V and the command XV? returned no value. Even the provided software could not work properly now. On the National Instruments site, I found people with the same problem. Please see the following link: http://forums.ni.com/ni/board/message?board.id=140&thread.id=17790 Could you give me any advice? Susumu Kuma Department of Chemistry, The University of British Columbia

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