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resources:eval:user-guides:circuits-from-the-lab:cn0301 [13 May 2013 23:45] – removed references to CN0288 James Fitzgerald | resources:eval:user-guides:circuits-from-the-lab:cn0301 [29 Jul 2021 07:21] (current) – Hardware Registration Harvey John De Chavez |
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====== CN-0301 Software User Guide====== | ====== CN-0301 Software User Guide====== |
===== Overview ===== | ===== Overview ===== |
[[http://www.analog.com/CN0301|CN-0301]] is a linear variable differential transformer (LVDT) signal conditioning circuit. The system converts the output of the LVDT sensor to a unipolar DC voltage and drives the inputs of a successive approximation analog-to-digital converter (ADC). | [[adi>CN0301|CN-0301]] is a linear variable differential transformer (LVDT) signal conditioning circuit. The system converts the output of the LVDT sensor to a unipolar DC voltage and drives the inputs of a successive approximation analog-to-digital converter (ADC). |
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This circuit uses a single chip solution that drives the excitation signal of the primary side of the LVDT and converts the secondary side. The complete system uses a 12-bit ADC resulting in a dynamic range of 82dB at a standard LVDT bandwidth of 250Hz. (The term bandwidth used in this case is referring to a sinusoidally varying mechanical position and can be easily configured to meet wider bandwidth applications by configuring a few external passive components.) | This circuit uses a single chip solution that drives the excitation signal of the primary side of the LVDT and converts the secondary side. The complete system uses a 12-bit ADC resulting in a dynamic range of 82dB at a standard LVDT bandwidth of 250Hz. (The term bandwidth used in this case is referring to a sinusoidally varying mechanical position and can be easily configured to meet wider bandwidth applications by configuring a few external passive components.) |
This circuit note discusses the design steps needed to optimize the circuit shown in Figure 1 for a specific bandwidth including noise analysis and component selection considerations. | This circuit note discusses the design steps needed to optimize the circuit shown in Figure 1 for a specific bandwidth including noise analysis and component selection considerations. |
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This user guide will discuss how to use the evaluation software to collect data from the [[http://www.analog.com/EVAL-CN0301-SDPZ|EVAL-CN0301-SDPZ]] Evaluation Board **(CN-0301 Board)** | This user guide will discuss how to use the evaluation software to collect data from the [[adi>EVAL-CN0301-SDPZ|EVAL-CN0301-SDPZ]] Evaluation Board **(CN-0301 Board)** |
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{{:resources:eval:user-guides:circuits-from-the-lab:cn0301:cn0301-simplified_schematic.png?nolink&|}} | {{:resources:eval:user-guides:circuits-from-the-lab:cn0301:cn0301-simplified_schematic.png?nolink&|}} |
===== Required Equipment ===== | ===== Required Equipment ===== |
* [[http://www.analog.com/EVAL-SDP-CB1Z|EVAL-SDP-CB1Z]] Controller Board (**SDP-B Board**) | * [[adi>EVAL-SDP-CB1Z|EVAL-SDP-CB1Z]] Controller Board (**SDP-B Board**) |
* [[http://www.analog.com/EVAL-CN0301-SDPZ|EVAL-CN0301-SDPZ]] Evaluation Board (**CN-0301 Board**) | * [[adi>EVAL-CN0301-SDPZ|EVAL-CN0301-SDPZ]] Evaluation Board (**CN-0301 Board**) |
* [[http://www.analog.com/EVAL-CFTL-6V-PWRZ|EVAL-CFTL-6V-PWRZ]] **(+6V Power Supply)** or equivalent | * [[adi>EVAL-CFTL-6V-PWRZ|EVAL-CFTL-6V-PWRZ]] **(+6V Power Supply)** or equivalent |
* [[http://www.analog.com/EVAL-CFTL-LVDT|EVAL-CFTL-LVDT]] Linear Variable Differential Transformer (Measurement Specialties, Inc. E-100 Economy Series LVDT) | * [[adi>CN0301|EVAL-CFTL-LVDT]] Linear Variable Differential Transformer (Measurement Specialties, Inc. E-100 Economy Series LVDT) |
* [[ftp://ftp.analog.com/pub/cftl/CN0301/|CN-0301 Evaluation Software]] | * [[ftp://ftp.analog.com/pub/cftl/CN0301/|CN-0301 Evaluation Software]] |
* (supplied with provided CD in kit) | * (supplied with provided CD in kit) |
* USB type A to USB type mini-B cable | * USB type A to USB type mini-B cable |
===== General Setup ===== | ===== General Setup ===== |
* The [[http://www.analog.com/EVAL-CN0301-SDPZ|EVAL-CN0301-SDPZ]] **(CN-0301 Board)** connects to the [[http://www.analog.com/EVAL-SDP-CB1Z|EVAL-SDP-CB1Z]] **(SDP-B Board)** via the 120-Pin connector | * The [[adi>EVAL-CN0301-SDPZ|EVAL-CN0301-SDPZ]] **(CN-0301 Board)** connects to the [[adi>EVAL-SDP-CB1Z|EVAL-SDP-CB1Z]] **(SDP-B Board)** via the 120-Pin connector |
* The [[http://www.analog.com/EVAL-CFTL-6V-PWRZ|EVAL-CFTL-6V-PWRZ]] **(+6V DC Power Supply)** powers the [[http://www.analog.com/EVAL-CN0301-SDPZ|EVAL-CN0301-SDPZ]] **(CN-0301 Board)** via the DC barrel jack | * The [[adi>EVAL-CFTL-6V-PWRZ|EVAL-CFTL-6V-PWRZ]] **(+6V DC Power Supply)** powers the [[adi>EVAL-CN0301-SDPZ|EVAL-CN0301-SDPZ]] **(CN-0301 Board)** via the DC barrel jack |
* The [[http://www.analog.com/EVAL-SDP-CB1Z|EVAL-SDP-CB1Z]] **(SDP-B Board)** connects to the PC via the USB cable. | * The [[adi>EVAL-SDP-CB1Z|EVAL-SDP-CB1Z]] **(SDP-B Board)** connects to the PC via the USB cable. |
* The [[http://www.analog.com/EVAL-CFTL-LVDT|EVAL-CFTL-LVDT]] **(LVDT)** connects to the [[http://www.analog.com/EVAL-CN0301-SDPZ|EVAL-CN0301-SDPZ]] **(CN-0301 Board)** via the 6-pin header at **J1**. | * The [[adi>CN0301|EVAL-CFTL-LVDT]] **(LVDT)** connects to the [[adi>EVAL-CN0301-SDPZ|EVAL-CN0301-SDPZ]] **(CN-0301 Board)** via the 6-pin header at **J1**. |
\\ \\ {{:resources:eval:user-guides:circuits-from-the-lab:cn0301:cn0301-test_setup.png?nolink&|}} | \\ \\ {{:resources:eval:user-guides:circuits-from-the-lab:cn0301:cn0301-test_setup.png?nolink&|}} |
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===== Connecting the Hardware ===== | ===== Connecting the Hardware ===== |
- Connect the [[http://www.analog.com/EVAL-CFTL-LVDT|EVAL-CFTL-LVDT]] **(LVDT)** to **J1** of the [[http://www.analog.com/EVAL-CN0301-SDPZ|EVAL-CN0301-SDPZ]] **(CN-0301 Board)** as depicted below.\\ \\ <WRAP left round tip 50%>**NOTE:** If a different LVDT is used other than the E-100 LVDT from Measurement Specialties, Inc the wiring schematic will be different!</WRAP>\\ \\ \\ \\ \\ \\ {{:resources:eval:user-guides:circuits-from-the-lab:cn0301:cn0301-wiring_table.png?nolink& |}}{{:resources:eval:user-guides:circuits-from-the-lab:cn0301:cn0301-wiring_schematic.png?|nolink}}\\ \\ {{:resources:eval:user-guides:circuits-from-the-lab:cn0301:cn0301-hardware.png?600|}}\\ \\ | - Connect the [[adi>CN0301|EVAL-CFTL-LVDT]] **(LVDT)** to **J1** of the [[adi>EVAL-CN0301-SDPZ|EVAL-CN0301-SDPZ]] **(CN-0301 Board)** as depicted below.\\ \\ <WRAP left round tip 50%>**NOTE:** If a different LVDT is used other than the E-100 LVDT from Measurement Specialties, Inc the wiring schematic will be different!</WRAP>\\ \\ \\ \\ \\ \\ {{:resources:eval:user-guides:circuits-from-the-lab:cn0301:cn0301-wiring_table.png?nolink& |}}{{:resources:eval:user-guides:circuits-from-the-lab:cn0301:cn0301-wiring_schematic.png?|nolink}}\\ \\ {{:resources:eval:user-guides:circuits-from-the-lab:cn0301:cn0301-hardware.png?600|}}\\ \\ |
- Connect **J8** of the [[http://www.analog.com/EVAL-CN0301-SDPZ|EVAL-CN0301-SDPZ]] **(CN-0301 Board)** to **CON A** of the [[http://www.analog.com/EVAL-SDP-CB1Z|EVAL-SDP-CB1Z]] **(SDP-B Board)**\\ \\ {{:resources:eval:user-guides:circuits-from-the-lab:cn0301:cn0301-hardware2.png?600|}}\\ \\ | - Connect **J8** of the [[adi>EVAL-CN0301-SDPZ|EVAL-CN0301-SDPZ]] **(CN-0301 Board)** to **CON A** of the [[adi>EVAL-SDP-CB1Z|EVAL-SDP-CB1Z]] **(SDP-B Board)**\\ \\ {{:resources:eval:user-guides:circuits-from-the-lab:cn0301:cn0301-hardware2.png?600|}}\\ \\ |
- Connect the [[http://www.analog.com/EVAL-CFTL-6V-PWRZ|EVAL-CFTL-6V-PWRZ]] **(+6V DC Power Supply)** to the Barrel Jack at **J4** or the Screw Terminal at **J3** on the [[http://www.analog.com/EVAL-CN0301-SDPZ|EVAL-CN0301-SDPZ]] **(CN-0301 Board)**\\ \\ {{:resources:eval:user-guides:circuits-from-the-lab:cn0301:cn0301-hardware3.png?600|}}\\ \\ | - Connect the [[adi>EVAL-CFTL-6V-PWRZ|EVAL-CFTL-6V-PWRZ]] **(+6V DC Power Supply)** to the Barrel Jack at **J4** or the Screw Terminal at **J3** on the [[adi>EVAL-CN0301-SDPZ|EVAL-CN0301-SDPZ]] **(CN-0301 Board)**\\ \\ {{:resources:eval:user-guides:circuits-from-the-lab:cn0301:cn0301-hardware3.png?600|}}\\ \\ |
- Connect the USB cable to **J1** of the [[http://www.analog.com/EVAL-SDP-CB1Z|EVAL-SDP-CB1Z]] **(SDP-B Board)**\\ \\ {{:resources:eval:user-guides:circuits-from-the-lab:cn0301:cn0301-hardware4.png?600|}}\\ \\ | - Connect the USB cable to **J1** of the [[adi>EVAL-SDP-CB1Z|EVAL-SDP-CB1Z]] **(SDP-B Board)**\\ \\ {{:resources:eval:user-guides:circuits-from-the-lab:cn0301:cn0301-hardware4.png?600|}}\\ \\ |
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- Change the hexadecimal value of the register to be written in the **ADC Conversion Thresholds Panel**. | - Change the hexadecimal value of the register to be written in the **ADC Conversion Thresholds Panel**. |
- Press the **Set Thresholds Button**. | - Press the **Set Thresholds Button**. |
<WRAP round info 60%>\\ Information regarding the internal register structure can be found in the [[http://www.analog.com/AD7992|AD7992 Datasheet]].</WRAP> | <WRAP round info 60%>\\ Information regarding the internal register structure can be found in the [[adi>AD7992|AD7992 Datasheet]].</WRAP> |
==== Reading ADC Conversion Thresholds ==== | ==== Reading ADC Conversion Thresholds ==== |
- **Establish a USB Connection Link**. | - **Establish a USB Connection Link**. |
- Change the value of the channel of interest in the **LVDT Full Scale Range Panel**. | - Change the value of the channel of interest in the **LVDT Full Scale Range Panel**. |
* The default value is 0.20 inches for both channels. | * The default value is 0.20 inches for both channels. |
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| ===== Downloads ===== |
| {{:resources:eval:user-guides:circuits-from-the-lab:cn0301:cn0301-evaluation_software.zip|CN0301 LabVIEW Source}} |
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| {{:resources:eval:user-guides:circuits-from-the-lab:cn0301:functionsexplained.zip|API Functions Explained}} |
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| =====Registration===== |
| <WRAP round tip 80% > |
| Receive software update notifications, documentation updates, view the latest videos, and more when you register your hardware. [[reg>EVAL-CN0301-SDPZ?&v=RevC|Register]] to receive all these great benefits and more! |
| </WRAP> |