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This version (08 Oct 2013 03:41) was approved by NevadaMark.The Previously approved version (30 Nov 2012 19:00) is available.Diff

ADIS16240 EVALUATION ON THE ADISUSB

OVERVIEW

The ADIS16240 iSensor® is a complete vibration sensing system that combines triaxial acceleration sensing with advanced time domain and frequency domain signal processing. Time domain signal processing includes a programmable decimation filter and selectable windowing function. The electrical connection typically only requires 5 I/O lines for synchronous data collection, as shown in the following figure:

ADIS16240/PCB BREAKOUT BOARD

For those who are on a tight timeline, connecting the ADIS16240 to an embedded controller will provide the most flexibility in developing application firmware and will more closely reflect the final system design. The ADIS16240/PCBZ is the breakout board for the ADIS16240 and may provide assistance in the process of hooking it up to an existing embedded processor system. For more information, click on the following link: ADIS16240/PCBZ

ADISUSB: PC EVALUATION

For those who would prefer to perform PC-based evaluation of the ADIS16240, before developing their own embedded system, the ADISUSB is the appropriate system to use. The remainder of this Wiki site will focus on PC-based evaluation with the ADISUSB system.

EQUIPMENT LIST

SYSTEM REQUIREMENTS

Windows XP, Vista, 7 (32-bit systems only)

NOTE: All the required files are contained in the .Cab file and deployed during software package install.

PHYSICAL SETUP

The ADIS16240/PCBZ provides the ADIS16240 function on a 1.2 inch × 1.3 inch printed circuit board (PCB), which simplifies the connection to an existing processor system. The four mounting holes accommodate either M2 (2mm) or Type 2-56 machine screws. These boards are made of IS410 material and are 0.063 inches thick. The second level assembly uses a SAC305-compatible solder composition (Pb-free), which has a pre-solder reflow thickness of approximately 0.005 inches. The pad pattern on the ADIS16240/PCBZ matches that shown in below. J1 and J2 are dual-row, 2 mm (pitch) connectors that work with a number of ribbon cable systems, including 3M Part Number 152212-0100-GB (ribbon-crimp connector) and 3M Part Number 3625/12 (ribbon cable).

NOTE: Do not plug the ADISUSB into the USB cable at this stage of the setup. Wait until the software installation is complete.

Step #1

The connection to the ADIS16240/PCBZ is simple using J1 and a 12 pin cable included with the ADISUSB.

WARNING: Make sure that the connector cable going from J1 on the ADIS16240/PCBZ is properly aligned to the J1 connector on the ADISUSB. The 12 pin cable is included with the ADISUSB.

Step #2

Mounting to the system frame is accomplished using 4 M2x.4x4mm machine screws included with the ADIS16240/PCBZ. The mounting location holes are marked as an example in the picture below. Use the 4 holes to secure the ADIS16240/PCBZ to the ADISUSB.

Step #3

The following picture shows JP1 in the +3.3V position (factory-default). That is the correct JP1 jumper setting on the ADISUSB) required for the ADIS16240/PCBZ.

NOTE: If JP1 is left on +5v the software will look like the following picture. Move JP1 to the+3.3V setting to correct the problem.

ADIS16240 Evaluation SOFTWARE

Click here to download the ADIS16240 Evaluation Software to a personal computer, which enables PC-based evaluation of the ADIS16240 on an ADISUSB evaluation system. The download file will contain three separate files: The CAB file (ADIS16240_Rev_1.cab), the setup file (setup.exe), and the setup list. Copy these files to a convenient folder for running the application from.

Navigate to the folder where the files were saved and double click the setup.exe file. The following pictures are a guide for the ADIS16240 Evaluation Software install. The Welcome screen will appear click OK to continue.

Please choose a directory for the software application or use the default settings (recommended) and click the computer icon button to go to the next step.

Choose a program group or use the default settings (recommended) and click Continue. The last picture confirms completion click OK to finish.

USB Driver Installation

The ADIS16240_EVAL_Rev_1.cab file contains USB drivers that are compatible with both 32-bit and 64-bit Windows systems. The drivers are unpacked the same time the software application is loaded by double clicking the setup.exe file. The first time the ADISUSB board is plugged into the computer (using the included USB mini cable) the hardware is recognized and loaded. The computer Hardware Wizard will find and install the drivers by following the steps below.

The following pictures show the final steps for USB driver install. Click on Next then click on Finish completing the installation.

WARNING: For those who are using Windows XP, Service Pack 3, additional steps are required for completing the driver installation. Please see page 8, on the ADISUSB User Guide (UG-363) for additional information on these steps.

Main Window

Once the ADIS16240 Software starts-up, the Main Window will appear and look like the following picture. The second picture provides color-coded boxes to support further discussion of each function in this screen.

The orange box identifies the drop-down menus, which provide a number of useful features.

The Registers option provides a listing of user-configurable registers in the ADIS16240 and also provides read/write access to each one of these registers.

The Datalog option provides the core data collection function.

The purple box identifies the output registers, which update, real-time, after pressing the Read button (see the red box for the location of the Read button).

The yellow box identifies the waveform recorder window. The window contains the accelerometer outputs.

Register Access

The purpose of the Register Access window is to provide both read and write access to the user registers in the ADIS16240. The following picture shows the appearance of this window.

The color coded boxes illustrate the different functions that this window provides.

The purple box identifies the register category. In addition to the Control/Status, this drop-down control offers access to Output and Calibration registers.

The red box identifies all of the registers that are in the current category. Click on the register name to select a register for individual read/write access.

The green box identifies the read/write control options for the current register selection. Use the hexadecimal format when writing commands to a particular register.

The yellow box updates all the registers in the current category.

The Update Flash command saves writable user register data.

APPLICATION TIP: The Register Access screen writes to user control registers, inside of the ADIS16240, two bytes at a time. So, when configuring a register, make sure to include the hexadecimal number for all 16-bits, before pressing the Write Register button. When using an embedded processor to write to user control registers, inside of the ADIS16240, each command (16-bits) writes to one byte at a time.

Data Capture Menu

The Data Capture function supports synchronous data acquisition, based on the data-ready signal from the ADIS16240. The following picture represents the Data Capture window, right after opening it from the Main Window and the second picture provides color-coded boxes, in order to support further discussion of each function that is associated with this screen.

The red box identifies all of the registers that are eligible for inclusion in the next acquisition process. Click on each box to include a register in the next data acquisition sequence. The box will have a check mark when it has been selected.

The green box identifies the configuration box for the name and location of the data storage file.

The yellow boxes identify a number of configuration options for the data acquisition process. The Samples per File is a user input for the total number of samples in a data record. Note that all selected registers will have this number of samples in the data record file, after the acquisition process completes. After each update to the Record Length box, the software calculates then displays the total Capture Time. The Numeric Data Only…No File Header option allows the user to add or remove the header in the data storage file. The Record as LSB's…No Scaling causes the software to convert the decimal, twos complement number into its representative value. For example, when enabling No Scale LSB's Only, the gyroscope output will be in units of degrees/second.

EXAMPLE EXERCISES

This section currently has no ADIS16240-specific content, but the ADIS16448 Evaluation on the EVAL-ADIS Wiki Site has some good examples to start with.