Texas TSW1100 User manual

TSW1100 Data Capture Board
Quick Start Guide
August 2005
SLAU155

2 SLAU155 – August 2005

Contents
1 Overview ................................................................................................................... 5
2 Setup the TSW1100 .................................................................................................... 72.1 Connect to a Texas Instrument’s ADC EVM .................................................................... 72.2 Provide Power to the ADC EVM .................................................................................. 72.3 Providing Power to the TSW1100 ................................................................................ 72.4 Connecting to the USB ............................................................................................. 72.5 Launching the TSW1100 Software ............................................................................... 7
3 Capture the ADC Samples, Perform an FFT, and Plot the Results .................................... 93.1 Information ........................................................................................................... 93.2 Setting Up Remote Control of Instruments ...................................................................... 93.3 Select the ADC Under Evaluation ................................................................................ 93.4 Configure the Input Waveform (A
IN
) Conditions ................................................................ 93.5 Configure the ADC Sampling Frequency (F
S
) Conditions ..................................................... 93.6 Configure the TSW1100 Capture ................................................................................. 93.7 Acquire Data ....................................................................................................... 10
4 Performing a Dual Channel Capture ............................................................................ 114.1 Information ......................................................................................................... 114.2 Setting up Remote Control of Instruments ..................................................................... 114.3 Select the ADC Under Evaluation ............................................................................... 114.4 Configure the Input Waveform (A
IN
) Conditions ............................................................... 114.5 Configure the ADC Sampling Frequency (Fs) conditions .................................................... 114.6 Configure the TSW1100 Capture ............................................................................... 114.7 Acquire Data ....................................................................................................... 12
5 Saving and Recalling Data to a File ............................................................................ 135.1 Saving a Data Set ................................................................................................. 135.2 Retrieving a Saved Data Set .................................................................................... 135.3 Performing a Screen Capture.................................................................................... 13
6 Exiting the Program .................................................................................................. 15
Important Notices ............................................................................................................... 16
SLAU155 – August 2005 Contents 3

Contents 4 SLAU155 – August 2005

Chapter 1SLAU155 – August 2005
Overview
Texas Instrument’s TSW1100 allows for high-speed digital data capture from Texas Instruments highspeed, high-resolution analog-to-digital converters (ADC). It comes complete with software, allowing theuser to quickly evaluate Texas Instruments ADCs without the need for expensive logic analyzers andcomplex analysis routines. The TSW1100 features data capture speeds of up to 140 MSPS and datacapture depths of up to 16 x 1 million points. It can operate in dual-channel mode allowing simultaneouscapture of a dual-channel ADC. Data is transferred via a USB interface allowing easy PC control and itrequires only one power supply for operation. The TSW1100 is compatible with the following TexasInstruments ADC EVMs: ADS5424, ADS5423, ADS5553, and the TSW1000 (ADS5500). EVM Rev C ofthe ADS5500, ADS5541, ADS5542, ADS5520, ADS5521, and the ADS5522 will also be supported.
This guide allows for a quick setup of commonly used functions; such as setup, acquiring data, saving,and recalling data and performing screen captures. Install the software before using this guide. For morecomplete documentation, see the TSW1100 user’s guide.
SLAU155 – August 2005 Overview 5

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Overview 6 SLAU155 – August 2005

2.1 Connect to a Texas Instrument’s ADC EVM
2.2 Provide Power to the ADC EVM
2.3 Providing Power to the TSW1100
2.4 Connecting to the USB
2.5 Launching the TSW1100 Software
Chapter 2SLAU155 – August 2005
Setup the TSW1100
The TSW1100 has a defined bring up procedure. Follow the steps below in order to ensure properoperation. Not following this procedure could result in improper operation.
Before connecting an ADC, see the TSW1100 website to view the most up to date ADC EVM compatibilitylist. On compatible Texas Instruments ADC EVMs’, connect the right angle digital data output connector toeither J1 or J2. J1 connects to channel 1 of the TSW1100, while J2 connects to channel 2 of theTSW1100. For an ADC with single-channel data output, it is recommended that you connect to channel 2of the TSW1100, as it is dedicated for high speed captures.
Follow the ADC EVM user’s guide instructions and power on the ADC EVM.
You may use either a wall mount transformer that has an output rating of 12 VDC and 500 mA or you canuse a lab power supply that can supply a 12 VDVC to J8 while connecting the return to J9. TexasInstruments recommends that you set a current limit of 500 mA. Power on the TSW1100.
With the PC turned on, connect the USB cable from the PC to the TSW1100 USB connector, J10. At thispoint, the PC should recognize the TSW1100. To verify, you can go to the Hardware Device Manager andselect USB Devices and ensure the TSW1100 is listed as a USB device. At this point, you will also seethe LED D13 illuminated on the TSW1100 signaling that the device has been configured properly and iscommunicating with the PC. This should be the only LED illuminated. If, at this point more than D13 isilluminated, depress the Reset switch (SW2) on the TSW1100.
With the TSW recognized by the hardware device manager, you can run the software package. To run theprogram, click on Start -> Program Files -> Texas Instruments -> Texas Instruments ADC Capture Card.This launches the program window. Initially, the software should display diagnostic info on the FPGversion number in the status window.
SLAU155 – August 2005 Setup the TSW1100 7

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Launching the TSW1100 Software
Setup the TSW11008 SLAU155 – August 2005

3.1 Information
3.2 Setting Up Remote Control of Instruments
3.3 Select the ADC Under Evaluation
3.4 Configure the Input Waveform (A
IN
) Conditions
3.5 Configure the ADC Sampling Frequency (F
S
) Conditions
3.6 Configure the TSW1100 Capture
Chapter 3SLAU155 – August 2005
Capture the ADC Samples, Perform an FFT, and Plot theResults
This section allows you to capture the raw digital data output from the ADC, perform an FFT, plot theresults, and display the performance of the ADC under evaluation.
For the best performance, Texas Instruments recommends using an Agilent 8644 for both the signalsource and the clock source with the appropriate filters. The TSW1100 software automatically controlsthese instruments if they are hooked up using GPIB and the Remote Control of Lab Instruments is turnedon in the Equipment Setup tab. You may also change the GPIB address for both the signal generator andclock generator.
In the top left-hand corner of the user controls, find the pulldown control labeled Texas Instruments chip.Select the appropriate EVM from the list. Based off this selection, the software automatically updates theADC characteristic indicators: number of bits and 2’s compliment.
Find the control labeled Desired Frequency and change it to the sinusoidal frequency you would like toprovide to the ADC analog input. In its default state and for best ADC performance, the softwarecalculates a coherent bin based off of a prime integer and it displays it in the frequency indicator. If youare not using the Remote Control of Lab Instruments feature, then manually set your signal source outputfrequency to coincide with the displayed frequency indicator. You also have control over the amplitude ofthe signal source; Texas Instruments recommends that you set this to be -1 dBFS of the device underevaluation.
Find the control labeled Sampling Frequency and set this to the value at which you want to clock the ADC.For the best performance, do not set this above the recommended device operating frequency. Set theclock amplitude by varying the Clock Amplitude control.
With the understanding that J1 connects to channel 1 and J2 connects to channel 2 of the TSW1100, usethe Capture control to select which channel the ADC EVM is connected to. Select the depth of capture byselecting the acquisition size in the Number of Points control. Texas Instruments recommends that you setthis to 16384 for sinusoidal input evaluation.
SLAU155 – August 2005 Capture the ADC Samples, Perform an FFT, and Plot the Results 9

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3.7 Acquire Data
Acquire Data
At this point you are ready to capture data from the ADC. You can do so by clicking on the red circularAcquire Data button located below the graph. The button turns green and stay green until the capture iscomplete. After it is complete, you will see a FFT plot as well as Capture Statistics and FFT Computations.
Capture the ADC Samples, Perform an FFT, and Plot the Results10 SLAU155 – August 2005

4.1 Information
4.2 Setting up Remote Control of Instruments
4.3 Select the ADC Under Evaluation
4.4 Configure the Input Waveform (A
IN
) Conditions
4.5 Configure the ADC Sampling Frequency (Fs) conditions
4.6 Configure the TSW1100 Capture
Chapter 4SLAU155 – August 2005
Performing a Dual Channel Capture
This section allows you to perform a dual-channel capture from a dual channel ADC, perform an FFT, plotthe results and display the performance of the ADC under evaluation.
For the best performance Texas Instruments recommends using an Agilent 8644 for both the signalsource and the clock source with the appropriate filters. The TSW1100 software automatically controlsthese instruments if they hooked up using GPIB and the Remote Control of Lab Instruments is turned onin the Equipment Setup tab. You may also change the GPIB address for both the signal generator andclock generator.
In the top left-hand corner of the user controls, find the pulldown control labeled Texas Instruments Chip.Select the appropriate EVM from the list. Based off this selection, the software will automatically updatethe ADC characteristic indicators: Number of Bits and 2's Compliment.
Find the control labeled Desired Frequency and change it to the sinusoidal frequency you would like toprovide to the ADC analog input. In it's default state and for the best ADC performance, the softwarecalculates a coherent bin based off of a prime integer and it displays it in the Frequency indicator. If youare not using the Remote Control of Lab Instruments feature, then manually set your signal source outputfrequency to coincide with the displayed Frequency indicator. You also have control over the amplitude ofthe signal source. Texas Instruments recommends that you set this to be -1 dBFS of the device underevaluation.
Find the control labeled Sampling Frequency and set this to the value at which you want to clock the ADC.For the best performance, do not set this above the recommended device operating frequency. Set theclock amplitude by varying the clock amplitude control.
Use the Capture control to select which Chan 1 + Chan 2. Select the depth of capture by selecting theacquisition size in the Number of Points control. Texas Instruments recommends that you set this to16384 for sinusoidal input evaluation.
SLAU155 – August 2005 Performing a Dual Channel Capture 11

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4.7 Acquire Data
Acquire Data
At this point you are ready to capture data from the ADC. You can do so by clicking on the red circularAcquire Data button located below the graph. After clicking the acquire button the software will wait for anexternal trigger, which can be applied by either depressing SW1 or providing a trigger stimulus to J5 of theTSW1100. This synchronously captures ADC data on both channel 1 and channel 2. After it is complete,you will see a FFT plot as well as Capture Statistics and FFT Computations for the channel selected. Youcan view the data and performance for each channel independently.
Performing a Dual Channel Capture12 SLAU155 – August 2005

5.1 Saving a Data Set
5.2 Retrieving a Saved Data Set
5.3 Performing a Screen Capture
Chapter 5SLAU155 – August 2005
Saving and Recalling Data to a File
The TSW1100 software package allows users to save raw data sets for import into other analysispackages. Once saved, you may recall it at any time and the software will configure the settings to matchthe previously taken data set.
On the tabbed browser at the bottom, select the File Save tab. Once there make sure the File CaptureSelector is set to capture a text file. You may also change the default directory path and the data format toeither decimal or hexadecimal.
On the Data Capture Selector, scroll through the list and select Read From File. Once selected, click onthe red circular Acquire Data button and it prompts you for a text file to read in. Select the appropriate textfile and the saved date set will be redisplayed.
Similar to saving a data set, a screen capture can be performed by the following method. First, on thetabbed browser at the bottom, select the File Save tab. Change the File Capture Selector to Screen.There are three different picture formats supported: bmp, png, and jpg all of which can be selected by theImage File Type control. When you are ready to acquire the screen, click on the red circular button, SaveData.
SLAU155 – August 2005 Saving and Recalling Data to a File 13

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Performing a Screen Capture
Saving and Recalling Data to a File14 SLAU155 – August 2005

Chapter 6SLAU155 – August 2005
Exiting the Program
While there is more than one way to exit the TSW1100 software package, it is advised to click on the redcircular Exit button located below the graph. In doing so, all control values will be saved and recordedsuch that the next time you open the program it will have the defaults set to when you last used theprogram.
SLAU155 – August 2005 Exiting the Program 15

EVM IMPORTANT NOTICE
Texas Instruments (TI) provides the enclosed product(s) under the following conditions:This evaluation kit being sold by TI is intended for use for ENGINEERING DEVELOPMENT OREVALUATION PURPOSES ONLY and is not considered by TI to be fit for commercial use. Assuch, the goods being provided may not be complete in terms of required design-, marketing-,and/or manufacturing-related protective considerations, including product safety measures typi-cally found in the end product incorporating the goods. As a prototype, this product does not fallwithin the scope of the European Union directive on electromagnetic compatibility and thereforemay not meet the technical requirements of the directive.Should this evaluation kit not meet the specifications indicated in the EVM User's Guide, the kitmay be returned within 30 days from the date of delivery for a full refund. THE FOREGOINGWARRANTY IS THE EXCLUSIVE WARRANTY MADE BY SELLER TO BUYER AND IS IN LIEUOF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANYWARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE.The user assumes all responsibility and liability for proper and safe handling of the goods. Further,the user indemnifies TI from all claims arising from the handling or use of the goods. Please beaware that the products received may not be regulatory compliant or agency certified (FCC, UL,CE, etc.). Due to the open construction of the product, it is the user's responsibility to take anyand all appropriate precautions with regard to electrostatic discharge.EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER PARTYSHALL BE Liable to the other FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUEN-TIAL DAMAGES.
TI currently deals with a variety of customers for products, and therefore our arrangement with theuser is not exclusive.TI assumes no liability for applications assistance, customer product design, softwareperformance, or infringement of patents or services described herein.Please read the EVM User's Guide and, specifically, the EVM Warnings and Restrictions notice inthe EVM User's Guide prior to handling the product. This notice contains important safetyinformation about temperatures and voltages. For further safety concerns, please contact the TIapplication engineer.Persons handling the product must have electronics training and observe good laboratory practicestandards.
No license is granted under any patent right or other intellectual property right of TI covering orrelating to any machine, process, or combination in which such TI products or services might beor are used.
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EVM WARNINGS AND RESTRICTIONS
It is important to operate this EVM within the input voltage range of xxx V to xxx V and the outputvoltage range of xxx V to xxx V.Exceeding the specified input range may cause unexpected operation and/or irreversible damageto the EVM. If there are questions concerning the input range, please contact a TI fieldrepresentative prior to connecting the input power.

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Performing a Screen Capture
EVM WARNINGS AND RESTRICTIONS (continued)
Applying loads outside of the specified output range may result in unintended operation and/orpossible permanent damage to the EVM. Please consult the EVM User's Guide prior toconnecting any load to the EVM output. If there is uncertainty as to the load specification, pleasecontact a TI field representative.During normal operation, some circuit components may have case temperatures greater than xxxC. The EVM is designed to operate properly with certain components above xxx C as long as theinput and output ranges are maintained. These components include but are not limited to linearregulators, switching transistors, pass transistors, and current sense resistors. These types ofdevices can be identified using the EVM schematic located in the EVM User's Guide. Whenplacing measurement probes near these devices during operation, please be aware that thesedevices may be very warm to the touch.
Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265Copyright © 2005, Texas Instruments Incorporated
SLAU155 – August 2005 Exiting the Program 17

IMPORTANT NOTICE
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