NI SPEEDY-33 User Manual Signal Processing Engineering Educational Device for Youth NI SPEEDY-33 User Manual June 2008 371577D-01
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Important Information Warranty The NI SPEEDY-33 is warranted against defects in materials and workmanship for a period of one year from the date of shipment, as evidenced by receipts or other documentation. National Instruments will, at its option, repair or replace equipment that proves to be defective during the warranty period. This warranty includes parts and labor.
Compliance Compliance with FCC/Canada Radio Frequency Interference Regulations Determining FCC Class The Federal Communications Commission (FCC) has rules to protect wireless communications from interference. The FCC places digital electronics into two classes. These classes are known as Class A (for use in industrial-commercial locations only) or Class B (for use in residential or commercial locations). All National Instruments (NI) products are FCC Class A products.
Conventions The following conventions are used in this manual: <> Angle brackets that contain numbers separated by an ellipsis represent a range of values associated with a bit or signal name—for example, AO <3..0>. » The » symbol leads you through nested menu items and dialog box options to a final action. The sequence File»Page Setup»Options directs you to pull down the File menu, select the Page Setup item, and select Options from the last dialog box.
Contents Chapter 1 NI SPEEDY-33 Overview Theory of Operation.......................................................................................................1-2 Safety Information .........................................................................................................1-2 Installation .....................................................................................................................1-4 Software, Drivers, and Examples ...................................................
Contents Appendix A Specifications Appendix B Technical Support and Professional Services Glossary Index NI SPEEDY-33 User Manual x ni.
NI SPEEDY-33 Overview 1 The NI SPEEDY-33 (Signal Processing Engineering Educational Device for Youth) featuring the Texas Instruments VC33 DSP is a self-contained, high-performance, programmable product for signal processing applications. It boasts an easy-to-use, fast Digital Signal Processor (DSP) along with a number of features important to many signal processing applications.
Chapter 1 NI SPEEDY-33 Overview Theory of Operation The NI SPEEDY-33 is a low-cost, high-performance floating-point TMS320VC33-based DSP system connected to a standard PC through the USB port. This easy-to-use system supports a variety of DSP processing, including audio applications with two input/output analog channels sampled at 48 kHz, and other applications with onboard digital I/O for controlling motors/servos. The NI SPEEDY-33 features 34 K × 32 words of on-chip memory.
Chapter 1 NI SPEEDY-33 Overview Operate the module only at or below Pollution Degree 2. Pollution is foreign matter in a solid, liquid, or gaseous state that can reduce dielectric strength or surface resistivity. The following is a description of pollution degrees: • Pollution Degree 1 means no pollution or only dry, nonconductive pollution occurs. The pollution has no influence. • Pollution Degree 2 means that only nonconductive pollution occurs in most cases.
Chapter 1 NI SPEEDY-33 Overview refers to local-level electrical distribution, such as that provided by a standard wall outlet (for example, 115 AC voltage for U.S. or 230 AC voltage for Europe). Examples of Measurement Category II are measurements performed on household appliances, portable tools, and similar modules. • Measurement Category III is for measurements performed in the building installation at the distribution level.
Chapter 1 NI SPEEDY-33 Overview Example applications for the NI SPEEDY-33 can be found in the NI Example Finder; in LabVIEW, select Help»Find Examples. All NI user documentation is available on the National Instruments Web site at ni.com/manuals.
2 NI SPEEDY-33 Functional Description and Interface This chapter describes the NI SPEEDY-33 hardware functions and details of interfacing and configuring the device. Figure 2-1 shows the NI SPEEDY-33 layout.
Chapter 2 NI SPEEDY-33 Functional Description and Interface DSP The digital signal processor on the NI SPEEDY-33 is a powerful floating-point, flexible, and easy-to-use processor designed by Texas Instruments. The VC33 DSP is capable of high performance mathematical operations. It is a 32-bit, floating-point processor manufactured in 0.18 μm four-level-metal CMOS (TImeline™) technology, and is part of the SM320C3x™ generation of DSPs from Texas Instruments.
Chapter 2 NI SPEEDY-33 Functional Description and Interface Figure 2-2 shows the architectural details of the VC33 DSP.
Chapter 2 NI SPEEDY-33 Functional Description and Interface Memory Map The DSP runs in microcomputer/bootloader mode on the NI SPEEDY-33. The memory map for the NI SPEEDY-33 is shown in Figure 2-3.
Chapter 2 NI SPEEDY-33 Functional Description and Interface Memory There are two types of available memory on the NI SPEEDY-33, on-chip memory and flash memory. On-Chip Memory The DSP uses on-chip memory for algorithms because of its fast speed. There are 136 KB of on-chip RAM that the DSP can access with zero wait states. This memory is used for both program and data space.
Chapter 2 NI SPEEDY-33 Functional Description and Interface Power Port Caution Do not connect the power source to the power port while the NI SPEEDY-33 device is connected to the PC. The power port (J10) can supply the NI SPEEDY-33 with external power when operating the device in standalone mode, without being connected to the PC through USB. When power is supplied to the device, the power LED lights.
Chapter 2 NI SPEEDY-33 Functional Description and Interface Onboard Microphones Two onboard microphones (U2 and U5) can be used in applications requiring audio input or involving audio signal phase difference measurements. When the microphones are used, the input gain level of each microphone should be set to the microphone level setting described in the Audio Input Level Jumpers section.
Chapter 2 NI SPEEDY-33 Functional Description and Interface Stereo A/D, D/A (Analog Input, Analog Output) The 16-bit stereo audio CODEC included on the NI SPEEDY-33 allows for up to 48 kHz dual-channel sampling on the input signal. Software components are included in the LabVIEW DSP Module to allow 8 kHz, 18 kHz, 24 kHz, 36 kHz, and 48 kHz sample rates to be used in applications.
Chapter 2 NI SPEEDY-33 Functional Description and Interface The digital I/O signals are 3.3 V, but the inputs are 5 V tolerant. Although not required, pin 20 (ResetLow) can be driven low to reset the DSP; it is pulled high by the NI SPEEDY-33. Standard Expansion Analog I/O Connectors A set of two connectors, J4 and J6, make up the standard expansion analog I/O connectors, that can be used for optional daughter modules.
Chapter 2 NI SPEEDY-33 Functional Description and Interface Jumpers Audio Input Level Jumpers The audio input level jumpers (J1, J2) control the amount of gain applied to the input audio signals. The microphone level setting has the highest gain for the onboard microphones (U2, U5), the line level setting has less gain and is appropriate for the line level audio interface (for example, CD players, MP3 players, and so on).
Chapter 2 NI SPEEDY-33 Functional Description and Interface Flash Boot Jumper The flash boot jumper (J12) controls whether the DSP will attempt to boot from the flash memory. The default setting is for the DSP to boot from flash memory, described in the Flash Memory section. You must set the NI SPEEDY-33 to the enable flash boot setting to run the device in standalone mode. If the NI SPEEDY-33 will only be used with the USB connection to PC, the flash boot can be disabled, though it is not recommended.
Chapter 2 NI SPEEDY-33 Functional Description and Interface NI SPEEDY-33 Enclosure The NI SPEEDY-33 comes encased in an enclosure for durability. To access hardware features such as the jumpers or the extension I/O connectors, remove the SPEEDY-33 board from the enclosure. To access the SPEEDY-33 board, remove all screws from either the front or back end of the enclosure and remove the metal end plate.
Chapter 2 NI SPEEDY-33 Functional Description and Interface Reset Button The reset button (SW1) is a small push button on the NI SPEEDY-33 that manually resets the DSP. The DSP needs to be reset in the event of a software or hardware freeze. Audio Out Audio In 1 1 Reset Button Figure 2-6.
A Specifications Specifications listed below are typical at 25 °C unless otherwise noted. Analog I/O Input ....................................................... Stereo 48 kHz 16 bit A/D Output..................................................... Stereo 48 kHz 16 bit D/A Supported sampling rates ....................... 8 kHz, 18 kHz, 24 kHz, 36 kHz, 48 kHz Maximum working voltage for analog inputs (signal + common mode) .......................
Appendix A Specifications DSP DSP .........................................................TMS320VC33 • High-performance floating-point digital signal processor (DSP) – 150 million floating-point operations per second (MFLOPS) – 75 million instructions per second (MIPS) • 34 K × 32 bit (1.
Appendix A Specifications Physical PCB only Dimensions ..................................... 8.89 cm × 12.7 cm × 1.91 cm (3.5 in. × 5 in. × 0.75 in.) Weight............................................. 87.9 g (3.1 oz) With enclosure Dimensions ..................................... 11.1 cm × 14.5 cm × 3.9 cm (4.4 in. × 5.7 in. × 1.5 in.) Weight............................................. 380 g (12.8 oz) USB connector ....................................... Type B USB port, conforms to USB Specification 1.
Appendix A Specifications Safety This product is designed to meet the requirements of the following standards of safety for electrical equipment for measurement, control, and laboratory use: • IEC 61010-1, EN 61010-1 • UL 61010-1, CSA 61010-1 Note For UL and other safety certifications, refer to the product label, or visit ni.com/ certification, search by model number or product line, and click the appropriate link in the Certification column.
Appendix A Specifications Environmental Management National Instruments is committed to designing and manufacturing products in an environmentally responsible manner. NI recognizes that eliminating certain hazardous substances from our products is beneficial not only to the environment but also to NI customers. For additional environmental information, refer to the NI and the Environment Web page at ni.com/environment.
Technical Support and Professional Services B Visit the following sections of the award-winning National Instruments Web site at ni.com for technical support and professional services: • Support—Technical support resources at ni.com/support include the following: – Self-Help Technical Resources—For answers and solutions, visit ni.
Appendix B Technical Support and Professional Services • Declaration of Conformity (DoC)—A DoC is our claim of compliance with the Council of the European Communities using the manufacturer’s declaration of conformity. This system affords the user protection for electromagnetic compatibility (EMC) and product safety. You can obtain the DoC for your product by visiting ni.com/certification. If you searched ni.
Glossary Symbol Prefix Value μ micro 10 – 6 m milli 10 –3 k kilo 10 3 M mega 10 6 Numbers/Symbols % percent + positive of, or plus – negative of, or minus ± plus or minus < less than > greater than ≤ less than or equal to ≥ greater than or equal to / per ° degree Ω ohm +5 V (signal) +5 VDC source signal © National Instruments Corporation G-1 NI SPEEDY-33 User Manual
Glossary A A amperes A/D Analog-to-Digital AC Alternating Current ADC Analog-to-Digital Converter—An electronic device, often an integrated circuit, that converts an analog voltage to a digital number. ADC resolution The resolution of the ADC measured in bits. A 16-bit ADC has a higher resolution, and thus a higher degree of accuracy, than a 12-bit ADC. ADE Application development environment such as LabVIEW, LabWindows™/CVI™, BridgeVIEW, Visual Basic, C, and C++.
Glossary bus The group of conductors that interconnect individual circuitry in a computer. Typically, a bus is the expansion interface to which I/O or other devices are connected. Examples of PC buses are the ISA bus and PCI bus. BW bandwidth byte eight related bits C C Celsius CE European emissions control standard CFR Code of Federal Regulations CH channel channel Pin or wire lead to which you apply or from which you read the analog or digital signal.
Glossary D D/A Digital-to-Analog DAQ data acquisition—(1) Collecting and measuring electrical signals from sensors, transducers, and test probes or fixtures and processing the measurement data using a computer. (2) Collecting and measuring the same kinds of electrical signals with A/D and/or DIO boards plugged into a computer, and possibly generating control signals with D/A and/or DIO boards in the same computer. DAQ device A data acquisition device.
Glossary DIO Digital Input/Output DMA Direct Memory Access—A method by which data is transferred to/from computer memory from/to a device or memory on the bus while the processor does something else. DMA is the fastest method of transferring data to/from computer memory. DR Data Receive drivers/driver software Software that controls a specific hardware device such as a DAQ device.
Glossary flash A form of rewritable memory chip that, unlike a Random Access Memory chip, holds content without maintaining a power supply. frequency The number of alternating signals that occur per unit time. ft feet H h hour Hz hertz—Cycles per second of a periodic signal; the unit of measure for frequency. I I/O Input/Output—The transfer of data to/from a computer system involving communications channels, operator interface devices, and/or data acquisition and control interfaces. in.
Glossary K k kilo—The standard metric prefix for 1,000, or 103, used with units of measure such as volts, hertz, and meters. K (1) kelvin (2) kilo—The prefix for 1,024, or 210, used with B in quantifying data or computer memory. kbytes/s A unit for data transfer that means 1,000 or 103 bytes/s. kS 1,000 samples L LabVIEW A graphical programming language. LabVIEW DSP Module A fully-featured graphical DSP design tool based on LabVIEW.
Glossary memory (1) The high-speed electronic storage components of a computer or instrument product. Typically, access times of electronic memories are less than 100 ns, while hard disk drives have access times in the range of 10 ms. The most common form of electronic memory is Random Access Memory (RAM). (2) The chips in a computer that can store data when the computer is powered on. Different from storage devices, such as disks or tapes. memory buffer See buffer.
Glossary peripherals Devices that can be connected to your computer or the NI SPEEDY-33. Common peripheral devices are USB DAQ cards, printers, and keyboards. port (1) A communications connection on a computer or a remote controller. (2) A digital port, consisting of four or eight lines of digital input and/or output. R ROM Read-Only Memory S s seconds S Samples S/s Samples per second—Used to express the rate at which a DAQ device samples an analog signal.
Glossary V V volts VI Virtual Instrument—(1) A combination of hardware and/or software elements, typically used with a PC, that has the functionality of a classic stand-alone instrument. (2) A LabVIEW software module (VI), which consists of a front panel user interface and a block diagram program. volatile memory Memory that loses its contents when the power is turned off. W word NI SPEEDY-33 User Manual The standard number of bits that a processor or memory manipulates at one time.
Index A simple expansion I/O connector pinout (figure), 2-8 switch input port, 2-7 digital signal processor.
Index K flash write enable jumper, 2-11 write protection, 2-11 flash write enable jumper, 2-11 settings (table), 2-11 functional description, 2-1 KnowledgeBase, B-1 L LED digital output port, 2-7 power, 2-5 H hardware installation, 1-4 help, technical support, B-1 M memory, 2-5 flash, 2-5 on-chip, 2-5 memory map, 2-4 (figure), 2-4 microphone external, 2-6 onboard, 2-7 mode, standalone, 1-2 I I/O connector, 2-8 simple expansion digital, 2-8 standard expansion analog, 2-9 installation, 1-4 safety infor
Index software, 1-4 software examples, 1-4 stereo A/D, D/A, 2-8 switch input port, 2-7 theory of operation, 1-2 NI support and services, B-1 software examples, 1-4 NI resources, B-1 speakers, using, 2-6 standalone mode, 1-2, 2-6 standard expansion analog I/O connectors, 2-9 stereo A/D, D/A, 2-8 amplified speakers, using, 2-6 input port, 2-6 output port, 2-6 support, technical, B-1 SW1 (reset button), 2-13 SW2 (switch input port), 2-7 switch input port, 2-7 O onboard microphone, 2-7 configuring microphone
