Adlink USB-1903 User Manual

Advance Technologies; Automate the World.Manual Rev.: 2.00Revision Date: August 31, 2011Part No: 50-1Z084-2000USB-1900 Series16-bit 250kS/s USB 2.0

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xiUSB-1900 SeriesList of FiguresFigure 2-1: USB-1902 Module Rear View... 11Figure 2-2: USB-1902 Module Side View ...

xiiFigure 4-17: Infinite Iteration Waveform Generation ... 55Figure 4-18: Mode 1-Simple Gated-Event Calculation... 58

xiiiUSB-1900 SeriesList of TablesTable 2-1: USB-1901/1902 pin assignment insingle-end AI mode...

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Introduction 1USB-1900 Series1 Introduction1.1 OverviewThe USB-1900 Series of 16-bit 250 kS/s USB 2.0-based high-per-formance DAQ modules includes mo

2Introduction1.3 ApplicationsX Automotive testingX Waveform generationX Laboratory researchX Biotech measurementX I/O control

Introduction 3USB-1900 Series1.4 Specifications1.4.1 General SpecificationsI/O SpecificationsNumber of channels 8-CH programmable function digital in

4Introduction1.4.2 Analog InputAnalog Input (AI)USB-1901/1902 USB-1903 GeneralNumber of channels: (programmable)Voltage input16 single-end (SE) or 8 p

Introduction 5USB-1900 SeriesElectrical Offset error (gain=1) ±0.1 mV (typical) ±0.01 mA (typical)Gain error (gain=1) ±0.05% of FSR (typical)±0.05%

Revision HistoryRevision Release Date Description of Change(s)2.00 Aug 31, 2011 Initial release

6Introduction1. -3dB small signal bandwidth: (Typical, 25°C, single-ended)2. System Noise, SFDR, SINAD, THD, SNR (Typical, 25°C, sin-gle-ended)3. Effe

Introduction 7USB-1900 Series1.4.3 Analog OutputAnalog Output (AO)Number of channels 2D/A converter DAC8871 or equivalentMaximum update rage 1M sampl

8Introduction1.5 Unpacking ChecklistBefore unpacking, check the shipping carton for any damage. Ifthe shipping carton and/or contents are damaged, inf

Introduction 9USB-1900 Series1.7.2 DAQPilotDAQPilot is a SDK with a graphics-driven interface for variousapplication development environments. DAQPil

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Hardware Information 11USB-1900 Series2 Hardware InformationThis chapter provides information regarding dimensions, connec-tion, accessories, and pin

12 Hardware InformationFigure 2-2: USB-1902 Module Side View

Hardware Information 13USB-1900 SeriesFigure 2-3: USB-1902 Module Front View41.3114

14 Hardware Information2.1.2 Module StandThe multi-function USB-1900 Series stand is compatible withdesk, rail, or wall mounting. To fix the module in

Hardware Information 15USB-1900 SeriesFigure 2-6: Module in Stand Front View114.3

iiiUSB-1900 SeriesPrefaceCopyright 2011 ADLINK Technology Inc.This document contains proprietary information protected by copy-right. All rights are

16 Hardware InformationFigure 2-7: Module Stand Top View20.420.4B26

Hardware Information 17USB-1900 SeriesFigure 2-8: Module Stand Side Cutaway ViewFigure 2-9: Module Stand Front View5.891.563.4100

18 Hardware Information2.1.3 Rail MountingThe multi-function stand can be mounted on the DIN rail using therail-mount kit as shown.Figure 2-10: Rail M

Hardware Information 19USB-1900 SeriesFigure 2-12: Module Rail-Mounted

20 Hardware Information2.1.4 Wall MountingThe multi-function stand can be fixed to a wall using four flushhead screws as shown. The four screw holes s

Hardware Information 21USB-1900 Series2.2 Connector Pin AssignmentThe USB-1900 Series module is equipped with 40-pin removablescrew-down terminal con

22 Hardware Information*NC for USB-1901Table 2-2: USB-1901/1902 pin assignment in pseudo-differential AI modePin Function Pin Function20 ECLK 40 AO

Hardware Information 23USB-1900 SeriesTable 2-3: USB-1903 pin assignmentPin Function Pin Function40 ECLK 20 AOTG39 NC 19 AITG38 NC 18 GPI737 GPO3

24 Hardware Information2.2.1 Connector Signal DescriptionTable 2-4: CN1/CN2 I/O Signal Description2.3 Analog Input Signal ConnectionThe USB-1901 and

Hardware Information 25USB-1900 SeriesTo avoid ground loops and obtain more accurate measurementfrom the A/D conversion, it is important to understan

ivUsing this ManualAudience and ScopeThe USB-1900 Series User’s Manual is intended for hardwaretechnicians and systems operators with knowledge of ins

26 Hardware InformationThis mode is suitable for connections with floating signalsources.Figure 2-15: Floating source w/ RSE input connectionsNon-Ref

Hardware Information 27USB-1900 SeriesFigure 2-16: GRND-Referenced Sources w/ NRSE InputsPseudo-Differential Input ModePseudo-differential input mode

28 Hardware InformationConnection of a floating signal source to the USB-1900 Seriesmodule in pseudo-differential input mode is further shown. Forfloa

Hardware Information 29USB-1900 SeriesThe negative end of the differential pair is connected to the sys-tem ground after current-to-voltage conversio

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Installing the USB-1900 Series Module 31USB-1900 Series3 Installing the USB-1900 Series Module3.1 Connecting the USB-1900 Series Module1. Turn on you

32 Installing the USB-1900 Series ModuleIf the USB-1900 Series module cannot be detected, the powerprovided by the USB port may be insufficient. The U

Installing the USB-1900 Series Module 33USB-1900 Series3.3 Hardware ConfigurationAll remaining hardware configurations are softwareprogrammable, incl

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Operation 35USB-1900 Series4 OperationOperation of the USB-1900 Series is described here to assist inconfiguration and programming of the module. Fun

vUSB-1900 SeriesConventionsTake note of the following conventions used throughout thismanual to make sure that users perform certain tasks andinstruc

36 OperationFigure 4-1: Functional Block Diagram (USB-1902)4.2 A/D ConversionWhen using an A/D converter, the properties of the signal to bemeasured m

Operation 37USB-1900 Series4.2.1 Analog Input CircuitryFigure 4-2: Analog Input4.2.2 AI Data FormatThe acquired 16-bit A/D data is 2’s complement cod

38 Operation4.2.3 Software Conversion with Polling Data Transfer Acquisition Mode (Software Polling)Generally the most convenient way to acquire a sin

Operation 39USB-1900 SeriesContinuous Scanning with Internal Hardware TimerThis mode is recommended if a fixed and precise A/D samplingrate is requir

40 OperationTimebase Clock SourceIn scan acquisition mode, all A/D conversions start with the out-put of counters using the timebase as the clock sour

Operation 41USB-1900 SeriesExample:1. Set:X SI2_counter = 320X SI_counter = 1280X PSC_counter = 3X NumChan_counter = 4X timebase = Internal clock sou

42 Operation4.3.2 External Analog TriggeringThe analog multiplexer can select one input channel as the analogtrigger source. That is, one of 16 input

Operation 43USB-1900 SeriesFigure 4-5: Above-High Analog Triggering4.3.3 External Digital TriggeringAn external digital trigger occurs when a rising

44 Operation4.4.1 Post-Trigger Acquisition Mode (no retriggering)Post-trigger acquisition is indicated in applications where data is tobe collected af

Operation 45USB-1900 SeriesUSB-1900 Series starts to acquire data. The total acquired datalength = NumChan_counter * PSC_counter.Figure 4-8: Delayed

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46 Operationnals occurring before the first two scans are completed will beignored). When the re-trigger signal occurs, two more scans areperformed. T

Operation 47USB-1900 SeriesTotal acquired data length = NumChan_counter * PSC_counter.Figure 4-10: Gated Trigger4.5 D/A ConversionFor complex applica

48 Operation4.5.1 Bipolar Output ModesThe USB-1900 Series supports a maximum ±10 V voltage output.The relationship of straight binary coding between t

Operation 49USB-1900 SeriesFigure 4-11: Waveform Generation for Two Channel UpdateData format in FIFO is shown.Figure 4-12: FIFO Data In/Out Structur

50 OperationWaveform Generation with Internal Hardware TimerSix counters interact with the waveform, generating differentDAWR timings to produce vario

Operation 51USB-1900 SeriesFigure 4-13: Waveform Generation Hardware TimingWaveform Generation TriggeringThe USB-1902/1903 supports flexible trigger

52 OperationExternal Digital TriggeringAn external digital trigger occurs when a rising edge or fallingedge is detected on the digital signal connecte

Operation 53USB-1900 SeriesDelayed-Trigger Waveform GenerationDelayed-Triggering is indicated when waveform generation isto be delayed after the trig

54 OperationAfter two trigger signals, as specified in Trig_Counter, no moretrigger signals will be accepted unless a trigger reset commandis executed

Operation 55USB-1900 SeriesAn onboard data FIFO buffers the waveform patterns for wave-form generation. If the size of a single waveform is less than

viiUSB-1900 SeriesTable of ContentsRevision History... iiPreface...

56 OperationIn conjunction with different trigger modes and counter setups, youcan manipulate a single waveform to generate different and morecomplex

Operation 57USB-1900 Series4.6.2 General Purpose Timer/CounterThe USB-1900 Series is equipped with two general purpose timer/counter sets featuring:X

58 Operationor down (high: count up; low: count down), while the GPTC_GATEinput is a control signal acting as a counter enable or counter trig-ger sig

Operation 59USB-1900 Series4.8.2 Mode 2: Single Period MeasurementThe counter calculates the period of the signal on GPTC_GATE interms of GPTC_CLK. T

60 OperationFigure 4-20: Mode 3-Single Pulse-Width Measurement4.8.4 Mode 4: Single-Gated Pulse GenerationThis mode generates a single pulse with progr

Operation 61USB-1900 Seriesperiods of the GPTC_CLK input. When the first GPTC_GATEedge triggers the single pulse, GPTC_GATE has no effect untilsoftwa

62 Operation4.8.7 Mode 7: Single-Triggered Continuous Pulse GenerationThis mode is similar to Mode 5 except that the counter generates contin-uous per

Operation 63USB-1900 Seriesclock frequency. The maximum counting width is 32-bit. Decreaseof the counter value in Edge Separation Measurement mode is

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Calibration 65USB-1900 Series5 CalibrationThis chapter introduces the calibration process to optimize ADconversion and avoid DA output errors.5.1 Loa

viii3 Installing the USB-1900 Series Module... 313.1 Connecting the USB-1900 Series Module ... 313.2 De

66 Calibration5.3 Saving Calibration ConstantsFactory-calibrated constants are permanently stored in a bank ofthe onboard EEPROM and cannot be modifie

67USB-1900 SeriesImportant Safety InstructionsFor user safety, please read and follow all instructions,WARNINGS, CAUTIONS, and NOTES marked in this

68X Never attempt to fix the equipment. Equipment should only be serviced by qualified personnel.A Lithium-type battery may be provided for uninterrup

69USB-1900 SeriesGetting ServiceContact us should you require any service or assistance. ADLINK Technology, Inc. Address: 9F, No.166 Jian Yi Road,

70ADLINK Technology (Europe) GmbH Address: Nord Carree 3, 40477 Duesseldorf, Germany Tel: +49-211-495-5552 Fax: +49-211-495-5557 Email: emea@ad

ixUSB-1900 Series4.8 General Purpose Timer/Counter Modes....... 584.8.1 Mode 1: Simple Gated-Event Counting ......