Smacq Technologies Co., Ltd. USB-1000 Series Manual de usuario

USB-1000 Series Multi-Function

Data Acquisition Devices

USB-1252/USB-1252A

User Manual

Rev: C

Smacq Technologies Co., Ltd.

www.smacq.com

www.smacq.cn

Contents

1. Product Overview ..........................................................................................................................4

1.1. Overview .................................................................................................................................4

1.2. Block Diagram.........................................................................................................................4

1.3. Product Features ......................................................................................................................4

1.4. Product Specifications.............................................................................................................5

Analog Input ...................................................................................................................5

Digital IO ........................................................................................................................6

Counter............................................................................................................................6

Bus Interface ...................................................................................................................6

Power Requirements .......................................................................................................6

Other Specifications........................................................................................................6

2. Description on Appearance and Signal Connection....................................................................8

2.1. Appearance..............................................................................................................................8

2.2. Signal Connection .................................................................................................................10

Connecting Analog Input Signal ...................................................................................10

Connecting Digital IO Signals and Counter..................................................................12

2.3. USB Cable Reinforcement ....................................................................................................14

3. Installation and Testing ...............................................................................................................14

3.1. Driver Installation..................................................................................................................14

3.2. Hardware Installation ............................................................................................................15

4. Analog Input.................................................................................................................................16

4.1. Overview ...............................................................................................................................16

4.2. Input Range Description........................................................................................................17

Single-Ended Mode.......................................................................................................17

Differential Mode..........................................................................................................17

4.3. Description on Multi-Channel Scanning ...............................................................................17

Sampling rate ................................................................................................................17

Input Ranges .................................................................................................................17

4.4. Trigger Sources......................................................................................................................18

4.5. Analog Input Mode................................................................................................................18

4.6. Floating Signal Source...........................................................................................................19

Using Differential Connections for Floating Signal Source..........................................19

Using Non-Referenced Single-Ended (NRSE) Connections for Floating Signal Sources

......................................................................................................................................22

Using Referenced Single-Ended (RSE) Connections for Floating Signal Sources.......23

4.7. Ground-Referenced Signal Source ........................................................................................24

Using Differential Connections for Ground-Referenced Signal Source .......................24

Using Non-Referenced Single-Ended (NRSE) for Ground-Referenced Signal Sources

......................................................................................................................................25

Using Referenced Single-Ended (RSE) for Ground-Referenced Signal Sources..........26

5. Digital IO ......................................................................................................................................26

5.1. Overview ...............................................................................................................................26

5.2. Connecting Digital I/O Signal ...............................................................................................26

6. Counter .........................................................................................................................................27

6.1. Overview ...............................................................................................................................27

6.2. Event counter.........................................................................................................................28

6.3. Period/Positive/Negative Pulse Width Measurement ............................................................28

6.4. Connecting Counter Signals..................................................................................................28

7. Programming Instructions..........................................................................................................29

7.1. Overview ...............................................................................................................................29

7.2. Basic functions ......................................................................................................................29

FindUSBDAQ() ............................................................................................................29

OpenDevice()................................................................................................................30

CloseDevice()................................................................................................................30

ResetDevice()................................................................................................................30

7.3. Analog Input Related Functions ............................................................................................30

SetUSB1AiRange().......................................................................................................30

SetSampleRate()............................................................................................................31

SetChanMode().............................................................................................................31

SetChanSel() .................................................................................................................31

SetSoftTrig() .................................................................................................................32

7.4. Digital IO Related Functions.................................................................................................32

SetDioOut()...................................................................................................................32

7.5. Counter Related Functions ....................................................................................................33

SetCounter()..................................................................................................................33

StartCounter()................................................................................................................33

ClearCounter() ..............................................................................................................33

7.6. Read Data Control Functions.................................................................................................34

StartRead() ....................................................................................................................34

StopRead() ....................................................................................................................34

GetAiChans() ................................................................................................................34

GetDioIn().....................................................................................................................35

GetCounter() .................................................................................................................35

GetCtrTime().................................................................................................................35

ClearBufs()....................................................................................................................36

TransDioIn()..................................................................................................................36

7.7. Error Code.............................................................................................................................36

7.8. Instructions for LabVIEW Developecr..................................................................................37

7.9. Instructions for MATLAB Developer....................................................................................37

8. Ordering Information..................................................................................................................38

9. Service and Warranty..................................................................................................................39

10. Revision History...........................................................................................................................40

1. Product Overview

1.1. Overview

The new USB-1000 series multi-function data acquisition (DAQ) device provides a new option

for convenience and quick start of data acquisition application. Its exquisite shape provides super

portable and very flexible installation.

USB-1000 series DAQ devices provide 12-bit, up to 500kS/s sampling rate, and up to 16 analog

signal acquisition channels. You can set the range as 0~10V or ± 5V via software.

With 16 digital input/output channels and 4 counter channels, USB-1000 series DAQ device offers

you the flexibility to build automatic control system of any size.

1.2. Block Diagram

1.3. Product Features

12-bit analog input (AI) resolution.

Up to 500kS/s analog input (AI) sampling rate. (Up to 200kS/s with multiple channels

enabled.)

Sampling period configurable by steps of 20ns.

Up to 16 single-ended AI channels or 8 differential AI channels configurable via

software.

Figure 1. Block Diagram of USB-1000 series DAQ device

Digital IO

Counter

USB bus

0~10V or ±5V configurable via software.

Onboard 16K sampling point FIFO buffer.

Up to 16 digital input (DI) channels and 16 digital output (DO) channels.

Up to four 32-bit counter channels.

LabVIEW, Visual Studio and MATLAB development support.

1.4. Product Specifications

The following product specifications, unless otherwise stated, are measured at the temperature of

25°C and the humidity of 40%.

Analog Input

Number of AI Channels

16 single-ended channels or 8 differential channels

configurable via software.

Synchronous Sampling

AI Resolution

12-bit

Converter Type

SAR

Sampling Rate

Single-channel acquisition: 500kS/s maximum

Multiple-channel acquisition: 200kS/s maximum

Timing Resolution

20ns

AI FIFO Buffer

16k sampling point

Range

0~10V or -5~5V configurable via software.

Safe Voltage

±15V, the DAQ device may be damaged if the input voltage

exceeds this safe voltage.

Input Impedance

>1GΩ (Power On)

Input Coupling Mode

Trigger Mode

Software trigger

System Noise

NRSE 0~10V range: 0.15mVrms

NRSE ±5V range: 0.3mVrms

DIFF 0~10V range: 0.2mVrms

DIFF ±5V range: 0.4mVrms

AbsoluteAccuracy

NRSE 0~10V range: 2.8mV

NRSE ±5V range: 3mV

DIFF 0~10V range: 3mV

DIFF ±5V range: 4mV

Digital IO

Number of DO Channels

High Level Output Voltage

3.0~3.4V

Low Level Output Voltage

0~0.1V

Number of DI Channels

Low Level Input Voltage

3.3~5V

High Level Input Voltage

0~0.5V

Counter

Number Of Counters

Resolution

32-bit

Counter Measurement

Edge Count,

Counting Direction

Count Up

Maximum Input Frequency

1MHz

Bus Interface

USB Interface Specification

USB 2.0 High-Speed Interface

USB Interface Connector

USB Series Type-B Connector

Power Requirements

USB Bus Power Supply

4.75~5.25VDC

Current Consumption

About 300mA

Other Specifications

Dimensions (mm)

Without Connector: 156*102*26

With Connector:161*102*26

Weight

About 420g

Analog Channel Signal Connector

10-PIN Screw Terminal Connector

Digital IO and Counter Connector

40-PIN IDC Connector

Operating Environment

0°C ~55°C

5%RH~90%RH, Non-Condensing

Storage Environment

-40°C ~85°C

5%RH~90%RH, Non-Condensing

2. Description on Appearance and Signal

Connection

2.1. Appearance

USB-1000 series DAQ device uses metal shielding enclosure, with AI signals connected with

plug-in screw terminal connectors, digital IO signals and counter signals connected with 40-PIN

IDC connectors, and USB communication interface connected with USB series type-B connector.

Figure 2 shows the overall appearance and dimensions (in mm) of the product.

Sensors generate electrical signals to measure physical phenomena, such as temperature, force,

sound, or light. Strain gauges, thermocouples, thermistors, angular encoders, linear encoders, and

resistance temperature detectors (RTDs) are commonly used sensors.

Figure 2. External View of USB-1252 DAQ Device

2.2. Signal Connection

Connecting Analog Input Signal

The screw terminal connector, located in front of the DAQ device, is used for connecting AI

signals. Figure 3 and Table 1 show its pin distribution and corresponding signals. Unused AI

channels should be grounded so as to reduce system noise and achieve higher stability.

Figure 3. External View of USB-1252A DAQ Device

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