Dataq DI-2008 Bedienungsanleitung
The way PC-based instrumentation should be
DI-2008
8-Channel USB Voltage and Thermocouple Data Acquisition System
User's Manual
Manual Revision C
Copyright © 2019 by DATAQ Instruments, Inc. The Information contained herein is the exclusive property of
DATAQ Instruments, Inc., except as otherwise indicated and shall not be reproduced, transmitted, transcribed, stored
in a retrieval system, or translated into any human or computer language, in any form or by any means, electronic,
mechanical, magnetic, optical, chemical, manual, or otherwise without expressed written authorization from the com-
pany. The distribution of this material outside the company may occur only as authorized by the company in writing.
DATAQ Instruments' hardware and software products are not designed to be used in the diagnosis and treatment of
humans, nor are they to be used as critical components in any life-support systems whose failure to perform can rea-
sonably be expected to cause significant injury to humans.
DATAQ, the DATAQ logo, and WINDAQ are registered trademarks of DATAQ Instruments, Inc. All rights reserved.
DATAQ Instruments, Inc.
241 Springside Drive
Akron, Ohio 44333 U.S.A.
Telephone: 330-668-1444
Fax: 330-666-5434
Designed and manufactured in the
United States of America
Warranty and Service Policy
Product Warranty
DATAQ Instruments, Inc. warrants that this hardware will be free from defects in materials and workmanship under
normal use and service for a period of 1 year from the date of shipment. DATAQ Instruments' obligations under this
warranty shall not arise until the defective material is shipped freight prepaid to DATAQ Instruments. The only
responsibility of DATAQ Instruments under this warranty is to repair or replace, at its discretion and on a free of
charge basis, the defective material.
This warranty does not extend to products that have been repaired or altered by persons other than DATAQ Instru-
ments employees, or products that have been subjected to misuse, neglect, improper installation, or accident.
DATAQ Instruments shall have no liability for incidental or consequential damages of any kind arising out of the sale,
installation, or use of its products.
Service Policy
1. All products returned to DATAQ Instruments for service, regardless of warranty status, must be on a freight-pre-
paid basis.
2. DATAQ Instruments will repair or replace any defective product within 5 days of its receipt.
3. For in-warranty repairs, DATAQ Instruments will return repaired items to the buyer freight prepaid. Out of war-
ranty repairs will be returned with freight prepaid and added to the service invoice.
DI-2008 Hardware Manual
Table of Contents
v
Table of Contents
Warranty and Service Policy ................................................................................................................ iii
1. Introduction ........................................................................................................................................ 1
Features .............................................................................................................................................. 1
Analog Inputs .................................................................................................................................... 1
Digital I/O .......................................................................................................................................... 1
Software ............................................................................................................................................. 2
WinDaq® Recording and Playback Software ............................................................................ 2
Help ............................................................................................................................................. 2
2. Specifications ...................................................................................................................................... 3
3. Installation .......................................................................................................................................... 7
Install WinDaq Software ................................................................................................................... 7
Connect the Instrument to Your Computer ....................................................................................... 8
4. Controls, Indicators, and Connections ............................................................................................. 9
Mini-B USB Connection ................................................................................................................... 9
Screw Terminals ................................................................................................................................ 9
DI-2008 Signal Connections ....................................................................................................... 10
Connecting Signal Leads ............................................................................................................ 10
Analog Inputs .............................................................................................................................. 11
Gain Settings for Voltage Measurements ................................................................................... 12
Thermocouple Measurements ..................................................................................................... 13
Digital Ports ................................................................................................................................ 14
WinDaq Remote Events (D0 Event) .................................................................................... 14
WinDaq Remote Storage (D1 Record) ................................................................................. 16
WinDaq Rate (D2 Rate) ....................................................................................................... 16
WinDaq Counter (D3 Count) ............................................................................................... 18
General Purpose Digital Inputs ............................................................................................ 20
General Purpose Digital Outputs .......................................................................................... 21
4-20mA Current Loop Measurements ............................................................................................... 22
LED Indicator .................................................................................................................................... 23
ChannelStretch™ ............................................................................................................................... 23
Connection .................................................................................................................................. 23
Channel Selection ....................................................................................................................... 24
Sample Rate ....................................................................................................................................... 26
5. Unlock WinDaq .................................................................................................................................. 27
6. Dimensional Drawing ......................................................................................................................... 29
DI-2008 Hardware Manual
Introduction
1
1. Introduction
This manual contains information designed to familiarize you with the features and functions of the DI-2008 Voltage,
Thermocouple, and Pulse USB data acquisition system.
Features
The DI-2008 data acquisition instrument is a portable data recording module that communicates through your com-
puter's USB port. Power is derived from the interface port so no external power is required. Features include:
• 8 fixed differential and isolated analog inputs protected to 120V rms.
• 7 digital I/O ports protected to +30V.
• 16-bit measurement resolution.
• Per channel programmable measurement ranges of ±10, ±25, ±50, ±100, ±250, ±500mV; ±1, ±2.5, ±5, ±10, ±25,
±50 Volts or Thermocouple types J, K, T, B, R, S, E, and N.
• Built-in cold junction compensation automatically enabled for any channel programmed as a thermocouple.
• Sample rates from as high as 2 kHz (for a single channel) to as low as 1 sample every 2.5 hours.
• A push-button to tag remote events in WINDAQ software.
• LED indication for easy notification of device status.
• Free WinDaq/Lite provides access to all instrument features. WinDaq/Unlock required per instrument to operate
multiple units using ChannelStretch™*
• ChannelStretch™ Technology allows you to sync up to 16 units (requires unlock code for each device)
• Counter channel (terminal count of 65535).
• Frequency channel (10 Hz to 50 kHz full scale across 12 programmable ranges).
• 15V excitation power supply output to power external sensors.
• Included .Net Class supports programming the DI-2008 under any .Net programming language.*
• Fully documented instrument protocol for programming the device in operating systems other than Windows.*
*ChannelStretch requires that each device be unlocked when used with WinDaq software. WinDaq unlock is not
required for ChannelStretch if programming devices using the .Net class or instrument protocol.
Analog Inputs
The DI-2008 features eight isolated differential channel inputs located on the sixteen-position screw terminal blocks
for easy connection and operation. Each channel can be programmed to acquire data as Voltage (±10, ±25, ±50, ±100,
±250, ±500mV; ±1, ±2.5, ±5, ±10, ±25, ±50 Volts) or Thermocouple temperature (types J, K, T, B, R, S, E, and N are
supported).
Utilize the functionality of WINDAQ software to experience all the features encased in these small, inexpensive
instruments. Unlock code required to expand channel count using the ChannelStretch feature.
Digital I/O
The DI-2008 contains seven digital ports that may each be used as a general-purpose digital input or for a specific
function as designated on the device. Digital port D0 may be used for WinDaq Events; Digital port D1 may be used
for WinDaq remote Start/Stop; Digital port D2 may be used for rate measurements; Digital port D3 may be used for
DI-2008 Hardware Manual
Introduction
2
counts; Digital ports D4-D6 are general-purpose digital input ports. Please Note: Digital outputs are not supported in
WinDaq software. Each port may be configured as a switch using your own program.
Software
All software required to record and playback waveforms is included with the purchase of any DI-2108-P data acqui-
sition system via download.
WINDAQ®Recording and Playback Software
WINDAQ Acquisition and WINDAQ Waveform Browser allow you to record and playback data acquired through your
instrument. WINDAQ software is an invaluable resource to record and analyze your data and is available for free from
our web site (www.dataq.com).
WINDAQ Lite Data Acquisition software (free) can be used to record waveforms directly and continuously to disk
while monitoring a real time display of the waveforms on-screen. It operates, displays, and records all channels in
real time. An optional unlock code is available to allow you to synchronize multiple units and expand channel count
using ChannelStretch.
WINDAQ Waveform Browser playback software (also known as “WWB”) offers an easy way to review and analyze
acquired waveforms. A built-in data file translator allows the user to display multiple waveforms acquired by
WINDAQ Acquisition software or any of a wide range of data acquisition packages. The software’s disk-streaming
design allows data files of any length to be graphically displayed rapidly, in normal or reverse time directions. Seven
standard cursor-based measurements, frequency domain, and statistical analysis functions help simplify waveform
analysis and interpretation. WINDAQ Waveform Browser is free and installed when installing WINDAQ Software.
Help
All WINDAQ software utilizes context-sensitive help. Help may be accessed through the Help menu or by pressing the
F1 key with any pull-down menu item selected. This will take you directly to the Help topic most relevant to that par-
ticular function or feature. Help topics discuss in detail each function available in the software.
DI-2008 Hardware Manual
Specifications
3
2. Specifications
Analog Inputs
Number of Channels: 8
Channel Configuration: Differential, Isolated
Programmable measurements per channel: Voltage, Thermocouple
Programmable thermocouple types and measure-
ment range per channel:
Over 25 ±3 °C ambient temperature range.
Stable ambient temperature.
Following 30 minutes warm-up.
Excluding common mode error.
Excluding thermocouple error.
TC Type Range (°C) Accuracy (°C)
J -190 to 1200 ±(0.1% of span + 2)
K -180 to 1360
T -190 to 400 ±(0.1% of span + 1)
B600 to 1000 ±(0.2% of span + 4)
1001 to 1810 ±(0.1% of span + 3)
R-40 to 300 ±(0.2% of span + 6)
301 to 1760 ±(0.1% of span + 3)
S-40 to 400 ±(0.2% of span + 6)
401 to 1750 ±(0.1% of span + 3)
E -160 to 990 ±(0.1% of span + 1)
N
-170 to 50 ±(0.1% of span + 3)
51 to 1290 ±(0.1% of span + 1)
Programmable voltage measurements ranges per
channel:
At 25 °C ambient temperature.
Following 30 minutes warm-up.
Excluding common mode error.
Range (±) Accuracy
10 mV
±(0.05% of range + 10 µV)
25 mV
50 mV
100 mV
250 mV
500 mV
1 V
2.5 V
5 V
10 V
25 V
50 V
Input impedance: 1 M all ranges
Isolation: Input-to-output, Channel-to-channel
Absolute max input without damage: 120 Vrms
DI-2008 Hardware Manual
Specifications
4
Maximum common mode voltage: 120 Vrms
Minimum common mode rejection (330
unbalance):
>110 dB (DC to 60 Hz)
Channel-to-channel crosstalk rejection:
(Rsource ≤ 330 Ω; Freqsource ≤ 60 Hz)
> 100 dB
Digital Ports
Number of ports: 7
Type: MOSFET switch
Configuration: Programmable as an input or switch
Pull-up value: 4.7 k
Isolation: None
Input high voltage threshold: 2.4 V minimum
Input low voltage threshold: 0.8 V maximum
Absolute maximum input without damage: ±30 V peak
Count/Rate
Digital port assignment: Count: Port 2 as input; Rate: Port 3 as input
Internal pull-up value: 4.7 k
Input high voltage threshold: 2.4V
Input low voltage threshold: 0.8V
Terminal count: 65,535
Maximum rate frequency: 50 kHz
Minimum rate frequency: 0.5 Hz
Maximum count frequency: 50 kHz
ADC Characteristics
Voltage measurement resolution: Range (±) Resolution Units
10 mV 0.305
V
25 mV 0.763
50 mV 1.53
100 mV 3.05
250 mV 7.63
500 mV 15.26
1 V 30.5
2.5 V 76.3
5 V 152.6
10 V 305
25 V 763
50 V 1.53 mV
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