Dataq DI-4718B User manual

The way PC-based instrumentation should be
DI-4718B
8-Channel USB or Ethernet Data Logger for DI-8B Modules
User's Manual
Manual Revision B
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: [phone]
Fax: [phone]
Designed and manufactured in the
United States of America

iii
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-4718B Series 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 and the WinDaq Dashboard ...................................................................... 7
Software Installation .......................................................................................................................... 7
4. Instrument Controls, Indicators, and Connections ........................................................................ 9
Instrument Front Panel ...................................................................................................................... 9
Signal Connections ..................................................................................................................... 9
Installing DI-8B Modules .................................................................................................................. 10
Enabling CJC for Thermocouple Modules ........................................................................................ 11
Connecting Signals ............................................................................................................................ 12
Low-pass Filter ........................................................................................................................... 12
Resolution as a Function of Sample Rate ................................................................................... 13
Built-In Remote Control Jack ..................................................................................................... 14
WinDaq Remote Events ....................................................................................................... 14
WinDaq Remote Storage ...................................................................................................... 15
General Purpose Digital Inputs ............................................................................................ 15
Instrument Rear Panel ....................................................................................................................... 16
Power Input Jack ......................................................................................................................... 16
Ground Lug ................................................................................................................................. 16
Ethernet Port ............................................................................................................................... 16
Mini-B USB Port ........................................................................................................................ 16
USB Drive Port ........................................................................................................................... 16
Status LED .................................................................................................................................. 16
Control Button ............................................................................................................................. 17
Control Button Operations ................................................................................................................. 17
Record Data to USB Thumb Drive ............................................................................................. 17
Stop Recording to USB Thumb Drive ........................................................................................ 17
Fix Errors .................................................................................................................................... 17
Switching between LibUSB and CDC Modes ............................................................................ 17
Save Ethernet and Stand-alone Configuration to Thumb Drive ................................................. 17
Apply Ethernet and Stand-alone Configuration to Device ......................................................... 18
Mode LED Indicator .......................................................................................................................... 18
WinDaq Dashboard ........................................................................................................................... 20
ChannelStretch™ ............................................................................................................................... 21
Connection .................................................................................................................................. 22
Channel Selection ....................................................................................................................... 23
5. Unlock WinDaq .................................................................................................................................. 25

DI-4718B Series Hardware Manual
Table of Contents
vi
6. Dimensional Drawing ......................................................................................................................... 27
7. DI-8B Modules .................................................................................................................................... 29
DI-8B30/31 Analog Voltage Input Modules, 3Hz Bandwidth .......................................................... 29
DI-8B32 Analog Current Input Modules ........................................................................................... 30
DI-8B33 True RMS Input Modules ................................................................................................... 31
DI-8B34 Linearized 2- or 3-Wire RTD Input Modules ..................................................................... 32
DI-8B35 Linearized 4-Wire RTD Input Modules ............................................................................. 33
DI-8B36 Potentiometer Input Modules ............................................................................................. 34
DI-8B38 Strain Gage Input Modules, Narrow & Wide Bandwidth .................................................. 35
DI-8B40/41 Analog Voltage Input Modules, 1kHz Bandwidth ........................................................ 36
DI-8B42 2-Wire Transmitter Interface Modules ............................................................................... 37
DI-8B43 DC LVDT Input Modules .................................................................................................. 38
DI-8B45 Frequency Input Modules ................................................................................................... 39
DI-8B47 Linearized Thermocouple Input Modules .......................................................................... 40
DI-8B50/51 Analog Voltage Input Modules, 20kHz Bandwidth ...................................................... 41

DI-4718B Series Hardware Manual
Introduction
1
1. Introduction
This manual contains information designed to familiarize you with the features and functions of the DI-4718B data
acquisition systems.
Features
DI-4718B series instruments are extremely versatile with multiple interface options, high resolution, expandability
with ChannelStretch™, and fast throughput rates. Features include:
• Accepts up to 8 DI-8B amplifier modules accommodating virtually any industrial signal.
• USB, Ethernet, and Power over Ethernet (PoE) interface options.
• Ethernet models can be used as USB devices.
• Up to 16-bit measurement resolution.
• Up to 160,000 Samples per second maximum throughput rate.
• Adaptable low-pass filter per channel - corner frequency set as a function of sampling rate.
• A multi-purpose push-button for WINDAQ remote events and start/stop recording.
• LED indication for easy notification of device status.
• Free WinDaq/Lite data acquisition recording and playback software.
• ChannelStretch™ Technology allows you to sync up to 16 DI-1120, DI-4108, DI-4208, or DI-4718B instruments
in any combination (requires same communications interface) with a total throughput of 480,000 samples per
second throughput, or more (requires unlock code for each device).*
• Stand-alone option allows the user to configure a recording session through their PC then record data in the field
to removable flash memory via the USB drive port (without being connected to their PC). ChannelStretch™ not
supported in stand-alone mode. Stand-alone data logging requires Unlock code to record more than 1 channel to
removable flash memory.
• Included .Net Class supports programming under any .Net programming language.*
• Fully documented instrument protocol for programming the device in operating systems other than Windows.
*WinDaq/Unlock required per device to use ChannelStretch™ when using WinDaq software. These restrictions do
not apply when programming the device yourself. ChannelStretch is not supported when recording to removable
flash memory.
Analog Inputs
DI-4718B models provide 8 fixed analog inputs designed specifically for DI-8B amplifiers that allow your analog
signals to be converted into 12 to 16-bit digital data via an on board A/D converter.
Utilize the functionality of WINDAQ software to experience all the features in these versatile instruments. An Unlock
Code is required to synchronize multiple units when using WinDaq software. There are no restrictions when pro-
gramming the instruments yourself. An unlock code is also required to record more than a single channel to remov-
able flash memory.
Digital I/O
The DI-4718B provides two digital input channels for Remote Control Operations (Remote Start/Stop and Remote
Events) that may be accessed using the Built-In Remote Control Jack (see “Built-In Remote Control Jack” on

DI-4718B Series Hardware Manual
Introduction
2
page 14). Remote Control configuration and setup is easily accessible in both WINDAQ Acquisition software and in
the Dataq Instruments Hardware Manager (when configuring the instrument for Stand-alone operation).
Software
All software required to record and playback waveforms is included with the purchase of any DI-4718B data acquisi-
tion system. Software is located on the USB thumb drive included with your instrument or via the internet at
run.dataq.com.
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 data in real time
when connected to your PC. An optional unlock code is available to sync multiple units into a single WinDaq file.
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
particular function or feature. Help topics discuss in detail each function available in the software.

DI-4718B Series Hardware Manual
Specifications
3
2. Specifications
Analog Inputs
Number of Channels: 8 configured for signal conditioned inputs
Channel Configuration: Defined by DI-8B Module
Measurement range per channel: Defined by DI-8B Module
Accuracy: ±0.25% FSR (at 1800 S/s, averaging mode)
Input impedance: Defined by DI-8B Module
Input offset voltage: Defined by DI-8B Module
Channel-to-channel crosstalk rejection: -75db @ 100Ω unbalance
Offset temperature coefficient: 0.25µV/°C
Digital filtering: Standard: Conditional over-sampling
Stand-alone: None
CJC Error: 1.5°C plus 8B Module
Isolation (via DI-8B Modules)
Input-to-Output: 1000VDC/Peak AC
Channel-to-Channel: 500VDC/Peak AC
Digital Inputs
Ports: 2
Maximum drain voltage: 25 V
Maximum sink current: 100 mA
Reserved Digital Inputs: D0: WinDaq Remote Events
D1: WinDaq Remote Start/Stop
A/D Characteristics
Type: Successive approximation
Resolution: 12 to 16-bit
Conversion Time: 69.4µs
Scanning Characteristics
Max. throughput sample rate: Standard: 160 kHz
Stand-alone: 20 kHz to 160 kHz (dependent on flash memory)
Min. throughput sample rate: Standard: 20 Hz (2.2 samples per hour with WinDaq)
Stand-alone: 0.0017 Hz
Sample Rate Timing Accuracy: 50 ppm
Max. scan list size: 9 entries
Sample buffer size: 2kb

DI-4718B Series Hardware Manual
Specifications
4
Calibration
Calibration cycle: One year
Ethernet Interface
Type: 10/100Base-T
Connector: RJ-45
Protocol: TCP/IP
Server Type: DHCP or Fixed IP
Removable Memory
Type: MLC, pSLC, or SLC flash memory (with USB SD card reader); USB
thumb drive
Required Format: FAT32
Number of Channels: 1; Unlock code required for 2 or more
Rear Panel Indicators, Connections, and Controls
Button: Multi-function control (Start, Stop, Save Configuration, Apply Configu-
ration)
USB A Connector (Drive): USB drive for Stand-alone data logging
Cannot be used concurrently with the USB interface
Ground Lug: Terminal for Ground
Status LED: One multicolor LED for status indication
Power Connector: USB: 9 to 36 VDC, 2 watts + 8B modules
Ethernet: 9 to 36 VDC, 2.5 watts + 8B modules
Ethernet Connector: RJ45; Optional PoE
Front Panel Connections
Input connectors: Two, removable sixteen position terminal blocks, 28 AWG min, 16
AWG max
Radio Jack: Standard 3.5 mm for remote control signals
USB ChannelStretch™ Operation
Total Max Units: 16
Max Channel Count: 128 Analog, 112 Digital
Max Throughput: ≥480 kHz (higher speeds may result in data loss)
Synchronization Conditions: Syncs with any combination of DI-1120, DI-4108, and DI-4208 USB
instruments.
All synced instruments must operate at the same sample rate per channel,
regardless of channel number, type, or range.
All instruments must be connected to the same USB controller. The use
of USB hubs are recommended to meet this requirement.
Ethernet ChannelStretch™ Operation
Total Max Units: 16

DI-4718B Series Hardware Manual
Specifications
5
Max Channel Count: 128 Analog, 112 Digital
Max Throughput: ≥50 kHz (higher speeds may result in data loss)
Synchronization Conditions: Syncs with any combination of DI-1120, DI-4108, and DI-4208 Ethernet
instruments.
For most accurate synchronization, all instruments should be connected
to the same Ethernet switch.
Power
Power Consumption: 1.5W + 8B Modules
Environmental
Operating Temperature: 0°C to 50°C (32°F to 122°F)
Operating Humidity: 0 to 90% non-condensing
Storage Temperature: -20°C to 60°C (-4°F to 140°F)
Storage Humidity: 0 to 90% non-condensing
Physical Characteristics
Enclosure: Aluminum base with steel wrap-around.
Mounting: Desktop; bulkhead
Dimensions: 5 7/16 "D × 4 1/8 "W × 1 1/2 "H
(13.81D × 10.48W × 3.81H cm.)
Weight: 14 oz.
Power Requirements: USB: 9 to 36 VDC, 2 watts + 8B modules
Ethernet: 9 to 36 VDC, 2.5 watts + 8B modules
Software Support
WINDAQ software: OS support: Check online at http://www.dataq.com/products/windaq/
windows-compatability/
Programming: Instrument Protocol, .NET class, ActiveX Control

DI-4718B Series Hardware Manual
Installation
7
3. Installation
The following items are included with each DI-4718B Data Acquisition System. Verify that you have the following:
• A DI-4718B data acquisition instrument.
• Communications cable.
• A DATAQ Instruments screwdriver for signal lead connections.
• A USB flash drive with WinDaq software. Can also be used for stand-alone data logging.
If an item is missing or damaged, call DATAQ Instruments at 330-668-1444. We will guide you through the appropri-
ate steps for replacing missing or damaged items. Save the original packing material in the unlikely event that your
unit must, for any reason, be sent back to DATAQ Instruments.
Install WINDAQ Software and the WinDaq Dashboard
All software for the DI-4718B can be installed via a download-able executable directly from the DATAQ Instruments
web site. The software is also available on the provided USB flash drive.
Software Installation
1. Disconnect all DATAQ Instruments USB devices from your Computer.
2. Plug the USB flash drive into your computer’s USB port or Go to http://run.dataq.com.
3. Save the executable (Dataq Software Suite Web Setup.exe) to your local hard drive.
4. Double-click on the executable to extract the program and begin software installation.
5. Follow the on-screen prompts and enter all required information.

DI-4718B Series Hardware Manual
Installation
8
6. Software installation is complete - you will now see a “Successful Installation” box - click OK to exit WINDAQ
Installation.
You may now connect the device to your PC and apply power. All DI-4718B versions can be connected to your com-
puter’s USB port using the provided USB cable for configuration. Ethernet models can also be connected to your
computer anywhere on your subnet. Click on the desktop shortcut icon labeled WinDaq Dashboard or click on the
appropriate program group (specified above — default is Start > Programs > WINDAQ) and click on “WinDaq
Dashboard” to access your device.

DI–4718B Series Hardware Manual
Instrument Controls, Indicators, and Connections
9
4. Instrument Controls,
Indicators, and Connections
Instrument Front Panel
The front panel of DI-4718B instruments provide screw terminal connection ports for analog input signal leads. The
front panel also provides remote events and stop/start remote recording control features via a built-in remote control
jack.
Signal Connections
The two 16-port screw terminals on the front of the instrument are used to interface analog input channels 1 through
8. Each channel has four terminals: In+, In-, Ex+, and Ex- for input signals and excitation (if required). Use the
sticker located on the top of your instrument for quick reference to terminal access port designations.
CAUTION
Never touch exposed screw terminal connector pins or screws.
To avoid ESD damage in handling the device, take the following precautions:
Ground yourself with a grounding strap or by touching a grounded object before and during your handling of the
instrument.
!
!

DI–4718B Series Hardware Manual
Instrument Controls, Indicators, and Connections
10
Installing DI-8B Modules
DI-4718B Series instruments can accept up to eight DI-8B modules. Modules are installed to the DI-8B backplane
located on the instrument circuit board. You must remove the front panel and bezel and the ground lug on the rear of
the instrument to access the DI-8B backplane.
1. CAUTION: Avoid ESD damage by grounding yourself with a grounding strap or by touching a grounded object
before and during handling of the instrument.
2. Unplug the device and make sure there is no power to the instrument.
3. Remove the two screw terminal blocks on the front of the instrument.
4. Remove the front panel and bezel by removing the two outside screws on the front of the instrument.
5. Remove the Ground Lug located on the back of the instrument.
6. Pull the circuit board apart from the casing to reveal the DI-8B backplane.
7. Plug the DI-8B module firmly into one of the channel positions clearly labelled on the backplane and secure with
the set screw. DI-8B modules are installed on (or removed from) the socketed DI-8B backplane (located on the
circuit board) and are secured with a non-removable mounting screw. Each channel position is labeled “CHAN-
NEL 1,” “CHANNEL 2,” etc. on the socketed backplane. The DI-8B modules can be mixed or matched in any
combination suitable for the application and are identical in pinout and size, so it doesn't matter which module
gets plugged into which channel position.
8. Using an erasable pencil write the module number of each DI-8B module installed on the sticker located on the
top of the instrument to indicate which module is installed at each channel position.
Two Front Screws
Two Removable Screw Terminals
Front Panel and Bezel
Circuit Board (with DI-8B Backplane)
Casing
DI-8B Module
Set Screw
Ground Lug
Write Installed Modules in
the spaces provided with an
erasable pencil.

DI–4718B Series Hardware Manual
Instrument Controls, Indicators, and Connections
11
9. After all modules are installed and indicated on the sticker reassemble the instrument making sure not to over-
tighten the front screws. Note: If your are installing a thermocouple module you must enable the Cold Junction
Compensation jumper for that channel (see “Enabling CJC for Thermocouple Modules” section below for more
information).
Enabling CJC for Thermocouple Modules
Enable Cold Junction Compensation for each Thermocouple Input module installed. The CJC Enable Jumpers are
located on the circuit board of the instrument. Note: If you are not using a Thermocouple Input Module on that chan-
nel be sure the jumper is disabled (removed or installed on only one pin) because this will affect the input signal.
Each channel has its own CJC enable jumper located in front of each channel position on the instrument circuit board.
1. Unplug the device and make sure there is no power to the instrument.
2. Remove the front panel and bezel by removing the two screws on the front of the instrument.
3. Remove the ground lug from the back of the instrument.
4. Pull the circuit board apart from the casing to reveal the CJC Enable Jumpers.
5. Install a jumper onto the board for each channel that uses a thermocouple module. Eight jumpers are provided
with the DI-4718B for this purpose.
Note: If you are not using a Thermocouple Input Module on that channel be sure the jumper is disabled (removed
or installed on only one pin) because this will affect the input signal.
6. After the DI-8B modules and jumpers are installed reassemble the instrument making sure not to overtighten the
two front screws.
CHANNEL 8
CHANNEL 5
CHANNEL 4
CHANNEL 1
CHANNEL 2
CHANNEL 3
CHANNEL 6
CHANNEL 7
CJC Enable Jumpers Circuit Board with DI-8B Backplane
Casing
Front of DI-4718B

DI–4718B Series Hardware Manual
Instrument Controls, Indicators, and Connections
12
Connecting Signals
Use the removable screw terminal blocks located on the front of the instrument to connect your analog input signals.
Refer to the Screw Terminal Access sticker on the top of the instrument for pinout.
1. Insert the stripped end of a signal lead into the desired terminal directly under the screw.
2. Tighten the pressure flap by rotating the screw clockwise with a small screwdriver. Make sure that the pressure
flap tightens only against the signal wire and not the wire insulation. Do not over-tighten.
3. Tug gently on the signal lead to ensure that it is firmly secured.
When an input signal is connected and WINDAQ Acquisition software is run, WINDAQ’s real time display immedi-
ately reveals the input waveform on your computer’s monitor.
Low-pass Filter
Each analog channel employs a low-pass filter with automatic corner frequency selection. The filter is a CIC (cas-
caded integrator comb) type that uses as many as 512 samples per channel to calculate in real time as data is acquired.
Filter response is optimized when sampling frequency is set to ten times the highest frequency of interest.

DI–4718B Series Hardware Manual
Instrument Controls, Indicators, and Connections
13
The DI-4718B calculates its own Last Point, Maximum, Minimum, and Filter data making it available at the pro-
gramming level. Acquisition methods “RMS” and “Frequency” are permanently disabled for the DI-4718B as are
Input Types “Nonlinear” and “Thermocouple” and selections for “Unipolar” and “Fahrenheit.”
Resolution as a Function of Sample Rate
The resolution of the DI-4718B is a function of sample rate. The lower the sample rate the higher the resolution. ADC
resolution (R) is a function of selected sample rate per channel (F), and the number of enabled analog channels (C):
C Enabled Channels
11
22
43-4
85-8

DI–4718B Series Hardware Manual
Instrument Controls, Indicators, and Connections
14
Built-In Remote Control Jack
The built-in remote control jack located on the front panel of the DI-4718B accepts a standard 3.5mm stereo phone
plug (provided) and provides access to remote events and stop/start remote recording control features in WinDaq.
Refer to the diagram on the front panel for quick reference.
Use a switch closure or TTL signal to record WINDAQ Event Markers (WinDaq Remote Events) or to begin recording
data remotely (WinDaq Remote Storage) using WinDaq. Connect signal leads inside the plug using the following
diagram.
WINDAQ Remote Events
Once the switch closure or TTL signal is connected, activate Remote Events through WINDAQ Acquisition Software.
Events may be automatically placed on the rising or falling edge of the trigger signal. Use the menu command
Options > Remote Events + to set WINDAQ to place event markers on low-to-high transitions of the Event input.
Use the menu command Options > Remote Events - to set WINDAQ to place event markers on high-to-low transi-
tions of the Event input.
Event markers may also be placed in your data file manually by pressing the push button on the back panel of the
instrument while in Recording mode. You must enable Remote Events in WINDAQ to use the button (use the menu
command Options > Remote Events +or Options > Remote Events -).
Turn counterclockwise to remove.
Turn clockwise to tighten.
Ground
Event
Storage
Ground
Storage
Event
Leads