DT9862

10 MS/s High-Speed, Isolated
Simultaneous USB Data Acquisition
ModuleOverview
The DT9862 is a high-speed, high-performance USB dataacquisition module that provide throughput rates up
to 10 MS/s on one channel, 10 MS/s burst sampling on
2 channels, or 5 MS/s on 2 channels continuously. TheDT9862 provides a bandwidth of 10 MHz. Each analog
input has its own A/D converter to eliminate phaseshift between channels and to allow you to correlatemeasurements at the exact same instant in time. EachDT9862 Series module also includes three quadratureencoders for measuring absolute and relative position
and for detecting rotational speed.

The DT9862 high-speed USB data acquisition modulefeatures SMA connectors to ensure signal integrity atmaximum sample rate of up to 10 MS/s per channel.

Maximum Sample Rates and Data Rates to the Hostfor Various Channel List Configurations
Input Channel ListConfiguration

Key Features• 2 simultaneous, 16-bit A/D channels• Sample rates up to 10 MS/s/ch• ±500 V galvanic isolation prevents ground loops• 10 MHz bandwidth• Two optional 16-bit deglitched D/A channels withsample rates up to 2 MS/s/ch• Two 32-bit counter/timer, 32 DIO lines• Three 32-bit quadrature encoders• Simultaneous subsystem operation: analog input,analog output, digital I/O, counter/timer, and quadencoders• Compatible with LabVIEW™ and MATLAB®
• Includes free QuickDAQ software to get up andrunning quickly• SMA connectors

Maximum
Sample Rate

Maximum Data
Rate to Host

Burst Sampling: 2 analog
input channels

10 MS/s/ch1

28.57 MB/s1

1 analog input channel(either channel 0 orchannel 1)

10 MS/s/ch

20 MB/s2 analog input channels

5 MS/s/ch

2 analog in channels +digital in + 2 counter/timers+ 3 quad encoders

0.96 MS/S/ch

28.57 MB/s
325 MB/s

1Both channels captured in FIFO at 10 MS/s. Max acquire time for
2 analog channels is 3.2768 ms. Sample rate formula: sample rate
x number of channels)/1 x 65536. This is a subset of continuous
acquire (the number of samples is less than or equal to the size ofthe input FIFO).

2Rates as high as 7.143 MHz have been attained with an optimizedsystem

3Sample rate below 1 MS/s can reduce accuracy.

For the complete table of Maximum Sampling Frequencies
and Streaming Data Rates to the Host for Various Channel List
Configurations, see Appendix E in the DT9862 User’s Manual.

Supported Operating Systems• Windows® 10/8/7/Vista® 32/64-bit

Bandwidth of the DT9862

High-Speed Analog Input Channels

The DT9862 is a digitizer and provides a bandwidth of10 MHz. It does not allow for under-sampling. For theDT9862, specify a sampling frequency that is at least
twice as fast as the input’s highest frequency component(Nyquist sampling theory). For example, to accurately
sample a 1 MHz signal, specify a sampling frequency ofat least 2 MHz. Doing so avoids an error condition called
aliasing, in which high frequency input components
erroneously appear as lower frequencies after sampling.

DT9862 modules support two single-ended analog
inputs. Each channel features its own 16-bit A/Dconverter, with sample rates up to 10 MS/s per channel.
Using a DT9862 module, data can be acquired from asingle analog input channel or from both analog input
channels using the analog input channel list.

Input Sample Clock Sources
The DT9862 module allows the following clock sources topace analog input operations:• Internal A/D clock• External A/D clock(508) 946-5100

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DT9862-2-2 Board Callouts
All Power Functions Synchronized

Full Simultaneous Operation
and Triggering of all Functions

Eliminates “beat” frequencies, minimizes
subtle errors in sampling
Analog inputs, analog outputs,±500 V Galvanic Isolation Barrier DIO, counter/timer, quad encoders
Maximizes Signal Integrity

Synchronous Triggering & Operation
for Data Streaming to Host Memory
Via external trigger or internal clock allows exact data correlation & responseof DUT to stimuli
32 Digital I/O,
2 Counter/Timers(32-bit), 3 Quad
Encoders (32-bit)

Prevents ground loops, protects
computer

Input/Output
Timing andTrigger Control

Input FIFO Holds
64K samples
Output
FIFO Holds
128 Ksamples

10 Layer PC Board
Board Dimensions:

Includes 4 Layers ofGround Plane for Powerand Ground to givenoise-free operation

7.85” (199.34 mm) W
9.18” (233.17 mm) L
0.85” (21.59 mm) H

DT9862-2-2 Board
2 High-Speed Parallel 16-bit A/D Channels
10 MS/s/ch sample rate on a single channel
5 MS/s/ch sample rate on both channels
operating simultaneously, ±2.5 V“Screw-on” SMA Connectors for All Analog 2 Fast Settling, Deglitched 16-bit D/A Channels
Inputs and Outputs, Clocks, Triggers
2 MHz (500 nS) settling with small step of <100 mVProvides best high frequency characteristics and500 kS/s (2 uS) sample rate for full scale ±2.5 V
impedance matching(508) 946-5100

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Block Diagram of the DT9862 Module(508) 946-5100

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Analog Input Conversion Modes

High-Speed, High-Resolution Analog Outputs

The DT9862 supports the following conversion modes:

The DT9862 module supports up to two 16-bit DC-levelanalog output channels (depending on the DT9862
model selected). The DACs are deglitched to prevent
noise from interfering with the output signal. They
power up to a value of 0 V ±10 mV. The DT9862 module
can output data to a single DAC or sequentially to bothDACs and/or the digital output port.

• Single-Value Mode• Continuous Scan Mode
Single-Value Mode
Single value operations are the simplest to use. Usingsoftware, specify the analog input channel to sample.
The module acquires the data from the specified channel
and returns the data immediately. For a single-value
operation, a clock source, trigger source, scan mode, orbuffer cannot be specified. Single-value operations stop
automatically when finished.

Output Clock Sources
The DT9862 module allows the following clock sources topace analog output operations:• Internal DAC clock• External DAC clockContinuous Scan Mode
Continuous scan mode takes full advantage of thecapabilities of the DT9862 module. Use continuous scanmode to accurately control the period between successive
simultaneous conversions of all channels in a channel list.
Specify the channel list, clock source, trigger source, scanmode, and buffer using software.

Output Triggers
A trigger is an event that occurs based on a specified setof conditions. The DT9862 series modules support thefollowing output trigger sources:• Software trigger• External digital (TTL) trigger

Input Triggers
A trigger is an event that occurs based on a specified
set of conditions. Acquisition starts when the module
detects the initial trigger event and stops when all theallocated buffers have been filled or when the operationis stopped.

Analog Output Conversion Modes

The DT9862 module supports the following trigger
sources:Streaming Analog Output

The DT9862 supports the following conversion modes:• Single-Value Operations• Continuous analog output operations
Use streaming analog output mode to accurately control
the period between conversions of individual channels
in the output channel list. Use software to fill the output
buffer with the values that you want to write to the DACs
and to the digital output port, if applicable.

• Software trigger• External digital (TTL) trigger• Analog threshold trigger
Data Transfer

Waveform Generation

Before acquisition begins, buffers must be allocatedto hold the data. An event is raised whenever a buffer
is filled allowing data to be moved and/or processed
as needed. Data is written to multiple allocated input
buffers continuously; when no more empty buffers areavailable, the operation stops. The data is gap-free.

(508) 946-5100

Use waveform generation mode if you want to output
a waveform repetitively. Use software to allocate thememory and specify the waveform pattern.

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High-Speed Digital I/O Lines

Counter/Timer Operation Modes

The DT9862 module supports one digital input port,
consisting of 16 digital input lines and one digital output
port, consisting of 16 digital output lines. The resolution
is fixed at 16 bits. You can read all 16 digital input lines orwrite all 16 digital output lines with a single-value digital
I/O operation. In addition, you can specify the digital
input port in an analog input channel list to perform acontinuous digital input operation, or you can specify thedigital output port in an output channel list to perform acontinuous digital output operation.

DT9862 supports the following counter/timer operation
modes:• Event counting• Up/down counting• Frequency measurement• Edge-to-edge measurement• Continuous edge-to-edge measurement• Rate generation• One-shot• Repetitive one-shot

The DT9862 module allows you to program the firsteight digital input lines to perform interrupt-on-change
operations.

Quadrature Encoder
The Quadrature Encoder module contains threequadrature encoders which allow simultaneous decodingof three quadrature encoded inputs. The quadrature
encoders may be used to provide relative or absolute
position or, by calculating the difference between
samples, the rotational speed.

Counter/Timer Channels
The DT9862 module provides two 32-bit counter/timers.
Each counter accepts a clock input signal and gate input
signal and outputs a pulse (pulse output signal). Using
software, one or more of the counter/timers can be
specified in the analog input channel list.

±500 V Galvanic Isolation Protects Your Data
Computers are susceptible to ground-spikes through any
external port. These spikes can cause system crashes andmay even cause permanent damage to your computer.
These modules feature 500 Volts of galvanic isolation toprotect your computer from ground-spikes and to ensurea reliable stream of data.

The following clock sources are available for the counter/timers:• Internal counter/timer clock• External counter/timer clock
Gate Types

EMI and ESD Design Criteria

The edge or level of the Counter n Gate signal determines
when a counter/timer operation is enabled. The DT9862
supports the following gate types:

The DT9862 has been designed to perform with thelowest noise characteristics. Damping resistors in series
with every I/O line minimize ringing and EMI and provide
current limits that protect against transient signals.

• None• Logic-low level external gate input• Logic-high level external gate input• Falling-edge external gate input• Rising-edge external gate input

Flexible Packaging Configurations
The DT9862 provides SMA connectors. Physicaldimensions in enclosure (L x W x H): 9.319 x 8.380 x
1.720 in. (236.7 x 212.85 x 43.69 mm). The standard
DT9862 module is shipped with an EP361 +5 V power
supply and cable.

Pulse Output Types and Duty Cycles
The DT9862 series modules can output the following
types of pulses from each counter/timer:• High-to-low transitions – The low portion of theCross-Series Compatibility

total pulse output period is the active portion of thecounter/timer clock output signal.
• Low-to-high transitions – The high portion of thetotal pulse output period is the active portion of thecounter/timer pulse output signal.

(508) 946-5100

Virtually all Data Translation data acquisition modules
are compatible with the DT-Open Layers for .NETClass Library. This means that if your application wasdeveloped with one of Data Translation’s software
products, you can easily upgrade to a new Data
Translation board. Little or no reprogramming is needed.

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QuickDAQ ships free-of-charge and allows you to get up and running quickly.

QuickDAQ

oo Supports Hanning, Hamming, Bartlett, Blackman,

Blackman Harris, and Flat Top response windows

QuickDAQ allows you to acquire and display from all
Data Translation USB and Ethernet data acquisition
devices that support analog input streaming. Combine
QuickDAQ with Data Translation hardware to acquiredata, record data to disk, display the results in both aplot and digital display, and read a recorded data file.
Be productive right out of the box with this powerfuldata logging software. Data can be exported to otherapplications like Microsoft Excel® and The MathWorks
MATLAB® for more advanced analysis. Two additional
options can be purchased to add FFT analysis capabilities
to the base package.

• Advanced FFT Analysis Option (License Required)oo Includes all the features of the QuickDAQ BasePackage and FFT Analysis Package
oo Perform 2-channel FFT operations including:◊ FRF◊ Cross-Spectrum◊ Cross Power Spectral Density◊ Coherence◊ Coherent Output Poweroo Supports real, imaginary, and Nyquist display

functionsoo Additional FFT analysis functions supported:

Exponential, Force, Cosiner TaperKey Features

oo Save data to .uff file format• QuickDAQ Base Package (Free)
oo Ready-to-measure application software
oo Configure, acquire, log, display, and analyze dataoo Customize many aspects of the acquisition,

display, and recording functions to suit yourneeds• FFT Analysis Option (License Required)oo Includes all the features of the QuickDAQ Base
Packageoo Perform single-channel FFT operations including:◊ Auto Spectrum◊ Spectrum◊ Power Spectral Density
oo Configure and view dynamic performancestatistics(508) 946-5100

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Other Software Options

Ordering Summary

There are many software choices available for application development,from ready-to-measure applications to programming environments.

HARDWARE• DT9862-2-2• DT9862-2-0

The following software is available for use with the DT9862 or DT9862Smodule and is provided on the Data Acquisition Omni CD:• DT9862 Device Driver – The device driver allows you to use a DT9862
or DT9862S module with any of the supported software packages orutilities.
• DT9862 Calibration Utility – This utility allows you to calibrate featuresof a DT9862 or DT9862S module.
• Quick DataAcq application – The Quick DataAcq application provides
a quick way to get up and running. Using this application, verify key
features of the module, display data on the screen, and save data todisk.
• DT-Open Layers® for .NET Class Library – Use this class library if you
want to use Visual C#® or Visual Basic® for .NET to develop application
software using Visual Studio® 2003-2012; the class library complies
with the DT-Open Layers standard.
• DataAcq SDK – Use the DataAcq SDK to use Visual Studio 6.0 andMicrosoft® C or C++ to develop application software using Windows
10/8/7/Vista/XP 32/64-bit; the DataAcq SDK complies with theDT-Open Layers standard.
• DAQ Adaptor for MATLAB – Data Translation’s DAQ Adaptor provides
an interface between the MATLAB® Data Acquisition (DAQ) toolbox
from The MathWorks™ and Data Translation’s DT-Open Layers
architecture.
• LV-Link – Data Translation’s LV-Link is a library of VIs that enable
LabVIEW™ programmers to access the data acquisition features of DTOpen Layers compliant USB and PCI devices.

(508) 946-5100		
DT9862-Datasheet		

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ACCESSORIES• EP379 — Dual-Rack mount kit• EP380 — Single-Rack mount kit• EP390 — 1.52-meter cable with two 78-pinconnectors that connect the STP78 screw
terminal panel to the DT9862• STP78 — Screw terminal panel for connecting
digital signals to the DT9862
FREE SOFTWARE• QuickDAQ• DAQ Adaptor for MATLAB — Access theanalysis and visualization tools of MATLAB®.
• LV-Link — Access the power of Data
Translation boards through LabVIEW™.
OPTIONAL SOFTWARE• QuickDAQ FFT Analysis Option (LicenseRequired)• QuickDAQ Advanced FFT Analysis Option(License Required)info@mccdaq.com

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June 2017. Rev 7© Measurement Computing Corporation