Acces I/O products USB-AO-ARB1 User manual

ACCES I/O Products, Inc. 858 550 9559 www.acces.io
10623 Roselle Street 800 326 1649 http://acces.io/USB-AO-ARB1
San Diego CA 92121-1506 USA [email protected] MADE IN THE USA
8MHZ 16-BIT ANALOG OUTPUT USB MODULE
HARDWARE MANUAL
MODEL USB-AO-ARB1

ACCES I/O Products, Inc. MADE IN THE USA USB-AO-ARB1 User Manual
2 manual revision B1a
CHAPTER 1: QUICK START
It is recommended that you install the software package before
connecting the USB module to your computer. You can install the
software1using either a stand-alone installer downloaded from the
website or an optional Software Master CD.
Run the installer you downloaded (or autorun.exe on the Software
Master CD) and follow the prompts to install the software for your
device.
Once the software has been installed: If your device is configured
to use external power, connect the voltage source to the device,
then turn on the power. Plug the USB cable into both the USB
module and your system.
As soon as the green Power/Activity LED lights, your new analog
output is ready to use; you can run any of the provided sample
programs to begin using the device.
If, for any reason, the Power/Activity LED does not light, launch
Device Manager and look under the “Data Acquisition” section. If
the USB device displays a warning triangle, right-click and select
“Update Driver”.
Please note: during the installation you may be prompted regarding
the installation of non-WHQL-certified drivers; please carefully
confirm the digitally signed source of the drivers and accept the
installation.
1In Linux or OSX please refer to the instructions in those directories.
CHAPTER 2: INTRODUCTION
USB, the world’s most popular peripheral interconnect bus,
provides an easy way to add capabilities of all kinds to your system.
Although originally intended for Human Interface Devices like mice
and keyboards, advances to the specification enabled reliable and
high speed connectivity for everything from audio devices to frame
grabbers.
FEATURES
•High-speed USB 2.0 device (USB 3.0+ compatible),
w/High-retention USB connector
•Fast waveform output; up to 8M samples/sec
•Small, portable digital to analog single-ended output at
16-bit resolution
•16 k sample FIFO buffer on-board
•Jumper selectable analog output ranges of 0-2.5V, 0-5V,
0-10V, ±2.5V, ±5V, ±10V
•Two 4-bit I/O ports independently selectable for inputs or
outputs
•All 8 DIO lines buffered with Sink 32mA / Source 32mA
current capabilities
•Jumper selectable 10k ohm Pull-up/Pull-down resistors on
DIO lines
•Standard 16-pin IDC connector for DIO and GATE
•BNC connectors for DAC output and Gate Control
•PC/104 module size and mounting compatibility
•Alternate embedded USB connector
•Small, rugged, industrial enclosure
The USB-AO-ARB1 features one single-ended analog output on a
type BNC connector running at up to 8MHz of continuous
conversions. The board includes a programmable clock capable of
1K - 8MHz transfers through a 16k word FIFO.
In addition to the one analog output, there are eight standard
digital I/O channels software configurable as two separate ports for
input or output (see block diagram).
All required power is normally supplied to the board via the USB
cable, however for higher current sourcing capabilities, optional
external power may be used. Pull-ups or pull-downs on the board
assure that I/O lines are at a known state at power-up until the
board is initialized by system software. The I/O wiring connections
for the digital I/O lines on the USB-AO-ARB1 are via a 16-position
industry standard IDC connector.
The USB-AO-ARB1 is designed to be used in rugged industrial
environments but is small enough to fit nicely onto any desk or
testing station. The board itself is PC/104 sized (3.550 by 3.775
inches) and ships inside a steel powder-coated enclosure with an
anti-skid bottom.
Control is possible either with custom application software, with
off-the-shelf applications (such as LabVIEW), or with provided
samples and utilities, including samples in Windows XP through
8.1, and Linux.
The analog output and gate input signals are accessed using
industry standard BNC connectors for assured signal integrity. The
8 digital I/O signals are connected via a right-angle IDC 16-pin (0.1”
spacing) boxed and keyed header.
USB
&
µController
High-Speed USB Bus
FPGA
with
16kSample
FIFO 16-Bit
1-Channel
DAC
Programmable
Oscillator
VDC
DAC OUT
BNC #1
GATE /
ENABLE
INPUT
BNC #2
4-Bit
Digital I/O
Buffer 16-PIN
IDC (0.1”)
HEADER
4-Bit
Digital I/O
Buffer

ACCES I/O Products, Inc. MADE IN THE USA USB-AO-ARB1 User Manual
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Refer to Chapter 4 for additional information regarding user-
selectable option settings for this device including analog output
range, polarity, and digital I/O bias selection.
CHAPTER 3: HARDWARE
This unit is PC/104 sized and mounting-compatible (3.55” x 3.775”)
with a standard steel powder-coated enclosure (4” x 4.08” x 1.05”).
This device is available RoHS compliant, and supports Industrial
temperature environments (-40°C to 85°C operating, -65°C to
150°C storage) as an option. Additional options include 3.3V
compatible digital I/O and screw-terminal connectivity for positive
external power retention (replaces the DC input jack).
A green LED provides Power and Activity status. A solid green light
means the firmware has been successfully loaded and executed; a
flickering light indicates activity.
INCLUDED IN YOUR PACKAGE
USB module (installed in labeled enclosure)
6’ USB cable
Printed QuickStart Guide
Contact the factory for information regarding additional
accessories, options, and specials that may be available to best fit
your specific application requirements.
CHAPTER 4: CONFIGURATION SETTINGS
This product has several physical settings you should configure before connecting it to the computer. You can run the provided Windows
Settings Program for a visual walk-through while configuring the settings, or refer to the image above and instructions below. You will need a
Philips screw-driver to open the enclosure. Please follow ESD precautions while configuring settings.
•Digital I/O:
oFor each 4-bit port select between Pull-Up (to Vcc1via 10kΩ) or Pull-down (to GND via 10kΩ). You may also configure a DIO
port for neither pull-up nor pull-down (unbiased) by removing the option selection jumper entirely. Note 1: Vcc is 5VDC (or
3.3VDC if the –LV option was specified)
•Analog Output:
oChoose the full-scale output voltage from 2.5, 5, or 10VDC.
oChoose Unipolar or Bipolar output range (Unipolar goes from 0 to full-scale while Bipolar is from negative to positive full-
scale). Please ensure you move both Polarity Select jumpers to the same “left” or “right” pair of posts as shown in the
drawing, above.
•Power Input:
oChoose to use power as provided by the USB cable, or to use external power (as provided to the DC Jack or screw terminals
(-ST option)).
This manual applies to the following model:
USB-AO-ARB1
One 16-bit 8MHz Analog Output on USB
Available accessories include:
UTBK-16
Direct-connect 16-pin Screw Terminal board
CAB-BNC-6
Standard 6-foot co-axial cable, male BNC connectors
CAB-BNC-CLIP
3-foot co-axial BNC to mini-grabber test clip cable
MP104-DIN
DIN-rail mounting kit
Factory Options include:
-OEM
Board only, without enclosure, features PC/104 module size and
mounting compatibility
-T
Extended Temperature (-40°C to 85°C)
-PR
+5VDC regulated AC/DC supply and onboard DC-power input jack
-ST
Screw terminals installed for DC-power input (no jack, no wall-wart)
-LV
Replaces +5VDC digital logic with +3.3V compatible I/O

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CHAPTER 5: PC INTERFACE
The USB-AO-ARB1 is a USB 2.0 High-Speed device compatible with
2.0 and 3.0 USB ports.
The ubiquitous USB port provides a convenient and hot-pluggable
interface for adding this high-speed waveform output DAC board
to most any existing system.
In addition to the industry standard type-B USB connector an
alternate micro-fit embedded USB header connector is provided.
This connector provides a very small footprint, latching signal
interface that avoids the stiff and bulky USB cable.
The USB-AO-ARB1 can be powered via the USB cable (a powered
USB port is required), or from external +5VDC power supplied via
either a DC-jack (option -PR) or screw terminals (option -ST).
CHAPTER 6: I/O INTERFACE
A total of three I/O connectors are provided on this device. A 16-
pin right-angle shrouded and keyed male 0.1” spacing IDC header
contains the digital I/O bits and a digital input dedicated for use as
a waveform GATE signal. A pair of BNC connectors provide the
analog waveform output, and an alternate method of connecting
the GATE signal.
The pair of BNC connectors are industry standard “female”
identical to those you would find on test equipment anywhere.
All DIO bits can be pulled up or down via jumper selection (in two
groups of four bits each). Pull-ups are generally used with input
mode (to make contact-closure monitoring easy), while outputs
are best configured for pull-downs (so external devices don’t
activate while the computer is booting).
Pin
Signal
Names
Description
Pin
Signal
Names
Description
Direction
group 0
1
DIO #0
Digital I/O bit 0
2
GND
Ground
3
DIO #1
Digital I/O bit 1
4
GND
Ground
5
DIO #2
Digital I/O bit 2
6
GND
Ground
7
DIO #3
Digital I/O bit 3
8
GND
Ground
Direction
group 1
9
DIO #4
Digital I/O bit 4
10
GND
Ground
11
DIO #5
Digital I/O bit 5
12
GND
Ground
13
DIO #6
Digital I/O bit 6
14
GND
Ground
15
DIO #7
Digital I/O bit 7
16
/TX_EN
GATE Input
3.55"
0.30"
0.35"
0.20"
0.20"
0.20"
3.775” 0.20"
USB
P2 - USB
P1
OUTPUT
POLARITY SELECT
OUTPUT
RANGE SELECT
VEXT
USE +5.0 VDC
POWER
VUSB
POWER FROM USB VEXT VUSB
3.55"
OPTION -ST (SCREW TERMINAL)
+5V
GND
+5V INPUT (OPTIONAL)
VEXT
USE DC
POWER
DIGITAL BIT
PULL-UP/-DOWN SELECT
DIGITAL BITS 0-35V GND
UNI BIP
DIGITAL BITS 4-7
PULL-UP PULL-DOWN
0-5V
or ±5V 0-10V
or ±10V
0-2.5V
or ±2.5V
0-2.5V
0-5V
or 0-10V
±2.5V
5V
or V
±±10
GAT E/E N
DAC CH 0
P3
Pin 1
UNI Ranges BIP Ranges
5.0 VDCGND
1 2
15 16
Option Selection Map & Dimension Drawing

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The /TX_EN signal is available on both the 16-pin header and on a
BNC connector. It is an active low GATE signal and is pulled down
at the factory: to inhibit output bring the /TX_EN pin high.
All pull-up/pull-down resistors are 10kΩ.
CHAPTER 7: SOFTWARE INTERFACE
The USB-AO-ARB1 utilizes a high-speed custom function driver
optimized for maximum continuous data throughput of up to
16MB/s that is hundreds to thousands of times faster than the USB
human interface device (HID) driver used by many competing
products.
This approach maximizes the full functionality of the hardware
along with capitalizing on the advantage of high-speed USB 2.0.
The boards are supported for use in most USB supported operating
systems and includes a free Windows and Linux compatible
software package. This package contains sample programs and
source code in C# (.NET), Delphi, and Visual C++, for Windows.
Third party support includes a Windows standard DLL interface
usable from the most popular application programs and includes
example LabVIEW VIs. Embedded OS support includes XP
Embedded and Windows Embedded Standard. Full driver source
code is provided to assist supporting any and all Operating
Systems.
Numerous sample programs are provided to demonstrate using
the API. Some example functions are shown, below:
UInt32 GetDeviceByEEPROMByte(); // Find an installed
device with a specific BoardID stored in the
first byte of onboard “user” EEPROM.
UInt64 DACOutputProcess(UInt32 DeviceIndex, ref double
ClockHz, UInt32 NumSamples, UInt16[]
SampleData); // Output a waveform dataset one
time
UInt64 DACOutputFrameRaw(UInt32 DeviceIndex, UInt32
FramePoints, UInt16[] FrameData); // add data to
the current waveform buffer for output
UInt64 DACDirect(UInt32 DeviceIndex, UInt16 Channel,
UInt16 Counts); // update the DAC output in
“immediate” mode; i.e., changes the voltage
being output
Our drivers and DLLs usually shield you from needing to know
these details, but for advanced use the following information may
be helpful:
Before the firmware has been loaded and initialized the device
appears to your system as a VID/PID pair of 1605/0068.
Once the firmware has been successfully loaded and is running the
device appears as a VID/PID of 1605/8068.
This information is primarily useful if you’ll be using more than one
board in the same computer, all using the same AIOUSB driver.
The latest information can always be found on the product page on
the website. Here are some useful links:
Links to useful downloads
Main web site
http://acces.io
Product web page
acces.io/USB-AO-ARB1
This manual
acces.io/MANUALS/USB-AO-ARB1.pdf
Windows Software
Install Package
acces.io/files/packages/USB-AO-ARB1
Install.exe
CHAPTER 8: SPECIFICATIONS
PC Interface
USB
USB 2.0 or 3.0+, High-Speed
Connector
High-retention type USB-B,
complies with the class 1, Div II,
minimum withdrawal
requirement of over 3 pounds
of force (15 Newtons)
Alternate, Embedded
Connector
Latching small-form-factor
“UP” connector
Molex 53047-0510.
The mating connector is Molex
51021-0500.
Analog Output Interface
Output Connector
BNC, female
Analog Output
1, Single-Ended
Resolution
Unipolar Ranges
Bipolar Ranges
Waveform Output Rate
Relative Accuracy
Differential Non-Linearity
Settling Time
Output Current
16-bit
2.5V, 5V, 10V
±2.5V, ±5V, ±10V
1kHz to ≥8MHz via onboard
oscillator
±4 LSB, typical
±2 LSB, typical
70ns, typical
±6mA
Waveform Features
16kSample FIFO (32kBytes)
GATE input
Onboard intelligence
Digital Input / Output Interface
I/O Connector
Right-angle IDC 16-pin (0.1”)
boxed and keyed header
Gate Connector
BNC, female; also on IDC pin 16

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Digital Outputs
High-output Voltage
Low-output Voltage
Sink Current
Source Current
5V Logic
3.8VDC, min
0.55VDC max
32mA
32mA
High-output Voltage
Low-output Voltage
Sink Current
Source Current
3.3V Logic
2.4VDC, min
0.55VDC max
24mA
24mA
Digital Inputs
High-input Voltage
Low-input Voltage
5V Logic
3.5VDC min, 5.5VDC max
1.5VDC max, -0.5VDC min
High-input Voltage
Low-input Voltage
3.3V Logic
2.0VDC min, 5.5VDC max
0.8VDC max, -0.5VDC min
Environmental
Operating temperature
Commercial (Standard)
Industrial (-T)
0° to 70°C
-40° to 85°C
Storage temperature
-50° to 125°C
Humidity
5% to 95%, non-condensing
Power required
370 mA typical (no load)
+5VDC, regulated
If using more than 500mA, or your USB port/hub has less than
the 500mA normally available, use optional 5VDC external
power supply (-PR option) and move the Vusb jumper to the
Vext position. Connect external power before plugging in the
USB cable.
Physical
Size
3.550 x 3.775 inches
PC/104-size
Enclosure Size
3.990 x 4.075 x 1.045 inches
Weight
75.5 grams
CHAPTER 9: CERTIFICATIONS
CE & FCC
These devices are designed to meet all applicable EM interference
and emission standards.
ROHS / LEAD-FREE STATEMENT
All models are available in compliance with RoHS and various
other lead-free initiatives. Make sure to specify “–RoHS” when
placing your orders.
WARNING
A SINGLE STATIC DISCHARGE CAN DAMAGE YOUR CARD
AND/OR CAUSE PREMATURE FAILURE! PLEASE FOLLOW ALL
REASONABLE PRECAUTIONS TO PREVENT A STATIC
DISCHARGE.
ALWAYS CONNECT AND DISCONNECT YOUR FIELD CABLING
WITH THE POWER TO THE DEVICE OFF. CONNECTING
CABLES TO A DEVICE WITH THE DEVICE OR FIELD POWER
ON MAY CAUSE DAMAGE TO THE I/O CARD AND WILL VOID
ALL WARRANTIES, IMPLIED OR EXPRESSED.
WARRANTY
Prior to shipment, ACCES equipment is thoroughly inspected and
tested to applicable specifications. However, should equipment
failure occur, ACCES assures its customers that prompt service
and support will be available. All equipment originally
manufactured by ACCES which is found to be defective will be
repaired or replaced subject to the following considerations
TERMS AND CONDITIONS
If a unit is suspected of failure, contact ACCES' Customer Service
department. Be prepared to give the unit model number, serial
number, and a description of the failure symptom(s). We may
suggest some simple tests to confirm the failure. We will assign a
Return Material Authorization (RMA) number which must appear
on the outer label of the return package. All units/components
should be properly packed for handling and returned with freight
prepaid to the ACCES designated Service Center, and will be
returned to the customer's/user's domestic site freight prepaid
and invoiced.
COVERAGE
FIRST THREE YEARS: Returned unit/part will be repaired and/or
replaced at ACCES option with no charge for labor or parts not
excluded by warranty. Warranty commences with equipment
shipment.
FOLLOWING YEARS: Throughout your equipment's lifetime, ACCES
stands ready to provide on-site or in-plant service at reasonable
rates similar to those of other manufacturers in the industry.

ACCES I/O Products, Inc. MADE IN THE USA USB-AO-ARB1 User Manual
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EQUIPMENT NOT MANUFACTURED BY ACCES
Equipment provided but not manufactured by ACCES is warranted
and will be repaired according to the terms and conditions of the
respective equipment manufacturer's warranty.
DISCLAIMER
The information in this document is provided for reference only.
ACCES does not assume any liability arising out of the application
or use of the information or products described herein. This
document may contain or reference information and products
protected by copyrights or patents and does not convey any
license under the patent rights of ACCES, nor the rights of others.
GENERAL
Under this Warranty, liability of ACCES is limited to replacing,
repairing or issuing credit (at ACCES discretion) for any products
which are proved to be defective during the warranty period. In
no case is ACCES liable for consequential or special damage
arriving from use or misuse of our product. The customer is
responsible for all charges caused by modifications or additions to
ACCES equipment not approved in writing by ACCES or, if in
ACCES opinion the equipment has been subjected to abnormal
use. "Abnormal use" for purposes of this warranty is defined as
any use to which the equipment is exposed other than that use
specified or intended as evidenced by purchase or sales
representation. Other than the above, no other warranty,
expressed or implied, shall apply to any and all such equipment
furnished or sold by ACCES.