USB-DIO-32-OEM

The USB-DIO-32-OEM is an ideal solution for adding embedded, portable, easy-to-install digital I/O and counter capabilities to any computer with a USB port. The USB-DIO-32-OEM is a USB 2.0 device, offering the highest speed available with the USB bus. It is fully compatible with both USB 1.1 and USB 2.0 ports. The board is plug-and-play allowing quick connect or disconnect whenever you need additional I/O on your USB port.

The USB-DIO-32-OEM features 32 bits of TTL-compatible digital I/O with high-current capabilities and three optional 82C54 counters. Each digital port can be programmed to accept inputs or to drive outputs on four 8-bit ports, designated as port A, B, C, and D. Power is supplied to the unit via the USB cable or for higher current capabilities, external power may be used. The I/O wiring connections for USB-DIO-32 are via an industry standard 50-pin connector. For external circuits, fused +5VDC power is available at the connector. This resettable fuse is rated at 0.5A.

The USB-DIO-32-OEM is designed to be used in rugged industrial environments, with extended temperature available. The board is PC/104 sized (3.550 x 3.775 inches, 90mm x 96mm) for added flexibility in embedded applications and is small enough to fit nicely onto any desk or testing station.

All I/O lines are buffered by a type 74ABT245 tristate buffer transceiver capable of sinking 64 mA or sourcing 32 mA. The buffers are configured under program control for input or output. Pull-ups (to +5 VDC) or pull-downs (to ground) on the board allow for contact monitoring and assure that there are no erroneous outputs at power-up until the module is initialized by system software.

Unlike most USB digital I/O products which primarily use a human interface device (HID) driver, ACCES offers an easy to use, Windows-based, custom function driver optimized for maximum data throughput. This approach exposes the full functionality of the hardware along with maximizing the advantage of using the high-speed USB 2.0 bus.

OEM USB/104 FORM FACTOR

The OEM (board only) version is perfect for a variety of embedded applications. What makes the OEM option unique is that its PCB size and pre-drilled mounting holes match the PC/104 form factor (without the bus connections). This ensures easy installation using standard standoffs inside most enclosures or systems. The board can be added to any PC/104, PCI-104, or PCI/104-Express stack by connecting it to a USB 2.0 port usually included on-board with embedded CPU form factors such as EBX, EPIC, and PC/104. This is especially important since many newer CPU chipsets do not support ISA and have plenty of USB ports. Future stacks will be using the extremely fast PCI Express bus which is essentially overkill for simple monitoring and control. For embedded OEM type applications, an additional micro-fit USB input header is provided.

High Retention USB Connector

The ever-growing presence of USB in the industrial/military marketplace has driven the need for USB connections to be reliable, dependable, and unfailing. Gone are the days of loose USB connections. A type B USB connector is used on all ACCES USB/104 products which features a high retention design that complies with the class 1, Div II minimum withdrawal requirement of over 3 pounds of force (15 Newtons). This connector has an orange color-coded insulator to quickly differentiate it from standard USB connectors. Using these USB connectors increases reliability in your system and ensures a tight connection. For embedded OEM type applications, an additional micro-fit USB input header is provided in parallel with the type B connector.

Optional Enclosure

The USB-DIO-32-OEM is available packaged in a rugged, steel enclosure with an attractive black powder coat finish and an anti-skid bottom. The enclosure is useful in industrial environments and protects the board from potential environmental hazards. The unit enclosure is 4 inches wide by 4 inches deep by 1.25 inches high and features a DIN rail mounting provision. Please visit the USB-DIO-32 webpage to order the enclosed unit.

Applications

• Mobile Solutions
• Test Equipment
• Kiosks
• Robotics
• Machine Control
• Laboratory Monitoring and Control
• Security Systems, Energy Management
• Relay Monitoring and Control
• Sensing Switch Closures or TTL, DTL, CMOS Logic
• Driving Indicators or Recorders
• Industrial Automation
• Embedded OEM

Counter/Timers

Three 82C54 chips each include three 16-bit counter/timers factory configured in an optimal module for use as event counters, frequency output, pulse width, and frequency measurement (see the Block Diagram).

Optional Accessories

The USB-DIO-32-OEM is available with optional cable assemblies, screw termination boards, and an external AC/DC power supply. The pin connections are also compatible with industry standard I/O racks such as ACCES A24A, Grayhill, Opto 22, Western Reserve Controls, etc. with optional cable. A DIN rail mounting provision is also offered.

Drivers and Downloads

Full list of available Downloads: Software Packages, Drivers, Manuals, and other documents

Information about our Free Software packages:

ACCES is proud to provide a full suite of software support with every Data Acquisition product. We are committed to supporting the most popular operating systems and platforms for our customers. Currently we are actively supporting XP -> 10, both 32 & 64 bit, including "Server 2008," "Embedded," and "Compact" flavors for all plug-and-play products including PCI, PCI Express, USB, and more. Many products continue to ship with support for additional operating systems such as DOS, Windows 95, 98, Me, NT4, and 2000.

Samples

Among the software we deliver with our products are sample programs in a wide variety of programming languages. These samples are used to demonstrate the software interfaces to our products — and many can be used as-is in your production environments, or to test functionality of the devices out-of-the-box. We're currently actively supporting sample programs in Microsoft Visual C#, Visual Basic, Delphi, and Visual C/C++, with many devices including samples in Borland C/C++ 3.1 for DOS. Additionally we provide National Instruments LabVIEW compatible DLLs and many demonstration VIs for our devices.

Drivers

Drivers for various operating systems are also provided, including active support for Windows XP -> 10 — all in both 32-bit and 64-bit flavors, and including consumer, server, and embedded varieties — as well as the 2.6 and newer Linux kernels and recent OSX / macOS versions. Many products continue to ship with driver support for Windows 95, 98, Me, NT4, and Windows 2000, but support for these operating systems is considered deprecated.

Setup Programs and Utilites

Our Data Acquisition devices also include a graphical setup utility that walks you through the process of configuring any option jumpers or switches on the device, as well as explaining a little about the various connectors present.

Many devices also include utility programs - little tools to make your use of the device easier, such as EWriter, a program that allows you to read and write data in the user-accessible EEPROM locations on all our USB data acquisitition products; or WinRISC, a "Really Incredibly Simple Communications" terminal program that lets you get started instantly with serial devices.

"Register Level" Documentation

Besides all this software in all these languages and operating systems ACCES has a policy of open and transparent development: none of our lowest-level "register" interfaces are hidden from you — we document every register in every bus card, every command in every serial board, and every usb control transfer in every USB Data Acquisition board. These lowest-level interfaces allow you to develop for our products in ANY operating system or language, regardless of our actively supporting it or having a driver for it. We have customers actively developing in ADA, Android, Python, Java, MATLAB, Solaris, and more, just by referring to our complete low-level interface documentation! And we provide the full source code to all of our drivers, regardless of operating system, to give you an even bigger head start in your own development tasks.

No Fees or Royalties

All of this software is provided at no additional charge, and is licensed under any of a variety of flexible — and royalty free — options. Check out our software license explanation if you'd like more information..

USB and Performance

Our USB Data Acquisition products use our "AIOUSB" driver package in Windows and Linux. This driver package includes 32-bit and 64-bit support, and consists of low-level driver components and a high-level API library. This custom interface driver enables our USB devices to achieve 4000 transactions per second, compared to the competitions' "HID" drivers that cap out around 50 transactions per second. You can read all about the API in the USB Software Reference Manual linked below, and included in every applicable Software Package. (The Linux version of the AIOUSB API is almost identical to the Windows API, and is documented in the aiousb.html file included in the Linux software package.) Like all of our software, full source code is always provided.

Custom Software

ACCES also offers Custom Software Services for our products. Our prices are unbelievably low, often as inexpensive as free! If you need something tweaked to support your needs, or an entire enterprise application developed from scratch, it is definitely worth your time to inquire with us, first.

Further information about available ACCES Software:

Redistributing Windows Drivers

A list of ACCES drivers and the files that compose them under different versions of Windows, so you can easily redistribute ACCES cards and drivers.

Specifications

Digital Inputs (TTL Compatible)

• Logic High: 2.0 to 5.0 VDC
• Logic Low: -0.5 to +0.8 VDC

Digital Outputs

• Logic High: 2.0 VDC min., source 32 mA
• Logic Low: 0.55 VDC max., sink 64 mA

Optional Counter/Timers

• Type: 82C54-10 programmable interval counters
• Output Drive:
  • 2.0 VDC min., source 32 mA
  • 0.55 VDC max,. sink 64 mA
• Input Gate: TTL/CMOS compatible
• Clock: On-board, 3 MHz crystal-controlled clock
• Active Count Edge: Negative Edge
• Minimum Clock Pulse Width: 30 nS high, 40 nS low
• Timer Range: 16 bits
• Maximum Input Frequency: 10MHz

Environmental

• Operating Temperature Range: 0° to 70°C (optional -40°C to +85°C)
• Storage Temperature Range: -40° to +85°C
• Humidity: Maximum 90% RH, without condensation
• Board Dimension: 3.550 x 3.775 inches

Power

• +5VDC @ ~ 80mA typical including three counters (no load)
  
• +5VDC derived from the USB bus cable o external power supply depending on the user configuration
  
• +5VDC resettable fuse at 0.5A located on ouput on 50-pin connectors (pin 49) for external application use
  

The USB bus is specified to provide 500mA through the USB cable to most desktop environments. This gives you 420mA available on 5VDC (500mA - 80mA = 420mA) for source/sink current output and external power connector (pin 49) use for a particular application. If using more than a total of 500mA, or your USB port/hub has less then the 500mA normally provided, use optional 5VDC external power supply (-PR option) and remove VUSB jumper and place jumper on VEXT. Then plug in external power before plugging into USB port.

Connector Pin Assignments

USB-DIO-32-OEM has a 50-pin connector provided for I/O connections. Connector pin assignments are listed below.

Assignment		Pin	Assignment		Pin
Port C	PC7	1	Counter A0 Freq In		2
Port C	PC6	3	Ctr A1 P.W.I. (Gate)		4
Port C	PC5	5	Counter A2 Freq Out		6
Port C	PC4	7	Counter B0 Freq In		8
Port C	PC3	9	Ctr B1 P.W.I. (Gate)		10
Port C	PC2	11	Counter B2 Freq Out		12
Port C	PC1	13	Counter C0 Freq In		14
Port C	PC0	15	Ctr C1 P.W.I. (Gate)		16
Port B	PB7	17	Ctr C2 Freq Out		18
Port B	PB6	19	Port D	PD7	20
Port B	PB5	21	Port D	PD6	22
Port B	PB4	23	Ground		24
Port B	PB3	25	Port D	PD5	26
Port B	PB2	27	Ground		28
Port B	PB1	29	Port D	PD4	30
Port B	PB0	31	Ground		32
Port A	PA7	33	Port D	PD3	34
Port A	PA6	35	Ground		36
Port A	PA5	37	Port D	PD2	38
Port A	PA4	39	Ground		40
Port A	PA3	41	Port D	PD1	42
Port A	PA2	43	Ground		44
Port A	PA1	45	Port D	PD0	46
Port A	PA0	47	Ground		48
Fused +5 VDC	.	49	Ground		50

Regulatory Compliance

• This product is designed to be in full compliance with CE requirements.