104-DA12-8 Advanced Digital Logic, Inc., 104-DA12-8 Datasheet

104-DA12-8

Manufacturer Part Number

104-DA12-8

Description

Pc/104 Analog Output Board With Arbitrary Waveform Generation

Manufacturer

Advanced Digital Logic, Inc.

Datasheet

1.104-DA12-8.pdf (3 pages)

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FEATURES

•

FUNCTIONAL DESCRIPTION

Model 104-DA12-8A is a PC104 board featuring eight independent 12-bit digital-to-analog converters (DACs) and broadly configurable arbi-

trary waveform generation (ARB) capabilities. Other convenient features include 128K SRAM for waveform data storage, eight 4-20mA cur-

rent sinks, three 16-bit counter/timers and fused general-purpose +5V and +12V power outputs. An economy version is available without the

ARB feature as model 104-DA12-8.

The DACs can be updated individually or simultaneously. An automatic circuit sets the analog outputs to zero at power-on or reset. Each

output is buffered by a short-circuit protected op-amp capable of sourcing up to 5mA. Data for updating each DAC may come from either the

board's onboard RAM or from the PC/104 bus. The on-board 128 KB (64K sample) RAM and onboard intelligent circuitry provides flexible

allocation of between one and eight FIFO buffers/waveforms.

Arbitrary waveform generation capability becomes increasingly necessary as CPUs are burdened with a greater abundance of complex tasks.

An arbitrary waveform is a user-defined set of digital values specified point by point over time. These values are then clocked through a DAC

to provide the analog output signal. Virtually any waveform can be created using the software tools provided by ACCES and also by third-

party software packages. The ARB relieves some of the load placed on the CPU by handling the waveform generation at the hardware level

using on-board memory and control logic. This is especially useful in time-critical applications as outputs remain unaffected by latencies in-

herent in popular operating systems. The ARB architecture allows for total flexibility in allocating the onboard RAM across the channels de-

pending on the complexity of the desired waveform. It is even possible to use the ARB for selected channels while operating the remaining

channels in the software driven mode.

COUNTER/TIMERS

Three 16-bit down-counters, in a type 8254 IC, are included. These are configured as two frequency sources derived from an on-board 2

MHz crystal-controlled oscillator. Counter/Timers 1 and 2 are concatenated on the board to form a single 32-bit counter.

INPUT/OUTPUT CONNECTIONS

Primary I/O connections (analog reference, voltage and current outputs) are made via a 40 pin header. Fused +5V and +12V are also avail-

able on this header. Control and status monitoring of the ARB functions are made at a 10 pin header. Power connections can optionally be

made via an 8 pin header behind the PC/104 connector. All I/O connectors are right angle as standard, but are available as vertical as a

factory option.

Broadly Configurable Arbitrary Waveform Generator

(ARB)

DACs Independently Programmable with Unique

Waveforms

128K SRAM for ARB data storage

Independent 12-bit D/A converter per channel

DACs independently or simultaneously updated

Output ranges of 0-5, 0-10, +/-5, +/-10V, corresponding

4-20mA output

32-bit counter for precisely timed outputs

16-bit counter for interrupt generation

On-board DC/DC converter allows operation on +5V

power

PC/104 Analog Output Board with Arbitrary Waveform Generation

Ph. 858 490-0597 F. 858 490-0599; e-mail: sales@adl-usa.com; web:

Advanced Digital Logic, Inc.; 4411 Morena Blvd., Suite 101; San Diego, CA 92117-4345

PC/104-Analog I/O Board

www.adl-usa.com

Related parts for 104-DA12-8

104-DA12-8 Summary of contents

Page 1

... FUNCTIONAL DESCRIPTION Model 104-DA12- PC104 board featuring eight independent 12-bit digital-to-analog converters (DACs) and broadly configurable arbi- trary waveform generation (ARB) capabilities. Other convenient features include 128K SRAM for waveform data storage, eight 4-20mA cur- rent sinks, three 16-bit counter/timers and fused general-purpose +5V and +12V power outputs. An economy version is available without the ARB feature as model 104-DA12-8 ...

Page 2

... SOFTWARE The 104-DA12-8A is supported for use in most operating systems and includes a free DOS, Linux and Windows 95/98/Me/NT/2000/XP/2003 compatible software package. This contains sample programs and source code in "C" for DOS, and Visual Basic, Delphi, C++ Builder, and Visual C++ for Windows. Also incorporated is a graphical setup program and utilities to generate waveforms in Windows. Third-party support includes a Windows standard DLL interface usable from most popular application programs ...

Page 3

... Down-Counters • Ordering Information Item Code Description 104-DA12-8A (with ARB) 104-DA12-8 (without ARB) 104-DA12-4A (with ARB) 104-DA12-4 (without ARB) Advanced Digital Logic, Inc.; 4411 Morena Blvd., Suite 101; San Diego, CA 92117-4345 Ph. 858 490-0597 F. 858 490-0599; e-mail: sales@adl-usa.com; web: ...

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