User`s guide

Elan Digital Systems Ltd. 4 AD125 USER’S GUIDE
1. OVERVIEW
Before using the AD125, take some time to read the section
“OPERATIONAL PRECAUTIONS”.
The AD125 card is a general purpose Analogue Data Acquisition
card with the following features:
• 12-bit 0.5MSPS A to D converter (0.625MSPS FOR AD1x6)
(0.25MSPS FOR AD132, 0.1MSPS FOR AD121/131)
• 16 single ended / 8 differential fault protected analogue inputs (8
single ended / 4 differential for AD12x)
• 2x12-bit D to A converters on MF series
• Bipolar and Unipolar input ranges
• 20 different input range settings including +/-10V
• 8 digital I/O lines for AD series or 4 I/O lines for MF series
• 32K x 8 SRAM sample buffer (16K samples)
• Programmable conversion clock divider
• Three modes: BURST, FIFO, SINGLE-SHOT.
• Digital trigger threshold for BURST mode
• Programmable pre-trigger depth
This guide aims to familiarise you with the way that the AD125
works and so will help you to maximise its performance in your
application.
The AD125 is capable of high speed and high accuracy
measurements and can be used as part of a complete data acquisition
and control system. Its applications are limitless. All that is needed
is appropriate control and/or analysis software. Elan provides a
royalty free “kernel” of source code that can be used as a starting
point for your software design. By expanding and enhancing the
code provided, you will be able to gain a significant “time to
market” advantage.
Elan will be happy to quote for either customisation of the AD125 if
its exact specifications do not quite meet your needs, or to create
complete application software. We can also create drivers for 3rd
party “virtual instrument” software e.g. Signal Center or Keithley
Testpoint.