Measurement-computing CIO-DAS08-PGH User Manual download pdf (Page 5)

1: INTRODUCTION

There are three versions of the CIO-DAS08-PGx board, CIO-DAS08-PGL, CIO-DAS08-PGH and CIO-DAS08-PGM. (The

CIO-DAS08-PGM duplicates MetraByte DAS-8PGA ranges and codes). These versions will be referred to as CIO-DAS08-PGx

throughout this manual except where the differences between the versions require specifying a particular version.

If you have one of these boards and are not sure which one, you can identify the -PGH or -PGL versions by noting the part number

of the amplifier. The amplifier, U6, is located approximately in the center of the board. The part number of the amplifier on the

-PGH version is PGA202. The part number of the amplifier on the -PGL version is PGA203. Call the factory for aid in

identifying the -PGM version.

The CIO-DAS08-PGx boards are an extension of the popular CIO-DAS08 architecture. The boards are identical at the register

level, performance, and connector, with the following exceptions:

1. Gains are programmable as follows:

a. CIO-DAS08-PGM gains are 0.5, 1, 10, 100, and 500.

b. CIO-DAS08-PGH gains are 0.5, 1, 5, 10, 50, 100, 500, and 1000.

c. CIO-DAS08-PGL gains are 0.5, 1, 2, 4, and 8.

2. Analog inputs are differential. (However, provision has been made to add resistors to convert the inputs to

pseudo-single-ended mode.) To maintain compatibility with signal conditioning boards such as the CIO-EXP16, an

optional SIP resistor provides ground reference to the CH# Low inputs.

3. A stable crystal (“XTAL”) oscillator provides the A/D pacer clock pulse. To give compatibility with programs written for

the AD08, a jumper selects either the stable XTAL or the PC Bus clock.

4. A DC/DC converter supplies stable ±15VDC power to the analog circuitry. The board can be ordered without the

DC/DC converter. This reduces the cost but limits the ranges of analog inputs. It is available only on orders of ten or

more units.

5. There is only one connector on the board.

1.1 SOFTWARE INSTALLATION

Before you open your computer and install the board, install and run InstaCal, the installation, calibration and test utility included

with your board. InstaCal will guide you through switch and jumper settings for your board. Detailed information regarding these

settings can be found below. Refer to the Software Installation manual for InstaCal installation instructions.

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Measurement-computing CIO-DAS08-PGH User Manual Page 5