Advantech PCI-1720U Manual de usuario descargar pdf (Pagina 20)

Features

6-20

Plug-in DA&C Cards

All product specifications are subject to change without notice Last updated : January 2005

PCI-1741U

NEW

Speciﬁcations

Analog Input

 Channels 16 single-ended or 8 differential or combination

 Resolution 16-bit

 FIFO Size 1 K samples

 Max. Sampling Rate 200 kS/s

Input range and

Gain List

Gain 0.5 1 2 4 8

Unipolar N/A 0~10 0~5 0~2.5 0~1.25

Bipolar ±10 ±5 ±2.5 ±1.25 ±0.625

Bandwidth for PGA

Gain 0.5 1 2 4 8

Bandwidth

4.0

MHz

4.0

MHz

2.0

MHz

1.5

MHz

0.65

MHz

 Common mode voltage ±11 V max. (operational)

 Max. Input voltage ±20 V (protection)

 Input Protect 30Vp-p

 Input Impedance 100 MΩ/10pF(Off); 100 MΩ/100pF(On)

Introduction

PCI-1741U is a powerful high-resolution multifunction DAS card for the PCI bus. Its sampling rate is up to 200 kS/s and the 16-bit resolution makes it suitable for most data

acquisition applications. PCI-1741U provides 16 single-ended or 8 differential analog input channels, one 16-bit D/A output channel, 16 digital input/output channels, and one 10

MHz 16-bit counter channel.

Auto-calibration Function

PCI-1741U provides an auto-calibration function by using a calibration utility. The built-in calibration circuitry of the PCI-1741U corrects gain and offset errors in analog input and

analog output channels thereby eliminating the need for external equipment and user adjustments.

BoardID™ Switch

PCI-1741U has a built-in BoardID™ DIP switch that helps deﬁne each card’s unique identity when multiple identical PCI cards have been installed in the same computer. The BoardID

switch is very useful when you build your system with multiple identical PCI cards. With the correct BoardID switch settings, you can easily identify and access each card during

hardware conﬁguration and software programming.

Plug & Play Function

The PCI-1741U is a Plug & Play device, which fully complies with PCI Speciﬁcation Rev 2.2. During card installation, there is no need to set jumpers or DIP switches. Instead, all

bus-related conﬁgurations such as base I/O address and interrupt are automatically done by the Plug & Play function.

On-board FIFO Memory

The PCI-1741U provides 1K samples on-board FIFO (First In First Out) memory buffer for AD. This is an important feature for faster data transfer and more predictable performance

under the Windows system.

On Board Programmable Timer/Counter

The PCI-1741U provides a programmable timer counter for generating a pacer trigger for the A/D conversion. The timer/counter chip is 82C54, which includes three 16-bit counter

10 MHz clocks. One counter is used as an event counter for counting events coming from the input channel. The other two are cascaded together to make a 32-bit timer for pacer

trigger time base.

16-bit, 200 kS/s Low cost

Multifunction card w/AO

 16-bit high resolution

 200 kS/s sampling rate

 Auto calibration function

 16 S.E. or 8 Diff. AI

 Unipolar/Bipolar input range

 1 K samples FIFO for AI

 Universal PCI bus (support 3.3 V or 5 V PCI bus signal)

 BoardID™ switch

Accuracy

DNLE: ±1LSB

INLE: ±1LSB

Zero (Offset) error: Adjustable to ±1 LSB

Gain 0.5 1 2 4 8

Gain error

(% FSR)

0.03 0.02 0.02 0.03 0.04

THD: -90 dB

ENOB: 13.5 bits

Clocking

and Trigger

Inputs

Trigger Mode

Software, on-board programmable pacer or

external

A/D pacer clock 200 kHz (max.); 2.328mHz (min.)

Analog Output

 Channels 1

 Resolution 16-bit

 Operation mode Single output

 Throughput PC dependent, Software update (Direct AO)

Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com

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