Omega OME-A8111 User Manual

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User’s Guide

OME-A8111 ISA-BUS

Multi-Functional Board

Hardware Manual

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OME-A-8111

Hardware User’s Manual

OME-A-8111 Hardware Manual (ver.1.1, Jul/2003) 1

Table of Contents

1. Introduction_________________________________________________________ 4

1.1 General Description ___________________________________________________ 4

1.2 Features _____________________________________________________________ 4

1.3 Specifications _________________________________________________________ 5

1.3.1 Power Consumption _________________________________________________________5

1.3.2 Analog Inputs ______________________________________________________________5

1.3.3 A/D Converter _____________________________________________________________5

1.3.4 DA Converter ______________________________________________________________ 6

1.3.5 Digital I/O_________________________________________________________________ 6

1.3.6 Interrupt Channel ___________________________________________________________ 6

1.3.7 Programmable Timer/Counter _________________________________________________7

1.3.8 Applications _______________________________________________________________ 7

1.4 Product Check List ____________________________________________________ 7

2. Hardware Configuration ______________________________________________ 8

2.1 Board Layout_________________________________________________________ 8

2.2 I/O Base Address Setting _______________________________________________ 9

2.3 Jumper Setting ______________________________________________________ 10

2.3.1 JP1 : D/A Internal Reference Voltage Selection_____________________________________ 10

2.4 I/O Register Address__________________________________________________ 11

2.4.1 The 8254 Counter __________________________________________________________ 12

2.4.2 A/D Input Buffer Register ___________________________________________________ 12

2.4.3 D/A Output Latch Register___________________________________________________ 13

2.4.4 D/I Input Buffer Register ____________________________________________________ 13

2.4.5 Clear Interrupt Request______________________________________________________ 14

2.4.6 A/D Gain Control Register ___________________________________________________ 14

2.4.7 A/D Multiplex Control Register _______________________________________________ 15

2.4.8 A/D Mode Control Register __________________________________________________ 16

2.4.9 A/D Software Trigger Control Register _________________________________________ 17

2.4.10 D/O Output Latch Register __________________________________________________ 18

2.5 Digital I/O __________________________________________________________ 19

2.6 8254 Timer/Counter __________________________________________________ 20

2.7 A/D Conversion ______________________________________________________ 21

2.7.1 A/D conversion flow__________________________________________________________ 22

OME-A-8111 Hardware Manual (ver.1.1, Jul/2003) 2

2.7.2 A/D Conversion Trigger Modes _______________________________________________ 22

2.7.3 A/D Transfer Modes________________________________________________________ 23

2.7.4 Using software trigger and polling transfer ______________________________________ 23

2.8 D/A Conversion ______________________________________________________ 24

2.9 Analog Input Signal Connection ________________________________________ 25

2.10 Pin Assignment ________________________________________________________ 26

2.11 Daughter Board________________________________________________________ 28

2.11.1 OME-CA-4002 _________________________________________________________ 28

2.11.2 OME-DB-16P __________________________________________________________ 28

2.11.3 OME-DB-16R __________________________________________________________ 28

2.11.4 OME-DB-37 ___________________________________________________________ 28

3. Calibration___________________________________________________________ 29

3.1 Calibration VR Description ______________________________________________ 29

3.2 D/A Calibration Steps ___________________________________________________ 30

3.3 A/D Calibration Steps ___________________________________________________ 30

3.4 DI/O Testing __________________________________________________________ 30

OME-A-8111 Hardware Manual (ver.1.1, Jul/2003) 3

1. Introduction

1.1 General Description

The OME-A-8111 is a high performance, multifunction (analog and digital I/O) board

for the PC AT compatible computer with the ISA bus. The OME-A-8111 provides

programmable gain (1, 2, 4, 8 and 16). The OME-A-8111 contains a 12-bit ADC with up to 8

single-ended analog inputs. The maximum sample rate of the A/D converter is about 30K

sample/sec. There is a 12-bit DAC with voltage outputs, 16 channels of TTL-compatible

digital input, and 16 channels of TTL-compatible digital output.

1.2 Features

z The maximum sample rate of the A/D converter is about 30 K sample/sec
z Software selective input ranges
z PC AT compatible ISA bus
z A/D trigger mode: software trigger, pacer trigger
z 8 single-ended analog input channels:

Programmable gain: 1, 2, 4, 8, 16

Input range: ±5 V, ±2.5 V, ±1.25 V, ±0.625 V, ±0.3125 V

z 1 output channel: 12-bit D/A voltage output, 0~5 V or 0~10 V
z 16 digital inputs /16 digital outputs (TTL compatible)
z Interrupt handling

OME-A-8111 Hardware Manual (ver.1.1, Jul/2003) 4

1.3 Specifications

1.3.1 Power Consumption

z +5V @ 300 mA maximum
z +12V @ 60 mA maximum
z -12V @ 30 mA maximum

z Operating temperature: 0°C ~ 50°C

1.3.2 Analog Inputs

z Channels: 8 single-ended
z Input range: (software programmable)

Bipolar: ±5 V, ±2.5 V, ±1.25 V, ±0.625 V, ±0.3125 V

z Input current: 250 nA max (125 nA typical) at 25°C
z On-chip sample and hold
z Over voltage: continuous single channel to

70Vp-p

1.3.3 A/D Converter

z Type: successive approximation, Burr Brown ADS 774
z Conversion time: 8 µ sec.
z Accuracy: ± 1 bit
z Resolution: 12-bit

OME-A-8111 Hardware Manual (ver.1.1, Jul/2003) 5

1.3.4 DA Converter

z Channels : 1 independent
z Type : 12-bit multiplying , Analog device AD-7948
z Linearity : ± 1/2 bit
z Output Range : 0~5 V or 0~10 V jumper selected , may be used with other AC

or DC reference input. Maximum output limit ± 10V

z Output Drive : ± 5 mA
z Settling Time : 0.6 microseconds to 0.01% for full scale step

1.3.5 Digital I/O

z Output port : 16 bits, TTL compatible
z Input port : 16 bits, TTL compatible

1.3.6 Interrupt Channel

z Level : 3,4,5,6,7 jumper selectable
z Enable : Via control register

OME-A-8111 Hardware Manual (ver.1.1, Jul/2003) 6

1.3.7 Programmable Timer/Counter

z Type : 82C54 -8 programmable timer/counter
z Counters: The counter1 and counter2 are cascaded as a 32-bit pacer timer.
z Pacer output : 0.00047 Hz to 0.5 MHz
z Input Gate : TTL compatible
z Internal Clock : 2 MHz

1.3.8 Applications

z Signal analysis
z FFT & frequency analysis
z Transient analysis
z Production test
z Process control
z Vibration analysis
z Energy management
z Industrial and laboratory measurement and control

1.4 Product Check List

In addition to this manual, the package includes the following items:

z OME-A-8111 multifunction card
z OME-A-8111 utility diskette/CD ROM

OME-A-8111 Hardware Manual (ver.1.1, Jul/2003) 7

2. Hardware Configuration

2.1 Board Layout

19

19 20

CN3 D/C OUTCN2 D/C IN

12

20

21

8111

123456

SW1

A

()

BASS ADDRESS

987654

ON

A31

BB ADS-774

P1

JP1

JP2

VR1 VR2 VR3 VR4 VR5

A1

ANA I/0

CN1

OME-A-8111 Hardware Manual (ver.1.1, Jul/2003) 8

2.2 I/O Base Address Setting

The OME-A-8111 occupies 16 consecutive locations in I/O address space. The base

address is set by DIP switch SW1. The default address is 0x220 as shown below:

BASE ADDR A9 A8 A7 A6 A5 A4

200-20F OFF ON ON ON ON ON

210-21F OFF ON ON ON ON OFF

220-22F(;) OFF ON ON ON OFF ON

230-23F OFF ON ON ON OFF OFF

: : : : : : :

A9 A8 A7 A6 A5 A4

ON

6 5 4 3 2 1

SW1 : BASE ADDRESS

300-30F OFF OFF ON ON ON ON

: : : : : : :

3F0-3FF OFF OFF OFF OFF OFF

(;): default base address is 0x220

OME-A-8111 Hardware Manual (ver.1.1, Jul/2003) 9