Omega ISA- BUS MULTI-FUNCTIONAL BOARD OME-A822PG Manuale Utente Scaricare il pdf (Pagina 27)

2.5 Digital I/O

The OME-A-822PGL/PGH provides 16 digital input channels and 16

digital output channels. All levels are TTL compatible. The connection

diagram and block diagram are given below:

Latch

Reset

Power on

reset

Reset

Latch

D0..D7

Base+D

Base+E

D0..D7

D8..D15

1..8

9..16

Output Latch Register

CN2

17..18

DGND

TTL

External

Device

OME-A-822PGL/PGH

Rea

Read

D0..D7

Base+6

Base+7

D0..D7

D8..D15

1..8

9..16

Input Buffer Register

CN1

17..18

DGND

TTL

OME-A-822PGL/PGH

External

Device

OME-A-822PGL/PGH Hardware Manual ---- 25

1 2 ... 22 23 24 25 26 27 28 29 30 31 32 ... 62 63

User’s Guide 1
OME-A-822PGH/PGL 3
1. Introduction 6
1.1 General Description 6
1.2 Features 6
1.3 Specifications 7
1.3.4 DA Converter 8
1.3.5 Digital I/O 8
1.3.6 Interrupt Channel 8
1.4 Applications 10
1.5 Product Check List 10
Attention ! 10
2. Hardware Configuration 11
2.1 Board Layout 11
SW1 : BASE ADDRESS 12
2.3 Jumper Settings 13
Selection 13
Refer to Sec. 2.9 first 14
2.4 I/O Register Address 18
2.4.1 8254 Counter 19
2.5 Digital I/O 27
OME-A-822PGL/PGH 27
2.6 8254 Timer/Counter 28
2.7 A/D Conversion 29
2.7.1 A/D conversion flow 30
2.7.3 A/D Transfer Modes 31
2.8 D/A Conversion 33
Figure 1-A 35
Figure 1-B 35
Signal Shielding 37
3. Connector 39
SINGLE-ENDED SIGNAL MODE 40
DIFFERENTIAL SIGNALS 41
3.2 Daughter Board 42
4. Calibration 43
4.2 D/A Calibration 44
4.3 A/D Calibration 45
5. Diagnostic Utility 46
5.1 Introduction 46
5.2.1 Setup 49
5.2.2 CALIBRATION 51
5.2.3 FUNCTION TEST 52
5.2.4 SPECIAL TEST 60
5.2.5 Help 61
WARRANTY/DISCLAIMER 62
RETURN REQUESTS/INQUIRIES 62
Shop online at www.omega.com 63

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Omega ISA- BUS MULTI-FUNCTIONAL BOARD OME-A822PG Manuale Utente Pagina 27

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