Measurement Computing DAC488 v.1 User Manual

Page 4

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DAC488 User’s Manual

Table of Contents

1 - DAC488 Overview

Introduction…… 1
Accessories…… 2
Specifications…… 2

Digital I/O…… 2
Analog Output…… 3
IEEE 488…… 3
General…… 4

2 - DAC488 Setup

The Package…… 5
Hardware Setup…… 6

Front & Rear Panel Layouts…… 6
Default Settings…… 7
IEEE 488 Bus Address Selection…… 7
Mode Selection…… 7
Analog Output Ports…… 7
Digital I/O Port…… 8

Transistor-Transistor Logic (TTL) Levels…… 9
High Voltage/High Current Digital Outputs…… 9
External Trigger/SRQ Input…… 11
To Configure the Digital Output Lines…… 11

3 - DAC488 Power & Assembly

Introduction…… 13

Internal Components…… 13
Factory Service…… 13

Power Line & Fuse Configuration…… 14

Line Voltage Selection…… 14

To Select the Line Voltage…… 15

Fuse Replacement…… 16

To Replace the Fuse…… 16

Rack-Mount & Bench-Top Assembly…… 17

Rack Mount…… 17
Bench Top…… 17

Power-Up & Performance Tests…… 18

Power-Up Activation…… 18
Programming Examples……19

KYBDCTRL.BAS Program…… 19
To Run the Keyboard Controller Program…… 19
DAC488 Command Responses…… 20

Performance Verification…… 20

To Verify the Port Voltage - 10-Volt Range…… 21
To Verify the Port Voltage - 5-Volt Range…… 21
To Verify the Port Voltage - 1-Volt Range…… 22
Data Transfer Speeds…… 22

4 - DAC488 Operation

Introduction…… 23
Command Groups…… 23

System & Port Commands…… 23
Command Support…… 24

Port Triggering…… 24

Trigger Processing & Trigger Overrun…… 25

Internal Buffer…… 26

Buffer Data…… 26
Buffer Save-and-Restore Program…… 27

Control Modes…… 28

Direct Control Mode…… 28
Indirect Control Mode……28
Stepped Control Mode…… 28
Waveform Control Mode…… 29

Multiple Port Synchronization…… 30

Synchronized Waveforms Program…… 30

Digital I/O Port…… 32
User-Defined System Defaults…… 33
IEEE 488 Bus Support…… 33