Measurement Computing Digital488/80A - Manual (Page 4)

Table of Contents
1 - Digital488/80A Overview
Introduction…… 1
Addressing Modes…… 1
Digital I/O Lines…… 1
Handshaking/Control Lines…… 1
HVCX1 High Voltage/Current Interface
Option…… 2
Power-Up & Setup Configuration…… 2
Internal Buffer…… 2
Software Programmable Features…… 2
Accessories…… 2
Specifications…… 3
Digital I/O…… 3
IEEE 488…… 3
General…… 3
Data Transfer Speeds…… 4
2 - Digital488/80A Setup
The Package…… 5
Hardware Setup…… 6
Front & Rear Panel Layouts…… 6
Default DIP Switch Settings…… 7
IEEE 488 Bus Address Selection…… 7
Addressing Mode Selection…… 7
Dual Primary Addressing Mode…… 8
Secondary Addressing Mode…… 8
HVCX1 Option Setup…… 10
Determining Ports Setup…… 11
To Set Up Input Ports…… 12
To Set Up Handshaking Input Lines…… 13
To Set Up Output Ports…… 14
To Set Up Handshaking Output Lines…… 14
To Install the HVCX1 Option…… 16
Digital I/O Ports…… 17
Using the HVCX1 Option for High Voltage/Current
Options…… 18
3 - Digital488/80A Power & Assembly
Introduction…… 19
Internal Components…… 19
Factory Service…… 19
Power Line & Fuse Configuration…… 20
Line Voltage Selection…… 20
To Select the Line Voltage…… 21
Fuse Replacement…… 22
To Replace the Fuse…… 22
Rack-Mount & Bench-Top Assembly…… 23
Rack Mount…… 23
Bench Top…… 23
Power-Up & Programming Tests…… 24
Power-Up Activation…… 24
Programming Examples……25
KYBDCTRL.BAS Program…… 25
To Run the Keyboard Controller Program…… 25
Digital488/80A Command Responses…… 26
4 - Digital488/80A Operation
Introduction…… 29
Handshaking/Control Lines…… 29
Clear (Pin 41)…… 30
Data Strobe (Pin 42)…… 30
Trigger (Pin 43)…… 30
Inhibit (Pin 44)…… 31
Service (Pin 45)…… 31
External Data Ready (Pin 46)…… 31
IEEE 488 Bus Support…… 32
Bus Lines…… 32
Bus Commands…… 32
Bus Addresses…… 34
Bus Terminators…… 34
5 - IEEE 488 Background
History…… 35
General Bus Structure…… 35
Bus Lines & Bus Commands…… 36
Bus Management Lines…… 36
Handshake Lines…… 37
Data Transfer Lines…… 37
Bus Command Groups…… 38
More On Service Requests…… 39
6 - Digital488/80A Commands
Introduction…… 41
Command Syntax…… 42
Command Set & Support…… 43
Command Summary…… 44
Command Reference…… 46
A - Bit Set…… 47
B - Bit Clear…… 48
C - Configuration…… 49
D - Data Output…… 50
E? - Query Error Status…… 51
F - Data Format…… 53
G - Bus Input/Output…… 57
H - Handshake…… 58
I - Invert…… 59
K - End-Or-Identify…… 60
L - Buffer…… 61
M - Service Request Mask…… 62
O - Recall Configuration…… 63
P - Port Select…… 64
Q - Inhibit…… 65
R - Data Ready…… 66
S - Save Configuration…… 67
T - Test…… 68
U - User Status…… 69
V - View Configuration…… 72
V? - View Version…… 73
X - Execute…… 74
Y - Bus Terminator…… 75
? - Query…… 76
Serial Poll Status Byte…… 77
ii Digital488/80A User’s Manual