Agilent Technologies FS2010 Guia do Utilizador descarregar pdf (Página 97)

Programming via GPIB and VXI 4

Agilent VISA User’s Guide 97

82350 GPIB Card #1

Windows PC

GPIB InstrumentsGPIB Cable

Interface VISA Names

82350 GPIB Card #2

VISA Name

"GPIB0"

"GPIB1"

VISA Addressing

viOpen (... "GPIB0::5::INSTR"...)

viOpen (... "GPIB0::3::INSTR"...)

viOpen (... "GPIB1::3::INSTR"...)

GPIB Interface (82350 PCI GPIB Cards)

Open IO path to GPIB instrument at address 5 using 82350 Card #1

Open IO path to GPIB instrument at address 3 using 82350 Card #1

Open IO path to GPIB instrument at address 3 using 82350 Card #2

1 2 ... 92 93 94 95 96 97 98 99 100 101 102 ... 159 160

Agilent VISA User’s Guide 1
4 Agilent VISA User’s Guide 4
Agilent VISA User’s Guide 5 5
6 Agilent VISA User’s Guide 6
Introduction 7
What’s in This Guide? 8
VISA Overview 9
VISA Support 10
VISA Documentation 10
Introduction 1 11
Agilent VISA User’s Guide 11 11
Contacting Agilent 12
Agilent Technologies 13
Linking to VISA Libraries 14
Sample VISA Program (C/C++) 15
C/C++ Sample Program Contents 17
Format Conversion Commands 20
Numeric Arrays 20
Steps to Running the Program 21
Sample Program Source Code 22
Sample Program Contents 24
Agilent VISA User’s Guide 25 25
Logging Error Messages 26
28 Agilent VISA User’s Guide 28
Programming with VISA 29
VISA Resources and Attributes 30
VISA Attributes 31
3 Programming with VISA 32
Using Sessions 33
Opening a Session 34
Addressing a Session 36
Sample: Opening a Session 39
Closing a Session 40
Searching for Resources 40
Sending I/O Commands 43
Formatted I/O Conversion 45
Using Non-Formatted I/O 54
Using Events and Handlers 57
Programming with VISA 3 59
Agilent VISA User’s Guide 59 59
Agilent VISA User’s Guide 61 61
Agilent VISA User’s Guide 63 63
Using the Callback Method 65
Sample: Trigger Callback 69
Sample: SRQ Callback 71
Using the Queuing Method 74
Enabling Events 75
Sample: Wait on Event for SRQ 77
Sample: Trigger Event Queuing 77
Trapping Errors 80
Sample: Printing Error Code 81
Exception Events 82
Using Locks 87
VISA Lock Types 88
Sample: Exclusive Lock 89
Programming via GPIB and VXI 93
General Interface Information 94
GPIB Interfaces Overview 95
82350 GPIB Card #1 96
Windows PC 96
GPIB InstrumentsGPIB Cable 96
82350 GPIB Card #2 96
VXI Interfaces Overview 98
GPIB-VXI Interfaces Overview 99
GPIB-VXI (E1406A) Interfaces 100
Programming the Registers 102
Using viIn and viOut 103
Using viMoveIn and viMoveOut 104
Functions 106
Mapping Memory Space 109
Sample: Using viPeek16 110
Unmapping Memory Space 111
Using Low-Level viPeek/viPoke 115
Using High-Level viIn/viOut 116
Sample: Using VXI Memory I/O 117
Memory I/O Services 121
MEMACC Attribute Descriptions 124
Agilent VISA User’s Guide 125 125
VI_ATTR_WIN_ACCESS Settings 128
Setting the VXI Trigger Line 129
Programming via LAN 131
5 Programming via LAN 132
Client/Server Model 133
Gateway Operation 133
Programming via USB 141
USB Interfaces Overview 142
Value Description Data Type 143
6 Programming via USB 144
ViFind32 156
VISA address 156
VISA alias 156
158 Agilent VISA User’s Guide 158
Agilent VISA User’s Guide 159 159
160 Agilent VISA User’s Guide 160

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