Agilent Technologies Agilent 8166A Manual de Instruções Página 227
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Opening an Instrument Session The Agilent 816x VXIplug&play Instrument Driver
Agilent 8163A/B, 8164A/B & 8166A/B Mainframes, Fifth Edition 227
Opening an Instrument Session
To control an instrument from a program, you must open a communication
path between the computer/controller and the instrument. This path is
known as an instrument session, and is opened with the function
ViStatus hp816x_init( ViRsrc InstrDesc, ViBoolean id_query, ViBoolean reset,
ViPSession instrumentHandle );
Instruments are assigned a handle when the instrument session is
opened. The handle, which is a pointer to the instrument, is the first
parameter passed in all subsequent calls to driver functions.
The parameters of the function hp816x
_init include:
•
ViRsrc InstrDesc: the address of the instrument
•
ViBoolean id_query: a Boolean flag which indicates if in-system verifica-
tion should be performed.
Passing
VI_TRUE (1) will perform an in-system verification; passing
VI_FALSE (0) will not.
If you set
id_query to false, you can use the generic functions of the in-
strument driver with other instruments.
•
ViBoolean reset: a Boolean flag which indicates if the instrument should
be reset when it is opened.
Passing
VI_TRUE (1) will perform a reset when the session is opened;
passing
VI_FALSE (0) will not perform a reset,
•
ViPSession instrumentHandle: a pointer to an instrument session.
InstrumentHandle is the handle which addresses the instrument, and is
the first parameter passed in all driver functions.
Successful completion of this function returns
VI_SUCCESS
- Programming Guide 1
- 08164-90B64 2
- Warnings and Notices 3
- In this Manual 5
- Related Manuals 6
- Table of Contents 7
- Specific Commands 43 8
- VISA Programming Examples 189 9
- Error Codes 257 10
- Index 271 10
- List of Figures 11
- List of Tables 13
- Introduction to Programming 15
- GPIB Interface 16
- Figure 1 Remote Control 18
- Message Queues 19
- How the Input Queue Works 20
- The Output Queue 21
- The Error Queue 22
- Programming and Syntax 23
- Diagram Conventions 23
- Short Form and Long Form 24
- Command and Query Syntax 25
- Data Types 26
- Slot and Channel Numbers 26
- Laser Selection Numbers 27
- Common Commands 29
- Common Command Summary 30
- Common Status Information 31
- The Status Model 33
- Status Byte Register 35
- Status Summary 35
- Status System for 8166A/B 36
- Annotations 37
- Status Command Summary 40
- Other Commands 41
- Specific Commands 43
- Specific Command Summary 44
- page 154 46
- :TRIGger 53
- :TRIGger:CONFiguration 53
- :TRIGger[n][CHANnel[m]] 53
- Instrument Setup and Status 55
- IEEE-Common Commands 56
- • GPIB (interface) state 61
- • Output queue 61
- Settings – The SYSTem 76
- → +20<END> 78
- Root Layer Command 80
- → #536570 83
- → 1200e-6,2.019\n 1210e-6 84
- Measurement Functions – The 85
- SENSe Subsystem 85
- Measurement Running 94
- Measurement Stopped 94
- → interpreted as 98
- → +1.00000000E+000<END> 102
- → -2.00000000E+001<END> 103
- → 1<END> 104
- → +6.5000E+001 110
- → +8.00000000E-002<END> 111
- → +1.80000000E-001<END> 112
- Subsystem 113
- → HIGH<END> 114
- → +0<END> 116
- → 0<END> 117
- → 50<END> 118
- → +1<END> 119
- → +4.00000E+03<END> 120
- → +8.000E+01<END> 121
- [PM 130
- → -1.00000000E+013<END> 135
- → +1.5500000E-006<END> 135
- <wsp> 137
- <value> 137
- → +3<END> 137
- → +5.00000000E-001<END> 138
- → STEP<END> 141
- → ONEW<END> 142
- → +5.00000000E-008<END> 143
- → +1.50000000E-006<END> 144
- → +1.55000000E-006<END> 145
- manual sweep 146
- → +5.00000000E-009<END> 147
- Signal Conditioning 148
- → 2<END> 149
- → 12<END> 152
- → 6<END> 153
- Offset ( λ ) 161
- → +2,+1<END> 162
- UM 163
- 163
- → 1000 entries) 164
- Slot Numbers 165
- Command Semantic 166
- Display and System Commands 167
- IEEE Commands 167
- Status Commands 168
- User Calibration Data 168
- Signal Routing 169
- Triggering - The TRIGger 171
- → ign<END> 174
- → 5<END> 175
- → dis<END> 176
- ..... 180
- Tun able 182
- Display Operations – The 186
- DISPlay Subsystem 186
- VISA Programming Examples 189
- How to Use VISA Calls 190
- How to Set up a Fixed Laser 192
- How to Measure Power using 195
- FETCh and READ 195
- How to Co-ordinate Two 199
- How Power Varies with 203
- Wavelength 203
- How to Log Results 207
- Installing the Agilent 816x 214
- Instrument Driver 214
- Using Visual Programming 218
- Environments 218
- Getting Started with LabView 221
- Features of the Agilent 816x 225
- Directory Structure 226
- Opening an Instrument Session 227
- Closing an Instrument Session 228
- VISA Data Types and Selected 229
- Constant Definitions 229
- Error Handling 230
- Agilent VEE 5.01 (or higher) 233
- Online Information 234
- Lambda Scan Applications 235
- Equally Spaced Datapoints 236
- Scan Application 239
- Laser Source 245
- Compatibility Issues 246
- Status Model 247
- Preset Defaults 248
- Removed Command 249
- Obsolete Commands 250
- Changed Parameter Syntax and 251
- Semantics 251
- Changed Query Result Values 252
- Timing Behavior 253
- Command Order 255
- Instrument Status Settings 256
- Error Codes 257
- GPIB Error Strings 258
- Agilent Technologies 274
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