Agilent Technologies 3458A User Manual page 8

Deleting States .................................................. 75
Using the Input Buffer ........................................... 75
Using the Status Register ....................................... 75
Reading the Status Register .............................. 77
Interrupts .......................................................... 77
Chapter 4 Making Measurements
Introduction ........................................................... 81
Triggering Measurements ...................................... 81
The Trigger Arm Event .................................... 82
The Trigger Event ............................................ 82
The Sample Event ............................................ 82
Event Choices ................................................... 82
Making Continuous Readings .......................... 82
Making Single Readings .................................. 83
Making Multiple Readings ............................... 83
Multiple Trigger Arming .................................. 84
Making Synchronous Readings ........................ 84
Making Timed Readings .................................. 85
Making Delayed Readings ............................... 86
External Triggering .......................................... 87
Event Combinations ......................................... 88
Reading Formats .................................................... 92
ASCII ................................................................ 92
Single and Double Integer ................................ 92
Single Real ....................................................... 93
Using Reading Memory ......................................... 94
Memory Formats .............................................. 95
Recalling Readings ........................................... 96
Sending Readings Across the Bus ......................... 98
Output Formats ................................................. 98
Output Termination .......................................... 99
Using the SINT or DINT Output Format ......... 99
Using the SREAL Output Format .................. 101
Using the DREAL Output Format .................. 101
Increasing the Reading Rate ................................ 102
High-Speed Mode ........................................... 102
Configuring for Fast Readings ....................... 103
High-Speed Transfer across GPIB ................. 107
High-Speed Transfer from Memory ............... 108
Determining the Reading Rate ....................... 109
The EXTOUT Signal ........................................... 110
Reading Complete .......................................... 112
Burst Complete ............................................... 113
Input Complete ............................................... 114
Aperture Waveform ........................................ 114
Service Request .............................................. 114
EXTOUT ONCE ............................................ 115
8 Contents
Math Operations .................................................. 116
Real-Time vs. Post-Process ........................... 116
Enabling Math Operations ............................. 116
Math Registers ............................................... 117
NULL ............................................................. 117
SCALE ........................................................... 119
Percent ............................................................ 120
DB .................................................................. 120
DBM .............................................................. 121
Statistics ......................................................... 122
Pass/Fail ......................................................... 123
FILTER .......................................................... 124
RMS ............................................................... 125
Measuring Temperature ................................. 125
Chapter 5 Digitizing
Introduction ......................................................... 129
Digitizing Methods .............................................. 129
The Sampling Rate .............................................. 131
Level Triggering .................................................. 132
Level Triggering Examples ............................ 132
Level Filtering ................................................ 134
DCV Digitizing ................................................... 134
DCV Remarks ................................................ 135
DCV Example ................................................ 136
Direct-Sampling .................................................. 137
Direct Sampling Remarks .............................. 138
Direct Sampling Example .............................. 139
Sub-Sampling ...................................................... 139
Sub-Sampling Fundamentals ......................... 140
The Sync Source Event .................................. 141
Sub-Sampling Remarks ................................. 143
Sending Samples to Memory ......................... 144
Sending Samples to the Controller ................ 144
Viewing Sampled Data ....................................... 146
Chapter 6 Command Reference
Introduction ......................................................... 151
Language Conventions ................................... 152
Command Termination .................................. 152
Multiple Commands ....................................... 152
Parameters ...................................................... 152
Query Commands .......................................... 153
Commands by Functional Group ........................ 155
Commands vs. Measurement Functions ............. 156
ACAL ............................................................. 157
ACBAND ....................................................... 158
ACDCI, ACDCV, ACI, ACV ........................ 159
ADDRESS ..................................................... 159