Chapter 4 Making Measurements - Agilent Technologies 3458A User Manual

Chapter 4
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
Default Delays ............................................. 87
External Triggering .......................................... 87
External Trigger Buffering .......................... 88
Event Combinations ......................................... 88
Reading Formats .................................................... 92
ASCII ................................................................ 92
Single and Double Integer ................................ 92
Two's Complement Binary Coding ............. 92
Single Real ....................................................... 93
SREAL Example ......................................... 93
Double Real ................................................. 94
Using Reading Memory ......................................... 94
Memory Formats .............................................. 95
Overload Indication ..................................... 96
Recalling Readings ........................................... 96
Using Reading Numbers ............................. 96
Using Implied Read ..................................... 97
Sending Readings Across the Bus ......................... 98
Output Formats ................................................. 98
Overload Indication ..................................... 99
Output Termination .......................................... 99
Using the SINT or DINT Output Format ......... 99
SINT Example ............................................. 99
DINT Example .......................................... 100
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
PRESET FAST Command ........................ 103
Integration Time and Resolution ............... 104
Triggering Setup ........................................ 105
Delay Time ................................................ 105
Making Measurements
AC Bandwidth .......................................... 105
Offset Compensation ................................ 105
High-Speed DCV Example ....................... 105
High-Speed OHM (or OHMF) Example .. 105
High-Speed DCI Example ........................ 106
Fast Synchronous ACV/ACDCV Example 106
Fast Random ACV/ACDCV Example ..... 106
Fast Analog ACV/ ACDCV Example ...... 106
Fast ACI/ ACDCI Example ...................... 107
Fast FREQ (or PER) Example .................. 107
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
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 4 Making Measurements

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