Index

Index

status register commands, 144 description, 134 diagram, 135 enable register, 134 event register, 134

*STB?, 138, 145 stop bits, 148 storing readings

functions allowed, 46, 84 number of readings stored, 84 retrieving readings, 46 storing readings, 46

string length calibration message, 99 displayed message, 87 error queue, 85 identification string, 89

string parameters, 159 summary register

clearing, 136 definition, 136 support-shelf kit, 24

syntax conventions, 50, 105, 155 SYSTem:BEEPer, 88, 133 SYSTem:ERRor?, 85, 133

T

TALK ONLY mode, 91, 92, 160 temperature coefficient, 210, 224, 228 terminals

Ext Trig, 5, 83 Front/Rear switch, 2, 58 GPIB interface, 5 query setting, 58 RS-232 interface, 5 VM Comp, 5, 83

terminators, input message, 157

test

complete self-test, 13, 86 power-on self-test, 13, 86 reading memory, 84, 86 self-test errors, 179

test lead resistance, 38, 64, 198 thermal EMF errors, 198 threshold resistance, continuity, 52 transfer accuracy, 228

*TRG, 75 TRIGGER, 75 TRIGger:COUNt, 78, 131 TRIGger:DELay, 80, 131 TRIGger:DELay:AUTO, 80, 131 TRIGger:SOURce, 73, 130 triggering

abort measurements, 76 auto trigger, 42, 73 commands, 130 delay, 79

external trigger, 42, 74, 83 flowchart, 72 front-panel, 42

idle trigger state, 76, 129 internal, 75

multiple readings (samples), 77 multiple triggers, 78

single trigger, 42, 73 software (bus) trigger, 75, 127 sources, 73 “wait-for-trigger” state, 76, 129

*TST?, 86 tutorial

front-panel menu, 29 measurement, 197

twisted-pair connections, 201 two-wire ohms

connections, 17

math functions allowed, 63, 124 ranges, 17

V

vacuum-fluorescent display, 1 version

firmware, 89 SCPI, 90

VM Comp terminal, 5, 83 voltage

ac voltage connections, 17 loading errors, 209

math functions allowed, 63, 124 ranges, 17

signal filter, 51, 214 dc voltage

connections, 17 input resistance, 53 loading errors, 199

math functions allowed, 63, 124 ranges, 17

voltage selector module, 15 Voltmeter Complete terminal, 5, 83

W

“wait-for-trigger” state, 76, 129 warranty information, inside front cover weight, product, 222

wiring adapter (RS-232), 149 wiring connections

2-wire ohms, 17

4-wire ohms, 17 ac current, 18 ac volts, 17 continuity, 19 dc current, 18 dc volts, 17 dcv:dcv ratio, 44 diode, 19 frequency, 18 period, 18

Z

zero measurements, 59, 213

236

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34401A specifications

Agilent Technologies 34401A is a highly reputable digital multimeter (DMM), renowned for its accuracy, versatility, and performance in a wide range of measurement applications. First introduced in the early 1990s, the 34401A has become a staple in laboratories, manufacturing environments, and educational institutions due to its robust build and comprehensive features.

One of the standout characteristics of the 34401A is its impressive accuracy, boasting a basic DC voltage accuracy of 0.0035%, making it ideal for precise measurements in electronic testing. The multimeter offers a wide range of measurement capabilities, including voltage (DC and AC), current (DC and AC), resistance, frequency, and continuity test, making it a highly versatile tool for engineers and technicians.

The 34401A utilizes a 6½-digit resolution, enabling the user to measure small changes in electrical signals with remarkable precision. With a sampling rate of up to 1000 readings per second, it can handle dynamic test requirements, providing timely results without sacrificing measurement integrity.

In terms of connectivity, the Agilent 34401A includes a GPIB (General Purpose Interface Bus) for remote operation, allowing users to automate their testing processes and integrate the multimeter easily into larger measurement systems. This feature is particularly beneficial in automated test environments, where speed and accuracy are paramount.

Additionally, the DMM incorporates advanced measurement functions, such as statistical analysis, including mean, standard deviation, and minimum/maximum readings, which provide users with valuable insights into their data. The instrument's user-friendly interface, complete with a clear digital display and intuitive controls, enhances usability and ensures that users can easily navigate its various functions.

Robust software support further extends the capabilities of the Agilent 34401A. It is compatible with a range of software tools for data logging and analysis, enabling users to efficiently document and analyze their measurements over time.

In summary, Agilent Technologies 34401A stands out in the realm of digital multimeters due to its high accuracy, extensive measurement functionalities, and user-friendly features. Whether for research and development, quality control, or educational purposes, the 34401A remains a preferred choice for professionals demanding reliable and precise measurement solutions. Its enduring legacy in the industry speaks to its performance and reliability, making it an essential tool for anyone involved in electronic testing and measurement.
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