Index

ranging

resistance

security code (calibration)

autoranging, 20, 61

2-wire

changing, 98

front-panel keys, 20

connections, 17

factory setting, 95

overload, 61, 142

math functions allowed, 63, 124

rules, 95

selecting, 20

ranges, 17

string length, 95

ratio (dcv:dcv) measurements

4-wire

self-heating errors, 210

connections, 44

connections, 17

self-test

front panel, 44

math functions allowed, 63, 124

complete test, 13, 86

math functions allowed, 63, 124

ranges, 17

errors, 179

selecting, 45

resistance, input, 53

reading memory, 84, 86

READ?, 114, 130

resolution

power-on test, 13, 86

reading hold

front-panel keys, 21

sensitivity, 226

beeper control, 88

“half” digit, 21, 54

sensitivity band (reading hold), 43, 82

description, 43, 82

power line cycles, 54

serial interface (RS-232)

front-panel, 43

setting, 21

baud rate selection, 93, 148, 163

sensitivity band, 43, 82

vs. autozero, 59

cables recommended, 95, 150

reading memory

vs. integration time, 54

commands, 153

functions allowed, 46, 84

retrieving stored readings, 46

connector location, 5, 150

number of readings stored, 84

revision query (firmware), 89

connector pinout, 150

retrieving readings, 46

ROUTe:TERMinals?, 58, 123

data format, 159

storing readings, 46

RS-232 interface

handshake protocol (DTR/DSR), 151

readings, number of, 77

baud rate selection, 93, 148, 163

parity selection, 93, 164

rear panel

cables recommended, 150

pass/fail outputs, 70, 150

input terminals, 5

commands, 153

pin definitions, 150

pictorial overview, 5

connector location, 5, 150

selecting interface, 92, 162

rear terminals

connector pinout, 150

TALK ONLY mode, 91, 160

query setting, 58, 123

data format, 159

serial poll, 137

selecting, 58

handshake protocol (DTR/DSR), 151

service request (SRQ), 69, 137

reciprocal counting technique, 213

parity selection, 93, 164

settling

register diagram (status), 135

pass/fail outputs, 70, 150

delays, 204

regulatory requirements, 237

pin definitions, 150

trigger, 79

relative value (dB), 40, 67

selecting interface, 92, 162

signal filter, 51, 214

relative measurements

TALK ONLY mode, 91, 160

single trigger, 42, 73

description, 38, 65

rubber bumpers, removing, 23

sliding-shelf kit, 24

front panel, 38

 

slow ac filter, 51, 214

functions allowed, 63, 124

S

software (bus) triggering, 75, 127

Null Register, 38, 66

SAMPle:COUNt, 77, 131

specifications, 215

null test lead resistance, 38, 65, 204

standard event register

samples, number of, 77

remote interface

bit definitions, 140

SCPI

GPIB connector, 5

clearing, 141

command summary, 105-111

GPIB selection, 92, 162

status byte

compliance information, 168

language restrictions, 92, 94

bit definitions, 136

data types, 158

RS-232 connector, 5, 150

clearing, 136

language introduction, 154

RS-232 selection, 92, 162

summary register, 136

status model, 134

replacing fuses, 100

 

syntax conventions, 50, 105, 155

 

reset state, 101

 

version query, 90, 133

 

 

 

Index

235

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Agilent Technologies 34401A manual 235
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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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