Index

ac voltage measurements ac filter, 114, 361 connections, 21 loading errors, 364

low frequency filter, 114, 361 ranges, 21, 113

settling time, 114, 361 signal conditioning, 359 true RMS measurements, 360

accuracy, 417 accuracy specifications

ac measurements, 406 dc measurements, 404 actuator switching, 59, 384

address (GPIB) factory setting, 150 selecting, 3, 150

address, channel number, 23, 181 ADRS annunciator, 4 Advanced key, 36, 104 ALARM annunciator, 4, 124 alarm data, viewing, 126 Alarm key, 35, 40, 125

alarm limits annunciators, 124 clearing alarm outputs, 129 configuring, 40

default settings, 41, 124 interaction with Mx+B, 40, 123 output connector location, 5 output connector pinout, 128 output latch mode, 128 output slope (polarity), 129 output track mode, 128

scan on alarm, 84 setting limits, 40 with readings, 87 Alarm Out key, 35, 129

alarm output lines clearing, 129 connector location, 5 connector pinout, 128 latch mode, 128 slope (polarity), 129 track mode, 128

alarm queue, 41 clearing, 122, 126 number of alarms, 122 output format, 127 storing alarms, 122, 126

alarm register (status) bit definitions, 284 clearing bits, 284 Alarms connector, 128

alarms

alarm output lines, 128 annunciators, 124 default limit values, 124 description, 122 front-panel annunciators, 124 hardware output lines, 124, 128 interaction with Mx+B, 123 output connector, 128

setting limits, 125

status register group, 284 storing in alarm queue, 122 storing in reading memory, 122 viewing alarm queue, 126 viewing reading memory, 126 while scanning, 75

with multifunction module, 130 alpha (α ) for RTDs

default, 110 values, 110

analog-to-digital conversion explanation, 61 integrating technique, 61 non-integrating technique, 61

annunciators, 4, 124 aperture time

command syntax, 217 definition, 103 selecting, 103

application programs C and C++, 328 Excel 7.0, 321, 322

attenuation, 336, 344, 387 auto answer (modem), 274 automatic channel delays, 89 automatic recall, power-down, 48, 77 autorange, threshold values, 98

autozero definition, 105

vs. integration time, 105 average responding error, 360 average, during scan, 75 AWG, wire gauge size, 336

“B” (Mx+B scaling offset), 119 backplane relays, 164, 166, 276, 383 bandwidth (ac)

ac current, 116 ac voltage, 114

vs. channel delays, 89 bank switch, 164, 166, 176, 383 battery life, 408

baud rate (RS-232) factory setting, 47, 152 selecting, 47, 152

BBM switching, 378

BenchLink Data Logger Software creating floppy disks, 19 installation, 18, 19

on-line help, 19 software overview, 6 system specifications, 412

bias current, dc loading errors, 358 binary format, digital read, 42, 133 bits, vs. integration time, 103, 203 block diagram

34970A, 53 internal DMM, 60

BNC cable kits 34905A, 173 34906A, 173

boolean parameters, 300 braces ({ }), syntax, 73, 181 brackets ([ ]), syntax, 73, 181 break-before-make switching, 378 bridge, strain gage, 375 buffering triggers, 83 bumpers, removing, 30

burden voltage, 368

422

34970A specifications

Agilent Technologies 34970A is a versatile data acquisition and measurement system that has gained popularity in various industries, including research and development, manufacturing, and education. The primary purpose of the 34970A is to offer an efficient solution for data collection, monitoring, and analysis, which can significantly enhance productivity and accuracy in testing applications.

One of the main features of the 34970A is its modular design, allowing users to customize the system according to their specific measurement needs. The mainframe can accommodate up to three plug-in measurement modules, which can include various types of measurements such as analog, digital, temperature, and frequency. This modularity provides flexibility for users to tailor the system to their requirements, making it highly adaptable to different applications.

Another notable characteristic of the Agilent 34970A is its impressive channel configuration. The system can support up to 120 measurement channels when fully configured, enabling extensive data acquisition without the need for multiple devices. This capability is essential for applications requiring simultaneous monitoring of multiple parameters or locations.

The 34970A utilizes advanced signal processing technologies to ensure high-accuracy measurements. The internal 6.5-digit resolution multimeter provides precise readings, while the device also supports various input types, such as thermocouples and RTDs for temperature measurements. The ability to perform mathematical functions, such as summation and averaging, on the acquired data further enhances its usability.

For data storage and management, the Agilent 34970A features built-in memory for storing up to 20,000 readings. Users can also easily transfer data to a PC through the RS-232 interface or GPIB (IEEE 488) for further analysis and reporting. Additionally, it offers the capability to program automatic data logging and scheduling of measurements, which streamlines the testing process and reduces manual intervention.

In terms of user interface, the 34970A is equipped with a large graphical display that provides clear visualization of measurement data and easy navigation through settings and options. The menu-driven interface makes it accessible for users of all skill levels, simplifying the setup and operation of the device.

Overall, the Agilent Technologies 34970A stands out for its modularity, high channel capacity, advanced measurement technologies, and user-friendly interface. As a reliable and efficient data acquisition system, it is well-suited for a wide range of applications, making it an essential tool for engineers and technicians looking to enhance measurement precision and efficiency.