429

Index

reference thermocouple,				349	revision number (firmware)
register diagram (status), 276					34970A, 146
relative time, 87					plug-in modules,		146
relay contact protection,				385	RF cable kits (SMB-to-BNC), 173
relay contact resistance,				399	RF multiplexers
relay cycle count					insertion loss, 391
clearing,	148				performance graphs,				411
estimating relay life,				399	sources of error,		391
reading,	147, 399				VSWR, 391
relay life					RFI radiation,	339
relay maintenance system, 399					ribbon cables,	55
vs. load switched,			400		RMT annunciator,		4
vs. relay life,		400			rosette (strain gage),			374
relay maintenance system					ROUTe:CHAN:ADV:SOUR command, 97
clearing relay count,				148	ROUTe:CHAN:DELay command, 88, 229
reading relay count, 147, 399					ROUTe:CHAN:DELay:AUTO command, 230
remote interface, GPIB (IEEE-488)					ROUTe:CHAN:FWIRe command,					97, 243
address selection,			46, 151		ROUTe:CHAN:ADV:SOUR command, 242
cable, 51					ROUTe:CLOSe command, 259
connector, 5					ROUTe:CLOSe:EXCL command, 259
interface selection,			46, 151		ROUTe:DONE? command, 260
setting address, 150					ROUTe:MON:DATA? command,					94
factory address setting, 150					ROUTe:MON:STATe command,					94
remote interface, RS-232 (serial)					ROUTe:MON command,				238
baud rate, 47					ROUTe:MONitor:DATA? command, 238
cable, 51					ROUTe:MON:STATe command,					238
flow control,		47			ROUTe:OPEN command,				259, 260
parity, 47					ROUTe:SCAN command,				79, 228, 240
stop bits, 47					ROUTe:SCAN:SIZE? command, 228, 240
RES:OCOMpensated command, 224					RS-232 (serial) interface
reset mode, totalizer,			44, 76		baud rate, 152
resistance ladder, 384					cables, 17, 51, 273
resistance measurements					connection to computer, 272
2-wire ohms,		369			connector location,			5
4-wire ohms,		369			connector pinout, 273
connections,		21			data frame format,			272
nominal (RTD), 110, 222					flow mode, 153
offset compensation,				115, 371	selecting interface,			151
ranges,	21				parity, 152
resolution,	417				troubleshooting,		273
“half” digit, 100					RTD measurements,			110
command syntax,			216		alpha (α ), 110
selecting, 101					conversion accuracy,				345
vs. integration time,				103, 203	measurement tutorial, 346
result codes (modem), 274					connections,	21
					measurement units,				106
					supported types,		21, 106
					RTS/CTS flow mode (RS-232),					153
					rubber bumpers, removing, 30

safety information, inside front cover Sample (*) annunciator, 4

sample programs C and C++, 328 Excel 7.0, 321

scale, temperature units, 106 scaling (Mx+B)

custom label, 39, 120 default gain (“M”), 121 default offset (“B”), 121 equation used, 119 interaction with alarms, 119 null stored as offset, 119 setting gain (“M”), 39, 121 setting offset (“B”), 39, 121 strain measurements, 375 valid gain (“M”) values, 120 valid offset (“B”) values, 120 while scanning, 75, 119

SCAN annunciator, 4

scan configuration, copying, 25 scan configuration, front panel, 23 scan count

continuous, 38, 86 default value, 38, 86 settings, 38, 86

scan interval

default value, 38, 81 resolution, 81

setting from front panel, 81 setting from remote, 81

Scan key, 24, 78 scan list

adding channels to, 78 building from front panel, 78 building from remote, 79 defining, 23, 24 examples, 73, 181 reading digital input, 42 reading totalizer count, 44 rules, 73, 181

scan sweep, defined, 78, 80

Index

429 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.

Agilent Technologies 34970A manual 429

Models: 34970A

Index

34970A specifications