Agilent 34970A Data Acquisition/ Switch Unit Family Product Overview 34970A 34972A Agilent performance at a fraction of the cost of other standalone data acquisition systems • 3-slot mainframe with built-in 6½ digit DMM and 8 optional switch and control plug-in modules • Measures and converts 11 different input signals: temperature with thermocouples, RTDs and thermistors; dc/ac volts; 2- and 4-wire resistance; frequency and period; dc/ac current • IO options for easy connectivity to your PC: 34970A: GPIB
Table of Contents 3 6 7 10 11 12 13 13 14 15 16 18 19 19 20 21 23 23 24 25 26 27 2 Features 34970A/34972A Power and Flexibility 34970A/34972A for your data acquisition applications Using the 34970A/34972A for ATE applications ATE feature checklist Using the 34970A/34972A for switching applications Customize your 34970A/34972A with plug-in modules Modules at a glance selection guide Agilent quality Spec interpretation guide Accuracy specifications System measurement rates System specifications Agilent Benc
Features Price and performance beyond compare Go ahead and compare the Agilent Technologies 34970A and 34972A Data Acquisition/Switch Units with other data acquisition systems currently available. You’ll find it hard to come up with a system that offers the powerful measurement performance, flexibility, connectivity options and ease of use of the 34970A/34972A—even in systems costing three to five times as much.
Easy to use graphical Web interface (34972A only) The built-in graphical Web interface provides easy access and control of the instrument using a Java-enabled Web browser such as Internet Explorer. Using this interface you can configure measurements, define and execute scan lists, or monitor measurement results from anywhere on the network.
Unequaled ease of use 34970A and 34972A are compatible From the simplified configuration to the graphical Web interface in the 34972A, we put in extra time and energy so you don’t have to.
More power and flexibility than you ever imagined you could afford 6½ digit (22-bit) internal DMM measures 11 functions without external signal conditioning Intuitive front panel with task-oriented, self-guiding menus 50 k readings of non-volatile memory holds data when power is removed Monitor display mode lets you keep an eye on tests in progress Scaling function for converting raw inputs into user-defined units Battery-backed real-time clock for pacing scans and timestamping readings HI/LO alarm limi
The Agilent 34970A/34972A offers unequaled versatility for your data acquisition applications In the past, you had to make a choice. On the one hand, you could choose the simple operation and low cost of a data logger. On the other hand, you had the flexibility and higher performance of a modular data acquisition system.
An easy-to-use data logger for monitoring and characterization applications Data loggers are used to monitor multiple signals (temperature, voltage, etc.) over extended periods of time to identify irregularities. Example applications include environmental chamber monitoring, component inspection, benchtop testing, process troubleshooting, and temperature profiling. The Agilent 34970A/34972A is easy to use for a multitude of data logging and monitoring applications, either standalone or with a computer.
And the 34970A/34972A measures and converts 11 different input signals: • temperature with thermocouples, RTDs, and thermistors • dc and ac volts • 2- and 4-wire resistance • frequency and period • dc and ac current What’s more, each channel is independently configurable. This means you can configure channel 1—for dcV, channel 2 for a K-type thermocouple, and channels 3 and 13 for a 4-wire RTD measurement—all on the same module, all in a single scan.
A powerful, flexible data acquisition system for automated test The 34970A/34972A gives you the resolution, accuracy, repeatability, and speed you’ve come to expect from an Agilent data acquisition system. It provides the measurement muscle you need, along with signal routing and control capability, in a flexible, modular format that can grow and change to match your varied applications.
Software drivers Your months of test system software development time need not go to waste. Software drivers that support (C, C#, Visual Basic, Visual Studio)®, Agilent VEE and National Instruments LabView are available for the 34970A/34972A to make integration into your test system easy. Standard RS-232 and GPIB interfaces on the 34970A or LAN and USB on the 34972A and SCPI programming language make integration even easier. ATE feature checklist • 3-slot cardcage with 6½ digit (22 bit) internal DMM • 0.
Low-cost, high-quality switching for automated test If you don’t need the built-in measurement capability of the 34970A/34972A, save money by ordering it without the DMM. What you end up with is the lowest cost switch unit on the market. It’s an ideal solution for routing test signals to and from your DUT and assorted instruments, including external DMMs, scopes, counters, and power supplies. Plus, you can add the DMM later if your needs change.
Customize your Agilent 34970A/34972A with plug-in modules More channels in less space A complete selection of plug-in modules gives you high quality measurement, switching, and control capabilities to choose from. Modules include both low-frequency and RF multiplexers, a matrix switch, a general-purpose switch, and a multifunction module that includes digital input/output, analog output, and totalizer capabilities.
Agilent quality Take the guesswork out of relay maintenance We know you can’t afford instrument downtime due to hardware failures and unscheduled maintenance. That’s why our engineers designed reliability into the 34970A/34972A: A rugged enclosure, state-of-the-art surface mount construction throughout, reduced parts counts, and rigorous and thorough testing on all aspects of the product.
Spec interpretation guide Example 2: Extreme operating temperature The following pages list the technical specifications for the Agilent 34970A/34972A Data Acquisition/Switch Unit and its modules. The explanations and examples below are helpful in understanding how to interpret these specifications: When the 34970A/34972A is used outside of its 18 °C – 28 °C temperature range, there are additional temperature drift errors to consider.
34970A/34972A accuracy specifications ± (% of reading + % of range)[1] Includes measurement error, switching error, and transducer conversion error Range [3] 24 hour [2] 23 °C ± 1 °C 90 Day 23 °C ± 5 °C 1 Year 23 °C ± 5 °C 0.0030 + 0.0035 0.0020 + 0.0006 0.0015 + 0.0004 0.0020 + 0.0006 0.0020 + 0.0020 0.0040 + 0.0040 0.0030 + 0.0007 0.0020 + 0.0005 0.0035 + 0.0006 0.0035 + 0.0030 0.0050 + 0.0040 0.0040 + 0.0007 0.0035 + 0.0005 0.0045 + 0.0006 0.0045 + 0.0030 0.0005 + 0.0005 0.0005 + 0.0001 0.0005 + 0.
Measurement characteristics[7] DC voltage Measurement Method A/D linearity Input resistance 100 mV, 1 V, 10 V ranges 100 V, 300 V ranges Input bias current Input protection True RMS AC voltage Measurement method Crest factor Additional crest factor errors (non-sinewave) Input impedance Input protection Resistance Measurement method Continuously Integrating Multi-slope III A-D converter 0.0002% of reading + 0.
Single channel reading rates to I/O or internal memory (See footnotes for conditions below) Single channel ASCII readings Single channel while changing scale (eg MEAS dcV 10/MEAS dcV 1) Single channel while changing function (eg MEAS dcV/MEAS Ohms) 34970A into memory to GPIB or RS232 readings/sec readings/sec 500 25 440 25 34972A to LAN, USB or memory readings/sec 500 25 12 12 12 Scanning measurement rates to I/O or internal memory (See footnotes for conditions below) Scanning dcV or ohms channels
System specifications Software Scanning inputs Analog Agilent 34825A BenchLink Data Logger 3 (included with option DMM) Digital Scan list Scan triggering Source Scan count Scan interval Channel delay External trig delay External trig jitter Alarms Analog inputs Digital inputs Monitor channel Alarm outputs Latency Memory Battery Readings States Alarm queue USB flash drive System features Per-channel math Power fail recovery Relay maintenance Real-time clock General specifications Power supply Power line
Modules specifications DMM connections are accessible only through the 34901A, 34902A, and 34908A low-frequency multiplexers. The Agilent 34970A/34972A accuracy specifications already include the switching offset and reference junction errors shown below. These errors are listed separately for determining system error with external measurement devices. Up to three modules, in any combination, can be inserted into a single mainframe.
Multiplexer selection guide Choose between the broad functionality of the 34901A, the high speed scanning of the 34902A, or the single-ended density of the 34908A. These three modules are the only way to connect to the 34970A/34972A internal DMM. They can be used to scan with external instruments as well. All multiplexer modules employ break-before-make scanning, ensuring only one closed channel (or channel pair) at a time.
34902A 16-Channel High-Speed Multiplexer • Scanning up to 250 ch/s • Two- and four-wire scanning • Built-in thermocouple reference junction Backplane switches Channel switches H H L L Internal DMM input H L H The Agilent 34902A employs reed relays to achieve scan rates up to 250 channels per second. Use this module for high-throughput automated test applications as well as high-speed data logging and monitoring tasks. Sixteen two-wire inputs switch up to 300 V.
34903A 20-Channel Actuator/General Purpose Switch • SPDT (Form C) latching relays • 300 V, 1 A actuation and control This general purpose switch module has 20 independent single-pole, double-throw (SPDT) relays. Use it to cycle power to products under test, control indicator and status lights, and to actuate external power relays and solenoids. Combine it with matrix and multiplexer modules to build custom switch systems.
34905A 50 Ω 34906A 75 Ω Dual 4-Channel RF Multiplexers 11 • 2 GHz bandwidth • BNC to SMB adapter cables included 12 Com The Agilent 34905A and 34906A RF multiplexers offer broadband switching capabilities for high frequency and pulsed signals. Use them to route test signals between your device under test and your signal generator, oscilloscope, spectrum analyzer, or other instrumentation.
34907A Digital input/ouput Multifunction Module • 16 bits of digital input and output • 100 kHz totalizer input • Two ± 12 V analog outputs The Agilent 34907A allows great flexibility for a variety of sense and control applications. It combines two 8-bit ports of digital input and output, a 100 kHz gated totalizer, and two ± 12 V analog outputs—all on a single earthreferenced module. The digital inputs and totalizer input may be included in a scan.
Rack mounting and dimensions To rack mount a single instrument, order adapter kit 34190A. To rack mount two instruments side-by-side, order 34191A 2U dual flange kit and 34194A dual lock link kit. To install one or two instruments in a sliding support shelf, order shelf 5063-9255, and slide kit 1494-0015 (for single instrument, also order filler panel 5002-3999).
Ordering Information Accessories 11062A 34830A Mainframe 34970A Data Acquisition/Switch Unit with RS-232 and GPIB 34972A Data Acquisition/Switch Unit with LAN and USB Both mainframes include internal 6½ digit DMM, test report, power cord, thermocouple, and screwdriver. Included CD ROM has Agilent BenchLink DataLogger3 software, IVI-COM and VXI PnP Drivers, Example Code Wizard, Programmers Reference Help File, Users Guide, Quick Start Tutorial and Service Guide.
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