TECHNICAL COURSE OVERVIE W OVERVIE W 34970A Data Acquisition/ Switch Unit Family 34970A 34972A Notice: The 34972A will be discontinued on June 1, 2020. The last day to place order for this product is May 31, 2020. Keysight will continue to provide world-class support for this product for the standard period of 5 years.
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, RS-232 –– 34972A: LAN, USB –– Graphical Web interface for point and click monitor and control
Features Price and performance beyond compare Go ahead and compare the Keysight Technologies, Inc. 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 BenchVue DAQ, 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 lim
The Keysight 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 Keysight 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 a Keysight 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.
Sof tware drivers Your months of test system software development time need not go to waste. Software drivers that support (C, C#, Visual Basic, Visual Studio), Keysight 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 Keysight 34970A/34972A with plug-in modules More channels in less space Surface mount construction and a highly integrated design minimize the space required for relay drive and interface circuitry. High density on-module connectors save both board and connector space normally required by a terminal block.
Keysight 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 Keysight 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 - 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 ±1°C 90 Day 23 ±5°C 1 Year 23 ±5°C Temperature coefficient 0 – 18°C, 28 - 55°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.
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 Keysight BenchVue DAQ (Now included) Computer interfaces [3] 34970A GPIB RS-232 (Serial port) 34972A LAN USB 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 Gen
Modules Specifications The Keysight 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 The Keysight 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. Two- and four-wire channels may be mixed on the same module.
34903A 20-Channel Actuator/General Purpose Switch NC –– SPDT (Form C) latching relays –– 300 V, 1 A actuation and control 01 COM NO 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 Keysight 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, oscillo-scope, spectrum analyzer, or other instrumentation.
34907A Digital input/ouput Multifunction Module Use the digital outputs with an external power supply to control microwave switches and attenuators, solenoids, power relays, indicators, and more. Use the digital inputs to sense limit switch and digital bus status. There are no complex handshake modes; reads and writes are initiated either from the front panel or the bus.
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). Find us at www.keysight.
Ordering Information Mainframe 34970A 34972A Data Acquisition/Switch Unit with RS-232 and GPIB Data Acquisition/Switch Unit with LAN and USB Both mainframes include internal 61/2 digit DMM, test report, power cord, thermocouple, and screwdriver. Modules are purchased separately and are required to operate. Option 001 Delete Internal DMM Same as above but deletes DMM and Quick Start package. Order 34970-80010 to retrofit DMM at a later time.
