Agilent 34970A Data Acquisition/Switch Unit Product Overview Agilent performance at a fraction of the cost of other standalone data acquisition systems
Table of Contents 4 6 7 8 9 10 11 11 12 13 14 16 16 17 18 20 20 21 22 23 24 Features Using the 34970A for data logging applications Data Logging Feature Checklist Using the 34970A for ATE applications ATE Feature Checklist Using the 34970A for switching applications Customize your 34970A with plug-in modules Modules-at-a-Glance Selection Guide Agilent Quality Spec Interpretation Guide Accuracy Specifications System Specifications Software Modules Specifications Multiplexers (34901A, 34902A, and 34908A) Ac
Price and performance beyond compare Custom configurations that-grow with you Go ahead and compare the Agilent Technologies 34970A Data Acquisition/Switch Unit 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, and ease of use of the 34970A— even in systems costing three to five times as much.
More power and flexibility than you ever imagined you could afford Intuitive front panel: task-oriented, self-guiding menus 6 1/2-digit (22-bit) internal DMM measures 11 functions without external signal conditioning 50k 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 HI/LO alarm limits on each input channel, plus 4 TTL alarm outputs 3-slot mainframe offers
The Agilent 34970A 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. The Agilent 34970A Data Acquisition/Switch Unit gives you the best of both worlds: a simple user interface with low per-channel cost, modular flexibility, and impressive measurement performance.
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 is easy to use for a-multitude of data logging and monitoring applications, either stand-alone or with a computer.
And the 34970A 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 1for 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 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 Agilent VEE and National Instruments LabView® are available for the 34970A to make integration into your test system easy. Standard RS-232 and GPIB interfaces and SCPI programming language make integration even easier. ATE Feature Checklist • 3-slot cardcage with 61/2 digit (22 bit) internal DMM • 0.004% basic 1-year dcV accuracy; 0.
Low-cost, high-quality switching for automated test If you don’t need the built-in measurement capability of the 34970A, 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.
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 onmodule connectors save both board and con-nector space normally required by a terminal block. We use the latest technology to squeeze the most out of the remaining board space, giving you up to 40 single-ended channels in roughly the same space used by many data acquisition system terminal blocks.
Agilent Quality 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: A rugged enclosure, state-of-theart surface mount construction throughout, reduced parts counts, and rigorous and thorough testing on all aspects of the product.
Spec Interpretation Guide The following pages list the technical specifications for the Agilent-34970A Data Acquisition/Switch Unit and its modules. The explanations and examples below are helpful in understanding how to interpret these specifications: • Measurement accuracy is specified as percent of reading plus percent of range, where reading is the actual measured value and range is the name of the scale (1V, 10V, etc.)—not the full scale value (1.2V, 12V, etc.).
Accuracy Specifications ±(% of reading + % of range)[1] Includes measurement error, switching error, and transducer conversion error Range[3] Frequency, etc. 24 Hour[2] 23°C±1°C 90 Day 23°C±5°C 1 Year 23°C±5°C Temperature Coefficient 0°C–18°C, 28°C–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.
Measurement Characteristics[8] Operating Characteristics[4] DC Voltage Measurement Method Single Channel Measurement Rates [5] Function Resolution [9] 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.
System Specifications Software Scanning Inputs Analog Agilent BenchLink Data Logger 3 (not included with Option 001) 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 34901A, 34902A, and 34908A multiplexer channels 34907A digital in and totalize Scans channels in ascending order Interval, external, button press, software, or on monitor channel alarm 1 to 50,
Modules Specifications The Agilent-34970A 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. The 34970A’s internal DMM connections are accessible only Multiplexer through the 34901A, 34902A, and 34908A lowfrequency multiplexers.
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 internal DMM. They can be used to scan with external instruments as well. All multiplexer modules employ break-beforemake scanning, ensuring only one closed channel (or channel pair) at a time.
Backplane Switches 34902A 16-Channel High-Speed Multiplexer • 250 ch/s scanning • Two- and four-wire scanning • Built-in thermocouple reference junction Internal DMM Input T 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.
34903A 20-Channel Actuator/General Purpose Switch • SPDT (Form C) latching relays • 300 V, 1A 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: 34906A 75: 11 12 Dual 4-channel RF Multiplexers • 2 GHz bandwidth • BNC to SMB adapter cables-included Com 13 14 The Agilent 34905A and 34906A RF multiplexers offer broadband switching capabilities for highfrequency 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 ±12V analog outputs 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 5063-9240 (Option 1CM). To rack mount two instruments side-by-side, order lock-link kit 5061-9694 and flange kit 5063-9212. 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 Mainframe 34970A Data Acquisition/Switch Unit Includes internal 6 1/2 digit DMM, Operating and Service Manuals, Test Report, power cord, and Quick Start package (includes Agilent Benchlink Data Logger II software, RS-232 cable, 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.
