Multimeter Review / buyers guide: Part 1 - HP 3457A 6.5 / 7.5 digit precision bench multimeter - YouTube mjlorton

This is my review of the Agilent / HP 3457A 6.5 / 7.5 digit precision bench multimeter. --------------------- Click "Show more" ------------------------------- My website and forum:- http://www.mjlorton.com Donations and contributions:- http://www.mjlorton.com My techie channel MJLorton - Solar Power and Electronic Measurement Equipment - http://www.youtube.com/MJLorton My Techie Amazon Store: http://astore.amazon.com/m0711-20 My other channel VBlogMag - For almost any topic under the sun! - http://www.youtube.com/VBlogMag My VBlogMag Amazon Store: http://astore.amazon.com/vblogmag-20 ----------------------------------------------------------------------- In this review I demonstrate the operation of the HP 3457A. I highlight some specifications to be aware of when purchasing equipment like this and use the Fluke 8846A as an example. I also provide some tips if you considering buying one of these from eBay. The eBay shop where I purchased mine: http://stores.ebay.com/aaaequipmentre... HP 3457A manual: http://cp.literature.agilent.com/litw... HP 3457A has seven functions with 3 1/2 to 6 1/2 digits of resolution extendable to 7 1/2 digits at reading rates from 1 reading every 2 seconds to 1350 rds/s and basic DC volts accuracy as good as 5 ppm. In addition, the input of the 3457A can be expanded up to ten channels with either of the optional plug-in multiplexer assemblies. On the bench, the front panel operation is extremely flexible and comprehensive. In systems, the Hewlett-Packard Interface Bus (HP-IB) is standard. Powerful Measurement Management The 3457A combines superb analog measuring capability with equally powerful measurement management. More than 1000 readings or whole measurement sequences can be stored in the 3457A for convenient and fast measurement throughput. The present dmm setup can be stored in the non-volatile state memory for convenient reconfiguration of the dmm. Additional power from math functions can be obtained by using PASS/FAIL limit testing, NULL, SCALE, THERMISTOR linearization, and others. The power of total electronic calibration, including AC volts, makes it easy to maintain instrument performance. System Features Keeping with HP's long tradition of systems oriented digital multimeters, the 3457A has all the systems features you've come to expect plus more to make interfacing to your computer even easier - features like flexible formatting of ASCII, 16 bit binary, or 32 bit binary data and buffer memory so that you can take measurements with the 3457A at its highest speed. In addition, you'll find the VOLTMETER COMPLETE output and EXTERNAL TRIGGER input signals ideal for synchronizing other instrumentation with the 3457A. Finally, programmable front-rear terminal switching lets you measure two separate inputs without a scanner. Hewlett-Packard Multimeter Language (HPML) Another first for the 3457A DMM is an easy-to-use dmm language-HPML. Designed so that software written for today's multimeter will fit tomorrow's, HPML only asks you to define the parameters necessary to accomplish your measurement. For example, if you want to make a measurement on a 9 volt DC signal with .01% resolution, the command sequence is "DCV, 9, .01". Control Interface Intermediate Language (CIIL) Option With Option 700, the 3457A responds to standardized DMM CIIL commands via HP-IB. Physically and functionally identical to the standard 3457A, Option 700 adds the CIIL command set with a built-in Test Module Adapter (TMA) to the DMMs standard HPML. The 3457A is further enhanced by adding the functions of AC and DC current through CIIL through HP-IB. Three Rear Panel Plug-In Options Either one of three different optional assemblies may be used with the 3457A for different measurement capabilities. Using the multiplexer assemblies with enable up to ten signal channels to be scanned either sequentially or randomly. All of the functional capability offered through the normal front and rear input terminals is available for multiple inputs. Using the high voltage assembly allows single channel measurement of either AC or DC voltages at the rear panel. For measurement flexibility, the 44491A Armature Relay Multiplexer Assembly offers eight two-wire channels and two current/actuator channels. Under software control, the eight two-wire channels can be reconfigured to four 4-wire ohm channels. The two current channels offer automatic make-before-break switching so that the path for current as high as 1.5 A is never broken. In addition, these two channels can be used as external device actuator channels. Each channel can switch up to 150V. The general purpose multiplexer can close a channel and make a measurement at a maximum rate of 33 channels per second.

Multimeter Review / buyers guide: Part 1 - HP 3457A 6.5 / 7.5 digit precision bench multimeter - YouTube
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