Buying an Oscilloscope

If your need is to repair, design or to manufacture electronic equipment, then the oscilloscope is a necessary piece of equipment. For those that do not know how to use an oscilloscope, it is a device or a scope that creates a visible two dimensional graph of one or more electrical potential differences. These uses of oscilloscope measurements allow engineers to effectively measure and then manage electrical output. Consider the oscilloscope to be a camera that doesn't take photos but captures signal images that can then be looked at and interpreted.
There are several things to consider when it comes to the purchase of an oscilloscope though. For many individuals, these products will indefinitely alter their ability to perform accurately so it is important that the proper, most accurate devices be used to do so. So, when it comes to oscilloscopes, you?ll want to consider the following elements:
Bandwidth
Rise Time
Sample rate
Waveform Capture Rate
Record Length
Vertical Sensitivity
Sweep Speed
Gain Accuracy
Triggering Capabilities
Effective Bits
Horizontal Accuracy
Resolution
Frequency Response
The comparison of these elements in the oscilloscope will mean several things. First, the more advanced the technology, the more accurate, easy to use and the more reliable the usb oscilloscope device will be. These features each have various abilities and they each can make a significant difference in the quality of information that is provided. Yet, we do have to consider that the oscilloscope has several very high tech features which can make digital storage oscilloscopes expensive. Lesser expensive options are available in used oscilloscope but the proper balance of features and price will undoubtedly deliver the best possible product for you.
According to the research firm Frost & Sullivan, the estimated size of the North American used test and measurement equipment market was $446.4 million in 2004 and is estimated to grow to $654.5 million by 2011. For over 50 years, companies and governments have procured used test and measurement instruments in order to realize a number of benefits including the need to:
- reduce equipment acquisition costs,
- replace discontinued testing instruments,
- circumvent lengthy new product delivery times, and
- conform to legacy standards and specifications.
Although there are many considerations when purchasing used test and measurement instruments, the quality of the instrument and reliability of the vendor should be at the top of the list. Used test equipment pc based oscilloscope vendors deploy a number of bywords that represent the equipment they sell, including "refurbished", "remarketed", "reconditioned", "rebuilt" and, the obvious, "used".
"Used" or "Remarketed" equipment often describes products sold with an "as-is" supposition. You might purchase used tektronix equipment from an end-user organization or auction company that is selling surplus assets. Products sold as "used" should be priced at the lower scale of the market spectrum and it is not uncommon for quality issues to arise with "used" equipment. It is likely that the instruments have not been tested and have an uncertain history. It is only prudent to purchase "Used" equipment if you have the in-house repair and calibration facilities/expertise and are able to procure the item at a cost low enough that the added expense of repair and calibration remains to be a positive, economical outcome.
"Refurbished and Reconditioned" are akin and are the most common presentment of used equipment from equipment dealers. Refurbished equipment is fully tested and calibrated to NIST standards to assure that they meet the original manufacturers' specifications. Refurbished equipment should come with all standard accessories and operating manuals. Malfunctioning internal components will have been replaced or repaired and the product will have been cosmetically cared for including painting and the replacing of face plates, button and knobs. Refurbished equipment is typically sold with a 30-90 day parts/labor warranty and is priced in the middle to high-end of the market spectrum.
Finally, some vendors advertised "Rebuilt" test equipment. Many instrument options are field-installable and can be built-to-order according to the customer's requirements. Some products can even be converted from one generation or version to the next by adding various components. There is absolutely nothing wrong with purchasing rebuilt equipment and, in fact, if you can not find the exact product configuration you are sourcing, you should ask qualified vendors about the possibility adding those options. As with used and refurbished equipment, always exercise caution in choosing a vendor. Assure that the vendor is qualified or uses a qualified electronics laboratory to repair, calibrate and rebuild the products you seek.
Purchasing used, refurbished or rebuilt electronic test equipment is a great way for organizations to save 30-70% on their asset acquisition costs. Warranties and guarantees from used test equipment vendors are formidable. In select product groups, the original equipment manufacturers offer extended warranties in partnership with the vendors that are the selling those products.
Oscilloscope demo
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Hand Held 2MHz Personal Scope Sale Price: $174.00 |
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Weve all seen different models of portable scopes, meters, and scope/meters. Weve also seen the price tag! Unless you were a field tech with a good sized test equipment budget, they were out of the question... |
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USB 2 Channel PC Oscilloscope Sale Price: $369.95 |
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This versatile and powerful 'scope harnesses the power of your pc or laptop to drive its software, eliminating the need for bulky stand-alone oscilloscopes, analyzers, and transient recorders! Just attach it to your laptop for easy troubleshooting readings in the field, or set it up on your workbench at home or the office... |
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TWO Oscilloscope clip probes 100MHZ T5100 for Tektronix HP ; X1, X10, 2 Units + Accessories Sale Price: $27.95 |
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General Features: - Attenuation: X1 ; X10 ; - Input Resistance: 1M? / 10M? ; - Input Capacitance : * X1: 85pF - 115pF , * X10: 14.5pF - 17.5pF ; - Compensation Range: 15pF - 35pF ; - System Bandwidth : * X1: DC - 6MHz , * X10: DC - 100MHz ; - Maximum Working Input Voltage: * X1: |
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Velleman HPS40 - 12MHz Personal Scope 40MS/s Sale Price: $238.00 |
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Both novices and professional users will admire the fast and fully automatic setup function, allowing them to perform measurements without physically touching the unit. Low noise, high sensitivity, modest weight, a backlit LCD and a choice between regular batteries or rechargeable ones make this unit indispensable. |
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5mhz Dual Channel Multiscope - Oscilloscope and Autoranging True RMS Digital Multimeter Sale Price: $499.99 |
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Internal or External Triggering Auto or Manual setup for horizontal and vertical scaling Single shot mode Window freeze locks waveform in the display Roll Mode for slow repetition waveforms Store and Recall up to 16 waveforms and setups Sampling Time: 25MS/s Dual Channel; 50MS/s Single Channel 132 x 128 Pixel Super-Twist two level backlit display Data Hold and Low Battery indication MultiMeter functions include AC/DC Voltage, Resistance, Continuity, Frequency, RPM, Pulse Width, and % Duty Cycle USB Interface and software for transferring waveforms and data |
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200mhz Digital Osilloscope - 4 Channel ,1gs/s. With Rs-232, USB List Price: $2,020.00 Sale Price: $1,830.00 |
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200MHz bandwidth 4 channels, 1GS/s Real-Time and 25GS/s equivalent-Time Sampling, 25K point record length for analyzing complex signals, Large 5.6-in Ultra-bright TFT Color Wide-angle viewable area, 8 X 12 Division display, Three USB ports and one RS232 (standard)... |
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MASTECH VARIABLE DC POWER SUPPLY 0-18V 0-3A List Price: $65.00 Sale Price: $64.00 |
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For sale is a brand new, professional DC regulated power supply from Mastech, Model number HY1803D. This is a highly stable, high quality linear power supply with its output continuously adjustable at 0-18V DC and 0-3A... |
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Fluke 125 Portable Oscilloscope Scopemeter MultiMeter Meter Tester Test Equipment List Price: $1,990.00 Sale Price: $2,040.00 |
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Fluke 125 is the preferred ScopeMeter for the maintenance engineer who works with industrial machinery and the industrial network connecting his machinery. Industrial manufacturing processes and plant control are connected through a digital network... |
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Fluke 199B/S 199 B/S 200MHZ Portable Oscilloscope Scopemeter MultiMeter Meter Tester Test Equipment List Price: $3,697.00 Sale Price: $3,950.00 |
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The Fluke 199B 199 B 200MHZ Portable Oscilloscope Scopemeter delivers analysis power, speed, and performance. 199B 199 B 200MHZ Portable Oscilloscope Scopemeter Includes BC190 Battery Charger/Line Voltage adapter BP190 NiMH Battery Pack Getting started booklet CD-ROM Users manual TL75 Hard Point Test Lead Set VPS210-G Voltage Probe (200 MHz, 10:1), Grey VPS210-R Voltage Probe (200 MHz, 10:1), Red 199B 199 B 200MHZ Portable Oscilloscope Scopemeter Features Monochrome Display Dual input 200 MHz bandwidth Up to 2... |
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Compare
Compare
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Tektronix 485 350MHz 2CH Oscilloscope, Rack, Parts Unit $39.99 |
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TEKTRONIX 475A OSCILLOSCOPE $66.00 |
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Tektronix 434 Storage Oscilloscope $99.99 |
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Tektronix 500MHz Oscilloscope Probe P6139A $39.99 |
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Tektronix Tek 2440 Oscilloscope Programmers Manual $45.00 |
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Tektronix 485 Oscilloscope $113.64 |
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Ballantine 1042A Oscilloscope Instruction Manual $25.00 |
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Tektronix 466 2CH 100MHz Storage Oscilloscope DM 43 $34.99 |
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Tektronix 2225 50 MHz Dual/2 Channel Oscilloscope $219.99 |
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NEW 100MHZ OSCILLOSCOPE CLIP PROBES+FREE ACCESSORY PACK $15.99 |
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Two Oscilloscope Scope Clip Probe 100MHz Tektronix HP $5.00 |
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Fluke PM3394B 200MHz Combiscope Oscilloscope $500.00 |
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Tektronix 7854 Oscilloscope with Accessories #6301 $100.00 |
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Tektronix 7623B 100 Mhz Mainframe Oscilloscope $10.50 |
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Tektronix 465M AN/USM-425 D 100Mhz Oscilloscope $67.09 |
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HP 54120B Digitizing Oscilloscope Mainframe $40.00 |
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Tektronix 213 DMM Oscilloscope $32.28 |
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Two Oscilloscope Scope Clip Probe 100MHz Tektronix HP $4.25 |
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Tektronix 465B Oscilloscope Dual Channel 100MHz $99.99 |
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Tektronix 7934 Storage Oscilloscope w/ Plug Ins #10504 $49.99 |
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2000VDC Max. x100 100 MHz OSCILLOSCOPE CLIP PROBE KIT $27.99 |
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Tektronix 212 Oscilloscope Service Manual $11.95 |
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Tektronix TAS 475 Oscilloscope 100 MHz 4 Channel $899.95 |
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Two Oscilloscope Scope Clip Probe 100MHz Tektronix HP $4.99 |
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Two Oscilloscope Scope Clip Probe 100MHz Tektronix HP $3.96 |
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Tektronix 323 Oscilloscope Operating & Service Manual $7.00 |
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Oscilloscope Probe Model 3901-2 1x/10x 100MHz Fixed Tip $24.99 |
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Tek 2215 Oscilloscope Operating & Service Manuals 2-vol $7.00 |
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Tektronix TDS 620A TDS620A oscilloscope, NIST-certified $1,995.00 |
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Tektronix TDS 220 TDS220 oscilloscope, $785.00 |
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TEKTRONIX C-5C OSCILLOSCOPE CAMERA $49.99 |
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KIKUSUI COS6100A 100MHz OSCILLOSCOPE USED SOLD AS IS $99.95 |
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Two Oscilloscope Scope Clip Probe 100MHz Tektronix HP $3.96 |
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50 ohm BNC Test Leads Cable Oscilloscope w/ Clip $7.28 |
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HP Agilent 54501A 100 MHz Digitizing Oscilloscope $200.00 |
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“Are you looking for a spectrum analyzer that is just limited to frequencies below 20 Hz? If so, do you want something like a 1 Hz resolution? There would be a little more than 1 second of delay for this implementation.
As the software is written now, the bins are spaced about 19 Hz apart from one another. Finer resolution would require more samples which would, in turn, cause a noticeable delay between the input and what is seen on the LCD.”
BrianNelson123
2 Feb 10 at 8:08 pm