Digital Oscilloscope
Todays deals on Digital Oscilloscope?
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Tektronix DPO71254B Digital Phosphor Oscilloscope 12.5GHz 4Channel 50GS/s 10MS $69,999.00 |
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Tektronix DSA70404 Real-Time Digital Phosphor Oscilloscope $33,995.00 |
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Tektronix TDS6154C Digital Storage Oscilloscope 15GHz 40Gs/s $30,000.00 |
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Agilent/HP DSO80804B 8GHz 4CH 40GSa/s Oscilloscope with Agilent Cal & Warranty $29,000.00 |
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HP/Agilent DSO80804B Infiniium oscilloscope: 8 GHz $29,000.00 |
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Tektronix TDS6154C 4 Channel, 15GHz, 40 GS/s Digital Oscilloscope – CALIBRATED! $27,990.00 |
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TEKTRONIX TDS7404B Digital Phosphor Oscilloscope $26,250.00 |
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Agilent HP 54846B 4 channels, 2.25 GHz, 8 Gsa/s Infiniium Digital Oscilloscope $25,495.00 |
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YOKOGAWA AQ7750 500GHz Optical Femto Sampling Oscilloscope $24,900.00 |
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Tektronix TDS7704B Digital Phosphor Oscilloscope $24,995.00 |
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Tektronix TDS8200 Digital Oscilloscope $22,495.00 |
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Tektronix TDS6604 Digital Storage Oscilloscope $21,995.00 |
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LECROY Wavemaster 8500A 5GHz Quad Digital Oscilloscope $19,990.00 |
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Tektronix DPO7254 Digital Phosphor Oscilloscopes $19,000.00 |
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Tektronix TDS7704B 7GHz 4CH 20GSa/s Oscilloscope, Opt. STD, Cal. Cert. Included $17,000.00 |
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Tektronix CSA7404 4.0 GHz 4CH Digital Phosphor Scope $17,000.00 |
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Tektronix TDS7254B Digital Phosphor Oscilloscope $17,000.00 |
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Lecroy WavePro 7100 w/ Options XL/DDM2/XMAP, 4 Ch 1GHz DSO Digital Oscilloscope $16,250.00 |
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Tektronix Digital Oscilloscope TDS7254, Cal/CERT, ROR $15,500.00 |
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HP/Agilent 54833A Infiniium Oscilloscope: 2 Channels $15,000.00 |
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Agilent DSO80304B 3GHz 4CH 40GSa/s Infiniium Oscilloscope $14,500.00 |
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TEKTRONIX TDS7154B 1.5GHZ DIGITAL PHOSPHOR OSCILLOSCOPE $14,495.00 |
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LECROY WaveRunner 204Xi 4 Channel, 2 GHz, 10 GS/s Oscilloscope – CALIBRATED! $13,950.00 |
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TEKTRONIX TDS7154 Digital Phosphor Oscilloscope $13,995.00 |
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Tektronix TDS7404 DPO Digital Phosphor Oscilloscope 4GHz 20GS/s OPTION 4M $13,500.00 |
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TDS7404 Tektonix Digital Oscilloscope, Cal/CERT, ROR $13,750.00 |
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Tektronix TDS5054B Digital Phosphor Oscilloscope $13,495.00 |
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Tektronix TDS7104 Digital Oscilloscope $13,395.00 |
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LECROY SDA-5000A SERIAL DATA ANALYZER/OSCILLOSCOPE $12,950.00 |
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Tektronix DPO4104 Digital Phosphor Oscilloscope, 1 GHz, 4 Ch., 5 GS/s $12,850.00 |
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Tektronix TDS5104 DPO Digital Phosphor Oscilloscope 1GHz 5GS/s OPTIONS 2M 2A $12,500.00 |
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Tektronix DPO7054 Digital Phosphor Oscilloscope $12,495.00 |
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AGILENT 54846A INFINIIIUM OSCILLOSCOPE – ON SALE!!! $12,400.00 |
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Tektronix TDS7254B Digital Phosphor Oscilloscope w/ Probes, Manuals Software !!K $12,399.95 |
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LeCroy WavePro 7000 1GHz Oscilloscope $12,000.00 |
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Tektronix TDS7154B Digital Phosphor Oscilloscope, 1.5 GHz, STD Opt. w/ Cal. Cert $12,000.00 |
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Tektronix TDS8000B Digital Sampling Oscilloscope $12,000.00 |
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Agilent HP 54835A Infiniium Digital Oscilloscope $11,195.00 |
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LeCroy LC584AM Digital Oscilloscope $10,495.00 |
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Tektronix TDS680C 1GHz Digital Oscilloscope $10,495.00 |
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TDS7104 Tektonix Digital Oscilloscope – Free USA ship* $10,450.00 |
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Agilent HP DSO6054A 500 MHz 4 Channel Digital Storage Oscilloscope $10,395.00 |
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Tektronix TDS5104 Digital Phosphor Oscilloscope Jitter Analysis 4Ch 5 GS/s NEW $9,999.99 |
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Tektronix TDS5054B 4 Channel Digital Phosphor Oscilloscope, 500 MHz $9,995.00 |
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LeCroy WaveRunner 6050A DSO Oscilloscope 500Mhz with probes,Calibrated, Warranty $9,700.00 |
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TEKTRONIX TDS7054 Digital Oscilloscopes $9,750.00 |
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Tektronix TDS8000 Digital Oscilloscope $9,495.00 |
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Agilent 54853A Digital Oscilloscope 4 Ch 2.5 GHz $9,444.00 |
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YOKOGAWA DL7480 DC-500MHz 8ch +16ch 16MW Digital DSO $9,100.00 |
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Agilent HP 54820A 500MHz Digital Oscilloscope $9,395.00 |
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NEW Agilent MSOX3052A 500 MHz Digital Oscilloscope $8,990.00 |
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HP/Agilent 54845A Infiniium Oscilloscope: 4 Channels $9,000.00 |
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TEKTRONIX TDS6604 DIGITAL STORAGE OSCILLOSCOPE 4CH 6GHz 20GS/s $9,000.00 |
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Agilent CertiPrime MSO8104A Infiniium Mixed Signal Oscilloscope $8,999.00 |
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Agilent MSO6104A Mixed Signal Oscilloscope $8,999.00 |
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TEKTRONIX TDS784D DIGITAL OSCILLOSCOPE $8,995.00 |
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TEKTRONIX TDS7054 DPO OSCILLOSCOPE 5GS/s WinXP TDSET3 Ethernet Compliance RoR $8,975.00 |
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Tektronix TDS820 6GHz Digital Oscilloscope $8,895.00 |
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TEKTRONIX TDS694C DIGITAL OSCILLOSCOPE $8,895.00 |
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Tektronix TDS644B Digital Oscilloscope $8,895.00 |
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TEKTRONIX TDS3054B DIGITAL PHOSPHOR OSCILLOSCOPE $8,595.00 |
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Agilent 86100A Infiniium DCA Wide Bandwidth Oscilloscope Mainframe w/ Option 001 $8,500.00 |
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Tektronix TDS5054 500MHz 5GS/s 4-Channel Digital Phosphor Oscilloscope $8,500.00 |
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Agilent 54853A 2.5GHz 4CH 20GSa/s Infiniium Oscilloscope $8,500.00 |
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LeCroy LC584AL Digital Oscilloscope $8,495.00 |
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Tektronix TDS784C Digital Oscilloscope $8,495.00 |
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HP/Agilent 54845B Infiniium Oscilloscope $8,450.00 |
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Tektronix DPO4104 Digital Oscilloscope 1 GHz Fails CH2 Other 3 channels perfect $8,400.00 |
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TEKTRONIX TDS 5052 DIGITAL PHOSPHOR OSCILLOSCOPE 2 CH $8,244.95 |
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LeCroy LT584L DC-1GHz 4ch 4Gs/s 8MW WaveRunner2 Digital Oscilloscope $7,790.00 |
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Agilent CertiPrime MSO7104A Mixed Signal Oscilloscope $7,999.00 |
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Agilent MSO6104A Mixed Signal Oscilloscope $7,999.00 |
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Tektronix TDS8000B Digital Sampling Oscilloscope $7,667.00 |
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Tektronix TDS544A 500MHz Digital Oscilloscope $7,895.00 |
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Tektronix TDS754A Digital Oscilloscope $7,895.00 |
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Tektronix TDS7054 Digital Phosphor Oscilloscope, w/ 2 P5050, w/ 2 P6139A, Opt 1M $7,500.00 |
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TEKTRONIX TDS 680B 1 GHz DIGITAL OSCILLOSCOPE W/OPTS! $7,500.00 |
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Lecroy LT374M 500 MHz Digital Oscilloscope $7,550.00 |
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Tektronix DPO3054 500MHz 4CH 2.5GSa/s Oscilloscope $7,500.00 |
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HP/Agilent 54832D 4+16-Channel, 1 GHz Oscilloscope $7,500.00 |
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HP/Agilent 54830D 2+16 Channel Infiniium Oscilloscope $7,500.00 |
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HP/Agilent 54831D 4+16 Channel Infiniium Oscilloscope $7,500.00 |
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Tektronix TDS6404 Digital Phosphor Oscilloscope 4GHz 4CH 20GSa/s $7,250.00 |
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Tektronix TDS724D 500MHz Digital Oscilloscope, 2 CH $7,495.00 |
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Tektronix TDS620B Digital Oscilloscope $7,495.00 |
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TEKTRONIX TDS684C DIGITAL OSCILLOSCOPE $7,450.00 |
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Tektronix TDS7404 Digital Oscilloscope, w/ Certificate of Calibration, Opt. 1M $7,250.00 |
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Agilent HP 54121T -Digitizing Oscilloscope 54120B & 54121A Four Channel Test Set $7,250.00 |
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NEW Agilent DSOX3052A 500 MHz Digital Oscilloscope $6,990.00 |
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Agilent/HP 54846A 2.25GHz 4CH 8GSa/s Infiniium Oscilloscope with Cal & Warranty $7,000.00 |
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Agilent DSO7054A Oscilloscope: 500 MHz, 4 channels $6,999.00 |
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Agilent – HP 54845A DIGITAL OSCILLOSCOPE $6,995.00 |
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TEKTRONIX TDS540D DIGITAL OSCILLOSCOPE $6,995.00 |
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TEKTRONIX TDS694C 4CH REAL-TIME COLOR DIGITIZING OSCILLOSCOPE 10GS/s 3GHz P6249 $6,995.00 |
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Tektronix TDS784A 1GHz Digital Oscilloscope $6,900.00 |
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Tektronix TDS784D/13/1/1MF Oscilloscope, 4CH,1GHz, 4GS/s, DPO, Tested OK, ROR $6,900.00 |
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Tektronix TDS724C Digital Oscilloscope $6,895.00 |
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TEKTRONIX TDS8000 DIGITAL SAMPLING OSCILLOSCOPE $6,500.00 |
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Tektronix TDS7054 DPO Digital Phosphor oscilloscope Option STD 19″ Rack Mount $6,499.99 |
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Tektronix 684C Color 4 Channel Real Time Oscilloscope $6,495.00 |
Digital Oscilloscope Questions
How The Digital Oscilloscopes Measure Small Signals
People who know about the principles of digital oscilloscopes can know they are sampling with high speed ADC. In order to ensure get high sampling rate, so the ADC number of digital oscilloscopes is only 8 bit, so the noises of themselves is relatively high. Particularly when we testing the small signals, as the noise of small signals is not much higher than the noise of digital oscilloscopes, therefore, the signal noise ratio (SNR) is very bad. For example, a signal which is common in the communication, the frequency of it is low and the amplitude is small, so the noise of the digital oscilloscope above the signal will lead to the signal displayed unclear, therefore it is not easy card by cursor.
To improve the SNR, the common way we think is to use the function of waveform averaging on digital oscilloscopes Averaging function is through multiple acquisitions, make the number of waveforms superimposed and average the noise, but only for repeatable signals. However, the signal is non-repeatable, make the signal waveforms superimposed then confuse itself, let alone to measure.
There are a lot of non-repeatable small signals need to be measured in practical applications, such as a power pulse, the signals from sensor, the ripple of power supply. As they are non-repeatable signals, so they can not use the function of average to be measured. But how to improve the accuracy of the measurement when measure these signals? The answer is to use the high-resolution mode of the digital oscilloscope.
The high resolution mode, that is to say average adjacent multiple points from a waveform which is collected by digital oscilloscope. We should notice the difference between high-resolution mode and the average mode. Average mode is made the points of the same position which on many waveforms averaged. And high-resolution mode is made the points which are adjacent on the same waveform averaged. Though the essence of high –resolution is average, only one waveform is OK and not need many acquisitions.
By setting the high-resolution mode, we can see the effect of noise which on the digital oscilloscope is eliminated out much, the signals become more clearly, more accurate measurements will be.
However, the high-resolution mode is not omnipotent, the essence of averaging the adjacent sampling points is low pass filter of the signals, so if there are some high frequency components of the signal will be averaged out. From the waveform diagram, when the digital oscilloscope is set to the high-resolution mode, the more points, the more clear signals, but the lower the bandwidth of the digital oscilloscope.
From that, we can see high-resolution mode improves the accuracy of measurement is to sacrifice for the bandwidth of digital oscilloscope. Therefore, high-resolution mode is not for the measurement of the high-frequency signals. The measurements for the high-frequency small signals are depending on the noisy indicators of the measuring instruments.
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