TSP #250 - Tektronix TriMode Active 10GHz (TDP7000) Probe/Tips Review, Teardown & Experiments
13.3K views
October 12, 2024 6:00 PM
In this episode Shahriar takes a close look at the TDP7000 Series TriMode Probe and accompanying active probe tips.
https://www.tek.com/en/datasheet/trimode(tm)-probe-family-1
The review is organized as follows:
00:00 – Introductions
01:23 – TriMode principle of operation
02:37 – Using the 2.92mm/SMA 50-Ohm probe tip adapter, single-ended, differential, common-mode measurements
10:39 – Solder-in flexible probe tip, measurements of a PCI-E 2.5Gbps data stream, eye diagrams, jitter analysis
20:22 – Differential browser use-case, in-circuit synthesizer measurements, frequency domain analysis
25:47 – Detailed look at the flexible, solder-in probe tip, front-end design, integrated circuit reverse engineering
35:58 – Concluding remarks
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TNP #51 - Thorlabs PM320E Dual Channel Optical Power & Energy Meter Teardown, Repair & Experiments
11.5K views
September 15, 2024 8:29 PM
In this episode Shahriar takes a look at faulty Thorlabs optical power meter which has been scored from eBay at a very low price. The listing shows the screen with a white background without any text. Upon close inspection however, it is clear that the screen contrast is the problem. The fault is traced to a basic voltage setting problem (230V versus 115V) which was causing the +/-15V supplies to be significantly under biased.
With the screen issue resolved, the unit is paired with two C-series optical detectors. Various laser power measurements & experiments demonstrate the full functionality of the unit.
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TSP #249 - Rohde & Schwarz MXO-5, 2-GHz, 8-Channel, 12-Bit Oscilloscope Teardown & Trigger Zone Exp.
23.8K views
August 23, 2024 9:56 PM
In this episode Shahriar takes a look at the Rohde & Schwarz MXO-5 Series, their first 8-Channel oscilloscope:
https://www.rohde-schwarz.com/us/products/test-and-measurement/oscilloscopes/rs-mxo-5-oscilloscope_334228.html
The instrument sports some of the best noise, linearity and acquisition speeds in the industry. With R&S custom ASICs, the instrument provides hardware accelerated time & frequency domain measurements (FFTs) as well as a unique Zone Triggering mechanic. This video focuses on the teardown of the acquisition board as well as several demos of the Zone Triggering feature.
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TNP #50 - Associated Research 5000VAC/6000VDC HypotUltra 7854 Dielectric Analyzer Teardown & Repair
11.3K views
July 27, 2024 7:35 PM
In this episode Shahriar takes a look at another eBay purchase. The Associated Research Model 7854 Dielectric Analyzer was sold as a broken item. However, it was missing the critical high voltage PCB all together. Luckily, IKONIX America sells individual boards making the repair possible:
https://www.arisafety.com/model-7854.html
After the board replacement, the unit is up and running! AC, DC and GND tests are verified to be accurate and functional. A 1000V capacitor is pushed to failure point and the dielectric breakdown is verified by unraveling the capacitor layer by layer.
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TNP #49 - Keysight 34420A 7.5 Digit Nano Volt / Micro Ohm Meter Teardown, Repair & Verification
13.2K views
July 25, 2024 11:00 AM
In this quick episode Shahriar repairs an HP 34420A. This 7.5 Digit meter is specialized for making low voltage & low resistance measurements. In 4W mode, it can provide excellent resistance measurements in the micro-Ohm range.
This unit does not make any measurements on Channel 1 while Channel 2 reports the correct readings. An overview of the front-end schematics points to the likely culprit: the solid-state relays responsible for channel switching. After replacing the components the instruments returns to normal. Despite its age and the this repair, voltage and resistance measurements are remarkably close to their ideal values as compared with voltage & resistance calibrator instruments.
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