In this episode Shahriar review the new sampling oscilloscope from SJL Instruments. Our GigaWave™ digital sampling oscilloscopes offer 12-bit vertical resolution, 1-ps time resolution, and 6 GHz analog bandwidth, all in a tiny 4” form factor: https://www.sjl-instruments.com/ This review is organized as follows: 00:00 - Introductions 00:34 - Sampling scope & real-time scope theory and comparison 04:13 - CDF versus PDF method of waveform reconstruction 06:12 - Teardown & circuit analysis 09:35 - Input return loss characteristics and channel isolation 10:36 - GUI overview, capturing a fast pulse, comparison with Keysight DCA-X, built-in measurements, dot and vector mode 19:09 - Eye diagram measurements, ISI measurements, multi-channel view 24:15 - Multi-tone capture, FFT functions 25:09 - Concluding remarks Please consider supporting The Signal Path: https://www.TheSignalPath.com/Donate https://www.Patreon.com/TheSignalPath Other links: https://www.TheSignalPath.com https://www.Twitter.com/TheSignalPath ... https://www.youtube.com/watch?v=1Iq485qzYgI

In this episode Shahriar takes a look at a pair of COVID-19 electronic home kits. These Bluetooth enables devices are manufactured by ellume. Both of these tests had produced false-positive results. The optical readout mechanism of the devices are examined as well as the general design of the unit. This video is not about which COVID-19 home test kit you should purchase. This is an exploration and analysis of this particular device for educational purposes only. For all medical advice regarding COVID-19, please contact your doctor. ... https://www.youtube.com/watch?v=UvArprBmdFA

In this episode (Part 4/6) Shahriar reviews the brand new Rigol DP1116A and DP1308A programmable power supplies. Furthermore, the power supply features are compared against an Agilent dual output power supply. "DP1308A & DP1116A are high-performance programmable linear DC power supply. They have excellent features including timed outputs and tracking capabilities; extremely clean ripple and noise, comprehensive over-voltage, over current, over-temperature protection, a large and clear user interface, super performance specifications,and multiple standard interfaces. The DP1308A & DP1116A meet the requirements of various forms desktop and integrated system testing. DP1308A & DP1116A are widely used in research and development, education, industrial control, mobile communication, and product testing, etc." The MSRP for both products is $849. Rigol offers a 30 day no-questions-asked return policy and a 3 year warranty. They also provide an excellent local technical support out of tropical Cleveland, Ohio. ... https://www.youtube.com/watch?v=L1M29SOLXm4

In this episode Shahriar performs a full review on the Tektronix MDO4000C series mixed domain oscilloscope, particularly model MDO4104C-6. The MDO4000C combines up to six instruments including a function generator and a built-in spectrum analyzer. Unlike any other instrument, it can synchronize RF, analog and digital channels. These correlated measurements provide insight into difficult to find problems particularly intermittent events. This review begins with a comparison between the MDO4000B and MDO4000C instruments. The full review of the MDO4000B can be viewed here (http://youtu.be/gyzwS5Ozb7U). All experiments demonstrated in the MDO4000B review are also relevant to the MDO4000C instrument. The teardown of the instrument reveals a multi-board construction where the ADCs, FPGAs, application processor and memory are on the main system board. A complete analysis of the entire system is presented including the operation of the RF module. In order to demonstrate the instrument’s capabilities, an encrypted frequency hopping transmitter system is analyzed. The system exhibits various problems such as high BER, low SFDR, poor phase-noise and EVM. The MDO4000C is used to perform advanced measurements across analog, digital and RF domain to track and resolve these problem. The complete block diagram of the experiment can be found on the signal path website. The Signal Path www.TheSignalPath.com www.YouTube.com/TheSignalPath www.Patreon.com/TheSignalPath ... https://www.youtube.com/watch?v=po_WLLFr-w4