Category Archives: The Signal Path

TSP #14 – Cryogenic Experiments on Passive and Active Electronic Components

In this episode, Shahriar investigates the theory and experimental results of the impact of extreme low temperatures on passive and active components. Liquid Nitrogen in used in a transparent glass Dewar where different components can be fully submerged in the liquid. Various types of resistors are compared for their Continue reading TSP #14 – Cryogenic Experiments on Passive and Active Electronic Components

TSP #13 – Teardown and Operation of an Advantest TQ8325 Wavelength Meter

In this episode Shahriar presents the teardown of an Advantest TQ8325 Wavelength Meter. The principle operation of the instrument is explained along with a close up of the free space optics in operation. To verify the functionality of the unit, an infrared laser module is used as a CW coherent Continue reading TSP #13 – Teardown and Operation of an Advantest TQ8325 Wavelength Meter

TSP #12 – Rigol DM3068 6.5 Digit Digital Multimeter Review

In this episode, Shahriar reviews the Rigol DM3068 6.5 Digit Digital Multimeter. The Model DM3068 DMM gives reliable, cost effective, full DMM capabilities measuring DCV, ACV, DCI, ACI, Resistance (2 & 4 Wire), Capacitance, Diode Test, Frequency, and Temperature. These DMMs are designed for simple and efficient bench top use, Continue reading TSP #12 – Rigol DM3068 6.5 Digit Digital Multimeter Review

TSP #11 – Teardown & Repair of an Agilent E3634A 50V 200W Power Supply

In this episode Shahriar investigates the cause of failure of an E3634A DC Power Supply. The video features a step by step troubleshooting and teardown of the damaged power supply. Various schematics and block diagram of the power supply are presented. Will he be able to fix it?

The Signal Path
Continue reading TSP #11 – Teardown & Repair of an Agilent E3634A 50V 200W Power Supply

TSP #10 – Tutorial on Waveform Shaping and Signal Constellation in an Optical Link

In this episode Shahriar uses a few components to beyond what there were originally intended for in order to setup an optical link! By using a BlinkM RGB LED, a Color Sensor, and two PIC USB Boards from Sparkfun Electronics, a stand-alone optical link is established. Various theories of operation, Continue reading TSP #10 – Tutorial on Waveform Shaping and Signal Constellation in an Optical Link

TSP #9 – Tutorial on Passive Filters, Data Transmission and Equalization

In this episode Shahriar explores the world of filters! Starting from a simple lumped RC filter, he briefly covers the theory before moving onto measurement techniques. The bandwidth of the filter is verified experimentally in the time domain. A more complex RLC band-stop filter is also demonstrated with a tune-able Continue reading TSP #9 – Tutorial on Passive Filters, Data Transmission and Equalization

TSP #8 – Tutorial on Linear and Non-linear Circuits

In this episode Shahriar investigates the impact of linearity and distortion on analog circuits. The source of a non-linear input/output characteristic is presented in three different domains: mathematical, time domain and frequency domain. After the theoretical discussion, a sample circuit is built and tested to illustrate real time signal distortion. Continue reading TSP #8 – Tutorial on Linear and Non-linear Circuits

TSP #7 – 9-DoF AHRS Sensor Board and RGB LED Matrix Demo

In this (experimental) episode Shahriar demonstrates two embedded-electronic circuits available for purchase from Sparkfun Electronics. The demos illustrate some of the capabilities of these circuits along with a short instruction on how to interface and operate them. All the code for the AHRS demo and the RGB Matrix demo are Continue reading TSP #7 – 9-DoF AHRS Sensor Board and RGB LED Matrix Demo

TSP #6 – Rigol DP1116A and DP1308A Programmable Power Supply Review (Part 6/6)

In this episode (Part 6/6) 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; Continue reading TSP #6 – Rigol DP1116A and DP1308A Programmable Power Supply Review (Part 6/6)

TSP #6 – Rigol DP1116A and DP1308A Programmable Power Supply Review (Part 5/6)

In this episode (Part 5/6) 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; Continue reading TSP #6 – Rigol DP1116A and DP1308A Programmable Power Supply Review (Part 5/6)