Dave explains a big trap in high frequency measurement with your oscilloscope. Based on a viewer request, Dave demonstrates how to incorrectly and then correctly measure the signal output level over frequency of your function generator using your oscilloscope. Some whiteboard transmission line theory is thrown in as well.
EEVblog #652 – Oscilloscope & Function Generator Measurement Trap - [Link]
In a recent press release the Saelig Company Inc have announced that they will be distributing a new 100MHz four-channel benchtop oscilloscope from Owon. The Far-Eastern manufacturers have been building a reputation for quality, low-cost test equipment and the new TDS7102 has a similar spec to the existing four-channel SDS7102 but with the added convenience of a touch-screen user interface.
The scope features 1GSa/s signal capturing on all four channels simultaneously with a 7.6MSa record length and 50,000 wfmSa/s capture rate. The touchscreen makes it more convenient to position and display waveforms and the scope retains control knobs and buttons for conventional operation.
100 MHz Touch-screen Scope from Owon - [Link]
by prem_ranjan @ open-electronics.org:
We have designed an Oscilloscope using PC and Arduino Board. The signal is first of all fed to the Arduino Board where the analog signal is converted to a digital signal by the ADC which is then serially outputted to the PC and is read by the MATLAB software via the COM ports. Here the signal is read in the form of digital data but then is converted to analog one by using the resolution of the ADC used by the Arduino Board. The MATLAB software was then used to plot the signals.
A PC and an Arduino: here’s your DIY Oscilloscope - [Link]
An all-in-one breadboard with Oscilloscope, Spectral Display, Function Generator, and Power Supply.
We are excited to bring a low-cost audio range electronics development board to classrooms, labs, small businesses, and techno-geeks everywhere. This idea has been bouncing around in our family for many years and now the technology has caught up to make it a reality at a price that schools and individuals can afford. We have paired a traditional prototype board (or breadboard) with an electronics suite so that the experimenter does not have to purchase the expensive electronics test equipment needed during development. It is everything we wish we had when we were learning about circuits on a breadboard.
Bakerboard: The Educational Breadboard with More - [Link]
In this episode of “The Ben Heck Show” Ben takes a look on some problems that can be solved using high end oscilloscopes. First he will try to determinate the dot clock frequency of a LED display he created, secondly he will take a look on the I2C EEPROM write Timing and finally he will use the logic analyzer on the oscilloscope to take a look on the entire address bus of a game console and will try to capture the reset vector. To achieve all that he takes a road trip to Madison Area Technical College to visit their electronics lab and get his hands on the high end oscilloscopes they have.
The dot clock frequency he will try to measure is how fast the pixels (dots) of the Vishay LED Display Module LEE128G032B are updated. To measure that he hooks the oscilloscope probe to data clock PIN. The scope he uses is an Agilent oscilloscope MSO7012B . This scope is a 100Mhz Mixed Signal Oscilloscope with two analog inputs and 16 digital channels and is equipped with a 12.1” XGA display. It has a very fast update rate of up to 100k waveforms per second and thus enables us to capture details and infrequent details that other scope miss. It also has Standard 8 Mpts MegaZoom III deep memory and Automatic Search and Navigate function.
On the next example he is doing a I2C EEPROM analysis (I2C is a serial bus that enables us to connect up to 128 devices using only two lines, data and clock, but it can be a little slow) by writing 4 bytes of data to the EEPROM. He captures the data being written to the EEPROM and analyzes them.
On the third and final example he uses the Agilent oscilloscope MSOX3012A logic analyzer function to analyze an ATARI address bus and capture the reset vector . A reset vector is the position in memory that a CPU starts to execute code. There can be a reset vector for the reset button and another for “cold boot”. To capture the signal the scope is set to digital mode and a logic analyzer probe is attached. The MSOX3012A is a 100 MHz, 2 Analog Plus 16 Digital Channels oscilloscope with 8.5-inch WVGA display, 1M waveforms per second and 4 Mpts memory.
If you would like to know more information about the mentioned products above or other high-end oscilloscopes visit Newark US or Newark Canada. Also you can Win a Tektronix TBS1202B-EDU Oscilloscope, plus T-Shirts! on this contest giveaway or win other great stuff here.
The Ben Heck Show – Take a Look Inside with Oscilloscopes - [Link]
The filter shape of an HF bandpass filter that is designed for the 30m amateur radio band (10MHz) is measured using a Tektronix MDO3000 mixed domain oscilloscope. The arbitrary function generator (AFG) is used to generate a noise waveform that is flat across the HF spectrum, and the filter shape is then shown on the spectrum analyzer. The filter being measured is the front end bandpass filter of a Softrock Lite II SDR receiver kit.
How to measure an HF Bandpass filter response with the MDO3000 - [Link]
This is the portable version of the Xminilab. The Xminilab Portable is a small mixed signal oscilloscope with an arbitrary waveform generator and protocol sniffer.
- Mixed Signal Oscilloscope: Simultaneous sampling of analog and digital signals
- Advanced Trigger: Normal / Single / Auto, with rising or falling edge and adjustable trigger level
- Meter Mode: Average, Peak to peak and Frequency readout
- XY Mode: Plot Lissajous patterns, See the phase difference between two waveforms
- Spectrum Analyzer with different windowing options and selectable vertical log
- Horizontal and Vertical Cursors with automatic waveform measurements
- Arbitrary Waveform Generator with Sweep on all parameters
- Display options: Persistence, Different grid options, and more
- Curve tracer function
Xminilab Portable Small Mixed Signal Oscilloscope 2.42″ OLED - [Link]
The HMO1002 digital oscilloscope from Rohde & Schwarz is a quality test and measurement device representing good value for money. Three models offer bandwidths of 50, 70 and 100 MHz and an optional eight-channel logic probe allows full use of the scope’s MSO capabilities. Among the stand-out features of the scope include its fast displayed waveform update rate and high vertical-input sensitivity.
The fan-less design offers a 1 GSample/s sample rate and a memory depth of 1 MSample. Additional built-in features make it an ideal diagnostic and teaching tool for a wide range of applications for students, service technicians and for developers of embedded systems. The three digit DVM function simplifies the service technician’s work, cuts down on work bench clutter and gives the HMO1002 the ability to make simultaneous voltage measurement on two analog channels.
Its function generator is particularly useful in educational environments, producing a range of different waveforms at frequencies up to 50 kHz. Pupils, trainees and students will find it useful to solve a variety of measurement tasks. An integrated pattern generator makes it easy for developers of embedded systems to configure and generate protocol telegrams at speeds up to 50 Mbit/s. This gives developers the freedom to program customized waveforms together with the supported predefined serial communication protocols. Integrated in the HMO1002 is an optional hardware-accelerated serial bus signal trigger and decoder with support for some of the most popular communication protocols (I2C, SPI, UART, CAN or LIN).
New DSO from Rohde & Schwarz - [Link]
A quick look at the new Siglent SDS2072 super phosphor digital oscilloscope.
A quick look at the bench power supply project and a component list.
T4D #100 – SIGLENT SDS2000 and Power Supply Project - [Link]