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EEVBlog Interview with Bart about the new CS448
At Electronex in Sydney in September 2018 Dave discussed the latest CS448 oscilloscope with Bart
FRA How to - Save FRA data points to text file
Use the Cleverscope Frequency Response Analyser to measure and then save FRA data points to a text file for analysis with an external program such as Excel or Matlab. We also show how you can use the AddRef to see a family of captured curves.
FRA How to - Filter Response
Use the Cleverscope Frequency Response Analyser to measure the Gain/Phase response of a Minicircuits BBP-30+ bandpass filter. This video shows you how to connect up a CS328A-FRA to measure the Gain/Phase of the Minircircuits filter over the frequency range 1 MHz - 65 MHz.
FRA How to - PSU Gain/Phase
Use the Cleverscope Frequency Response Analyser to measure the Gain/Phase of a power supply. This video shows you how to connect up a CS328A-FRA to measure the Gain/Phase of an LTC3589 over the frequency range 20 Hz - 1 MHz.
FRA How to - Power Supply Rejection Ratio
Use the Cleverscope Frequency Response Analyser to measure the Power Supply Rejection Ratio (PSRR) of a power supply with the CS1070 Power Amplifier. It can manage up to 1A output current over a voltage range of -18V to +30V over a frequency range of DC - 52 MHz. This is sufficient to directly measure many power supplies. If this is not enough, you can inject across a low value series resistor (eg 0.1 ohm). This video shows you how to connect up a CS328A-FRA and CS1070 to measure the PSRR of an LTC3589 over the frequency range 200 Hz - 10 MHz.
FRA How to - Input Impedance
Use the Cleverscope Frequency Response Analyser to measure the input impedance of a power supply with the CS1070 Power Amplifier. It can manage up to 1A output current over a voltage range of -18V to +30V over a frequency range of DC - 52 MHz. This is sufficient to directly measure many power supplies. If this is not enough, you can inject across a low value series resistor (eg 0.1 ohm). This video shows you how to connect up a CS328A-FRA and CS1070 to measure the Input impedance of an LTC3589 over the frequency range 200 Hz - 10 MHz.
FRA How to - Output Impedance
Use the Cleverscope Frequency Response Analyser to measure low impedances (1mOhm - 20 Ohm) including on live Power Supplies. This video shows you how to connect up a CS328A-FRA and measure the Output impedance of an LTC3589 over the frequency range 20 Hz - 1 MHz.
FRA Family of curves
You can use the 'AddRef' persistence command to make a family of curves, and then step around them, and make further measurements as needed. This video shows you how to collect a family of Gain/Phase plots for a TI 5V 2.5A power supply, as the load current is varied from 2.5A to 1A and then 0.5A.
FRA BNC fixture calibration
The FRA BNC Fixture calibration procedure corrects for amplitude, gain and phase errors introduced by a test fixture. In addition we can compensate for the open circuit capacitance of the fixture. This video shows you how to simply calibrate a fixture, and then shows you the results with three 0603 SMT capacitors. You can use the fixture to reliably measure component values up to 65 MHz.
Calibrating BNC cables for FRA use
The FRA BNC cable calibration procedure corrects for amplitude, gain and phase of
the BNC cables and terminations used to measure system frequency response,
impedance or capacitance and inductance. After doing a BNC cable calibration you
will achieve a flat gain/phase response with directly connected BNC cables,
ensuring that the responses you measure are those of your system, and not the
cables and terminations.
Calibrating Probes for FRA use
The FRA probe calibration procedure corrects for amplitude, gain and phase of the probes used to measure system frequency response, impedance or capacitance and inductance. After doing a Probe calibration you will achieve a flat gain/phase response with directly connected probes, ensuring that the responses you measure are those of your system, and not the probes.
Persistence on the Spectrum Display
We have finally added Reference Plots and Persistence to the Spectrum Display. Watch this video to see it in action. Very useful when comparing FRA plots, or checking on stability or occupied bandwidth.
Impedance measurement with FRA
We use the FRA panel to measure the Impedance and Capacitance/Inductance of components such as capacitors, inductors, transformers and PCB's.
Frequency Response Analyser Tour
Cleverscope has made a new FRA control panel to make it easy to use Frequency Response Analysis (FRA) on a Cleverscope. Using the new CS701 isolated signal generator you can measure the power supply system stability, do gain phase plots of feedback loops, amplifiers and filters, and measure the impedance of components. You can also measure mechanical system stability. The CS701 and FRA control work over 0.1 Hz to 65 MHz. This video is a simple tutorial on FRA and how to use a Cleverscope to do it.
Streaming 10 hours to disk
This streaming tour shows Cleverscope streaming more than 38 G Samples to disk at 1 MSPS with 14 bits resolution and ENOB, all the while looking at the signal using Spectrum Analysis, the Tracking Display, Protocol Analysis and Signal Information. We quickly pan and zoom through the more than 10 hours of recorded signal and show save and load from disk for later review. We know of no other oscilloscope that can do this.
CS701 Isolated signal generator
A first look at using the Cleverscope CS701 isolated Signal Generator operating with a very low 200uV rms level. We see 25 dB dynamic range, and flat response. This shows that the CS701 can be used to excite the feedback path in power supplies with a very wide dynamic range - from 200uV to 2V rms, with full 300 V RMS isolation. No need for an isolating transformer, and the current drive need to magnetize it. Simple connect to a small value resistor in the feedback path - anywhere on the power supply to verify gain and phase over a frequency range of 0Hz to 65 Mhz.
Display Docking
With display docking you can move all the Cleverscope windows in one group by moving the Cleverscope Control Panel. You can also minimize and restore as a group by minimizing just the Control Panel. This video shows you how.
Cleverscope Amplitude Axis
The Cleverscope Scope Display sets the amplitude range presented to the Analog to Digital Converter (ADC). You can type values directly onto the axis, use the expand/contract buttons, keyboard shortcuts, or the zoom tools. This video shows you how.
Charting - Streaming to disk
You can use Charting to stream captured samples to disk continuously at up to 1.5 Msps. The maximum capture size is around 200 G samples. After having captured you can zoom and pan very quickly to find the features important to you. This video shows you how. You can capture mixed signal analog and digital at the same time.
Cleverscope Tour 2
A quick tour of many Cleverscope features, including Frequency Response, Maths, Streaming to disk, Matlab / Excel and Word connectivity, Protocol decoding, Repetitive capture and much more.
Frequency Response
Evaluating the Gain/Phase response of a switch mode power supply can be difficult because of the large amounts of switching noise. The Cleverscope application provides a synchronous Gain/Phase facility using the built in Signal Generator, and advanced DSP to automatically plot the Gain/Phase response. The adaptive signal generator output level mode uses the coherence between the stimulus and response values to achieve a good response plot. This tour is a step by step guide on measuring a switch mode power supply gain/phase response.
Cleverscope Tour
Cleverscope Tour takes you through some of the capabilities of the Cleverscope application such as Charting, Protocol
Decode, Spectrum Analysis, Matlab and Excel live link and copy and paste.
Copy and Paste
Copy and paste with Cleverscope is fast and powerful. You realize how useful it is after going back to find crucial information in the pasted graph. The same goes for File Save. Not much more effort than that, but could save you heaps of time and effort later in reproducing what you've already done.
Gain Phase Measurement
Use Cleverscope to measure the Gain Phase response of a network. Results are displayed in linear or log form, with linear or log frequency axis. Phase can be displayed in radians or degrees, and unwrapped to achieve a continuous plot. The internal 0-10 MHz sig gen, or an external sig gen can be used.
Four channel Cleverscope
This short video shows you how to connect up a 4 channel Cleverscope, and use Ethernet connections.
Knobs vs Cleverscope
People often comment that knobs are easier to use. We don't personally think so! Watch the video and make up your own mind.
Start Using a Cleverscope
This Video shows you how to start using a Cleverscope. You'll see how to capture a signal, and how to do simple triggering.
'EEVBlog Interview with Bart Schroder'
Dave caught up with the designer of the Cleverscope, Bart Schroder at the Electronex show. He gives us some history on the company, the scope, a quick on the spot teardown, and what latest scope design he's working on.
'SPI Protocol Decode'
This shows how to decode 10 seconds of SPI messages
'Cleverscope live export to Matlab Spectrogram'
This video shows how you set up a filter, and use Cleverscope to export filtered results to Matlab to display a live spectrogram.
'Cleverscope live export to Excel'
Cleverscope can export multiple individual derived values such as Frequency, RMS or Maths results using DDE to Excel. In addition you can log derived values to Excel in real time. You can save results at up to 20 result sets per second.
'Cleverscope live export to Matlab'
This video shows you how to set up the Maths equation builder to send Cleverscope signals to Matlab via a Matlab access function, get the result back, and display it.
Display, triggering and saving
Set up the oscilloscope to show a couple of cycles, adjust the trigger and then copy and paste the waveform into a Word document. (In German)
Single Event Triggering
Using two triggers in tandem to identify an event (in German)
Single Event Triggering
Using two triggers in tandem to identify an event
A simple trigger
A simple trigger to lock on sync pulses. (in German)
A simple Trigger
Set up the oscilloscope to show a couple of cycles, adjust the trigger and then copy and paste the waveform into a Word document
Display, triggering and saving
Set up the oscilloscope to show a couple of cycles, adjust the trigger and then copy and paste the waveform into a Word document
Introducing Cleverscope - What cleverscope is
Overview of the CS328A with demonstrations of the graphs, saving data, naming and scaling, maths functions and the signal generator.