Another AWG issue. One issue with the AWG, Picoscope 6.6.23 and 4262 is ringing. AWG-sq-ring.gif It looks like the AWG pushes the bandwidth limit of the DAC/filter. For the 4262 hardware any other waveforms than sine are more or less useless, either the bandwidth/slew rate is very limited or there a...
When I apply 142mV (100mV rms) from the internal signal generator to Ch A I do measure: Amplitude at peak: -20.69 dBV Average amplitude at peak: 74.2mV Why do I read 74.2mV and not 92.4mV that is equal to -20.69 dBV? And why not 100mV or 142mV (peak value)? According to the Picoscope 6 users guide (...
Here is a test of THD, THD+N and S/N measurements. For this DUT 3HD is dominant at ~51dB below the fundamental that corresponds with the THD measurement. But the THD+N reading has to be wrong: -96dB is the same as measured S/N -- where has the THD portion of the THD+N gone? THD+N.gif PicoScope® 6 - ...
I'm doing rise time measurements using an external generator. Square wave is 2kHz, 10Vpp. 80/20% measurement tells me 400ns but 90/10% says 153us (!) Adding cursors to the graph indicates 680ns for the 90/10%. Why is the 90/10% measurement so far out? PicoScope® 6 - PC Oscilloscope software version:...
One word: Brilliant!
I ran a quick test connecting probe A/B before/after a filter and the phase shift read-outs matched the filter's transfer function very well.
To find the phase shift between two signals (Ch A and B) I: a) Add a cycle time measurement to Ch A (or B). b) Use cursors to measure the time delay between signal A and B. c) Calculate the phase shift from the information above. Is it possible to implement a measurement into PicoScope 6 that calcul...
If the problem is related to the time stamping of the generated signal (to calculate phase) it could maybe be possible to sample the generated signal by lets say channel A while reading the DUT by channel B?
Not a perfect solution but that doesn't require changes within the scopes..
Any progress regarding the Bode plots?
It should have been very easy to implement this feature into the Pico-software: Sweep the signal generator from frequency x to frequency y, and sample the amplitude and phase of the signal..