Search found 18 matches

by Andreas_
Mon Jan 18, 2021 10:38 pm
Forum: Pre-Sales Advice
Topic: Search for a scope to measure LDO regulator noise and PSRR
Replies: 6
Views: 9802

Re: Search for a scope to measure LDO regulator noise and PSRR

Hello Gerry, the only missing specs above are the noise floor and the passband curve. for the 1/f amplifier the noise floor is about 100-200nVpp. But this is only valid if you have selected the input capacitor for low leakage current. (~30 nA max for the 3300 uF). 20210103_Noise_floor_10V_NiMH_Batte...
by Andreas_
Sat Jan 16, 2021 11:27 am
Forum: Pre-Sales Advice
Topic: sampling Rate with enhanced resolution
Replies: 2
Views: 6984

Re: sampling Rate with enhanced resolution

Hello, after my experience there is no (direct) dependancy between sampling rate and enhanced resolution. The enhanced resolution is only used for the display and gives a sliding average of 256 samples on the display with 4 Bit resolution enhancement. (so some kind of low pass filter for the display...
by Andreas_
Sat Jan 16, 2021 10:23 am
Forum: Pre-Sales Advice
Topic: Search for a scope to measure LDO regulator noise and PSRR
Replies: 6
Views: 9802

Re: Search for a scope to measure LDO regulator noise and PSRR

Hello, I am using a PicoScope 5444A to measure noise of voltage references together with 2 different low noise pre amplifiers. One is a self made 1/f noise amplifier with 10000 fold amplification and limited band width of 0.1 to 10 Hz. Schematic (attached Filt1105w.pdf) see here: http://www.eevblog....
by Andreas_
Sat Jan 16, 2021 9:48 am
Forum: Pre-Sales Advice
Topic: analog offset on picoscope 5000 series
Replies: 1
Views: 6355

Re: analog offset on picoscope 5000 series

Hello, the offset that you can apply is of course dependent on the selected range. The odd thing with offsets is that it is not shown on the scaling. So a -1V offset in the +/-2V range shows you a -1V value when the input is zero. (with effective -1 to 3V measurement range shown in a +/-2V display. ...
by Andreas_
Sat Jan 16, 2021 7:45 am
Forum: Pre-Sales Advice
Topic: Differences PicoScope 4824 and 4824A
Replies: 2
Views: 7576

Re: Differences PicoScope 4824 and 4824A

Hello Gerry,

thanks for clarification.

with best regards

Andreas
by Andreas_
Thu Jan 14, 2021 8:18 am
Forum: Pre-Sales Advice
Topic: Differences PicoScope 4824 and 4824A
Replies: 2
Views: 7576

Differences PicoScope 4824 and 4824A

Hello,

what exactly are the differences between PicoScope 4824 and the brand new 4824A?
From first viewing of the specifications I can see no differences.
Or have I overlooked something?
Will the software work different (in test automation with command line calls?)

with best regards

Andreas
by Andreas_
Tue Nov 03, 2020 7:20 pm
Forum: Applications
Topic: Frequency Response Analyzer with Bode Plots
Replies: 631
Views: 3287513

Re: Frequency Response Analyzer with Bode Plots

Hello I have read that and installed that, I just downloaded your software and when I connect the picoscope with my laptop but in the FRA4Picoscope it says "no compatible picoscope device not found" This happens to me mostly when the PicoScope 6 software is still running and occupying the USB Port....
by Andreas_
Tue Nov 03, 2020 6:06 am
Forum: Applications
Topic: Frequency Response Analyzer with Bode Plots
Replies: 631
Views: 3287513

Re: Frequency Response Analyzer with Bode Plots

Hello Aaron,

do you plan to support (cheap) external function generators e.g. like the FY6800?
Would be nice to extend the frequency range to 60 MHz.

with best regards

Andreas
by Andreas_
Fri May 31, 2019 6:53 am
Forum: Applications
Topic: Frequency Response Analyzer with Bode Plots
Replies: 631
Views: 3287513

Re: Frequency Response Analyzer with Bode Plots

kirankanchi wrote:
Mon May 20, 2019 5:55 am
I tried with FRA with my PICO 5444B but i get error : Error: Unable to initialize device with serial number FX923/063.
Hello,

Something similar also happened to me when I had running the PicoScope 6 software in the background.

with best regards

Andreas
by Andreas_
Fri May 31, 2019 6:50 am
Forum: Applications
Topic: Frequency Response Analyzer with Bode Plots
Replies: 631
Views: 3287513

Re: Frequency Response Analyzer with Bode Plots

Hello Aaron,

thats fine for me

thanks

Andreas
by Andreas_
Thu May 30, 2019 8:14 pm
Forum: Applications
Topic: Frequency Response Analyzer with Bode Plots
Replies: 631
Views: 3287513

Re: Frequency Response Analyzer with Bode Plots

Hello Aaron, again me with a question for improvement. I am testing my 0.1 .. 10 Hz Low Noise amplifiers with a PS5444A. When I try this frequency range with 24 steps/decade I get several duplicate frequencies. Obviously the minimum resolution of the PS5444A is 0.04 Hz from frequency step to frequen...
by Andreas_
Thu Nov 30, 2017 3:12 pm
Forum: PicoScope 6 for Windows
Topic: Manual single trigger in PicoScope 6
Replies: 4
Views: 6391

Manual single trigger in PicoScope 6

Hello, I am doing often noise measurements (0.1 - 10Hz) on voltage references/batteries. This is done by single trigger measurements 10 sec/div. (100 sec measurement time). Sometimes the noise of the source is so low that the normal trigger edge at 0 volts needs a very long time until the measuremen...
by Andreas_
Fri Aug 11, 2017 6:57 pm
Forum: Applications
Topic: Frequency Response Analyzer with Bode Plots
Replies: 631
Views: 3287513

Re: Frequency Response Analyzer with Bode Plots

Hello Aaron,

don´t know wether you have a PS4824 in your compatibility list.
Today I could do a quick check at the device from work.

I also have the error code 46 on this device.
But the bode plot looks to be ok.
Compared to the PS5444A-plot some days ago.

With best regards

Andreas
by Andreas_
Tue Jul 25, 2017 9:05 pm
Forum: Applications
Topic: Frequency Response Analyzer with Bode Plots
Replies: 631
Views: 3287513

Re: Frequency Response Analyzer with Bode Plots

Hello Aaron, im using the 5444A. My 2nd question was not to turn off the whole numbering of the axis. I do simply not want 2 same numbers on different places on the y-axis. So I need either a further digit (-41.15) or leaving off every 2nd number of the y-axis. Otherwise the Y-axis numbering is some...
by Andreas_
Sat Jul 22, 2017 8:05 am
Forum: Applications
Topic: Frequency Response Analyzer with Bode Plots
Replies: 631
Views: 3287513

Re: Frequency Response Analyzer with Bode Plots

Hello Aaron, thanks for the very nice tool. It helped me to adjust my low noise measurement amplifier 10-100kHz. https://www.mikrocontroller.net/attachment/336083/20170717_AN83_unadjusted_10Hz_100kHz.PNG https://www.mikrocontroller.net/attachment/336188/20170720_AN83_R9_5K19_10Hz_100kHz.PNG I have o...