Products > Test Equipment
Please recommend a scope (or other device) purely for audio testing.
<< < (4/8) > >>
David Hess:
I have never used them but Syscomp Design makes some instruments which may suit your needs.

http://www.syscompdesign.com/Instruments_ep_42.html
nctnico:
Another option would be to look for a network analyser. Say something which goes from several Hz to several MHz. These aren't cheap (although good deals can be found) but do save a lot of trouble. A network analyser is also useful for various other tasks like an LCR meter. I just wanted to mention this for completeness if it hasn't been mentioned already.
Someone:

--- Quote from: egonotto on June 12, 2017, 07:23:40 pm ---Hello,

uktony wrote:

--- Quote from: uktony on June 12, 2017, 02:56:42 pm ---So what would I like:

* FFT / bode plotting
* Downloadable data
* Linux compatibility would be nice (to enable scripted testing)
* An onboard DDS generator
* USB connectivity *or* a method to store data (if not a USB scope)
--- End quote ---
When I understand correct the tsunami is essential a DDS-generator.
The input has only 15KS/s.
--- End quote ---
The tsunami board has an input with phase/frequency measurement and a peak detector to estimate amplitude. So its a very basic network analyser with a broadband peak detector that will overestimate amplitude, limit the dynamic range, and hide non-linear effects.
ruairi:

--- Quote from: nctnico on June 12, 2017, 10:56:47 pm ---Another option would be to look for a network analyser. Say something which goes from several Hz to several MHz. These aren't cheap (although good deals can be found) but do save a lot of trouble. A network analyser is also useful for various other tasks like an LCR meter. I just wanted to mention this for completeness if it hasn't been mentioned already.

--- End quote ---

The 50 ohm inputs / low max input levels on most network analyzers complicate matters, very few pieces on audio gear will be happy with those conditions.
Keicar:

--- Quote from: f5r5e5d on June 12, 2017, 07:32:03 pm ---for amplifier circuits for audio, whether op amp or discrete, stability verification requires 10s of MHz viewing BW at the least

--- End quote ---

Absolutely - no need for fancy analysis features at such bandwidth, but you do need a way to see oscillation and ringing at such frequencies - an audio amplifier that's behaving like an RF oscillator will draw excessive current and sound nasty, but detailed analysis at audio frequencies won't reveal the cause of the problem.
Navigation
Message Index
Next page
Previous page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod