| 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. |
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