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Failed to connect to MySQL: (1203) User howardkn already has more than 'max_user_connections' active connectionsPath: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Don Y Newsgroups: sci.electronics.design Subject: Re: Low spec 'scope. Date: Wed, 28 Aug 2024 08:32:46 -0700 Organization: A noiseless patient Spider Lines: 23 Message-ID: References: <1qyzrl3.ocj6lm4e4yaN%liz@poppyrecords.invalid.invalid> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Date: Wed, 28 Aug 2024 17:32:52 +0200 (CEST) Injection-Info: dont-email.me; posting-host="9f1238e41639ce871615f9181e351d62"; logging-data="3713644"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/H8/ildmcUVIII9KIepAFg" User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.2.2 Cancel-Lock: sha1:6DKwYRBFVpDSV8TwIYRL9JQV7vc= In-Reply-To: Content-Language: en-US Bytes: 2252 On 8/28/2024 7:47 AM, Martin Brown wrote: > On 28/08/2024 08:39, Liz Tuddenham wrote: >> The recent thread on high-end oscilloscopes has reminded me of a project >> that I shelved some years ago and might be due for resurrection:  I am >> looking for a real-time display about 3" x 4" that can behave as an X-Y >> oscilloscope with a bandwidth of about 100 Kc/s; a flat panel would be >> ideal. >> >> Currently I am using an actual X-Y oscillocsope to monitor the output >> from a stereo gramophone cartridge, which allows me to check historic >> discs for damage or faulty recording geometry.  The tube is about 14" >> long, which means it has to be a standalone shelf unit and I can't build >> anything like it into portable equipment. > > I think that Daqarta software can probably do about what you want using the PC > stereo soundcard to digitise X & Y. 100kHz bandwidth might be pushing it but it > should be fine for audio up to 20kHz. Does it *simultaneously* sample each channel? Or, toggle between them? The advantage would be that you could locate the data acquisition hardware separately from the (COTS) display.