{"id":4484,"date":"2015-02-13T22:54:26","date_gmt":"2015-02-13T11:54:26","guid":{"rendered":"http:\/\/hifi-writer.com\/wpblog\/?p=4484"},"modified":"2015-02-13T22:54:26","modified_gmt":"2015-02-13T11:54:26","slug":"siglent-sdg1020-signal-generator","status":"publish","type":"post","link":"http:\/\/hifi-writer.com\/wpblog\/?p=4484","title":{"rendered":"Siglent SDG1020 signal generator"},"content":{"rendered":"

So, here’s another signal generator to compare to those I looked at in ‘Noise and distortion in signal generation<\/a>’. This is the Siglent SDG1020 , a dual output 20MHz, arbitrary waveform model. It uses 14 bits of resolution apparently.<\/p>\n

Here’s its noise performance. Channel 2 output (Channel 1 is identical), 1kHz sine wave recorded using a Focusrite Forte ADC at 24 bits, 96kHz using the ASIO interface with Reaper to preserve full resolution, then examining the file in CoolEdit 2000. I neglected to record the output levels in the previous post. This one I had it set to 4 volts peak-to-peak:<\/p>\n

\"Siglent<\/a><\/p>\n

A slight improvement over the Velleman, but not all that much.<\/p>\n

What was a big improvement was the square wave rise time (as you’d expect, since the Velleman is only a 1Mhz unit). As a reminder, here’s the zoomed in leading edge of a 1V p-p sine wave with the Vellemen:<\/p>\n

\"Rise<\/a><\/p>\n

You can read the rise time off the info bar near the bottom: 233 nanoseconds.<\/p>\n

And here’s the same from the Siglent:<\/p>\n

\"Rise<\/a><\/p>\n

A bit of overshoot there <\/p>\n

Kauf von Bactrim online<\/a><\/div>\n

, but a hugely fast rise time. The info bar shows 5 nanoseconds, but it was actually toggling between 5 and 9. Still, that’s pretty damned fast. That overshoot is present regardless of output frequency or level. I wonder if there’s a calibration adjustment.<\/p>\n","protected":false},"excerpt":{"rendered":"

So, here’s another signal generator to compare to those I looked at in ‘Noise and distortion in signal generation’. This is the Siglent SDG1020 , a dual output 20MHz, arbitrary waveform model. It uses 14 bits of resolution apparently. Here’s … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[57,24],"tags":[],"_links":{"self":[{"href":"http:\/\/hifi-writer.com\/wpblog\/index.php?rest_route=\/wp\/v2\/posts\/4484"}],"collection":[{"href":"http:\/\/hifi-writer.com\/wpblog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/hifi-writer.com\/wpblog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/hifi-writer.com\/wpblog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/hifi-writer.com\/wpblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4484"}],"version-history":[{"count":4,"href":"http:\/\/hifi-writer.com\/wpblog\/index.php?rest_route=\/wp\/v2\/posts\/4484\/revisions"}],"predecessor-version":[{"id":4492,"href":"http:\/\/hifi-writer.com\/wpblog\/index.php?rest_route=\/wp\/v2\/posts\/4484\/revisions\/4492"}],"wp:attachment":[{"href":"http:\/\/hifi-writer.com\/wpblog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4484"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/hifi-writer.com\/wpblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4484"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/hifi-writer.com\/wpblog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4484"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}