23-12-2023, 01:25 PM
(This post was last modified: 23-12-2023, 01:28 PM by Mike Watterson.)
Info is sparse 
https://www.radiomuseum.org/m/dawei_gb_en_1~year.html
I'd heard of Dawe, but never seen that WD monster you have!
I use a good sound card or external USB box with free desktop software for audio now. Generators, scope, analysers, counters, distortion measuring etc. Depending on DAC and electronics the 3.5mm jack socket on some Android phones and tablets can be better than older gear, or very cheap audio function generators. Might be better than the 'scope, to measure distortion, though a nice scope
Some old HP, inc one of their original bits of test gear, had very low distortion audio. Specially selected filament lamp in the feedback loop reduced distortion.
I also have one random function generator/counter (up to 2MHz and not low distortion on the sine wave) and a nearly unusable user interface DDS 0.01 Hz to 30 MHz, but very low distortion.
The 1.5 GHz Rigol spectrum analyser + tracking generator mysteriously starts at 19 kHz. It works as a 0 to -20dB fixed signal gen by setting span to 0Hz (there is a menu for that). A nanoVNA isn't much good as a generator.
https://www.radiomuseum.org/m/dawei_gb_en_1~year.html
I'd heard of Dawe, but never seen that WD monster you have!
I use a good sound card or external USB box with free desktop software for audio now. Generators, scope, analysers, counters, distortion measuring etc. Depending on DAC and electronics the 3.5mm jack socket on some Android phones and tablets can be better than older gear, or very cheap audio function generators. Might be better than the 'scope, to measure distortion, though a nice scope
Some old HP, inc one of their original bits of test gear, had very low distortion audio. Specially selected filament lamp in the feedback loop reduced distortion.I also have one random function generator/counter (up to 2MHz and not low distortion on the sine wave) and a nearly unusable user interface DDS 0.01 Hz to 30 MHz, but very low distortion.
The 1.5 GHz Rigol spectrum analyser + tracking generator mysteriously starts at 19 kHz. It works as a 0 to -20dB fixed signal gen by setting span to 0Hz (there is a menu for that). A nanoVNA isn't much good as a generator.
