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JunTek PSG9080 Programmable Signal Generator (80 MHz - 300 MSa/s - 14-bit)

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Muxr:
I don't have a sig-gen that can produce such high frequency (other than my RF signal generators). Was interested but part numbers being lasered off is a big turn off for me. How far we've come.

We went from quality equipment and companies which would provide beautiful service manuals with schematics and even provide you with a roll of factory solder to companies lasering off, off the shelf component part numbers. Such a shame.

Edison:

--- Quote from: radiolistener on February 25, 2024, 02:41:21 pm --- module or just power it from external 5V / 2A PSU. You can power it from USB power bank.

--- End quote ---

Attention! the minimum requirement for a DC power supply is 3A, during normal operation it can easily reach 1.8A under load, and at the moment when another command comes, it will easily exceed the limit of two Amps and distortion may occur due to insufficient power supply. As I already wrote, the original source can handle 4A without a problem.

Nice day 🙂 Tom

Edison:
So I did a little research, an audio quality Ultra Low Noise linear power supply will easily swing over $100 (think with professional grade mechanical modifications). It is a question of whether this investment is worth it and whether an ordinary linear source with slightly better filtering will suffice.

First I'll do another measurement to see how much noise from the source affects the generator board, from what I've found so far the main board itself is producing some noise.
Thanks to the oscillator's fine correction function, the effect of the external reference is not satisfactory as Tony Albus found out while editing

Edison:
I almost forgot: I have the GOUPCHN logo on the device, but inside it says Juntek - HW says 1.2 and the board says 1.3

RUS:
Hi All

Has anyone tested sweep frequency on VCO mode ( to connect sawtooth to MOD input  5v p/p offset 2.5 v)?  It works?

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