AE20125 is a 10 MHz sweep DDS Function Generator.
It's a kit from ASCEL, it is well documented. There is a
version which can be controlled by a computer with an USB connector. I bought the Kit, the case, and the power adapter.
Here is a link to ASCEL web site
http://www.ascel-electronic.de/
I bought my kit on ebay, then when i received it i thought that was
necessary to buy also the case and the power supply, that i bought directly on ASCEL site.