Looked through the Scottrade12 offers on ebay. Got stuck for some hours just looking those companies up.
That Metrix GX5000-MoD pulse generator at MJTRONIX looks nice, although.
https://www.ebay.co.uk/itm/114681080274?hash=item1ab38669d2:g:6qIAAOSwXIpgJnBF
Love the GX5000, have one, two other people I know in frog land also have one.
They are quite rare I find, from what I gather they were sold only in 1998 or something.
When I got mine it was also on Ebay UK , I don't know, maybe 4 years ago, for half the price this is one is at.
I remember the seller saying back then, that he had got hold of a bunch of these, like really a bunch... 2 dozen or something... looks like they slowly finding their way on various Ebay sellers, mostly always in the UK. 99% of the time I see them for sale on Ebay UK, not France or Germany... maybe Metrix sold there only in the UK ? Don't know...
Have 2 people I know here in Frog land who also have one. We are all 3 equally desperate to find schematics for it, but it's not going to happen.
Metrix can't even find schematics of their stuff to save their life, 99% of the time I ask them, and this GX5000 is even more hopeless since they said they actually did NOT design it themselves (they don't have the R&D power to design such nice stuff, never had), it was subcontracted ti.... they would not tell.
I love mine even though the user interface is very quirky / painful when it comes to using the 4 arrow keys to set a numerical value.
Their fan is quite loud, yet it gets too warm and after an hour or so of running, mine stops working, outputs shuts off and display spits out complete garbage, then eventually it freezes.
But before it does that, the frequency of the output signal is extremely both inaccurate as well as unstable.
Here is a quick video I did back then, where I set the GX5000 to 10MHz / 100ns period, and I get 10,002,50 Hz .. yes 2,5kHz off !
As for instability, as you can see it spans several hundred Hz !
I guess there must be a PLL somewhere that fails to lock, but without schematic it's not going to be a lot of fun...
Still, I love this little thing, and its rarity makes me love it even more. So, I WILL definitely spend the time and effort to try to fix it...one day...