I have been considering the purchase of a Rigol MSO5000 series scope but it is rather a lot of money to justify for a hobbyist. I could set aside a budget of around £800 and the DSO5074 at the moment is £850 including VAT which I could stretch to, this having been apparently reduced by almost £100. I would have to buy the probe later, or perhaps make one by following one of the two projects on EEVBLOG.
Incidentally, I did look at the Siglent 2102/2104 but since these cost considerably more, they are out of the running.
I already own a Rigol 1054Z which has been adequate for messing around with micro-controllers and vintage computer repairs and catching transients. However, I also like to work with vintage radio (valve and transistor) as well as other analog repairs. Sometimes an analog scope can be more useful than a digital one so I would like to keep at least one analog scope around for such occasions. As for analog scopes, I own a Tek 468 10MHz storage/100MHz 2CH hybrid digital/analog scope with GPIB (useful for dumping screenshots), a Philips PM3094 200MHz 4CH analog which was my last upgrade some three or four years ago, and more recently I have acquired a Tek 475 200MHz 2CH scope. The Phillips PM3094 is a nice instrument, but seems to struggle at FM radio frequencies. I haven't had the opportunity to compare the Tek 475 in this scenario yet but I would like be able to view frequencies up to the 2M ham band. A scope with bandwidth anywhere beyond that is just going to be way out of my budget.
Obviously I will not need all of these oscilloscopes, so I have decided that if I go ahead an purchase the MSO5074, then at least two of the analog scopes or maybe even the 1054Z will have to be sold. Because of the amount of work I put into it, I am the least inclined to sell the 468. I am probably most inclined to sell the PM3094. I do not actually need to sell anything, but I should probably also point out that storage and work space is a significant problem so getting rid of a couple of these large instruments would certainly be advantageous and would help to offset the cost somewhat. I am struggling to decide which ones to sell.
I did also consider selling my HP function generator as it is also pretty big and has an awkward deep footprint, but it seems that the sig gen built into the MSO5000 can only manage 2.5Vpp? Is this even adequate to drive a 5V TTL circuit? I do also have a separate RF sig gen for radio servicing purposes as well as an FY6900 function generator so could probably manage without the HP. Still, it is a nice unit.
As mentioned, £800 is a lot of money so naturally the question arises whether spending that much is justifiable for mostly hobbyist activities, i.e. I am forced to ask myself the question "do I really need this?". I suspect that the answewr is that it is probably more of a want than a need, although having seen both the MSO5000 and the 1054Z (as well as the Siglent) side by side at the recent Hamfest, I did feel that the larger screen would be beneficial. The Fourrier transforms and pseudo spectrum analyser function and the 16-channel LA also seemed rather useful.
Incidentally, I also saw there an example of the HDO series although this does not appear to be available for sale yet. In any case, it is in a much higher price bracket.
What I would like to know is:
a) is there anything else in the price range that will give me the same value for money as the Rigol MSO5000 series?
b) which of the scopes should I get rid of and which one to keep?
c) should I simply stick to and be content with what I have?
Decisions. Decisions.