Products > Test Equipment
Best portable scope under $200 for pinball work
SilverBallzzz:
Hi - Newbie here, first post alert!
I need a portable oscilloscope primarily for basic debugging and troubleshooting of pinball machines, guitar amplifiers, engine controls (both automotive and marine). Ideally, I'm hoping to find something suitable for under $200 and believe I have reasonable expectations for workman's tool rather than a precision bench testing instrument for developing new designs.
Specwise and applications, I think I need at least a 2-channel scope with at least 50MHz of real bandwidth with simple triggering, memory is nice and USB to transfer screen caps would be useful. A built in signal generator would also be great. Voltage protection if I forget to use a 10x probe on 600V bias test points. Many of the pinball machines are old TTL logic running slow MPU's in the 6800 series family, etc. Simple signal tracing. Looking for AC ripple on power supplies. Bad filter caps, etc. Am I missing something?
There are a lot of cheap candidates on eBay, Amazon, etc and many aren't listed here like the Leolov. Specifically,
1. Leolov: https://www.amazon.com/dp/B0B497T6HR?ref_=cm_sw_r_cp_ud_dp_FV71VMZ3VNZ2P25RP8F6 (there nothing about this brand on these forums)
2. FNIRSI 1013D https://a.co/d/59wj3Yk
3. FNIRSI 1014D https://a.co/d/01C7WaU
I am familiar with the other brands like Rigol, Siglent, etc but these are out of my price range. But - sanity check, please - am I being penny wise and dollar foolish?
Again, I don't expect a precision test instrument. I just need a basic troubleshooting aid and understand its unreasonable to expect much in support or high levels of accuracy in this price range. So... thoughts and suggestions?
Sincerely appreciate any thoughts and recommendations!!
tunk:
The two latter have a real bandwidth of 30Mhz, and it wouldn't
be a surprise if that's true for the first as well. Take a look at e.g.
Owon HDS242S or Hantek 2D42.
tautech:
--- Quote from: SilverBallzzz on November 30, 2022, 07:55:06 pm ---
1. Leolov: https://www.amazon.com/dp/B0B497T6HR?ref_=cm_sw_r_cp_ud_dp_FV71VMZ3VNZ2P25RP8F6 (there nothing about this brand on these forums)
2. FNIRSI 1013D https://a.co/d/59wj3Yk
3. FNIRSI 1014D https://a.co/d/01C7WaU
I am familiar with the other brands like Rigol, Siglent, etc but these are out of my price range. But - sanity check, please - am I being penny wise and dollar foolish?
--- End quote ---
Welcome to the forum.
100%, don't touch much of the uber cheap junk as it's not fit for purpose.
Their greatest failing is sensitivity especially when coupled to what we most commonly use, a 10x probe then resultant sensitivity is just 500mV/div which is useless for any LV work. Just as bad is 1x sensitivity where 50mV/div is not worth a knob of goat shit for checking ripple on a power rail.
After that worthy dump of poo on such shit products, only 2 closing words, just don't !
pcprogrammer:
The first one looks familiar. Aliexpress also sells it: https://fr.aliexpress.com/item/1005004469022608.html
The other two scopes are indeed only ~30MHz BW and 200MSa/s per channel.
More info on them here:
https://www.eevblog.com/forum/testgear/fnirsi-1013d-100mhz-tablet-oscilloscope/
https://www.eevblog.com/forum/testgear/new-bench-scope-fnirsi-1014d-7-1gsas/
I expect that the first one is also not to honest about the specs. In my mind I have the feeling a review has been done here on the forum, but there are so many of these cheapo scopes reviewed here on the forum, that I lost track :-DD
Edit: Found the first one: https://www.eevblog.com/forum/testgear/new-2ch-pocket-dsosg-sigpeak-dso2512g/
It is SigPeak or Zeeweii. Sample rate either 200MSa/s with only one channel or 100MSa/s per channel going by the PCB layout and most likely used ADC.
@tunk That you did not recognize it, because you started that thread :-DD
Mechatrommer:
i watched specs for portable scopemeters closely for some years, Uni-T, Hantek, cheap no brand china toy SigPeak etc (with exception/excluding tablet style Fnirsi). nothing clicked me until.... btw if you happened to buy one of those and then later look at the Owon HDS200 series, i think you are going to regret your purchase https://www.owon.com.hk/products_owon_hds200_series_digital_oscilloscope ... namely its phenomenal refresh rate compared to toys... Owon HDS272S is $175, 2 ch + AWG in aliexpress.. if you plan ahead, you can get HDS2102S 500MSa/s 100MHz version with just few dollars added to the $200... and there is newly released HDS2202S if you want 1GSa/s... HDS2102S already helped me in a project where i want to probe "not ground referenced" voltage level, its like separate isolated differential probe that works beside my bench gnd referenced Rigol DS1054Z. ymmv.
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