For the higher frequencies, you need to change the sampling rate on the scope. It has an option for it under Run Mode. I get a clean signal all the way up to 46MHz
UPDATE. With the new 1.4.2. firmware update we now have a third trace available in the form of "FFT" (FAST FOURIER TRANSFORM) availability in glorious RED colour. It replaces the FORMAT position in the fourth menu which was used to delete the stored screen shots. It changes the "X" axis from time to frequency and as such changes the display to that of a a spectrum analyser. Frequency is plotted along the x-axis and amplitude is plotted along the y-axis. FFTs often look like a series of mountain peaks. The horizontal location of peaks indicates which frequencies are strongly present in the W/F. The valleys show which frequencies are absent. I tried this with the built in calibration sig gen on all the available W/Fs and it shows the strongest frequency is the prime 1 KHz followed in the case of square waves by diminishing amplitude peaks at each successive square wave. Quite useful when checking audio problems etc. The second change in the menu is in the 2nd row, what used to be the trigger position, is now "SAMPLE" with two choices, HD & PEAK.
Upgrade details: Added FFT mathematical function, replacing the original format key with an FFT switch. Optimized low-frequency AUTO speed and accuracy. Enhanced the scrolling scan mode. Improved the cursor display issue in scrolling mode.
I have both the 702S and 703S. Both are fine scope/meters. The only issues I have had is the 18650 cells that come with them are garbage. With new 18650’s, they work great.
I just looked up the manual. The x-y mode is handy as well as the persist feature, but I wish it did FFT. That's a problem with these cheaper handheld scopes in that most don't do FFT.
I have this exact multi-mode oscilloscope, I like this thing, it's not too bad for what I paid for. Also, if you do not trust the oscilloscope probe cable that came with it, you can actually use expensive oscilloscope probe with it since BNC is pretty standard with those cables, especially those for HP and Aligent oscilloscopes, it would give you a bit better results beyond 20 MHz bandwidth, yet something to watch out for - refresh rate isn't that stellar but still good enough for most jobs such as troubleshooting and oscillator binning.
I don't always use stand anyhow, I broke the stand on cheapo Uni-T DMM (Walmart special), so I don't bother with it - unfortunately it still will break on $1,000 portable oscilloscope so there's no reason for me to really bother.
Just regard it as a DMM / 2 channel 30Mhz scope. For about €80,- that's a steal if you do basic audio stuff like me. It gets the job done, though I still prefere a good analog scope... I'm getting old I guess ;o)
I would also want to use with rotary encoder testing in the industrial machine environment. It should work fine for that, and better than carrying the Rigol in the field. And if you back over it with the truck, not a big loss...(Dont Ask !)
Which seller did you order your 703 from? I bought mine from ZOYI Multimeter Brand Shop Store. I opened a dispute and got 180 Euros refunded. Now I have ordered a new one, this time from the Tony dropshipping Store. I have not yet received it.
Yes, like IMSAIGuy said, it's a standard BNC - in fact you can actually use $200 HP / Aligent passive oscilloscope probe cables with this oscilloscope no problem, if you don't trust those that came with ZT-703S oscilloscope.
@@DownloaderVideoWell, a multimeter and oscilloscope in one-you’re right, that’s a great idea. However, why not consider the Fnirsi DPOX180H? It’s a far better oscilloscope than this one, and you can pair it with the Zoyi ZT111, a better yet affordable multimeter that works flawlessly. As of now, you can get both for around €120, which is only slightly more than this model, but the value and performance you get are far superior. That said, based on my experience, I rarely need an oscilloscope that goes beyond 20 MHz. So, for those needs, the Zoyi 703S is still a good choice.
Shame on you for accusing me of hustling for $20. My motivation is to get people interested in the hobby of electronics. I’m privileged to have some nice test gear. But not everyone can afford or needs that stuff. I use handheld scopes all the time when I need to float a ground. Many times it’s not about the numbers. It’s just needed to know a signal is present. Don’t be a metrology snob.
Don't knock the Chinese oscilloscopes - some of them including this one, are as good as expensive oscilloscopes (they basically have the same basic internal circuit - all oscilloscopes are basically computers with ADCs attached to them nowadays). And I am not worried about limitations, as long as it's accurate and gives you whatever you want at that price. You should get this and test it for yourself along with top of the line oscilloscope, seriously. You would be surprised.
Ok dummy, now go tell momma you expressed yourself on the internet and go back to the basement. Nobody cares what you think, write a letter to RUclips or have some Fentanyl but let people who are interested watch the video and share valuable information…..bottom line, kick rocks!
Of course these Chinese scopes (and also multimeters and most other cheap testing equipment) take shortcuts. But for the price point they are sold they are very useful machines. If you want professional equipment, please do add those two or more zeros to the sales price and be proud of your unobtainium for most of us out there. And be glad channels that do reviews like this one may actually have some nice gear. They can then at least test if the cheap stuff is sufficient. In hobby electronics, many of the features the more costly western made equipment has, matter less anyway. Extreme high voltage protection? Just buy another one of these and you've learned the E80,-- lesson these are not meant to measure directly on things like vacuum tube anodes, flyback / tesla coils or active spark plugs. Extreme radio frequencies? No, do not use them to directly measure on a microwave power circuit (both the 'oven' kind and the HAM radio kind). Either they are dangerous for your health or some very interesting firmware mutilation may happen. After a GHz signal was done with one of my fathers cheap multimeters, the digit indicators started showing something akin to Ferengi. Also, never exceed one of its limits. Especially the Amp inputs of multimeters like these have a tendency to start smoking if you continuously put those 10 amps in there. For many other tasks these are wonderful machines. Just keep in mind they are not a hammer, any kind of safety gear or can float on lava. They are fine otherwise. 73, PG8W.
I appreciate the review. I just needed this for automotive diagnostics.I know very little about electronics and in tech schools you don't get a lot of background on how to use these things so I found this video helpful
For the higher frequencies, you need to change the sampling rate on the scope. It has an option for it under Run Mode. I get a clean signal all the way up to 46MHz
Similar here!
Do you get 46MHz 1 channel or 2 channels?
@@cndjonno only for 1 channel
eee najlepi to łodrazu pitolnonć fksoki !
Loved your review! Very simple, straightforward and easy to follow! No drama involved!! Thanks for your review!!!
I say it should get one thumbs-up just for having standard meter lead spacing and BNC connectors for scope input.
UPDATE.
With the new 1.4.2. firmware update we now have a third trace available in the form of "FFT" (FAST FOURIER TRANSFORM) availability in glorious RED colour. It replaces the FORMAT position in the fourth menu which was used to delete the stored screen shots. It changes the "X" axis from time to frequency and as such changes the display to that of a a spectrum analyser. Frequency is plotted along the x-axis and amplitude is plotted along the y-axis. FFTs often look like a series of mountain peaks. The horizontal location of peaks indicates which frequencies are strongly present in the W/F. The valleys show which frequencies are absent. I tried this with the built in calibration sig gen on all the available W/Fs and it shows the strongest frequency is the prime 1 KHz followed in the case of square waves by diminishing amplitude peaks at each successive square wave. Quite useful when checking audio problems etc. The second change in the menu is in the 2nd row, what used to be the trigger position, is now "SAMPLE" with two choices, HD & PEAK.
Upgrade details:
Added FFT mathematical function, replacing the original format key with an FFT switch.
Optimized low-frequency AUTO speed and accuracy.
Enhanced the scrolling scan mode.
Improved the cursor display issue in scrolling mode.
What a wonderful scope-N-meter. 🤸✨ Thank you for a great video.
Nice and handy tool for the toolbox when you are away from home. Not perfect, but cheap and portable.
Been looking at one of these, but have not bought yet, they keep getting better as we go, possible end of the year
eee lepi jagby se bółke kópił ico zezar !
I have both the 702S and 703S. Both are fine scope/meters. The only issues I have had is the 18650 cells that come with them are garbage. With new 18650’s, they work great.
Yup, changed out the battery with Molicel INR18650-P28A cell, it outlast the original garbage cell that came with my ZT-703S oscilloscope.
I just looked up the manual. The x-y mode is handy as well as the persist feature, but I wish it did FFT. That's a problem with these cheaper handheld scopes in that most don't do FFT.
Now it Does! Firmware V1.42 brings the feature.
I have this exact multi-mode oscilloscope, I like this thing, it's not too bad for what I paid for. Also, if you do not trust the oscilloscope probe cable that came with it, you can actually use expensive oscilloscope probe with it since BNC is pretty standard with those cables, especially those for HP and Aligent oscilloscopes, it would give you a bit better results beyond 20 MHz bandwidth, yet something to watch out for - refresh rate isn't that stellar but still good enough for most jobs such as troubleshooting and oscillator binning.
Very nice indeed
Might be good for automotive troubleshooting?
I've just got one of these. The stand is remarkably fragile. Don't ask me how I know!
Imagine how many days of design work it took them to make it so flimsy.
I don't always use stand anyhow, I broke the stand on cheapo Uni-T DMM (Walmart special), so I don't bother with it - unfortunately it still will break on $1,000 portable oscilloscope so there's no reason for me to really bother.
Did you check the current reading capabilities on the unit? I know Dave at the @EEVblog had issues with it about 7 or so months ago.
It copes with analogue video signals well though the trigger level needs to be set correctly.
Just regard it as a DMM / 2 channel 30Mhz scope. For about €80,- that's a steal if you do basic audio stuff like me. It gets the job done, though I still prefere a good analog scope... I'm getting old I guess ;o)
eee jobym go potraktowoł jak jaki kamień za psem
I really just need something to see pulses from encoders in the oil field? anyone used it on RPM counter cards at PLCs ?
I would also want to use with rotary encoder testing in the industrial machine environment. It should work fine for that, and better than carrying the Rigol in the field. And if you back over it with the truck, not a big loss...(Dont Ask !)
Got two probes with mine, maybe the free ones are one probe.
I bougth one its a great scope for a poor country like portugal, its great to complement my cro 20mhz , it fits the bench.
Ordered a 703 with 2 probes from Aliexpress. Received the old model702. Beware!
Same thing happened to me.
Which seller did you order your 703 from? I bought mine from ZOYI Multimeter Brand Shop Store. I opened a dispute and got 180 Euros refunded. Now I have ordered a new one, this time from the Tony dropshipping Store. I have not yet received it.
@@ltorela they promised a refund but so far not found on my credit card.
@@LawpickingLocksmith Sorry, 18 Euros refund.
@@ltorela Still waiting for mine. It had a neutral box and 2 50MHz probes but only 1 input. Now I want to buy the Rigol 804 but fear the same story.
Why would they just have 1 scope probe knowing it’s a two channel scope. And are scope inputs standard BNC connectors?
Yes standard bnc.
Yes, like IMSAIGuy said, it's a standard BNC - in fact you can actually use $200 HP / Aligent passive oscilloscope probe cables with this oscilloscope no problem, if you don't trust those that came with ZT-703S oscilloscope.
Wanted to buy it, but now I am not sure I will .
Not many options in that price range that work any better.
@@DownloaderVideoWell, a multimeter and oscilloscope in one-you’re right, that’s a great idea. However, why not consider the Fnirsi DPOX180H? It’s a far better oscilloscope than this one, and you can pair it with the Zoyi ZT111, a better yet affordable multimeter that works flawlessly.
As of now, you can get both for around €120, which is only slightly more than this model, but the value and performance you get are far superior.
That said, based on my experience, I rarely need an oscilloscope that goes beyond 20 MHz. So, for those needs, the Zoyi 703S is still a good choice.
E nacuś to kópowoł ! lepi se było bółke kópić ico zezryć !
I went too purchase and instead I filled out a request message. 😂
Wish me luck.
Why these mfrs insist on using shiny, highly reflective plastic for their screens is beyond me. Just screams cheap.
The auto function on the oscilloscope is useless.
Seven times out of ten it wont find the correct signal.
All these guys on youtube surrounded by good metrology gear pretending these chinese toys are good all to make $20 in adsense or whatever. Shame.
Shame on you for accusing me of hustling for $20. My motivation is to get people interested in the hobby of electronics. I’m privileged to have some nice test gear. But not everyone can afford or needs that stuff. I use handheld scopes all the time when I need to float a ground. Many times it’s not about the numbers. It’s just needed to know a signal is present. Don’t be a metrology snob.
Don't knock the Chinese oscilloscopes - some of them including this one, are as good as expensive oscilloscopes (they basically have the same basic internal circuit - all oscilloscopes are basically computers with ADCs attached to them nowadays). And I am not worried about limitations, as long as it's accurate and gives you whatever you want at that price. You should get this and test it for yourself along with top of the line oscilloscope, seriously. You would be surprised.
Ok dummy, now go tell momma you expressed yourself on the internet and go back to the basement. Nobody cares what you think, write a letter to RUclips or have some Fentanyl but let people who are interested watch the video and share valuable information…..bottom line, kick rocks!
Of course these Chinese scopes (and also multimeters and most other cheap testing equipment) take shortcuts. But for the price point they are sold they are very useful machines. If you want professional equipment, please do add those two or more zeros to the sales price and be proud of your unobtainium for most of us out there. And be glad channels that do reviews like this one may actually have some nice gear. They can then at least test if the cheap stuff is sufficient.
In hobby electronics, many of the features the more costly western made equipment has, matter less anyway. Extreme high voltage protection? Just buy another one of these and you've learned the E80,-- lesson these are not meant to measure directly on things like vacuum tube anodes, flyback / tesla coils or active spark plugs. Extreme radio frequencies? No, do not use them to directly measure on a microwave power circuit (both the 'oven' kind and the HAM radio kind). Either they are dangerous for your health or some very interesting firmware mutilation may happen. After a GHz signal was done with one of my fathers cheap multimeters, the digit indicators started showing something akin to Ferengi. Also, never exceed one of its limits. Especially the Amp inputs of multimeters like these have a tendency to start smoking if you continuously put those 10 amps in there. For many other tasks these are wonderful machines. Just keep in mind they are not a hammer, any kind of safety gear or can float on lava. They are fine otherwise. 73, PG8W.
I appreciate the review. I just needed this for automotive diagnostics.I know very little about electronics and in tech schools you don't get a lot of background on how to use these things so I found this video helpful