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Thans ,I am from India

Good memories there...(just spotted this on your channel) I started my electronics hobby wirh a Philips kit EE1050 and later the EE1051 (There was a 1052 but I never got that) I suppose I was about 7 or 8 yo then. Those kits were so well thought out given the age. The 1050 used the same system, and was about half the size of breadboard but the same system, carts springs and wires... It was way to advanced for me at the time, but I eventually worked it out, The penny dropped when | spotted and worked the 2.2K colour code :-) Very happy days. Andy

In reality, that is exactly how most analogue scopes produced two traces - when using a setting called "chop", which was useful for slow signals - there was another setting called "alt" that selected between the inputs for alternate scans - more useful for faster signals. Yes, there were scopes with two physical beams -and, yes, you would have to be very rich to have one of those. I still prefer analogue scopes for a lot of work (I mostly work on SMPS's). The UI is massively faster to use (especially with 40 years experience of it ;-) and the relationship between what is happening and what is displayed is VERY STABLE INDEED. Check RUclips reviews of digital scopes, and you will see that different digital scopes give radically different displays for the same input!

In reference to SMD components: I'm 63 and I have no intention of ever trying to solder SMDs 😂😂

Excellent video, thank you very much!!

Another great video. What tester did you use to gather the transistor data?

Great to remember the old days ! One thing could be useful on modern scope is to display dots instead of lines, that should make the display closer to analog scopes

Beautiful work! This seems very similar to the analog to digital converter in modern scopes taking discrete samples of the waveform and then playing connect the dots on the display.

I THINK ANALOG OS DID BETTER JOB OF SHOWNG THE SIGNALS THAN THE DS?

"if you had a two-channel, you'd be very very wealthy... or broke" made me literally laugh out loud. :)

Good job. Thanks. I well remember these from 50 years ago, although as a computer field service technician at the time I always had a dual trace oscilloscope in the company vehicle and could also use it for personal use when at home.

Why didn’t you just use the 10mhz gps as an external reference for your siggen? And why didn’t you add markers to give you the actual frequency of the peak?

Interesting article, do you have any tutorials of how to get a split supply for the op amps from a standard +/- supply please?

No hypocrisy, there are honest companies in China and there are dishonest companies / people in China just as they are in the rest of the world. Sadly, just like everywhere else there are more dishonest people than honest people. China with their more than 1.4 billion people of course has a large share but on a world average it is about the same. So why are you surprised that honest manufacturers want to protect them self? Do you believe only western companies have the right to do so?

каким образом LM2575 касается этого устройства?

Good video. I would like to know more about how you set up your sweep of that xfmr. So are you putting a square wave into the primary of the xfrmer. Also I didnt see the square wave moving with the frequency change. Im trying to see how to hook up my programmable sig gen and digital scope for alignment of IF in radio. Thanks

73 de TA7TUR!

I've a 2D72 and tried now the software in Windows 11. Drivers do not work. ("Hantek2D42AMD64.SYS A security setting is preventing the driver from loading"). Did anybody find a reliable solution? (sane for upgrading firmware). It's strange that Hantek still sells this product with... an outdated software. Thanks!

How do these performer in high quality audio circuits like synthesisers? Is output noise a problem?

Still using my ICE supertester 680r at work. It's more than fifty years old but it does the job like it always did

It is not out of phase, it is inverted.

A side tip: If you use the full rectified sinusoid waveform, you can output an almost sinusoid signal from 80 to 160 MHz - it will be with twice the set frequency. You can use it to test the receiving stages of UHF and FM receivers and similar.

So, it cannot use it's own generator to make bode plots?

can you telle me what the test voltage is? i can imagine the voltage beeing over 6v ac could cause component issues, or measuring in cirquit, over the threshold for diode is no good either

😢brings back fond memories of my childhood days...My dad probably bought one in 1956..(he wrote the date on the inside ) It was another PYE (CAMBRIDGE??)model with a very much similar looking front cabnet... it had the following 8 bands in this order.. MW/MSW/31/25/19/16/13/11 there were 5 controls...starting from left 1st OFF/ON 2nd Volume .... 3rd Rotary tone selector switch..3?/4?... 4th Band tuning... 5th Band selector rotary switch.. In the centre of tuning display @ top was the "MAGIC EYE" tube. besides the magic eye..it was a 5 tube reciever & had an (S.O.T.) sound output transformer... This was our "WORLDWIDE" news & entertainment source right upto the late 80's... some of our favourite & regular "listening" stations.. were...VOA/BBC/radio Ceylon(SriLanka)/radio Australia/radio Kuwait..besides some others occassionally...DW/ TASS(radio Moscow)/ & some far east stations. ...SO we were station hopping through the day..all 7 days in the week.....😊😊😊

the sensitivity really sux on these little things.

You can buy this with two probes for just a few dollars more, so just make sure you choose that option.

Thank you. Excellent tutorial.

Nice review. You've got a new subscriber.

Just found you ! lots of interesting stuff on your channel so I've subbed ! I have a question about this curve tracer, for me the most use one would be apart from the novelty is matching transistors for audio work. Has this got a step generator and is that what the blue banana is, a third terminal for our beloved BLT's ? could you demo its performance with a Transistor.......cheers.

An interesting component and well worth a tryout. Hope you have happy New Year in 2025.

A few things to also mention: If you are working with an input voltage greater than about 10V, it is worth replacing the 1N5819 with an SBR diode. An SBR conducts like an Schottky but doesn't leak much. This chip can also be used to turn an unregulated positive supply into a regulated negative supply. It is useful to parallel multiple capacitors to make the large capacitor values. This makes the impedance lower. It is easy to find "dual inductors" that look a lot like a transformer but really are designed as inductors. You can use this to make low powered parasite supplies along with the main supply output. This can be useful to power a few op-amps in some 3.3V digital system

thumbs down for the unnecessary china hate....usa patent wars..just sayin.

When the number is scratched off it means it was stolen off a product line and resold on their black market which is how the stuff is so cheap. Or it was malfunctioning and then stolen from discard pile to be resold.

The best electronics project I made was a variable AC to DC power supply, in the 1980s.

Thanks for sharing your knowledge. Happy new year.

Beware of cheap fakes of this that don't like 40v inputs and can be just as poppy with high outputs. (Same with cheap Arduino/esp boards many are good to 12v, but it you put one in a car and the charging of the battery gets it above 14v I have seen them (1117 5v regulartor) go short and pop the lot....

Excellent video. Happy New Year!

This is a cool little part, will definitely add some to my order padding list. Would have been interesting to see a trace of the actual pwm output as well as the filtered output.

Best wishes for the new year. Always informative, clear and well delivered. Thank you.

Happy New Year

This is a great part! Well done!

One thing that they could improve is to display somewhere what is the scale of FFT. In theory it easy to just calculate it from "Time base scale", like 2ms -> 1/0,002 = 500Hz, but still, this would be a improvement.

I made an octopus... watching this is see if it might be cool to go up to the next level. I was wondering if it would be possible to take this kit as a starting point and DIY the whole thing - but having sat here and listened to your various frustrations, then - maybe not.

The display goes off after 2 minutes in my device (multimeter mode) no matter what is setup in the options. Is it a bug or a feature?

This is really helpful. With all the features in signal generators, I’m sure there are wide number of special cases … that become obvious to any individual in there speciality field, but that might not be so obvious outside that field. Eg using 2 signal generator adding noise, or adding harmonics, or specific uses of different types of burst modes., More videos on this topic would be wonderful.

First time running across your channel and I thoroughly enjoyed this video. I've always wanted to learn how to use a 'scope, but it's always been so intimidating. Perhaps this unit will be the one that finally makes me take the plunge! Do you have any videos on the basics of using a 'scope? I really enjoy your style.

Hello! my 703s shuts down after 1.5 min and goes into standby, even is set to (Auto off = 10 min) I also tried updating frmw to the latest version v1.4.2 would you happen to know how to fix it?! thanks

Juntek PSG9080 has the ability to fine-tune the internal reference according to GPSDO and although it will never be at the level of a professional device, for an ordinary user the long-term accuracy is fully satisfactory. And if you have a GPSDO module at home, you can calibrate your own devices as needed. Also, a home GPSDO can make a reference for multiple devices in your workshop and thus get the accuracy to a very good level.

You are a blessing my friend..