Dave shows you how to reverse engineer a PCB to get the schematic. In this case the new Rigol DS1054Z oscilloscope.
How does the discrete transistor analog front end and the software bandwidth limiting work?
How do you decode SMD transistor codes?
How does it compare to the old Rigol DS1052E?
Dave also discusses the low voltage ohms function of a mulitmeter, how it’s useful, and how to test your multimeter to see if it will have any issues with in-circuit testing.

http://rigol.codenaschen.de/index.php/Schematics

HUGE SURPRISE inside the new low end $699 Rigol 12bit low noise HDO1000 oscilloscope!
Hacking forum thread:
https://www.eevblog.com/forum/testgear/hacking-the-hdo1khdo4k-rigol-12-bit-scope/

Teardown of the new Rigol HDO4000 12bit ultra low noise oscilloscope

https://www.eevblog.com/forum/testgear/rigol-hdo1000-and-hdo4000-12bit-oscilloscopes-launched-in-china/

https://www.eevblog.com/2022/09/30/eevblog-1503-rigol-hdo4000-12bit-oscilloscope-teardown/

$140 for a 2CH 100MHz 1GS/s tablet oscilloscope?
Review of the $140 FNIRSI-1013D 2CH 100MHz 1GS/s tablet oscilloscope.
Is it too good to be true?

EEVblog #1260 – $70 100MHz Oscilloscope?
https://www.youtube.com/watch?v=SIH48bIUU00

In this electronics basics episode we will be having a look at the biggest mistake you can do when working with an oscilloscope. But I will not only show you how to do safe mains voltage measurements but also show you all the basics when it comes to oscilloscopes. That means I will show you how to choose one, how to do simple voltage and current measurements and finally how FFT works. I will explain passive probes, triggering, voltage & time division, measuring functions, the cursor function, AC & DC coupling and single mode capturing. Let’s get started!

0:00 The big mistake when using an oscilloscope
1:08 Intro
2:02 How to choose a scope?
4:44 Passive probes & scaling factor
5:55 Trigger
6:41 Voltage division
7:11 Time division
7:37 Measure function
7:47 Cursor function
8:19 AC & DC coupling
9:08 Single mode capturing
9:36 Current measurement
10:16 Safe mains voltage measurement
11:37 Differential probe
11:52 Math & FFT

I did a detailed review and teardown of a Hantek DSO2D10 oscilloscope. Check it out on Banggood: https://ban.ggood.vip/Zu2N use coupon code BGd2e0cc for additional savings (expires on 9/30).

00:00 Introduction
03:10 Power on time, features
05:08 Test signal
06:26 System information, it’s Linux based!
07:50 Arbitrary waveform generator, AM/FM modulation
12:23 Waveform editor software
15:30 Keysight Interactive IO, SCPI
16:46 Virtual Oscilloscope software
17:28 Memory depth
20:45 Protocol decoding, triggering capability
24:22 Bandwidth testing
27:31 Rise time measurement
29:15 X-Y Mode, DVM
30:58 Teardown
36:19 Conclusion

By popular request, I did a review and teardown of a FNIRSI 1014D digital storage oscilloscope. You can also find the exact same scope under the Yeapook brand (ADS1014D). Although it is advertised as a 100MHz bandwidth scope, in reality the bandwidth is just at around 30MHz. This along with other issues (e.g. low memory depth, low input sensitivity, display artifacts, etc.) makes it hard to justify getting this scope even with the rock bottom price.

00:00 Introduction
02:45 Functional testing
06:10 Bandwidth measurements
11:31 Rise time testing
12:17 AM/FM modulation, Lissajous figure
13:11 Builtin function generator
14:49 Teardown
16:25 Conclusions

Kannettavista testereistä on puhuttu jo vuosikausia, mutta Tektronix vie idean oikeastaan ensimmäisenä maaliin. Uusi Series 2 -oskilloskooppi on käytännössä tabletin kokoinen, alle 1,8 kiloa painava ja van 38 millin paksuinen täysiverinen mittauslaite.