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General Chat / Re: Ditching Windows at home [Linux advice needed]
« Last post by free_electron on Today at 05:39:30 am »
if (it_runs("Altium Designer 19" , and "solidworks" and "Photoshop" and "Premiere" and "Illustrator" and "Indesign" and "Rhino3D"))
else {;}

there. there's a list of stuff i use daily (and have the licenses for). As long as Linux can't run any of that, it will not be my prime OS.
I do use Linux , but not on desktop (fileserver) and not installed by me. (factory install). I have no gripes ,as long as it works.
But on a desktop install.. There are just too many flavors , different installers, this runs here but not there ... urgh ...
Test Equipment / Re: Test Equipment Anonymous (TEA) group therapy thread
« Last post by bd139 on Today at 05:37:06 am »
Which is why if you want to fuck up the in-laws’ Christmas dinner a well timed fart can ruin the reputation of the big turkey reveal instantly plus the bolstering comment of “that smells a bit weird”  :-DD
Test Equipment / Re: Tektronix TDS3034B
« Last post by MarkL on Today at 05:33:51 am »
You do not need the battery.
Test Equipment / Re: Spectrum Analyzer - Rigol DSA815
« Last post by ted572 on Today at 05:31:11 am »
Remote Control for all of the 'DSA700/DSA800 Series' Spectrum Analyzers. Especially nice for basic control, and especially monitoring the DSA on a PC, and really awesome with a large external LCD Display attached to the PC.

I suggest trying Peter Dreisiebner's (EEVblog'er 'PeDre') 'Rigol DSA800 Remote Control LAN/USB' that is available at: (English language), or (German language).

This is a Portable program, meaning that you simply run it (from any directory, the desktop, USB drive, etc) and it works directly without requiring any installation, or its making changes to the Windows Registry. The only preparation you need to do on the PC is to add a Win USB driver 'Zadig v2' available at This USB driver is required for any of Peters Dreisiebner's programs. It isn't required for LAN, although I prefer USB, seems faster/easier to me, and the driver is easy to install.

I use the program with Windows 10 and it is great. I want to point out that this program has not been fully completed, and it may never be (?), so there are functions that are not available, such as Marker, Measurement, Detector, BW, Tracking Generator, SSC, and possibly a few others. But don't be too concerned, because you can temporarily set 'Remote' - Off, 'Select Trace' - Stop. Then press 'Esc' on the DSA, and make the any desired SA selection changes manually (via Front Panel). Then set the 'DSA800 Remote Control' to 'Remote' - On, and 'Select Trace' - Run.  This sounds more complicated than it actually is, and once you have tried it I think you will agree.

Note that this program also provides some very nice options. i.e. 1.) Spectrogram/Waterfall Display under its normal SA display. 2.) Cross-hair (cursor) display for the SA Remote screen's display cursor. And as standard, a nice presentation of the current configuration, etc.

You may find a couple of bugs in the program, although if so you will learn how to either avoid, or recover from them quickly. I think you will agree that this program is awesome for monitoring the SA on your PC, or better yet with a large screen LCD monitor attached to the PC.

This is a Rigol thread for the DSA815 family (specifically here about DSA705 - DSA875).  So please don't tell me/us about other SAs available out there that can, or do use a external LCD Display with, or without a PC. 
Beginners / Re: Another one bites the dust, ESD killed IC.
« Last post by exe on Today at 05:30:58 am »
After reading some sccary articles on esd I opened my wallet and bought a static meter. No, not new, but something from ebay. Unbelieavable cheap actually, just $70 or so.

I'm not sure how to properly test it. I thought my lab is a bad place (in terms of esd), but my measurements show just 0.08kV of potential difference. Imho too good to believe. But when I put on rubber flip flops and wipe them on the mat under my chair, it shows 0.7-0.8kV. Does this mean my esd meter actually works? I don't really care about precision, but I want to know if it's above some hundreds of volts. That's bad for fets :)

In my lab I have wooden floor, a typical office chair, a plastic mat under it, a typical ikea table and a cutting mat from China. Not sure if I have proper grounding, but if I rub my clothes and then touch tip of my soldering iron I get an electric shock. Hope this means that the tip is grounded and I have a proper ground/earth in mains. Probably, a lot of factors influence esd, most noteably humidity and clothes. My observation is it's better to avoid synthetic clothing.
Test Equipment / Re: DSOX1102G segmented memory?
« Last post by maginnovision on Today at 05:28:25 am »
Just looks like your sample rate took a massive hit. Typically you turn the timebase down to see what you want, then use segmented mode to get many different captures. You don't, especially on a scope with so little memory, want to pull the timebase out and run in segmented mode. So you'd want to do 20us and then segmented for potentially best results. Then you should get multiple high detail captures as opposed to your low detail long timebase + zoom. That'll get you the most bang for buck out of the memory you have.
An Arduino can easily do this - use two PWM channels and change the PWM duty cycle to slowly create the sine waves in the two channels.
Put a simple RC filter on each channel to smooth out the PWM to a nice, clean, slowly changing voltage to drive the scope.

Good point, I don't know what kind of specs the op requires though in terms of distortion.
I suggested an op-amp-based quadrature oscillator as a simple solution (and that gives an opportunity to learn for those that didn't know this topology), but if the requirements are not too stringent and the OP is familiar with MCUs, PWM would indeed be a very decent solution and pretty low-cost too. For signals up to a few Hz, you could use PWM at a few tens of kHz while still keeping a good resolution and requiring only simple RC filtering. Would be a lot more flexible than the above analog solution as well.

Today I posted some cool updates:
First the possibility of merging calculated specifications  with schematic ones.
Showed in this thread:
Second the possibility to define numerical specifications as a range.
So now it is possible to match with resistor values from 10k to 12k, with capacitors larger than 1000uF. etc.
In this way more or less of matched components will popup in the report. This helps making decisions about which component to actually use - and where to find them.
Test Equipment / Re: Test Equipment Anonymous (TEA) group therapy thread
« Last post by tggzzz on Today at 05:21:45 am »
Evidently, after a little Guugling, this is because different areas of your tongue sense different types of flavor,

Not true, to any useful extent.

and half the tastebuds on my tongue are numb.

Quite possibly.

Don't forget that a very significant component of "taste" is actually "smell".
Test Equipment / Re: Tektronix TDS3034B
« Last post by Hydrawerk on Today at 05:20:55 am »
You might need a TDS3000B Series User Manual Manual.
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