Home
Help
Search
Login
Register1
RF, Microwave, Ham Radio / Biquad yagi design?
« Last post by cadr on Today at 01:45:03 am »Does anyone have any references to designing Biquad Yagi antennas?
Recent Posts
2
Test Equipment / Re: Siglent SDS2000X Plus - Bugs / Missing Features / Feature Requests
« Last post by tautech on Today at 01:42:07 am »I'm into the habit of winding back brightness to 80%.......for no good reason other than not needing full brightness.
3
Beginners / Jutter calculation ?
« Last post by GigaJoe on Today at 01:40:19 am »I'm right ?
Jitter 1.5 nS
or it should be divided in 2 -- 750pS
4
Other Equipment & Products / Re: What's the highest magnification you use on a microscope and why?
« Last post by coppercone2 on Today at 01:39:42 am »yeah its for 3d objects what I mean is if you use a stereo microscope and then you get a high zoom one (in the 1000$ range) it gets worse the more you go
I think its extremely useful. i mean you either can see it or not see it. with how small everything got, you basically won't say that its a waste of money
100x lets you look at 1 number on a penny. thats still not that small. for really looking at a 0402 part its not like its a bad buy
You just won't see the problems without zoom. see no evil there is no evil?
but there is a problem, the rail microscopes are god damn huge
I think its extremely useful. i mean you either can see it or not see it. with how small everything got, you basically won't say that its a waste of money
100x lets you look at 1 number on a penny. thats still not that small. for really looking at a 0402 part its not like its a bad buy
You just won't see the problems without zoom. see no evil there is no evil?
but there is a problem, the rail microscopes are god damn huge
5
Buy/Sell/Wanted / Re: WTB: Wire bonding equipment and consumables
« Last post by bondingwedges.com on Today at 01:35:30 am »Hello, we could custom and manufacture most conplicated wire bonding tool
any interest, please visit https://www.bondingwedges.com/
any interest, please visit https://www.bondingwedges.com/
6
Test Equipment / Re: Siglent SDS2000X Plus - Bugs / Missing Features / Feature Requests
« Last post by BillyO on Today at 01:34:59 am »I've replaced a a large number of them in flat screen televisions. LED's don't last as long as it is commonly believed.So have I, but indeed in TVs, especially the cheap ones. they (can) overdrive them for brightness (which people seem to abuse). There's no excuse for that in a scope screen where you are viewing a subdued image and from a meter distance or less.
WoD
Actually, what I replace most in TVs are capacitors in the power supplies. Again, mostly in the cheap ones.
7
Other Equipment & Products / Re: What's the highest magnification you use on a microscope and why?
« Last post by bondingwedges.com on Today at 01:31:19 am »I fully agree that for soldering and similar fabrication, moderate magnification is adequate. When it comes to failure diagnosis, the need to identify tiny cracks or voids may require magnifications without limits, including the use of electron microscopes. Additionally, in the past, when manual wire bonding was still common, magnifications within those ranges were indeed useful.
8
Microcontrollers / Re: Has anyone used ASAN & MSAN, and relevance to embedded arm32
« Last post by ataradov on Today at 01:30:14 am »Asan is much faster and easier to use than Valgrind. But it won't show much if the stack uses one big allocation and then uses allocated chunk for the custom allocator. It will catch gross out of buffer access, of course.
9
Beginners / Re: Quickly Triggering Sensors - need an oscilloscope? what specs? (AU)
« Last post by DimitriP on Today at 01:28:24 am »Oscilloscopes are for displaying signal waveforms, not creating them.
At least add that this is a job for a pulse generator or a fancy function generator and save me some typing
https://www.edn.com/create-short-pulses-with-a-function-generator/
10
Test Equipment / Re: Siglent SSA 3021X... Ooops
« Last post by tautech on Today at 01:21:11 am »Hi,Sanity check:
I think I accidentally overloaded the input to my SA one too many times. My input impedance is no longer 50 Ohms. It still functions sortof.
I took the input board out and started looking around. I saw a 49R9 resistor which I assume is the termination resistor, it actually measures fine. I it looks like there are some clamping diodes on the input path and they seem fine. the input cap measures at 1uF, seems OK. Nothing looks like it got toasty.
The first IC in the input path is U1 a 956p, the 49R9 resistor is after that component in the path. Makes me wonder if that is the part I damaged.
I can't find any info on what that part is, anyone here know? Has anyone found schematics for this SA?
After some research, I believe the part is a GaAs MMIC. Still can't find a datasheet for the 956P to be sure.
Thanks
Joel
Preset.
Connect TG to RF IN and apply -20dB TG signal.
Sweep should be at a -20dB level.
Post screenshot.