polarazation's figure

Started by Anonymous in sci.electronics.design10 years ago 6 replies

Forms of polarization ::: Are these forms can be displayed by your Oscilloscope The shapes as a straight line. And spherical ellipse.

Forms of polarization ::: Are these forms can be displayed by your Oscilloscope The shapes as a straight line. And spherical ellipse.


The Simpson 260

Started by John S in sci.electronics.design6 years ago 47 replies

I have many instruments. The most valued and cherished one is the Simpson 260. I can easily do some things with it that is almost impossible...

I have many instruments. The most valued and cherished one is the Simpson 260. I can easily do some things with it that is almost impossible with a DVM, oscilloscope, etc. I hope I never have to do without it.


configure esr for noncharted caps

Started by medusa in sci.electronics.design6 years ago 9 replies

Is there a simple way without oscilloscope to estimate the expected esr of caps that are not on the charts and don't have access to data sheets?

Is there a simple way without oscilloscope to estimate the expected esr of caps that are not on the charts and don't have access to data sheets?


It's not a CA3096 but...

Started by bitrex in sci.electronics.design3 years ago 8 replies

An extra NPN would be nice and the GBW could be better; some of those CA parts went up to 1GHz Ft and they used them for oscilloscope...

An extra NPN would be nice and the GBW could be better; some of those CA parts went up to 1GHz Ft and they used them for oscilloscope front ends and stuff. These are about a buck in quantity @ Mouser


Is this right? 1125MHz 14-bit dual channel acquisition

Started by Fred Bloggs in sci.electronics.design4 weeks ago 35 replies

Just the way they have that written seems funny. But its really...

Just the way they have that written seems funny. But its really cheap. https://digilent.com/shop/zmod-scope-1410-2-channel-14-bit-oscilloscope-module/


Tuned Circuit Selectivity

Started by Cursitor Doom in sci.electronics.design3 years ago 56 replies

Gentlemen, I'm just trying a number of combinations of L and C to find the right values for resonance at around 1.35Mhz. The problem I'm...

Gentlemen, I'm just trying a number of combinations of L and C to find the right values for resonance at around 1.35Mhz. The problem I'm having is that the resonance point is far from clear. It's as if the Q of the components is very low (even though they actually aren't). I'm trying to think of a way to make it more 'peaky' on the oscilloscope display to take the guess work out of ...


SEC Consult SA-20181130-0 :: Multiple Vulnerabilities in Siglent Technologies SDS 1202X-E Digital Oscilloscope

Started by Jim Whitby in sci.electronics.design3 years ago 7 replies

Just got a news flash on this: https://seclists.org/fulldisclosure/2018/Nov/68 Apperantly it uses Telnet for the network connections, Easy...

Just got a news flash on this: https://seclists.org/fulldisclosure/2018/Nov/68 Apperantly it uses Telnet for the network connections, Easy root access to anyone.


HP 1722A

Started by Michael Robinson in sci.electronics.design8 years ago 18 replies

A guy clearing out his deceased father-in-law's basement let me have an HP 1722A oscilloscope. It powers up, and responds to signals. I...

A guy clearing out his deceased father-in-law's basement let me have an HP 1722A oscilloscope. It powers up, and responds to signals. I haven't tested all the functions, but the basic stuff works. I'm thinking of selling it. How much is a working 1722A worth?


Hef's oscilloscope!

Started by Bill Beaty in sci.electronics.design2 years ago 5 replies

What is that thing? (Built into the wall) Early Tek? I can't peel my eyes off it. Darned bouncing 1968 women, Godda Inna way! . Playboy...

What is that thing? (Built into the wall) Early Tek? I can't peel my eyes off it. Darned bouncing 1968 women, Godda Inna way! . Playboy After Dark 8/8/68 . https://www.youtube.com/watch?v=4kAHqIkc0qQ&t=77 (I presume this is the Playboy Mansion? No?)


Oscilloscopes

Started by Anonymous in sci.electronics.design7 years ago 23 replies

Hi I have just started in electronics and have started to think about getti= ng an oscilloscope. I don't have enough money for the $400 digital...

Hi I have just started in electronics and have started to think about getti= ng an oscilloscope. I don't have enough money for the $400 digital oscillos= copes. My family does not have a lot of money and the ones on ebay are stil= l too much expensive. I'm just wondering if anyone has an old analog oscill= oscope that I could have. Thanks :)


PC oscilloscope screenshot sizing

Started by Clive Arthur in sci.electronics.design4 years ago 21 replies

I often put screenshots in documents taken from a PC 'scope. It would be handy if there were some way of setting the window size on the PC to...

I often put screenshots in documents taken from a PC 'scope. It would be handy if there were some way of setting the window size on the PC to something repeatable. Is there some utility for this, or perhaps a Windows 10 feature I'm unaware of? I can't just use full screen as it's enormous and the resulting screenshot has tiny numbers/legends. Cheers -- Clive


sound card based sampling oscilloscope

Started by Glen Walpert in sci.electronics.design10 years ago 3 replies

Looks like a nice cheap hobby project, ~40 MSPS effective sampling rate on repetitive signals with a 96 kSPS...

Looks like a nice cheap hobby project, ~40 MSPS effective sampling rate on repetitive signals with a 96 kSPS soundcard. http://www.analog.com/library/analogdialogue/archives/45-11/soundcard.html


Interesting feature of an inexpensive function generator

Started by Charles in sci.electronics.design8 years ago 15 replies

Hi, I have been using an GW Instek SFG-2110 and find that the TTL output has a fast rise time. It is about 2 ns and this could be useful for...

Hi, I have been using an GW Instek SFG-2110 and find that the TTL output has a fast rise time. It is about 2 ns and this could be useful for oscilloscope bandwidth measurements for instruments of less than 100 MHz. The TTL option seems to be missing on more expensive function generators. Any thoughts?


PC USB oscilloscopes, Hantek 6022BE vs 6022BL

Started by John Doe in sci.electronics.design3 years ago 18 replies

As far as I know, using an oscilloscope for drones, I have absolutely no use for the BL's logic analyzer. But it looks like the inclusion of a...

As far as I know, using an oscilloscope for drones, I have absolutely no use for the BL's logic analyzer. But it looks like the inclusion of a logic analyzer is a huge value. Another concern with the BE is that apparently it is discontinued. Looks ike most of the problems people have with those two oscilloscopes are caused by their inability to use a PC. Just to check my understandi...


Amplifier transistor substitution.

Started by Sylvia Else in sci.electronics.design5 years ago 20 replies

The smoke escaped from my old oscilloscope today. I've determined that it came out of R740, to the bottom right of the circuit...

The smoke escaped from my old oscilloscope today. I've determined that it came out of R740, to the bottom right of the circuit diagram. https://www.dropbox.com/s/9053dnyr0izv88r/XAMP.PDF?dl=0 This is because T711 has shorted out. Not very surprisingly I cannot source a replacement BF472, so I need to find a substitute. This is the final X-axis amplifier, so we're not talking high ...


Phase Noise vs. Jitter

Started by Cursitor Doom in sci.electronics.design2 years ago 45 replies

Gentlemen, I thought these terms were effectively the same thing, but now I'm not so sure. Taking a square waveform of uniform amplitude...

Gentlemen, I thought these terms were effectively the same thing, but now I'm not so sure. Taking a square waveform of uniform amplitude for the sake of simplicity, AFAIAA, if I'm looking at such a wave in the time domain with an oscilloscope and I'm seeing intermittent thickening of the vertical portions of the trace, that's jitter. But if the frequency of the wave is more slowly v...


waveform display in browser

Started by John Larkin in sci.electronics.design6 years ago 70 replies

I'm designing a tachometer box and it will have a web page interface as one way to talk to it. I thought it would be cool to include an...

I'm designing a tachometer box and it will have a web page interface as one way to talk to it. I thought it would be cool to include an ADC so we could display waveforms, too. My software guys here are mostly embedded types so we don't know a lot about Javascript and such. I did a little searching and mostly found things for displaying audio envelope cartoons; I want a real oscilloscope-l...


Unexpected PIC32 behavior

Started by Randy Day in sci.electronics.design8 years ago 13 replies

I'm trying out the SPI module on a PIC32MX150, and I've encountered something I wasn't expecting. The pin selection / module enabling stuff...

I'm trying out the SPI module on a PIC32MX150, and I've encountered something I wasn't expecting. The pin selection / module enabling stuff is done, and I get i/o, but the Slave Select pin only goes 0-1.2v, rather than 0-3.3v like the clock and data pins. I tried a 10k pullup resistor, it stayed at 0-1.2. Nothing is attached to the pins except the oscilloscope. I've hooked up two...


Bitscope (Micro BS05) and 32bit Linux

Started by Johann Klammer in sci.electronics.design2 years ago 4 replies

I got one of those. Today, I tried to set up two oscilloscope probes. (the frequency compensation capacitor) I noticed the following...

I got one of those. Today, I tried to set up two oscilloscope probes. (the frequency compensation capacitor) I noticed the following things in bitscope-dso: when adjusting the cap, the waveshape doesn't change, but the amplitude does. at 250kHz it's almost triangles regardless of capacitor setting. 50kHz looks acceptable. I am also not sure what sort of filter it has and how to turn i...


Rudimentary PC USB oscilloscope?

Started by John Doe in sci.electronics.design6 years ago 26 replies

My main question is about PC USB-based oscilloscopes. The rest of this is specific to my problem(s) and may be overlooked. I'm using cordless...

My main question is about PC USB-based oscilloscopes. The rest of this is specific to my problem(s) and may be overlooked. I'm using cordless drills to power electric bicycles. I have one built. It works but is underpowered. I am building a better one using a DeWalt DCD995. Some nice electronics included in that drill, a stout (very tight turning) brushless motor with a controller. ...