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Test Equipment / Re: SDS800X HD Wanted Features
« Last post by Martin72 on Today at 09:17:10 pm »Wanted:
Displaying the waveform update rate (as seen on the new Magnova scope).
Has already been heard and judged to be a good feature, but has not yet been added to the list.
Displaying the waveform update rate (as seen on the new Magnova scope).
Has already been heard and judged to be a good feature, but has not yet been added to the list.
3
Test Equipment / Re: Hacking the Rigol DHO800/900 Scope
« Last post by shapirus on Today at 09:16:00 pm »Could you please retry with only CH1 and CH2 enabled?Ideally, every possible combination of more than 1 enabled channels.
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Repair / Re: HP54600B with spike problem with and without signal
« Last post by sacha on Today at 09:13:38 pm »Hi,I agree with everything you wrote 
, I tried to check the address input and data in/out levels, but I saw no apparent defects. I'll try to change the Ram to a faster one.
Can any of you tell me if the ic 1SL7-0001 is available?
thank.
, I tried to check the address input and data in/out levels, but I saw no apparent defects. I'll try to change the Ram to a faster one. Can any of you tell me if the ic 1SL7-0001 is available?
thank.
5
Projects, Designs, and Technical Stuff / Re: One Capacitor Type to Rule Them All? Help?
« Last post by coppercone2 on Today at 09:08:49 pm »This is a crazy idea capacitor construction and sizes are extremely application dependent and the prices vary wildly.
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Projects, Designs, and Technical Stuff / Re: One Capacitor Type to Rule Them All? Help?
« Last post by Solder_Junkie on Today at 09:07:42 pm »You need a binocular microscope, it really helps with 0805 and 0603 sizes
I mostly do ham radio stuff, so I'm thinking that I should just get NP0 caps (or C0G) to be safe, but what about materials? I don't want to switch "materials" every time I turn around (channeling my mother!) -- I just want to buy a big set of, say, NP0 caps and use them for everything: bypassing, front-end filters, crystal filters, coupling, AC, RF, whatever (assuming that physical size can handle the current, of course).
1206 is the smallest that I want to go, as I can barely handle that the way it is.
I am aged 70 and work with 0603 size parts, soldering by hand with a Weller 1010 station. See this video from around 13 minutes in: https://youtu.be/eZtPR8_x0nc?feature=shared
SMD capacitors can work out expensive if you want to hoard a wide variety of types. While I appreciate you wanting to stick with NP0, personally (as a fellow ham home constructor of SMD stuff) I would get a few 100n, 10n and 1n ordinary 50V ceramics. In addition a few aluminium electrolytics, perhaps 10uF, 47uF and 100uF in 25V rating.
I tend to order what I want for a particular project from Mouser, rather than buying a lot "just in case".
73 SJ
7
Metrology / Re: DIY 0.1 to 10Hz Noise Amplifier
« Last post by Andreas on Today at 09:06:48 pm »Hello bobuhito,
most answers (including .pdf schematic) are somewhere here in the metrology section. Either in some LNA or LTZ1000 thread.
(I am too lazy to search for it).
I never measure with a short at the input of LNA. This would give a unrealistic low noise floor.
I always use batteries; formerly NiMh now as my NiMh are ageing and getting "loud" LiIon batteries with a voltage near the reference that I want to measure.
(yes the noise floor is input voltage dependant).
And I always have a battery connected to the input of the LNA to keep the input capacitor under bias since I do not want to wait 1 week for a measurement.
with best regards
Andreas
most answers (including .pdf schematic) are somewhere here in the metrology section. Either in some LNA or LTZ1000 thread.
(I am too lazy to search for it).
I never measure with a short at the input of LNA. This would give a unrealistic low noise floor.
I always use batteries; formerly NiMh now as my NiMh are ageing and getting "loud" LiIon batteries with a voltage near the reference that I want to measure.
(yes the noise floor is input voltage dependant).
And I always have a battery connected to the input of the LNA to keep the input capacitor under bias since I do not want to wait 1 week for a measurement.
with best regards
Andreas
8
Projects, Designs, and Technical Stuff / Re: Design of white noise generator for bathroom??
« Last post by Retirednerd2020 on Today at 09:06:44 pm »I suggest noise cancelling headphones, for her.
9
Test Equipment / Re: Hacking the Rigol MSO5000 series oscilloscopes
« Last post by thorstormlord on Today at 09:04:56 pm »Il.just post here that I did the static IP thing on my scope and the script still didn't work for me. The other method with the local upgrades works fine though sood the script doesn't like your setup you can do the local upgrades as a fall back
10
Projects, Designs, and Technical Stuff / Re: Design of white noise generator for bathroom??
« Last post by Bud on Today at 09:00:34 pm »Maybe watching what to eat and practicing some changes in using the utilities can help mitigate the issue.
Is the concern with the noises experienced outside or inside the bathroom? Installing a noise masking tool inside the bathroom may not be efficient for the outside because of sound propagation attenuation through the wall.
Is the concern with the noises experienced outside or inside the bathroom? Installing a noise masking tool inside the bathroom may not be efficient for the outside because of sound propagation attenuation through the wall.