Gents:
First post.
I'm populating a home hobby-lab to support some amusing experiments in 2- photon light-scattering vis Levinthals Paradox. Previous attempts proved unsuccessful. I'm improving test equip all-around. First item is a
digital Oscilloscope ( replacing a data-logger ) : I'm looking at the
Siglent SDS100-series: 4-channel 200-Mhz bandwidth. Will be used to trouble-shoot photo-transistor based detection circuits. Price ~ $700.
I've always used HP/Tektronics or Fluke, but now retired I'm priced out
of the grant-money market. Of-course the Goldilocks freq is 10^15 Hz, but
you have to pray for sub-harmonics vis protein folding. Anyrate what do
you think about the OScope choice ?
On 04/11/18 01:33, will wrote:
Gents:I'm a boat anchor fan myself. Check out eBay for scopes. I've bought
First post.
I'm populating a home hobby-lab to support some amusing experiments in
2-
photon light-scattering vis Levinthals Paradox. Previous attempts
proved unsuccessful. I'm improving test equip all-around. First item is
a digital Oscilloscope ( replacing a data-logger ) : I'm looking at the
Siglent SDS100-series: 4-channel 200-Mhz bandwidth. Will be used to
trouble-shoot photo-transistor based detection circuits. Price ~ $700.
I've always used HP/Tektronics or Fluke, but now retired I'm priced out
of the grant-money market. Of-course the Goldilocks freq is 10^15 Hz,
but you have to pray for sub-harmonics vis protein folding. Anyrate
what do you think about the OScope choice ?
eleven of them there, and have had zero duds. Something in a nice Tek
TDS 544A (500 MHz, 1Gs/s) can be had for under 5 bills.
Cheers
Phil Hobbs
Appreciate your comments. Having used HP/Tektronics/Fluke for 50-years
I'd love a classic-form OScope. However ... I profoundly distrust eBAY merchants ( very sharpsters ) and eBAY payment methods. You are prolly a
much quicker business-man than I am. I prefer to deal direct with manufactures ( my coffee mugs come right from the Vermont potters-wheel
and my light-scattering-cuvettes direct from a small Chinese silicon foundry).
The $200 difference between shyster-Bosco on eBAY and warranted grant- polished paid-delivery + support Siglent is small beans. Too bad Siglent
does not sell a well-priced sine/squ/ramp 25 MHtz function generator and indeed eBAY products never include the cables. Kinda like selling a
kitchen table with no legs, but that's eBAY style.
On Thu, 12 Apr 2018 10:55:56 -0400, Phil Hobbs wrote:
On 04/11/18 01:33, will wrote:
Gents:I'm a boat anchor fan myself. Check out eBay for scopes. I've bought
First post.
I'm populating a home hobby-lab to support some amusing experiments in
2-
photon light-scattering vis Levinthals Paradox. Previous attempts
proved unsuccessful. I'm improving test equip all-around. First item is
a digital Oscilloscope ( replacing a data-logger ) : I'm looking at the
Siglent SDS100-series: 4-channel 200-Mhz bandwidth. Will be used to
trouble-shoot photo-transistor based detection circuits. Price ~ $700.
I've always used HP/Tektronics or Fluke, but now retired I'm priced out
of the grant-money market. Of-course the Goldilocks freq is 10^15 Hz,
but you have to pray for sub-harmonics vis protein folding. Anyrate
what do you think about the OScope choice ?
eleven of them there, and have had zero duds. Something in a nice Tek
TDS 544A (500 MHz, 1Gs/s) can be had for under 5 bills.
Cheers
Phil Hobbs
PH:
Appreciate your comments. Having used HP/Tektronics/Fluke for 50-years
I'd love a classic-form OScope. However ... I profoundly distrust eBAY merchants ( very sharpsters ) and eBAY payment methods. You are prolly a
much quicker business-man than I am. I prefer to deal direct with manufactures ( my coffee mugs come right from the Vermont potters-wheel
and my light-scattering-cuvettes direct from a small Chinese silicon foundry).
The $200 difference between shyster-Bosco on eBAY and warranted grant- polished paid-delivery + support Siglent is small beans. Too bad Siglent
does not sell a well-priced sine/squ/ramp 25 MHtz function generator and indeed eBAY products never include the cables. Kinda like selling a
kitchen table with no legs, but that's eBAY style.
The $200 difference between shyster-Bosco on eBAY and warranted grant- >polished paid-delivery + support Siglent is small beans. Too bad Siglent
does not sell a well-priced sine/squ/ramp 25 MHtz function generator and >indeed eBAY products never include the cables. Kinda like selling a
kitchen table with no legs, but that's eBAY style.
On Thu, 12 Apr 2018 15:56:02 -0000 (UTC), will <willscranton@butchersboulevard.commypanprofile> wrote:SDS2000X_ServiceManual_SM0102X-E02A-1.pdf>
The $200 difference between shyster-Bosco on eBAY and warranted grant- >>polished paid-delivery + support Siglent is small beans. Too bad Siglent >>does not sell a well-priced sine/squ/ramp 25 MHtz function generator and >>indeed eBAY products never include the cables. Kinda like selling a
kitchen table with no legs, but that's eBAY style.
Most of my now antique lab equipment was purchased on eBay: <http://www.learnbydestroying.com/jeffl/pics/home/slides/lab.html>
There's plenty more stored in various corners. I tend to buy low cost
"for parts" equipment, and fix them myself. If I really want to buy something to repair, I buy three of them: <http://www.learnbydestroying.com/jeffl/pics/home/slides/BL-shop5.html> That's one of the benefits of buying HP, TEK, and other name brand
equipment. If you need schematics, manuals, and parts 40 years later,
you can find them. For example, the HP 8640B signal generator is known
for having the output RF power amp get blown up. 40 years later, you
can get replacement pullout:
<https://www.ebay.com/itm/362098534959> <https://www.ebay.com/itm/232157976158>
I could probably build a complete generator from scrap parts found on
eBay. I doubt if you could find repair parts for a Siglent scope even
today. I just downloaded the "service manual" on the Siglent SDS2000X
scope. <https://www.siglentamerica.com/wp-content/uploads/dlm_uploads/2017/10/
No schematics, no parts list, some adjustments, and an assembly drawing showing only the test points.
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