Products > Test Equipment
Siglent SDS1000(X) / SDS2000(X) or LeCroy WaveAce (Blackfin) hacks?
markus_jlrb:
FYI,
I can confirm the mod described by tautech extend the BW above 300MHz.
For my model SDD2204X only one cap is mounted nearby the AD8370 ic
in front of pin 8 and 9. This one cap I had desoldered today.
The 3dB (voltage) BW is located at 330MHz.
10dB BW reach the 70cm ham band at 440MHz. (50mV/div) of a 1Vpp
signal.
I have attached some pictures measured with my DSO.
Markus
PS.: The 500MHz signal is passing a 3dB splitter to a second scope
to compare the sigs. Means that the 316mV from the SMY01 has to be
devided by 0.707.
tautech:
--- Quote from: markus_jlrb on August 17, 2018, 07:23:40 pm ---FYI,
I can confirm the mod described by tautech extend the BW above 300MHz.
--- End quote ---
FYI
So there is no confusion, the waveforms I have posted are from factory SDS2304X, unmodified in any way.
The signal amplitude/s in screenshots are either 1V or 100mV p-p so roll off can easily be seen.
The screenshots were not taken in one session.
markus_jlrb:
Sorry tautech,
It was the post from KeBeNe and his mod.
But good to know that the dso BW is comparable
with the factory tuned.
Markus
tv84:
--- Quote from: markus_jlrb on August 17, 2018, 07:23:40 pm ---The 3dB (voltage) BW is located at 330MHz.
10dB BW reach the 70cm ham band at 440MHz. (50mV/div) of a 1Vpp
signal.
--- End quote ---
Cool!
And, if I'm successfull in my investigations, soon you'll all be able to reclassify the scopes to the SDS2304X category (to match it's newer HW capabilities).
I think it's just a magic byte that needs to be changed...
KeBeNe:
Here is my measurement with 100mV, -3db point and 500Mhz.
@ tv84, that would be great and then all the options, have all bought up on PAS, I would like to have them
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