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Is Lecroy WaveSurfer 64Xs upgradable??

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nathankwan:

--- Quote from: lollokara on October 23, 2023, 05:37:40 pm ---My acquisition board clearly states the frequency and sampling speed (like written on the board not via software) so what I’m saying is that this instrument do not offer “bandwidth” upgrades like rigol or others but just decoding packs or other.

--- End quote ---

Yesterday out of curiosity I talked to the seller again and had him shown me a short video of the sample dots(not vectors) at 1ns/div with all 4 channels on, and suprisingly all 4 channels have 5 sample points per division, suggesting this IS a simutaneous 5GS/s sampling scope (or acqusition card). Those dots didn't seem to be the result of some interpolation (randomly hopping).

according to the datasheet, only WS104MXs has 5GS/s on all channels, could it be someone switched out the 104MXs acquisition board and pluged it in the 64Xs? Is that even possible?

lollokara:
No idea really...

nathankwan:
I met some guy at yahoo groups and learnt that (m)xs/i series acq board all have the same hardware design (therefore capability), so 64xs should has the same acq board as 104mxs. I believe the seller has hacked the eeprom to let xstream software believe it's operating on a 104mxs, therefore unlocking some of the sampling capabilities.
However 104mxs can do interleaved sampling on less than 2 channels to achieve 10GSps, which I persume is coordinated by the fpga in between the adcs, whose configuration cannot be hacked, so the machine thinks it's a 104mxs, but not all features can be unlocked.

I begun to think 1kusd is worth a try, however when I got back, the scope is already sold... :-//

darkstar49:
there's no black & white answer...

The Xs has had 5 generations (Xs without LBUS, Xs with LBUS, Xs-A, Xs-B with PS/2 ports, MXs-B without PS/2 ports).
To my knowledge, Xs and Xi shared the same h/w platform.

I think 2.5GS/s for a 64 models only existed for models without LBUS (serial < LCRY0310xxxxxx). 104 models had the same acquisition h/w (as a 64), but... the FE board was physically different (a bit wider, leading the power button to become rectangular, and not square), and attached differently, so the acquisition board for the 104 (and also 204 for the Xi) was physically different from the acquisition board on the 24, 44 and 64 models.

edit: my bad, not really familiar with the Xs, it was indeed 4 x 2.5GS/s, which could be interleaved to 5GS/s on the 104Xs. No clue whether this was a software-based limitation or if the ADCs were indeed different from those on the Xi series ?

So, to come back to the original question: no, the 64Xs is NOT upgradeable (as for the bandwidth).

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