Products > Test Equipment
Bode Plot Computational Time for various DSOs
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mawyatt:
For a given set of Bode parameters, say 100Hz to 100KHz, dec sweep with 20pts/dec, dynamic scaling ON, how do the various DSOs compare time-wise?

Our particular interest is with the various Siglent flavors, like the SDS2000+P, SDS2000HD and SDS6000, but also interested in how other brands perform, including firmware level.

This might be a good means to keep tabs on the various firmware updates also, as the OEMs improve things. Know that different algorithms will play into this, some with very good frequency selectivity will require more computational load, thus longer timeframes, so not exactly an ideal comparison and tabulation.

Also know a few don't feel the DSO Bode Plot capability is useful, very likely because they don't have, nor experience, with a DSO with a good Bode Plot implementation, so please refrain from commenting. Our interest is from those that actually use and value this feature, as we've found it quite useful indeed, albeit slow, so we view relative timescales useful information!!

Best,

Edit: Added for SDS2102X+ and SDS2104X+  Parameters: Simple, Single Sweep, Decade, 100-100KHz, 20 pts/dec, Int AWG

AWG output to CH1 with BNC cable, another BNC to BNC cable from CH1 to CH2.

SDS2102X+  HW 02-08   FPGA 2021-07-16   U-OS 5.0   SW 1.3.9R6      Time   1:10

SDS2104X+  HW 02-04   FPGA 2022-04-06   U-OS 5.0   SW 1.5.2R1      Time   1:45
Martin72:
Hi,

For the HD I can do it maybe tomorrow, for the X+ next week at work and for the 6000....I´m out... ;D
Then finding rigol mso5000 and keysight users...
Lecroy didn´t have bode, tek ??
GwInstek, Hantek, Micsig, Owon ???
nctnico:
RTM3004: 12 seconds
BTW, I also played around a bit with the SMD test fixture to repeat the test with the capacitors (1pf and 1nf), and on the RTM3004 the results show similar accuracy.
Martin72:
What did you use as a DUT ?
balnazzar:

--- Quote from: Martin72 on November 07, 2022, 04:45:10 pm ---GwInstek, Hantek, Micsig, Owon ???

--- End quote ---

No FRA on those, AFAIK.
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