Products > Test Equipment
New Rigol DS1054Z oscilloscope
TurboTom:
--- Quote from: ebastler on August 05, 2019, 04:26:13 pm ---
--- Quote from: Karel on August 05, 2019, 03:23:03 pm ---
--- Quote from: TurboTom on August 05, 2019, 01:43:05 pm ---Anyway, the owners buy a 50MHz scope, convince it to believe it's a 100MHz version and then want to use it up to 150+MHz? Sounds weird... ;)
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Don't you think the DS1054Z and the DS1104Z share the same hardware and that, by using a software key the artificially limited bandwidth can be upgraded?
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I understood TurboTom's comment as just stating that us DS1054Z owners are a greedy bunch. ;)
Buy 50 MHz, cheat your way into 100 MHz, then hope to get 150 MHz and beyond... 8)
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Exactly! >:D
P.S. Surely it's the same hardware, that has been sorted a long time ago.
Mr. Scram:
--- Quote from: bd139 on August 05, 2019, 05:16:43 pm ---Indeed. That is my biggest expectation for the MSO5000 is something proportionately for nothing :)
I wish they’d hurry up and fix the bugs
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The MSO5000 is frustrating. It's so close to absolutely crushing anything out there yet the slow UI and unsophisticated case design are letting it down. I have the feeling that the difference isn't even very significant in terms of NRE and manufacturing.
bd139:
That was exactly the opinion I had on the thing when I played with it as well.
David Hess:
--- Quote from: TurboTom on August 05, 2019, 01:43:05 pm ---David -
your assumption regarding the input amplifier getting close to saturation at higher input levels (or encountering problems because of its limited slew rate) sounds reasonable, but it doesn't actually appear to be the case. I just re-checked the bandwidth in the high sensitivity range of my DS1000Z at a setting of 5mV/div with an input signal level of round about 40mVpp.
If your assumption would be correct, I'ld expect a noticably higher bandwidth than with the scope set at 330mV/div, just before the relay switches in the additional analog divider, and fed with an input signal of 1.5Vpp (that's the maximum my SDG6000X will provide with the additional 50 ohms terminator at up to 350MHz). Actually, the bandwidth even appears to be a little higher at the higher input level.
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So it seems something else is going on although I do not consider that an improvement but rather a mystery.
Dave's reverse engineered schematics show some things which may be related to your test results but I have my doubts that the schematics are completely accurate; they show some odd things.
At some point maybe I can get ahold of one and test it myself.
t_i_t_o:
--- Quote from: t_i_t_o on August 01, 2019, 07:38:31 pm ---Continuing my test https://www.eevblog.com/forum/testgear/new-rigol-ds1054z-oscilloscope/msg1109785/#msg1109785 with the same source signal i.e. the 100MHz SDRAM clock of the STM32F769 discovery board, now testing with a 500MHz 8pF Tek probe, it turns out my lovely Rigol has over than 300MHz bandwith (1.3 ns rise time as seen) :)
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Just to put some oil in the fire, here is the same signal, same Tek probe, but seen with 1.5GHz 8GS/s HP infinium. So compared to the rigol, we see a peak at the beginning of each pulse, where this peak is observed i.e. after the front. On rigol is at the end of the pulse - before the front. Any explanation? Bad interpolation?
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