No need to fill in any forms, here you can download the firmware directly from the Chinese Rigol website:
https://rigol.com/Support/SoftDownload/3
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)
It also varies with signal level and volts/div setting which indicates that something uncouth is going on.
It also varies with signal level and volts/div setting which indicates that something uncouth is going on.
It also varies with signal level and volts/div setting which indicates that something uncouth is going on.
I think the problem is due to not zooming to maximum zoom. The DS1054Z does all calculations using "on-screen" pixels so for most accuracy in things like rise times you need to zoom in on the area of interest.
It also varies with signal level and volts/div setting which indicates that something uncouth is going on.
I think the problem is due to not zooming to maximum zoom. The DS1054Z does all calculations using "on-screen" pixels so for most accuracy in things like rise times you need to zoom in on the area of interest.
That has an effect on accuracy but reports of bandwidth vary over more than a 2:1 range. Some are more than 3:1. The DSOs I have used have no problem making accurate edge measurements over a 10:1 range in displayed signal amplitudes. The shape of the waveform should not vary with amplitude.
Like we have discussed in the past, I suspect one of the amplifier stages suffers from slew rate limiting causing saturation or cutoff which also explains the odd 10 nanosecond recovery time under certain conditions.
-3dB point is between 130 and 140 MHz. Period. Measured with frequency sweep from a siggen, 50 OHm pass trough terminator scope side .
The only way.
Actually, that doesn't reflect the complete situation: The DS1000Z has two physical, relay-switched sensitivity ranges in the input voltage divider. Further sensitivity adjustments are arranged via the internal digital gain modules in the HMCAD1511 ADC.
As long as the high sensitivity range is selected (this means a less than 330mV/div true input sensitivity), the mentioned figures are correct. But if you change the sensitivity to 335mV/div or above and thus select the low gain input configuration, the 3dB bandwidth increases to somewhere around 220MHz. Of course, this test requires a generator that's capable of some decent output amplitude since the use of a terminator at the scope input is mandatory at these frequencies.
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...
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...
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?
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...
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...
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?
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...
Indeed. That is my biggest expectation for the MSO5000 is something proportionately for nothing
I wish they’d hurry up and fix the bugs
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.
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)