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Rigol MSO 5000 hardware/software revisions
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typoknig:

--- Quote from: NoisyBoy on March 17, 2020, 04:35:37 pm ---Hi all, an interesting finding to share with you.

If you follow the readme file in the latest 02.03 firmware Rigol released quickly after 02.02, probably there is little to no reason for doing another upgrade for most users.  However, I found the 02.03 update fixes a couple issues that are not documented in the readme file:

1. At least in my case, it fixes the problem with Auto randomly turning on channel that have nothing attached.  I have seen channel 2 (rarely), and channel 3 (almost always) turning on and display traces of noise.  Self-cal does not help, but after applying the fix, the problem is gone.  I have not been able to recreate it, when I press Auto, channels without input no longer comes on.

2. As sb42 had shared, when you press Auto, you sometimes get an intermediate image of other channels flashing on the screen for a moment, before it settles on the final screen.  This problem is also gone, there is no momentary flashing of random channels.

These are important fixes for the new bug introduced in 02.02, but unfortunately in Rigol fashion, the fix documentation did not fully describe what it fixes. 

I hope you will find this tip useful, and perhaps more owners can test it out so we have more than a sample of 1.

And a big thank you for mabl for pointing out the change in the FPGA and appEntry, his effort prompted me to test out the 02.03 firmware even though Rigol did not mention these hidden fixes.

Good luck and stay healthy.

--- End quote ---

Regarding your second point, I did still see this problem in the 00.01.02.00.03 firmware when performing my tests. It didn't happen often, maybe like 3 or 4 times through all my testing. When it did happen it was always channel 1 that flashed.
Sighound36:
Hi NoisyBoy

I have checked both the 5 & 7000 scopes this morning, zero issues with the channel turning on and they are all running the latest FW.

On the 8000 noise (full bandwidth 2Ghz +) open port, 50Ohm setting No high resolution (normal acquisition) or precision settings 200ps on the HTB, average noise on channel was 322uV.

If you switch on the 20Mhz BM limit, high resolution and precision you obtain on average around 80uV, the Wavepro 254 is around 44uV with the ERCS in use @ the same 20Mhz BW limit and open port

NoisyBoy:
Hi Sighound36 and typoknig, thank you for the input and datapoint. 

I’ll have to turn on the BM limit and see how it affects the noise floor, I meant to do that but forgot, my test was run with full BW.  If it makes a meaningful reduction, reducing the BW could be an useful trick for those who needs a lower noise floor for low signal level measurement.
UA3MQJ:
Hello, all!
I finally got an oscilloscope today,
Model Rigol MSO 5072 (Max BW:70M)
Firmware: 00.01.02.00.03
Hardware: 01.01.000
Boot: 2018.06.27
Build: 2020-02-26 17:47:28

Interestingly, the set included probes at 350 MHz - Rigol PVP2350
NoisyBoy:
Enjoy your scope.  That is the standard probe Rigol sends out with the MSO5000 scopes, they are all 350 MHz probes.

This costs Rigol more, but it is a nice perk for owners of an upgradable scope.  They could have saved some money to ship the lower bandwidth probe but chose to go the more generous route, excellent move on their part to motivate owners to upgrade bandwidth with no hardware changes or buying four new probes. 

Some other brands requires you to upgrade all your probes when you upgrade the bandwidth, kudos to Rigol for doing the right move while still keeping the scope affordable.
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