Is the MSO from Rigol and Siglent a timing analyzer or a state analyzer?

[pascal_sweden]

Is the MSO from Rigol and Siglent a timing analyzer or a state analyzer?

Or is it both a timing analyzer and a state analyzer?

https://youtu.be/fez6GqI6yxs?t=54

Timing analyzer:
Logic analyzer that relies on asynchronous sampling.

State analyzer:
Logic analyzer that uses the system clock of the Device Under Test for sampling.

[tautech]

Is the MSO from Rigol and Siglent a timing analyzer or a state analyzer?

Which MSO, there are 2 series.

[pascal_sweden]

I like to know this for the following series:

Rigol:
MSO1000Z series (or DS1000Z Plus series with LA option)
MSO2000A series

Siglent:
SDS1000X series (LA option)
SDS2000X series (LA option)

[smarteebit]

Is the MSO from Rigol and Siglent a timing analyzer or a state analyzer?

Or is it both a timing analyzer and a state analyzer?

https://youtu.be/fez6GqI6yxs?t=54

Timing analyzer:
Logic analyzer that relies on asynchronous sampling.

State analyzer:
Logic analyzer that uses the system clock of the Device Under Test for sampling.

Absolutly timing analyzer. From the pin definition of their logic probe you can not find any clock. Not only Rigol and Siglent, but also Keysight and LeCroy do like this. I don't understand why they can not support an extra clock input.

[Wuerstchenhund]

Absolutly timing analyzer. From the pin definition of their logic probe you can not find any clock. Not only Rigol and Siglent, but also Keysight and LeCroy do like this. I don't understand why they can not support an extra clock input.

Because MSOs tend to use multi-bit ADCs running at a fixed sample rate to a common clock source to keep the overall design simple.

Besides, many Keysight Infiniium scopes and all LeCroy WaveRunner/WavePro/WaveMaster scopes can recover the clock from the data pattern for a wide range of busses.

[EEVblog]

Absolutly timing analyzer. From the pin definition of their logic probe you can not find any clock. Not only Rigol and Siglent, but also Keysight and LeCroy do like this. I don't understand why they can not support an extra clock input.

Because they are not designed to from a system point of view, it would complicate the whole sampling design. Synchronous sampling is not often required these days, and if you do then you are usually working on leading edge stuff that would require a proper logic analyser.

[Orange]

Absolutly timing analyzer. From the pin definition of their logic probe you can not find any clock. Not only Rigol and Siglent, but also Keysight and LeCroy do like this. I don't understand why they can not support an extra clock input.

Because they are not designed to from a system point of view, it would complicate the whole sampling design. Synchronous sampling is not often required these days, and if you do then you are usually working on leading edge stuff that would require a proper logic analyser.

Back in the old days (80's) state analysers where also used as software debugger, eg the HP1630G was used for this. There were disassembles available for almost all major uPs like the 6800, 8085, 68000.... I  worked with the 1630D, and was happy with the 1kByte ! memory. We could also do protocol decoding (RS232 and GPIB) by means of a separate bulky POD adapter, those where the days :-)
So you don't hear me complaining about having to less memory on a MSO2072A scope......

[Electro Fan]

A little bit off topic, but if someone would like a logic analyzer that supports state mode in addition to timing mode, here is one to consider:

http://www.pctestinstruments.com/

34 CHANNEL LA1034 LOGICPORT LOGIC ANALYZER 

     500MHz Timing-Mode (Internal Clock) 
     200MHz State-Mode (External Clock)   
     Advanced Multi-Level Triggering 
     Real-Time Sample Compression 
     +6V to -6V Adjustable Logic Threshold 
     CAN, I2C, SPI, RS232, 1-Wire and more 
     Built-in 300MHz Frequency Counter 
     USB 1.1 and 2.0 Compatible
     Sample buffer: 34 x 2048 samples
     Maximum input: +/-40 volts DC, 15 volts peak-peak pulse amplitude

[nctnico]

For the money of a Logic port you can also buy an older Tektronix or HP logic analyser which have much deeper memories. BTW I have come across some oscilloscopes which had an external clock function (IIRC Iwatsu and/or Yokogawa).

[Wuerstchenhund]

BTW I have come across some oscilloscopes which had an external clock function (IIRC Iwatsu and/or Yokogawa).

Some of the more expensive LeCroy scopes (i.e. WavePro and up) allow an external sampling clock but I don't think it suitable for asynchronous clocking for the MSO part.