Products > Test Equipment
"MSO" vs DSO + Logic Analyzer - One More Time
Electro Fan:
Ok, I know, "search the forum, search Google, search more". I have tried to search everywhere, but I'm still trying to figure out the best way to go: a DSO and a Logic Analyzer or a "MSO".
And I'm still stuck on "I don't know what I don't know."
So, here is another try:
Is there anyone out there with a Rigol DS1102D or a DS1052D and an Intronix LogicPort who can talk to the relative strengths of the Rigol built-in LA vs. those of the LogicPort? If not, is there anyone out there with a Rigol 1000D series and a LA simlar to the Intronix LogicPort, or an Intronix LogicPort and something similar to a Rigol 1000D series scope?
I'm trying to figure out what I'd be missing with a Rigol 1000D class scope vs. a LA in the Intronix LogicPort class (or vice versa). What I really want is the ability to see the analog wave forms and the digital signals sycnhronized on the same screen. If this can be only done with a "MSO" then so be it. On the other hand, if this can be done with some combination of a scope and seperate LA with some combination of trigger outs and trigger ins, that might be good also.
I just want to figure out a decent entry level to see the relationship between voltage induced sine waves and the corresponding bits. My main use for a while will be Arduino Unos which means relative low clock cycles / low bandwidth requirements. I don't think I will be looking for rare glitches arcoss humongously long periods of time. I think I will be initially working with SPI and I2C so I only need some basic protocol analyzer functions for starters. What I will graduate to next, you folks here have a better idea than me.
Any reason not to just buy a Rigol DS1052D or a DS1102D and get it over with? Or is there some reason to buy a Rigol 2072 and an Intronix LogicPort, or is it a futile to think something useful can be accomplished with less than an Aglient 3000 series MSO, or is there something else along these lines that should be considered?
Thanks for any advice.
free_electron:
' digital signals sycnhronized on the same screen.'
then you need an MSO or a combination of an DSO/Logic analyser.
Even though the logicport is a step above the average bitstreamers like Salae , usbee or 'logic' it is still not a true logic analyser with state and timing analysis or tracing capabilities. Now, neither is that rigol thingie...
I would look for a used 54645D mso scope... or a54622D ( the'D') is key. these things are really good MSO's. a step up is the 2000/3000/4000 /6000/7000 series from agilent.
For real heavy lifting you need a real logic analyser. these machines have capabilities that outstrip any MSO ( in terms of reverse assembly, source tracing and state decoding/triggering ) . a real analyser can by synced to a scope and pull in the data.
My 16702B talks to my infiniuum scope over the network and pulls in data to show in sync on the same screen. it has a special time align box to calibrate the timing between machines. there are even scope cards that plug into the analyser directly.
You can often find used 167xx on ebay for 200 to 300$. Hook up an lcd monitor and keyboard and off you go. these machines have a PA-Risc processor running HP-UX as operating system. the user interface is an X-host. you can even connect from your PC and use the PC as X-server.
Depending on what you need you pick the 'blades'. The main chassis holds 5 and there is an expansion chassis that can hold another 5.
i have even a pattern generator in mine so i can not only measure but also generate, record and play back signals.
16700 : base machine : external monitor 1024x786 needed. . 10 mbit lan
option 003 : add graphics memory to pump to 1600x1200
16702a : same machine but with builtin monitor ( 800x600) and keyboard . external cd drive needed for software update (scsi). 100 mbit lan
16702b : 1024x768 touchscreen , built in cd drive ( scsi). 100 mbit lan and webserver
all machines can run a standard vga screen in 1600x1200
the user interface looks like windows 3.11 but is HP-UX.
latest software is free for these machines. get it from agilent ftp site, burn image on cdrom and boot the installer.
the machine has a 10 gigabyte scsi drive. the hp-ux kernel sits in flash rom so you can't brick this unix. only the X environment and application is loaded from harddisk. even if you fry the harddisk you can still boot into hpux and launch the installer.
Electro Fan:
--- Quote from: free_electron on May 05, 2013, 03:59:31 am ---' Even though the logicport is a step above the average bitstreamers like Salae , usbee or 'logic' it is still not a true logic analyser with state and timing analysis or tracing capabilities.
--- End quote ---
On the Intronix site it says:
Timing mode sample rate: 1KHz to 500MHz (uses internal clock)
State mode sample rate: 0 to 200MHz (clock provided by circuit under test)
- they seem to think their product supports both timing mode and state mode, no?
nctnico:
IMHO you are better of with an MSO. An MSO covers about 99% of what you'd use a logic analyser for. I can't recommend the Logicport due to its short memory (even with 'compression').
djsb:
--- Quote from: free_electron on May 05, 2013, 03:59:31 am ---' digital signals sycnhronized on the same screen.'
then you need an MSO or a combination of an DSO/Logic analyser.
Even though the logicport is a step above the average bitstreamers like Salae , usbee or 'logic' it is still not a true logic analyser with state and timing analysis or tracing capabilities. Now, neither is that rigol thingie...
I would look for a used 54645D mso scope... or a54622D ( the'D') is key. these things are really good MSO's. a step up is the 2000/3000/4000 /6000/7000 series from agilent.
For real heavy lifting you need a real logic analyser. these machines have capabilities that outstrip any MSO ( in terms of reverse assembly, source tracing and state decoding/triggering ) . a real analyser can by synced to a scope and pull in the data.
My 16702B talks to my infiniuum scope over the network and pulls in data to show in sync on the same screen. it has a special time align box to calibrate the timing between machines. there are even scope cards that plug into the analyser directly.
You can often find used 167xx on ebay for 200 to 300$. Hook up an lcd monitor and keyboard and off you go. these machines have a PA-Risc processor running HP-UX as operating system. the user interface is an X-host. you can even connect from your PC and use the PC as X-server.
Depending on what you need you pick the 'blades'. The main chassis holds 5 and there is an expansion chassis that can hold another 5.
i have even a pattern generator in mine so i can not only measure but also generate, record and play back signals.
16700 : base machine : external monitor 1024x786 needed. . 10 mbit lan
option 003 : add graphics memory to pump to 1600x1200
16702a : same machine but with builtin monitor ( 800x600) and keyboard . external cd drive needed for software update (scsi). 100 mbit lan
16702b : 1024x768 touchscreen , built in cd drive ( scsi). 100 mbit lan and webserver
all machines can run a standard vga screen in 1600x1200
the user interface looks like windows 3.11 but is HP-UX.
latest software is free for these machines. get it from agilent ftp site, burn image on cdrom and boot the installer.
the machine has a 10 gigabyte scsi drive. the hp-ux kernel sits in flash rom so you can't brick this unix. only the X environment and application is loaded from harddisk. even if you fry the harddisk you can still boot into hpux and launch the installer.
--- End quote ---
Is it feasible to still buy parts to repair these? There is at least one on Ebay that is faulty (one listed as power supply fault).
Do you have any tips on what to look out for or avoid when buying. Any user or service manual available anywhere (I'm guessing Agilent will have them for download?)
David.
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