Products > Test Equipment
Re-enabling options on an Agilent DSO81204A?
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swperk:
Sounds like you're making good progress! I didn't see an option for low speed serial in the options list I got from Agilent/Keysight. Right now the scope is down while I clone the hard drive to an SSD, but once it's all put back together I'll let you know if the high-speed also does low-speed (I assume it would, but might as well make sure). Thanks!
swperk:
Turns out that low speed serial data analysis for I2C and SPI requires a separate license (option 021, or N5391A). Reading between the lines, there may also be another license for FlexRay and CAN (N5402A). Does this fit with what you've found?
swperk:
That being said, this info comes from the built-in help file (which may be the exact same file on all of the Infiniium scopes of this vintage running Version 5.xx software), so certain features, options, etc. that it mentions might not be available on my particular scope. But it would be fun to find out!
G0HZU:
I looked up how much these old/obsolete scopes cost (used prices  :o ) and maybe it's best to play safe(r) and stick to keypad codes! It's up to you if you want to try the code below but it 'might' unlock the low speed serial option on your scope.

Type it carefully and double check every digit before you hit the install button :)

LSS-35162C869A44
swperk:
Well, whatever you're doing, keep it up! Worked like a charm and now the startup splash screen shows "Memory, EZJIT Plus, High Speed Serial, Low Speed Serial" and I have the I2C and SPI options in the serial decode menu.

 Thanks yet again!
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