Author Topic: MSO6000A logic analyzer pinout?  (Read 1459 times)

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Online Jwalling

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MSO6000A logic analyzer pinout?
« on: July 31, 2016, 09:11:05 pm »
Does anyone have the pin-out for the MSO6000A logic analyzer connector? Cable is part # 54620-61801
which seems to be used on lots of Agilent analyzers.
I thought this would be easy to find, but no luck so far... :-//
Thanks.

Jay
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Online Neganur

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Re: MSO6000A logic analyzer pinout?
« Reply #1 on: July 31, 2016, 09:46:01 pm »
 
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Online Jwalling

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Re: MSO6000A logic analyzer pinout?
« Reply #2 on: July 31, 2016, 10:02:09 pm »
Awesome! Thank you, Neganur. I knew it had to be documented somewhere.

Jay
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Offline Berni

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Re: MSO6000A logic analyzer pinout?
« Reply #3 on: August 05, 2016, 03:14:16 pm »
By the way there is some circuitry inside the probes that is used to reduce loading and improve the frequency response(All passive). Something you might want to consider when making your own.
 
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Online Jwalling

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Re: MSO6000A logic analyzer pinout?
« Reply #4 on: August 05, 2016, 07:54:32 pm »
By the way there is some circuitry inside the probes that is used to reduce loading and improve the frequency response(All passive). Something you might want to consider when making your own.

Not a problem if there is. I just wanted to do a basic test on a purchased unit off Ebay before investing in a proper probe.

Jay
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Offline MindBender

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Re: MSO6000A logic analyzer pinout?
« Reply #5 on: June 20, 2019, 06:02:43 am »
For whomever is interested: This cable is entirely passive. It surprised me quite a bit, because I always thought there would be a little amplifier in the problets. It seemed like there's a ceramic hybrid hidden inside. But it turns out there're only passives components on it. Below the proof.
 
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Offline DaJMasta

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Re: MSO6000A logic analyzer pinout?
« Reply #6 on: June 20, 2019, 06:54:35 am »
I'm surprised it's twisted pair, but I think that's how the older HP 40 pin LA pods do it.  The newer pods for higher frequencies actually use a microcoax from the connector body to the test point, then have a little RLC network for conditioning in the connector housing, but all the amplification and whatnot happens on the board in the LA.
 

Offline Berni

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Re: MSO6000A logic analyzer pinout?
« Reply #7 on: June 20, 2019, 03:10:08 pm »
The big cable from the scope is not twisted pair?

Thought it was by how the cable looks woven around, but on the x-ray photos the wires look like they are just simply running straight. Or is there some sort of conductive thread surrounding the wires in the weave?
« Last Edit: June 20, 2019, 03:11:58 pm by Berni »
 

Offline oPossum

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Re: MSO6000A logic analyzer pinout?
« Reply #8 on: June 20, 2019, 10:06:36 pm »
Some visible light pictures of the pods.




 

Offline Berni

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Re: MSO6000A logic analyzer pinout?
« Reply #9 on: June 20, 2019, 11:05:47 pm »
Ah now i see. Should have taken a closer look at them.

So they run a smaller ground wire on each side of the signal wire to provide a good high frequency return path for each of them.
 


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