The Nanoscale World

Controlling X/Y through analog switch in NSIIIa?

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Top 100 Contributor
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rwfriddle posted on Wed, Oct 21 2015 4:41 PM


I understand if this is prying too much, but it is regarding the long obsolete NSIIIa controller so I thought I'd ask. We would like to take control over the X/Y by feeding in our own signal just before the HV amplification on the X/Y board. There is an analog switch (DG419) situated just before a buffer that leads into the HV amplifiers. It seems that for normal operation the switch is TTL low, and thus uses the main circuitry before HV amplification (I tested it during scanning and force ramp).

We are wondering if we could tap our signal into input 2 of this DG419 chip and have a digital control to switch between the normal NSIIIa signal and our own signal for the X and Y.

Can someone share what this DG419 switch is for? When would it ever be used in TTL low? Is it ok for us to bypass it with our own signal? Thanks.


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Answered (Verified) Verified Answer

Top 10 Contributor
62 Posts
Points 660
Verified by Teddy Huang

Hi Ray,

Can you contact our AFM tech support for some details?  If they can't solve it, they can forward your question to the right person.



If you need AFM help:

Atomic Force Microscope Technical Support Group

Phone: +1 800-873-9750



Bruker Support:


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