On Mon, Mar 25, 2024 at 03:44 PM, Richard B. Emerson wrote:
In a thread about the antenna attachment, I thought you said something about the antenna being a potential (no pun intended) ESD risk. Can you fill that in a little, please?
73
Rick
KC3DOO
I'm trying not to get drawn into this but¡. Just because a unit has an ESD protected input, does not mean it suddenly becomes totally immune to ESD or input Voltage overload damage. It just gets a little bit less susceptible than it was before. It¡¯s still highly ESD vulnerable. All such SA equipments are, at any price.
To anyone who knows it is pretty obvious that a simple exposed metal antenna connected straight to the SA input is going to be highly vulnerable. Just touch it accidentally and momentarily to something that is floating at maybe half grid voltage (many non earthed SMPS products for instance?) or to earth whilst TinySA is being charged by such a grid floating USB power supply. As with full size analysers and scopes costing many thousands, due diligence still needs to be applied. Peter
