max allowed output load
Posted: Sat Mar 17, 2018 8:21 pm
Hi Experts
Since January, I 'm playing with my own 14bit Red Pitaya.
I enjoy all the apps like scope or spectrum analyzer.
Now I'd like to measure my antenna by the VNA from Pavel.
First, I would simply use the bridge with 3x 50 Ohm-resistors and the antenna impedance as the 4th resistor. The signal is picked up via 1:1 transformer.
To get the references for the VNA, I have to short circiut the antenna.
Then the load for OUT1 will be 33 Ohms, (50+50)||(50+0)=33
Having no schematics available, I need to ask here:
Will I destroy the output amplifyer? What is the limit of output current allowed?
Thanks for each helping input.
Dieter
Since January, I 'm playing with my own 14bit Red Pitaya.
I enjoy all the apps like scope or spectrum analyzer.
Now I'd like to measure my antenna by the VNA from Pavel.
First, I would simply use the bridge with 3x 50 Ohm-resistors and the antenna impedance as the 4th resistor. The signal is picked up via 1:1 transformer.
To get the references for the VNA, I have to short circiut the antenna.
Then the load for OUT1 will be 33 Ohms, (50+50)||(50+0)=33
Having no schematics available, I need to ask here:
Will I destroy the output amplifyer? What is the limit of output current allowed?
Thanks for each helping input.
Dieter