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testing for mixer saturation without datasheet purely lab reading

 
Edited

Hello,I have the following old mixer called TXF-18075 which I want to test for saturation and power levels in down converting mode.

I dont have any datasheet only this brief table I found.Unlike amplifier A mixer needs two input powers the RF and LO.

How can I see In my lab two things:

1.What is the needed LO power?

2. How can I see mixer saturation using lab equipment?

Thanks.
/g/electronics101/photo/296358/3870599?p=Created%2C%2C%2C20%2C2%2C0%2C0
wn4isx
 

Can't answer the first question but as for the second.
Monitor the output with a spectrum analyzer, take care to protect input!
Increase drive level until more drive doesn't cause a corresponding increase the output.
For instance, at some point, say a 2dB increase on the input for a 1dB increase in output.
You've reached the compression.
Be extremely careful not to overload the input to the spectrum analyzer!!!!!!!
I fried a nice Tektronix back in school. To be fair, I was following the exact instructions of the professor, he neglected to place an attenuator in line.
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Don't let the magic smoke out.
 

Hello, I am using this mixer as a phase detector in a PLL? used? in down converting.
I got a matlab plot of the Error voltage as a function of frequency(A and B pint in the diagram).
from this error signal I need to know what controller to do.
How can I know that my mixer is acting good as a phase detector when I look at the error function diagram?
Thanks.

/g/electronics101/photo/296358/3865523?p=Created%2C%2C%2C20%2C2%2C0%2C0
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