another downconverter external

[COMSIS]

Hello

Another question that how will i check what is the minimum and maximum power of the input downconverted signal to the digitizer in case of external downconverter. so that i might not Blow up my 5142.... is it the same as using it with RFSA i.e +30dbm max...

Regards

Madd 

[dansch]

Hello Madd,

The 5600 downconverter's specifications are due to the fact that there are internal attenuators which will be applied to reduce this power level internally. Generally, the 5600 downconverter will try to get the IF output level as close to 0 dBm as possible when passing it to the 5142 digitizer through the use of its IF attenuators.

Looking at just the 5142 digitizer without the 5600 downconverter, it has a maximum range of ±5 V when the input impedance is set to 50 Ω. Calculating the power of this, the maximum value would be equal to 10*log(5^2/50) = 10*log(500m) = approx. 27 dBm. If you are interested in the value with an input impedance of 1 MΩ, the equation would become 10*log (5^2/1M). Hope this helps,

[madd]

Heloo

 Tnx  My sollution

Regards

Madd

[Chris_W.]

Hello Madd,

Because your question on this post is the same as on other threads, we would like to consolidate your posts to one thread so that everyone who is interested can follow the progress of your issue. All further activity on this issue will continue on thread linked HERE. Thanks.

Chris W