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Can the MA2444D power sensor accurately measure a CW signal only above -20dBm? My concern is that if I am measuring power above -20dBm with multiple carriers that the measurements will not be accurate. If this is so, do I need to pad the input to keep the signals below -20dBm?
answer
The sensors must be in square law to get an accurate measurement. The exception would be if the carrier frequencies are very close to each other. Note: This sensor has a 3dB pad built in so up to -17dBm would be OK. Anything stronger than -17dBm and you would need an attenuator to stay in the square law region to keep your measurements accurate when in a multiple carrier environment.
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