My university owns a Teseq NSG4070-35 conducted immunity measurement unit, including a 6dB attentuator and M3-CDN.
In the handbook and datasheet of the device it says that the power meter is sensitive and can be damaged above 27dBm. However, when one calibrates the test scenario for EN 61000-4-6, the power meter measures the signal coming from the AE-Port of the CDN that is connected via the attentuator to the amp out port of the NSG4070-35.
Access to datasheet: http://www.teseq.com/products/NSG-4070.php, under downloads
I have calibrated the device successfully for low voltages, but now i would like to test it for 30V conducted immunity. In the calculation of test levels, it says that the voltage levels at U=30V are 1/6 of the test levels, meaning 5V which calculates to 26.95dBm in a 50 Ohm system. In the datasheet, it says that the power meter input should not exceed 27dBm, the absolute maximum rating is 28dBm. Can anyone tell me if another attentuator is needed or if i am fine? What i don't get is that a 6dB attentuator is used anyway, so i should not come close right? And in the datasheet it is said, that the NSG4050 in varaint -35 can only measure levels of up to 19V with a CDN. If that is the case, can the power meter input still be destroyed?