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The N8485A from Keysight Technologies is a Power Sensor with Frequency 10 MHz to 26.5 GHz, Power Range -35 dBm (316.23 nW) to +20 dBm (100 mW). Tags: Thermocouple Power Sensor. More details for N8485A can be seen below.
TVAC compliant USB and LAN Power Sensor
10 MHz to 8 GHz Three-path Diode Power Sensors
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