USRP Calibration Procedure

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=====USRP Calibration Procedure=====

To calibrate the USRP, follow the steps provided below.

In the "USRP" tab:
  * Check the "Conducted connection" box; 
  * Define the corresponding values in the "**USRP Cal Facrotor, dB**" and "**Attenuator, dB**" fields, set "**Cable Length, m**" to **0**, and then select the required "Spoofing Mode;"

{{:gp_simulator:gp-simulator_usrp_calibration.png?600|}}

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  * Connect RF port of the USRP to the spectrum analyzer or RF power meter. When using the spectrum analyzer, we recommend set **CF** to **1575.42 MHz**, **bandwidth** to **10 MHz**, and switching on the power measurement mode; 
  * Set "**DUT input power, dBm**" to "**-20 dBm**" respectively;
  * Click on the "Start Scenario" button to finish;

{{:gp_simulator:gp-simulator_usrp_start_calibration.png?600|}}

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  * Measure RMS Power of the generated signal; 
  * Calculate: USRP Cal Factor, dB = Dut Input Power, dBm - Power in Band, dBm.

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<WRAP left round info 60%>
The measured power in the bandwidth should be within the "-45 dBm" range.
</WRAP>
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