Trace: • USRP Calibration Procedure
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gp_simulator:usrp_calibration_procedure [2019/02/26 07:22] admin created |
gp_simulator:usrp_calibration_procedure [2019/02/27 15:06] (current) admin |
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=====USRP Calibration Procedure===== | =====USRP Calibration Procedure===== | ||
- | Follow the steps below to calibrate the USRP: | + | |
- | * check Conducted Connection | + | To calibrate the USRP, follow the steps provided below. |
- | * Set USRP Cal Facrotor, Attenuator, Cable Length to 0 | + | |
- | * Spoofing Mode to Asynchronous | + | In the "USRP" tab: |
- | {{:gp_simulator:gp-simulator_usrp_calibration.png?600|}}\\ | + | * Check the "Conducted connection" box; |
- | * Connect RF out of USRP to spectrum analyzer or RF power meter. In case of spectrum analyzer set up CF to 1575.42 MHz and bandwith to 10 MHz and switch on power measurement. | + | * 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;" |
- | * Set DUT input power to -20 dBm | + | |
- | * Push Scenario Start | + | {{:gp_simulator:gp-simulator_usrp_calibration.png?600|}} |
- | {{:gp_simulator:gp-simulator_usrp_start_calibration.png?600|}}\\ | + | |
- | * Measure RMS Power of the generated signal | + | |
- | * Calculate: | + | |
- | USRP Cal Factor, dB = Dut Input Power, dBm - Power in Band, dBm | + | |
\\ | \\ | ||
- | The measured power in bandwidth should be within -45 dbm. | + | |
+ | * 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|}} | ||
+ | |||
+ | \\ | ||
+ | |||
+ | * Measure RMS Power of the generated signal; | ||
+ | * Calculate: USRP Cal Factor, dB = Dut Input Power, dBm - Power in Band, dBm. | ||
+ | |||
+ | \\ | ||
+ | |||
+ | <WRAP left round info 60%> | ||
+ | The measured power in the bandwidth should be within the "-45 dBm" range. | ||
+ | </WRAP> | ||
+ | \\ | ||
+ | \\ | ||
+ | \\ |