K-band CW characterization Procedure

Objective

Measure the RSSI obtained though all the 1GHz band when inputting a CW and characterize it.

Turn on equipment
- Spectrum analizer
- Signal generator
- Power supply
Configure to desired parameters
- Spectrum analizer
  - Set center frequency in the middle of RSSI input band (869MHz)
  - Set enough span to observe the RSSI input band (30MHz)
  - Set RBW and VBW to an adecuate level
- Power supply
  - Set Voltage to 3.3V
  - Set current limit to 0.3A
Set up nucleo board and PC
- Make sure the proper code is loaded into the nucleo board
Make connections
- Connect the power supply to the payload:
  - Vcc to PoL (RED)
  - GND to GND (BLACK)
- Connect the DAC output to the DAC_In (GREEN)
- Connect the ADC input to the ADC_Out
- Connect the signal generator output to the IF input PIN (BLUE)
- Connect the spectrum analizer to the switched measuring pin (PURPLE)
- Connect PC to ground (plug in the charger).
- Connect necleo board to computer by USB.
Power on power supply.
Begin the measurements procedure
- Run the flashed program in Debug mode.
- Measure the signal observed with the spectrum analyzer.
- Disconnect the spectrum analizer connected to the switched measuring pin (PURPLE).
- Once the program stops at the breakpoint, collect the calculated mean and plot it in a data processing software like Matlab.
Analyze the collected data.