wiki:Documentation/dSDR/GNURadio/Tutorials/RFCalibData

Version 8 (modified by nilanjan, 7 years ago) (diff)

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USRP2 - Front end calibration data

Description

Characteristics of USRP's front end were measured against an RF reference:

  1. Agilent ESG Vector Signal Generator (E4438C) for the USRP2's receiver
    USRP2 receiver measures the frequency and power level of known signals sent from signal generator.
  2. Agilent ESA-E Series Spectrum Analyzer (E4405) for USRP's transmitter
    USRP2 transmitter sends specified signal with frequency and amplitude level that is measured by spectrum analyzer.

Set Up

Procedures

Data & Plots for receiver

The data file for plots are also available in the attachments. A brief description of the columns:

  1. sgfrequency_in - signal generator frequency (Hz)
  2. sgpower_in - signal generator power (dBm)
  3. gain_in - usrp receive path gain (dBm)
  4. rxfrequency_meas - usrp measured frequency (Hz)
  5. rxpeakpower_meas - usrp measure power (dBm)
Node13-8 Receiver -- data
Node20-20 Receiver -- data

Data & Plots for transmitter

The data file for plots are also available in the attachments. A brief description of the columns:

  1. frequency_in - usrp generated carrier frequency (Hz)
  2. amplitude_in - usrp specified amplitude (dBm)
  3. gain_in - usrp transmit path gain (dBm)
  4. frequency_meas - spectrum analyzer measured frequency (Hz)
  5. peakpower_meas - spectrum analyzer measure power (dBm)
Node13-8 Transmitter -- data
Node20-20 Transmitter -- data

Attachments (69)