The CMD 57/59 output level for BER measurement can be calibrated to high accuracy to match GSM 11.21, (with modulated signals and adjacent timeslots + 50 dB above the used timeslot) using a simple test setup containing an NRVD power meter and an FSE spectrum analyzer.
Application Note - English version
Excel Sheet for a uncertainty calculation of the CMD output level after calibrating according to this application note.
Excel Sheet No for convenient calculation of the mean level error of the CMD, dependent on the measured results.
