No, the AVM Signal Conditioner will process the engine vibration indication when N1 > 20% for FAN and LPT vibrations OR N2 > 40% for HPC and HPT vibrations (whichever occurs first). The VIB indicator will display 0.0 starting when the AVM Signal Conditioner is powered up until N1 < 20% OR N2 < 40%. In case an AVM failure, the VIB indication will be blank. The highest of the FAN, LPT, HPC and HPT vibrations is displayed on the VIB indicator of the Display Electronic Units (DEUs) when N1 > 20% OR N2 > 40% (whichever occurs first).No, there is no data suppression logic during an engine start phase. Due to hardware and software limitations and as explained in R1), the engine vibration is not able to be processed below 20% N1 and 40% N2. Boeing recommends to review the Flight Operations Review (FOR) 737-13 titled “Engine Vibration Procedures” attached here for your convenience. FOR is accessible via MyBoeingFleet portal -> Flight Operations -> Bulletins and Newsletters -> 737 -> Flight Operations Review. “On airplanes with AVM procedures, flight crews should also be made aware that AVM indications are not valid while at takeoff power settings, during power changes, or until after engine thermal stabilization.”