This read-write integer from 1 to 20 sets the increment size a ComPort uses while sweeping between hcxAcqMinPower and hcxAcqMaxPower during channel acquisition, used in the INVITE_CONFIG message, with a default of 1. A finer step size gives more precise power-level acquisition but makes the ranging sweep take longer, so an admin balances acquisition speed against precision with this setting. For example, an engineer troubleshooting a marginal plant segment might reduce hcxAcqPowerStepSize toward its default of 1 for finer-grained acquisition, accepting a slower sweep in exchange for a better chance of finding the right power level.