The Number of Increments is a 9-bit word that represents the number of frequency points in the sweep. The number is programmed to the on-board RAM at addresses 88 h and 89 h. The maximum number of points that can be programmed is 511. For example, if the sweep needs 150 points, the user programs 00 hex to Register 88 h and 96 hex to Register 89 h. Once the three parameter values have been programmed, the sweep is initiated by issuing a Start Frequency Sweep command to the CONTROL register at addresses 80 h and 81 h.

