All of the parameters could go on one command line or be split into more than two commands, if you like. The only restrictions are that DF must be the first parameter, and UB and SD must be in the last command for the scan. IF's to 20 MHz. To match the pulse period the number of time bins and master clock frequency will be selected by the control program, and the clock frequency will track the doppler variation of the pulse period throughout the scan. The parameter DF is normally used only in the first command of an observing session since it resets all parameters to their internal default values.
All parameters retain their values from scan to scan unless overwritted by a new sps command.
The start time is offset slightly from the specified value to get the predicted pulse peak to fall in the center of the data matrix. PP pulse period. TC calibration noise source temperature. This is used only to record the value in the data header for later interpretation of calibration scans.