Next: DWELL Up: Details of SCHED Parameters Previous: DOVEX Contents . The topic of controlling scan timing is discussed in detail in the Scan Times section . ... DWELL is a very similar parameter except that, with DURation , the scan starts GAP seconds (perhaps adjusted by the old parameter PRESCAN after the previous stop time while with DWELL , the scan will start at least GAP seconds after the previous stop time, but, if necessary, will wait longer to allow all antennas to reach the source. ...