The SMA correlator can flexibly change its configuration and produce spectral data with a combination of multiple spectral resolutions and multiple bandwidths in the multiple spectral windows. It is often that the SMA data is taken from a single polarized feed of each antenna. The SMA correlator samples the data and performs correlations between each of the antenna pairs (also called baseline). A large bytes of spectral data with 24 spectral windows (or chunks) in each of the upper and lower side bands are produced after a short integration time. Assuming that no polarization is involved, the solutions of the antenna gains (complex or in both amplitude and phase), bandpass (normalized bandpass shape in both amplitude and phase) and the delay term can be solved directly from the observations of calibrators which are better to have structure as simple as possible with strong emission. A strong point source is an ideal calibrator.