Interactive mode

In this mode questions are asked at every stage

• Calibrate array or Reset calibration? The reset option allows zeroing of delays and phases, and resetting of the gains to 1.0. This may be needed to recover from calibrating on blank sky or with a faulty correlator.
• The reference antenna.
• The number of integration cycles to average (max=8).
• Choice of calibrating D(elay), G(ain), P(hase) or A(ll).
• The calibrator flux(es) can be specified. Note that two values are needed in dual frequency mode. The value 1.0 will cause the average flux to be used (i.e., it equalizes the gains).
• Optional calibration of polarization leakage terms when on 1934$-$638. At present these are not applied to the RPFITS data, but they can be applied by VIS for on-line display of calibrated Stokes parameters.
• When applying the phase corrections, there is an option to apply a 90 degree offset to the Y phases. This should only be used for PHASED ARRAY observations that need circular polarization. (in general this means VLBI)
• When applying phase corrections, you can choose to continuously calibrate the phase. This should only be used for PHASED_ARRAY observations.

Confirmation to proceed is asked at every calibration step, a NO answer terminates the program.