[mmaimcal] Re: [alma-sw-ssr] question about frequency/band switching speeds and rates

[Bryan Butler]

On 2/3/05 22:45, Bryan Butler wrote:
> 
> . OTF mosaic cell phase-center saltation: rate=100 usec; speed=10
>   usec.
>   [for the rate, i've assumed slewing at 1 deg/sec, and 950 GHz,
>   with 2 samples per FWHM; speed is a guess - it will depend on
>   how fast the correlator can reset delays]

OK - got this one totally wrong.  slew rate for OTF interferometry is 
3'/sec, not 1d/sec, which corresponds to 15 msec required 
reconfiguration speed if the phase centers are changed discretely as the 
antennas slew across the source...  but it's not clear this can be 
accomplished if the correlator phase center can only be updated on 48 
msec boundaries?