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simulator.setspwindow - Function



Package synthesis
Module simulator
Tool simulator


Set one or more spectral windows


Synopsis
setspwindow(row, spwname, freq, deltafreq, freqresolution, nchannels, stokes)


Description
Set one or more spectral windows for the observations, including starting frequency, number of channels, channel increment and resolution, and stokes parameters observed. Can be invoked multiple times for a complex observation. Must be invoked at least once before create.



Arguments

row Row number in the spectral windowg table
Allowed: Int
Default: 1
spwname Unique user-supplied name for this spectral window
Allowed: String
Default: 'XBAND'
freq Starting frequency
Allowed: Quantity
Default: '8.0GHz'
deltafreq Frequency increment per channel
Allowed: Quantity
Default: '50.0MHz'
freqresolution Frequency resolution per channel
Allowed: Quantity
Default: '50.0MHz'
nchannels Number of channels
Allowed: Int
Default: 1
stokes Stokes types to simulate
Allowed: String
Default: 'RR LL'



Example

To simulate a two spectral window (or two IF's in VLA jargon) data set, use setpwid as follows (here we are simulating 16 channels, 50MHz wide channel for each spectral window)

mysim.setspwindow(row=1, spwname='CBAND', freq='2GHz', deltafreq='50MHz',
                   freqresolution='50MHz', nchannels=16, stokes='RR LL');

mysim.setspwindow(row=2, spwname='SBAND', freq='5GHz', deltafreq='50MHz',
                   freqresolution='50MHz', nchannels=16, stokes='RR LL');

Note that the spwname is just a label and should be unique.





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2006-10-15