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Version 1.9 Build 1556

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newsimulator.setspwindow - Function

	Package	synthesis
	Module	newsimulator
	Tool	newsimulator

Set one or more spectral windows

Synopsis
setspwindow(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 observe.

Arguments

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

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

Note that the spwname is used in observe to determine which spectral window is used.