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Commands

catie antennas
change the active antennas for the first, or both, frequencies: eg catie ant 123456 345 will have all antennas active for frequency 1 and antennas 3, 4 and 5 active for frequency 2.

catie function
The possible functions are for linear polarisation (XX, YY) or circular polarisation (XX+YY, XX-YY) and can be changed for either the first frequency
Examples:
 catie function XX YY  Linear polarisations for just frequency 1.  
 catie function XX-YY XX+YY XX YY  Circular for frequency 1, and linear polarisation for frequency 2.  

catie reference
sets the reference level.

catie gain
Set gains for the four channels of the tied array, eg catie g 4 for all dishes

When the correlator configuration file is one of the tied array alternatives, then the statistics values will be calculated. The reference levels have an effect on the calculation, similar to the attenuators on the antenna sampler statistics. The statistics values should be 34% ($\pm 1$). To change them, adjust the appropriate reference levels: to increase the statistics, decrease the reference level and to decrease the statistics, increase the reference level.


next up previous contents index
Next: Weather Monitoring Up: CATIE Program (VLBI) Previous: CATIE Program (VLBI)   Contents   Index
Robin Wark 2006-10-24