The ATCA CABB backend currently interfaces with the existing ATNF DAS. This severely limits total bandwidth and flexibility of the system. Long term the ATNF DAS needs to be retired and CABB backend used directly for VLBI.
The current system uses a special “single channel” 64 MHz filter mode. Ideally all standard “continuum” modes could be used for VLBI with bandwidth/channel options of 1,4, 16 or 64 MHz.
To support VLBI observing the following is required