Figure 1: Logical signal path for 1400 MHz observations. All frequencies
shown are in MHz.
Figure 2: Logical signal path for 600 MHz observations. All frequencies
shown are in MHz.
Figure 3: Logical signal path for 400 MHz observations. All frequencies
shown are in MHz.
Figures 1 to 3 show the logical signal paths for the
front of the racks. Near complete signal paths exist simultaneously for the
two main setups at 1400 Mhz and 600/400 MHz. Several pieces of equipment are
duplicated to make this possible. In particular, there are separate down
converters and LOs.
To change from 600 or 400 MHz to 1400MHz only the following minimal changes should be required.