Physical connections and subband identification

  The DAS has two independent sections, labelled A and B. The following gives the physical connections between frontend receivers and the backend inputs:

Receiver.       DAS input.

RxA2               A0

RxB3i              A0

RxC2               A0

RxC2 (wideband)    A0+B0

Identification of the ADC sampler modules, and determining which ADC sampler is used for which subband, depends on the configuration being used. In error reporting on the operators console, the software reports the subband number (counting from 0); the lowest output channel number (left of the data display screen) corresponds with the first subband. For standard configurations, the following shows the correspondence between the software subband number and the physical ADC module.

                 Software    Physical
                  subband:    module:
(920 or 760MHz)     0          0
                    1          1
                    2          2
                    3          3
                    4          4
                    5          5
                    6          6
                    7          7

(500MHz)            0          0
                    1          1
                    2          4
                    3          5

(250MHz)            0          0
                    1          4

(125MHz)            0          4