User's Manual Part 2

DSPbR Series – User’s Manual
Document Number 00000.B Page 33/75
Should this style of combining not be suitable for an application, external combining is recommended. When
internal combining is not required, each RFBE module will be bolted to a corresponding BPFM, where the
output N female connectors for both boards are presented at the rear of the sub rack.
3.7 Frequency Bands
RFFE, RFBE, BPFM and 8-Ch combiner units are available for the following bands;
400-420MHz, 450-470MHz, 470-490MHz, 805-825MHz, 850-870MHz
RFI will add additional frequency bands to this product series under our product development program. Please
consult with our offices should there be a specific frequency range that you would be interested in which has not
been listed.
3.8 System Expansion
The DSPbR is expandable once the available slots have been utilised in a single sub rack frame. This is
achieved by daisy chaining additional sub rack frames.
Primarily, the CAN bus is extended to the required additional sub frame racks where the first rack would be
nominated as the “Master” sub rack. Following sub racks are referred to as “Slaves”.
This expandability accommodates additional bands and channels not possible utilising a single sub rack frame.
The scope of this user manual does not cover DSPbR sub rack expansion in detail. Systems requiring
additional sub racks frames in this manner will be provided project specific documentation.