User's Manual Part 2

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DSPbR Series – User’s Manual

Document Number 00000.B Page 26/75

Channel programmability

Channel programming is done via the web browser GUI interface – Refer to chapter 5.2.7

Level 1: User name and password access via the web browser GUI interface displays only status of the channel

configuration.

Level 2: User name and password access via the web browser GUI interface facilitates status display and

channel configuration capability.

Typical hardware configuration examples

RFFE 410-410 module is configured with an RFFE 400-420MHz board in side “A” and the same 400-420MHz

RFFE board in side “B”.

An RFFE 815-860 module is configured with an RFFE 805-825MHz board in side “A” and an 850-870MHz

RFFE board in side “B”.

3.3.7 RFBE – RF Back End Module

An RFBE module is partitioned into side “A” and side “B”. Two RFBE boards are fitted into an RFBE module.

The RFBE boards can be in different bands, however the BPFM fastened to them must have the corresponding

side “A” and side “B” band pass filters.

Figure 9 – RFFE & BPFM bolted together

RFFE

BPFM

Summary of content (5 pages)

PAGE 1
DSPbR Series – User’s Manual BPFM RFFE Figure 9 – RFFE & BPFM bolted together Channel programmability Channel programming is done via the web browser GUI interface – Refer to chapter 5.2.7 Level 1: User name and password access via the web browser GUI interface displays only status of the channel configuration. Level 2: User name and password access via the web browser GUI interface facilitates status display and channel configuration capability.
PAGE 2
DSPbR Series – User’s Manual The motherboard architecture accommodates up to sixteen RFFE boards (eight modules). A DSP board in side “A” takes inputs from RFFE boards in slots 9 & 8 and drives RFBE boards in slots 1, 2, 5 & 6. A DSP board in side “B” takes inputs from RFFE boards in slot 7 and drives RFBE boards in slots 3, 4, 7 & 8. The slot allocations for the DSPbR reflect the DSP architecture where the first four RFFE channels (2 modules) are allocated to slots 1 and 2.
PAGE 3
DSPbR Series – User’s Manual down menu will indicate a level of up to +46dBm the level remains constant at +43dBm as the maximum. Refer to Table 3. GUI Channel Configuration Overview page 8-Ch Combiner Filter “Tick When an 8-Ch combiner filter unit has been fitted in either the uplink or downlink or both, the provided tick box needs to be activated “per channel” feeding through the 8-Ch combiner filter unit in order for the maximum output power to be auto-adjusted.
PAGE 4
DSPbR Series – User’s Manual Notes: 1) Approximate loss through combiner filter unit for all bands is 11.5dB 2) Duty Cycle assumption per channel 100% 3) All carriers are to be set to the same level As indicated in Table 3, an additional 11.5dB of loss has to be added to the RFBE RF output power figure to get an indication of the output of the 8-Ch combiner filter unit. The output power level has then to be adjusted negatively by 0.25dB if it is fed through a TLM or 1.2dB through the standard BPFM.
PAGE 5
DSPbR Series – User’s Manual BPFM’s are used to filter the input to the RFFE’s and filter the output of the RFBE’s. They are factory tuned to provide a 20MHz pass band and NOT considered field tuneable. No attempt should be made to tune or optimise tuning of this filter. Figure 10 – Bolting RFFE or RFBE onto BPFM An arrow with the letters “UP” on the rear face indicates the module orientation. 3.3.9 Cxxx-8 - 8 Ch Internal Combiner Filter Unit.