Service Manual

GSM-205-423
Suggested RF configurations
31st Oct 01
Installation & Configuration: Horizon macro indoor
68P02902W08-B
CONTROLLED INTRODUCTION
Inst. 2–27
Configuration
for omni 1 or 2
(with and
without
diversity)
Figure 2-15 shows suggested single Horizon macro cabinet configurations, with
and without diversity, for omni 1 or omni 2 with duplexed combining bandpass
filter.
NOTE
If a single antenna (non-diversity) is required, the duplex
antenna RF receive cable from the transmit block must be
connected to the RxA path at the SURF. Simply switching
off diversity at the OMC-R without the correct SURF
configuration will cause a loss of reception.
B
EXT RX RX RX RX RX RX EXT
A0A1A2A0B1B2B
2
BLANK
0
ANT
RX
DCF
1
N01
BLANK
WITH DIVERSITY
RX RX
B
EXT RX RX RX RX EXT
A0A1A2A0B1B2B
2
BLANK
0
ANT
RX
DCF
1
N01
BLANK
WITHOUT DIVERSITY
Figure 2-15 Single cabinet omni 1 or 2 with DCF
Unused SMA connectors must be fitted with 50 ohm terminating loads as shown
below.
If configured for...
Then 50 ohm load required on
unused SMA input to...
omni 1 DCF 0