Equipment Description; Sp-2110 System Diagram; Fig 2: Sp-2110 System Diagram - Comba Telecom SP-2110 Equipment Manual

2 EQUIPMENT DESCRIPTION

2.1 SP-2110 SYSTEM DIAGRAM

DT ANT DT ANT DT ANT DT ANT
DT DT DT DT
BTS BTS BTS BTS
DC 6V DC 6V DC 6V DC 6V
As shown in the above figure, in downlink BTS signals are received by donor antenna (connected
with DT port and located outdoor). After the duplexer the signals are sent to LNA for pre-amplification,
to FSA afterwards to get required output power. Then the signals are filtered by duplexer and are sent
to service antenna (connected with MT port and located indoor) to cover the area.
In uplink the signals from subscriber's handset are sent to the device through service antenna. After
the duplexer the signals are sent to LNA and FSA. Then after the duplexer again, the signals are sent
to BTS through donor antenna.
Note：the mobile antenna can be either the defaulted integrated antenna or the optional external
antenna according to customer's requirements.
SP-2110 QE
ENU Status : 1-3-1
EQUIPMENT MANUAL FOR SP-2110
Downlink Down Link Downlink Down Link
LNA1 LNA 1 LNA1 LNA 1
PA 2 PA 2 PA 2 PA 2

Fig 2: SP-2110 System diagram

Copyright - refer to title page
PA1 PA 1 PA 1 PA1
f P f P f P f P
PLL PLL PLL PLL
LNA2 LNA2
LNA 2 LNA 2
fp fp f P f P
Uplink Up Link Uplink Up Link
MCU MCU MCU MCU
Internal Internal
Internal Internal
ANT ANT ANT ANT
Mobile Mobile Mobile Mobile
MT MT MT MT
Phone Phone Phone Phone
LED LED LED LED
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