Technical Manual
Airbridge BTS3606A CDMA Base Station
System Description
Chapter 3 Product Architecture
3-6
The temperature controller may be an air conditioner or a heat exchanger, which
can ensure the normal operation of the BTS in the following ambient-temperature
ranges:
--Air conditioner: –40°C to 55°C
--Heat exchanger: –40°C to 45°C
3.4 Physical Interface
Interface Type Quantity Function
Abis interface E1 or T1 8
These interfaces connect to the transmission system that
connects to the BSC. Support IMA/UNI, cascading, and ATM over
Fractional ATM function.
When E1 is selected, 75W and 120W load interfaces are
available.
When T1 is selected, the 100W load interface is available.
ODU3601C
cascading
interface
Optical fiber 8
One CCPM/CECM can provide two optical interfaces. When it is
necessary to connect the BTS3606A to the ODU3601C, up to
three levels of ODU3601Cs can be connected.
GPS/GLONASS 2
Connect to the satellite receiver and satellite synchronization
antenna to provide long-term stable clock signals.
Clock interface
External
synchronization
clock input
1
Provide high-precision clock when the GPS/GLONASS clock
signals are unavailable.
Maintenance
interface
Ethernet
interface
1 Provide local maintenance path.
Reference clock
interface
1 Output 10 MHz signals for test purpose.
Clock test
interface
Synchronization
test interface
1 Output PP2S signals for test purpose.
Power supply
interface
4 Respectively connect to A, B, C, and N lines.
PGND interface 2
Respectively connect to grounding cable, and to the auxiliary
equipment.
Power supply
and Protection
Ground (PGND)
interface
DC interface 2
Connect to the –48V DC power supply that is used to charge the
batteries.
Antenna
interface
RF signal 6
When three sectors are configured, each sector corresponds to
two DIN connectors, which can be used for both transmitting and
receiving.
Environment
Alarm Chest
(EAC) interface
Alarm signal 1 Provided by the PMU.
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