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, 75
W
and 120
W
load interfaces are
available.
When T1 is selected, the 100
W
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.
