User's Manual

Andrew InCell™ Fiber Optic Distributed Antenna System Users Guide
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Interface Specifications
The BTS interface specifications are shown in Table 2 and the antenna interface specifications
are in Table 3.
Table 2. BTS Interface Specifications
Requirement Performance Specification
Operational Bandwidth
GSM-900
DCS-1800
Dual Band 900/1800
Uplink
890-915 MHz
1710-1785 MHz
890-915 MHz
1710-1785 MHz
Downlink
935-960 MHz
1805-1880 MHz
935-960 MHz
1805-1880 MHz
Connector Types- CDU
RF
Optical Fiber
AC Power (CDU only)
DC Power
Type N
Type SC Single Mode Fiber
Standard 3-pin “D” type
Molex 2-pin
Connector Locations RF and AC connectors on rear of CDU
Fiber and DC power on front of CDU
Interface Type
RF
Optical Fiber
Duplex (bi-directional port)
Single mode fiber: 1 uplink, 1 downlink
RF Impedance/VSWR 50 ohms, typical 10 dB return loss
1 dB Compression Point
Downlink 20 dBm
Third Order Output Intercept Point
Downlink
Uplink
N/A
Spurious Response -36 dBm from 9 kHz to 1 GHz
-30 dBm from 1 GHz to 12.75 GHz
Gain/Gain Linearity
Downlink
Uplink
15 db ± 2.5
15 db ± 2.5
Group Delay <1.0 usec (CDU, fiber and RAU)