User's Manual

User’s Manual for
ION-M4/8 19"
Page 24 M0132AVA_FCC.doc
3.2.7. Duplexer Subrack
The duplexer subrack of the ION-M4/8 19" is available on 2 x 4 HUs.
The duplexer subrack of the 400 MHz band consists of up to 3 duplexers and the
duplexer subrack of the 800 MHz band consists of just 1 duplexer, see following
illustration:
figure 3-12 Duplexer subrack of ION-M4 19"
Each of the two duplexer modules is equipped with one N-female antenna port and
two QMA connectors.
With the duplexer 2 the DL port is connected from the PA 2 OUT-port. The UL port of
duplexer 2 is connected to the High-Band port of the crossband coupler. With the
duplexer 1 the DL port is connected from the PA 1 OUT-port. The UL port of duplexer
1 to the 800 MHz UL-Band port of the OTRx.
Duplexer 2
400 MHz
Duplexer 1
800 MHz
PA 2
400 MHz
PA 1 800 MHzOTRx
N-antenna
connectors
CBC
UL port
DL port
UL port
DL port