User's Manual

U
SER
´
S MANUAL FOR BAND SELECTIVE REPEATERS
MR
X
03P
User'sManual.doc Id.-No.:154999 Page 12 22-Jan-01
2.3. COMPONENTS OF THE MRX03P
The actual repeater configuration can be seen at the configuration list which is part of
the delivery.
2.3.1. Duplexer
The task of the duplexer is to isolate uplink from downlink, i.e. to separate the
transmitting path from the receiving path. The pass bandwidth of the duplexer is the
entire width of the UL- and DL band of the corresponding network.
figure 2-2 Duplexer
2.3.2. Measuring Aids
With built-in RF probes at the duplexers, test signals can be applied or detected
(see figure 2-2). The probes are provided with different coupling factors, 30 dB for
measurements and 20 dB for the optional modem. Each antenna port is equipped
with one coupler. This facilitates measurements under all operational conditions while
an antenna or a dummy load may be connected.
Modem
connect.
(20dB)
30dB
Coupler