Service Manual

GSM-205-323
Dual band TDF
31st Oct 01
Technical Description: Horizon macro indoor
68P02902W07-B
CONTROLLED INTRODUCTION
Tech. 5–41
Dual band TDF
functional
diagram
Figure 5-26 shows a functional diagram of the dual band TDF.
Figure 5-26 Dual band TDF functional diagram
Dual band TDF
connectors
Each dual band TDF connects to:
 The Tx output of one 900 CTU and one 1800 CTU, using SMA
connectors. The two connectors are underneath the dual band TDF.
 One 900 MHz antenna and one 1800 MHz antenna. Each antenna is used
for both Rx and Tx, and each is connected to the dual band TDF using
7/16 connectors. These connectors are on top of the dual band TDF.
 A SURF module with dual band capability. Two N-type connectors, located
on top of the dual band TDF, connect one receive path to the SURF’s
900 MHz input and one receive path to the SURF’s 1800 MHz input.