Andrew Wireless Innovations Group RPT-NODEC1943 ユーザーズマニュアル

 

User’s Manual for Node C Network Elements

 

Page 76 

PRELIMINARY M0121A1A_uc.doc

 

 
The actual configuration can be seen at the configuration list*, which is part of the 
delivery. 
 
The following figure shows a Node C 1943** (layout of Node C 843 is the same) and 
an Interface Unit with PSU redundancy option (two power supplies).  
 

* 

To be replaced by an electronic door label that will be accessible via software & remote control. 

**  The layout of a Node C x37 differs from the Node C x43 only in the design of the DL final 

amplifier (see chapter 5.3.5 Downlink Final Amplifier). 

 

 

 

 

 
The duplexer is used to isolate the uplink from the downlink, i.e. to separate the 
transmitting path from the receiving path. The pass band of the duplexer is the full 60 
MHz of the CDMA band. This allows the same Node C to be used regardless of its 
operator’s frequency plan. 
 
The integrated LNAs (low noise amplifiers) are biased via the RF cable from the 
DCM module. The DL/LNA can be bypassed for strong input signals by the DCM 
module automatically. 

Power supplies 
(right: optional) 

DCM modules

UL 

DL

Position of 

optional 

modem 

Duplexers 

Final amplifiers 

DL 

UL 

Distribution and 

interface board

RF and DC 

Distribution

 

Unit 

CD for 
USB driver