Specifications
Chapter 3 Operation  Optimux-XLT1 Installation and Operation Manual 
3-4 Optimux-XLT1 Controls
Table 3-2. Optimux-XLT1 Rear Panel Controls 
No. Name  Control  State  Function 
1  LINK A OK  Indicator  ON (green)  Indicates that the received signal from link A is 
detected 
2  LINK A (MAIN) 
RX 
Connector  –  Connects the input cable of the main link to the 
main link module 
3  LINK A (MAIN) 
TX 
Connector  –  Connects the output cable of the main link to the 
main link module 
4  LINK B OK  Indicator  ON (green)  Indicates that the received signal from link B is 
detected 
5 LINK B 
(BACKUP) RX 
Connector  –  Connects the input cable of the backup link to the 
backup link moduleStation Clock Module: Input 
2.048 MHz signal 
6 LINK B 
(BACKUP) TX 
Connector  –  Connects the output cable of the backup link to the 
backup link moduleStation Clock Module: Output 
2.048 MHz signal 
7  ALARMS  Connector  –  Connects the dry contacts of the major and minor 
alarm relays to a remote monitoring site 
8  MNG-ETH OK  Indicator  ON (green)  Indicates link integrity on the Ethernet port 
9  MNG-ETH  Connector  –  Connects the Ethernet port to the Management port 
10 CONTROL / 
MNG 
Connector  –  Connects the V.24/RS-232 management port to an 
ASCII terminal 
0  Turns OFF the backup power supply. The Optimux-
XLT1 is powered by the main power supply only. 
11 POWER B  Switch 
1  Turns ON the Optimux-XLT1 backup power supply; 
when set to this position, the switch lights in red. 
12  POWER B  Connector  –  Connects the Optimux-XLT1 to the AC mains or to 
the backup DC power source 
13  POWER A  Connector  –  Connects the Optimux-XLT1 to the AC mains or to 
the main DC power source 
0  Turns OFF the main power supply. The Optimux-
XLT1 is powered by the backup power supply only. 
14 POWER A  Switch 
1  Turns ON the Optimux-XLT1 main power supply ; 
when set to this position, the switch lights in red. 
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