Premier Mounts Modem CDM-600 사용자 설명서

CDM-600 Satellite Modem 

Revision 7 

Automatic Uplink Power Control (AUPC)  

MN/CDM600.IOM 

12–2 

1)  The user, under the menu (CONFIG, MODE) first ensures that EDMAC is 

selected. EDMAC may be selected as IDLE, or the unit may be defined as an 
EDMAC Master or Slave. The important consideration is that EDMAC framing 
should be enabled. 

 

2)  The user should verify that the remote modem also has EDMAC framing 

enabled. 

 

3)  The user, under the menu (CONFIG, TX, POWER) sets the nominal output 

power of the modem. This is done by selecting the MANUAL mode, then editing 
the TX output power level displayed. 

 

4)  The user will then select AUPC as the operating mode. At this point the user will 

be prompted to define four key parameters: 

This is value of Eb/No that the user desires to keep constant at the remote modem.  
 
If the Eb/No exceeds this value, the AUPC control will reduce the TX output power, but 
will never drop below the nominal value set.  
 
If the Eb/No falls below this value, the AUPC control will increase the TX output power, 
but will never exceed the value determined by the parameter MAX RANGE.  
 
•  The minimum value the user can enter is 0.0 dB 

•  The maximum value the user can enter is 9.9 dB 

•  The default value is 3.0 dB 

•  The resolution is 0.1 dB 

This defines how much the modem is permitted to increase the output level, under AUPC 
control. 
•  The minimum value the user can enter is 0 dB 

•  The maximum value the user can enter is 9 dB 

•  The default value is 1 dB 

•  The resolution is 1 dB