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RAD Data comm ASMi-52 Manuel D’Utilisation

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Installation and Operation Manual 
Chapter 4  Configuration 
ASMi-52 Ver. 2.5 
Configuring the Physical Ports 
4-23 
ASMi-52 
SHDSL remote port configuration 
Transmission mode 
(Annex_AB) 
Asym PSD 
 
(Asym/Sym Enable) 
Line prob   
(Adaptive rate) 
1. Power 
backoff 
(Enable) 
2.  Snext margin 
(Disable Snext margin) 
3.  Current margin 
(Disable current margin) 
4.  Loop attenuation threshold (dB)[0–127] 
(0) 
5.  SNR margin threshold (dB)[0–15] (0) 
6. Save 
 
>  
 
ESC-prev. menu; !-main menu; &-exit; @-scroll 
 
Figure 4-28.  SHDSL Remote Port Configuration Menu 
Configuring the Power Backoff 
You can determine if the transmitted power backoff is used. 
 
To configure the use of the power backoff: 
1.  From the SHDSL Local Port/SHDSL Remote Port menu, select Power backoff 
(Main menu > Configuration > SHDSL Configuration > SHDSL Local 
Port/SHDSL Remote Port > Power Backoff) (see 
Figure 4-27 and Figure 4-28
) 
to enable or disable power backoff. 
The display is refreshed and a new value appears. 
2. Select Save to save the changes. 
• 
 
•  After changing the Configured Wire option, ASMi-52 must be reset to implement 
the change. 
•  When operating in Line prob. Adaptive rate, and the clock is internal, the rate is 
limited up to 2048 bps. 
 
Configuring the Snext Margin 
The Snext margin indicates the minimum required target margin with a worst-case 
self next noise model given the current loop insertion (49 SHDSL next is 
considered the worst case). This setting is available only if the rate adaptation is 
enabled (see the line probing configuration below). 
• 
 
Disabling the Snext margin parameter allows the use of all line rates, regardless of 
line condition. 
 
 
To configure the Snext margin: 
1.  From the SHDSL Remote Port menu, select Snext margin (Main menu > 
Configuration > SHDSL Configuration > SHDSL Remote Port > Snext 
Margin). 
The Snext Margin menu appears (see 
Figure 4-29
). 
Note 
Notes