RAD Data comm ASMi-52 manual Configuring the Power Backoff, Configuring the Snext Margin

Installation and Operation Manual			Chapter 4 Configuration
		ASMi-52
	SHDSL remote port configuration		(Annex_AB)
	Transmission mode
	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.
Notes
	•
	• 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).
	•
Note	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).

ASMi-52 Ver. 2.5 Configuring the Physical Ports 4-23