ADTRAN DE-4E specifications Pulse Attenuation

The Current System Status Screen, illustrated in Figure 8, provides quick access to FT1 DP status information.

The Elapsed Time display indicates the period of time since the unit began collecting performance information. At each 15-minute interval, the performance information is transferred to the

15-minute performance data registers accessed from the Performance History screen. At each 24-hour interval, the performance data is transferred into the 24-hour performance data register also accessed using this screen.

Figure 8 consolidates current information for the DSL and DS1 interfaces. A key to the information provided is found in the center of the screen. Arrows indicate the key applies to the FT1 DP. The following defines terms used on this screen:

LOSS	Pulse Attenuation
	Measurement
SYNC	DSL Loop 1 Sync Status
ES 15M/24H	Errored Seconds
SES 15M/24H	Severely Errored Seconds
UAS 15M/24H	Unavailable Seconds

NOTE

The first number is for the current 15-minute period. The second number is for the current 24-hour period.

A measure of signal quality for each DSL loop is graphically depicted on the bottom right and left of the screen. The measure is from 0 to 9 (poor to excellent signal quality). Guidelines for interpreting the indicators are:

0 ......... Poor signal quality. Noise margin is ≤ 0 dB

(≈ 10-7BER).

1-8 ...... Margin measurement above 10-7BER in dB.

9 ......... Excellent signal quality. Margin is ≥ 9 dB

above 10-7BER.

Predicting performance based upon signal quality varies with each loop. Generally, a noise margin of 0 dB or higher will support a bit error rate (BER) of better than 10-7.

Type “Z” at the Current System Status screen in order to reset performance registers to zero at both the Current System Status and Performance History screens.

FT1-DP		CURRENT SYSTEM STATUS				FNID
NETWORK	(DSL)	ELAPSED TIME 00:08:18				CUSTOMER	(DSL)
-----------------------						-------------------
00 dB		<-		LOSS	->	00 dB
NO		<-		SYNC	->	NO
000/00000		<-	ES	15M/24H ->		000/00000
000/00000		<-	SES	15M/24H ->		000/00000
498/00498		<-	UAS	15M/24H ->		498/00498
LOOPBACKS	INACTIVE					LOOPBACKS INACTIVE
FT1-DP SIGNAL	QUALITY		FNID DS1			FNID SIGNAL QUALITY
[ ]	9	--------------------				[ ]	9
[ ]	8	FRAME		——>	SF	[ ]	8
[ ]	7	CODE		——>	AMI	[ ]	7
[ ]	6	LBO		——>	0 dB	[ ]	6
[ ]	5	BPV		——>	00000	[ ]	5
[ ]	4	ES		——>	00000	[ ]	4
[ ]	3	SES		——>	00000	[ ]	3
[ ]	2	UAS		——>	00000	[ ]	2
[ ]	1	ALARMS		——>	NONE	[ ]	1
[ ]	0	NO SEALING CURRENT				[ ]	0

Press “Z” to zero registers, “M” for Main Menu.

Figure 8. Current System Status Screen

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