Quick Eagle Networks DL3800E manual Counters were last reset

5

	Pressing the DOWN ARROW from any of these displays will step you
	through the last 96 15-minute intervals while displaying the number of
	errors in each of the interval. From the Net STATISTICS MENU, press
	Enter. When you see Net N CV, press Enter again. The first display will
	read SEC. 455 VALID.8, showing the number of seconds in the current
	interval, and the number of valid 15 minute intervals since the error
	counters were last reset.
	Pressing the DOWN ARROW button from this point in the menu will show
	the number of Code Violations in the current interval (CUR 4). Pressing the
	DOWN ARROW will display the total number of errors since the registers
	were last reset (TOTL. 8). Pressing the DOWN ARROW from here will
	cycle you through the last 96 fifteen-minute intervals (or however many
	intervals exist since the counters were last reset), displaying the number of
	Code Violations in each interval, starting with the most recent, i.e., 1 = 0.
	The NET STATISTICS items are listed in Table 5-3.
	Table 5-3 NET Statistics Items
Parameter	Definition
EFS	Error Free Seconds (EFS) is calculated whenever ESR is calculated, and is the simple
	percentage complement of ESR: EFS = 100.0 - ESR. When there have been UAS in
	the statistics history for the past 24 hours, then EFS is set at 100%.
ESR	Errored Second Ratio (ESR) is the ratio of ES to total seconds in available time during
	a fixed measurement interval. The fixed interval is the last 24 hours before the current
	15 minute interval. When there have been UAS in the statistics history for the past 24
	hours, then ESR is set at 0%.
SESR	Severely Errored Second Ration (SESR) is the ratio of SES to total seconds in
	available time during a fixed measurement interval. The fixed interval to be used is
	the last 24 hours before the current 15 minute interval. When there have been UAS
	in the statistics history for the past 24 hours, then SESR is set at 0%.
BBER	Background Block Error Ratio (BBER) is the ratio of errored blocks to total blocks
	during a fixed measurement interval, excluding all blocks during SES and unavailable
	time. The fixed interval is equal to the last 24 hours before the current 15 minute
	interval.
BPV	This display provides the number of Bipolar Violations (BPVs) that have occurred
	during the accumulation period. A total of 15430 BPVs in a 10 second sliding
	window (approximately 10-3) will create a Major Alarm and 916 BPVs in a 600
	second sliding window (approximately 10-6) will create a Minor Alarm.
FE	A Frame Error (FE) is declared when two out of four consecutive framing bits are in
	error. Typically, an FE indication will be accompanied by a significant number of
	payload data bit errors. This display provides the number of FEs that have occurred
	in the accumulation period.

5-10 DL3800E Inverse Multiplexer User’s Guide — July 9, 2001