PairGain HiGain HLU-D41, Руководство пользователя

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Section 150-441-124 June 12, 1997 Revision 01
Page 24 PairGain Engineering - Plant Series HiGain HLU-D41
Table 13. Span Status Fields and Descriptions
Field Description
Time
Time of day when Span Status was checked
Date
Date when Span Status was checked
Circuit ID
Shows the user-defined circuit ID
Alarms
Presence or absence of alarm conditions. See Table 14.
Loopback
Indicates Off condition or identifies specific active loopback. See Table 15.
Margins
Indicates the excess signal to noise ratio, at either the HLU or HRU, relative to a 10
-7
Bit Error Rate.
First value is current margin, second value is minimum margin since last cleared, and third value is
maximum value since last cleared. NA means "Not Available."
Pulse Attenuation
Indicates the attenuation of the 2B1Q pulse from the distant end. HiGain operates with pulse
attenuations in excess of 30 dB. This value is related to the cable pair’s 196 kHz loss. The pulse
attenuation is a more direct indication of the loop attenuation to the 2B1Q signal than the 196 kHz
loss.
PPM Offset Indicates the relative offset of the crystal oscillator in the HLU from the HDU crystal oscillator.
Any value between -100 and +100 is adequate.
24 Hour ES The number of one second intervals that contained at least one CRC error. This value is a running
total of the last 24 Hours.
24 Hour UAS The number of seconds the HDSL loop was out of sync.
24 Hour BPV
Seconds The number of seconds in which at least one bipolar violation was detected on the DS1 input over a
24-hour period.
24 Hour UAS
Count The number of seconds during which the DS1 input signal was absent (125 or more consecutive 0s)
over a 24-hour period.
Frame type Type of DS1 framing used on the input stream (SF or ESF)
Code type Type of DS1 line coding used (AMI, B8ZS, AMI : ZBTSI or B8ZS : ZBTSI). The latter two
conditions indicate the code type that is being received when HiGain is set to its ZBTS mode. In
either the AMI or B8ZS DS1 code mode, it displays the selected code as opposed to the code type
that is actually being received.
HLU/Ver w.x-y
"
w.x
"
= the software version number of the HLU.
"
y
"
= List # of the HLU.
HRU or HDU/w.x-y
"
w.x
"
= the software version number of the HRU or HDU.
"
y
"
= List # of the HRU or HDU.