PairGain 150-1592-02, Руководство пользователя

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Using the Maintenance Terminal 150-402-102-01, Revision 01
26 July 27, 1998 HRU-402 List 2
Table 7. Span Status Fields and Descriptions
Field Description
Time Time of day when Span Status was checked.
Date Date when Span Status was checked.
Alarms Presence or absence of alarm conditions. See Table 10 .
Loopback Indicates Off condition or identifies specific active loopback. See Table 8 .
Power Level Indicates the HDSL Power Feed voltage mode: High or Low.
Margins Indicates the excess signal to noise ratio at all HDSL ports, relative to a
10
-7
Bit Error Rate.
First value is current margin.
Second value is minimum margin since last cleared.
Third value is maximum margin since last cleared and NA means that the
margin is not available.
Pulse
Attenuation Indicates the attenuation of the 2B1Q pulse from the distant end. HiGain
operates with pulse attenuations up to 28 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.
INS Loss Indicates the approximate attenuation of the HDSL loop at 196 kHz. It is
generated by multiplying the pulse attenuation by 1.25.
PPM Offset Indicates the relative offset of the crystal oscillator in the HRU-402 from
the HLUs crystal oscillator. Any value between ± 100 is adequate.
HDSL 24
Hour ES The number of one second intervals that contained at least one HDSL CRC
error. This value is a running total of the last 24 Hours.
HDSL 24
Hour UAS The number of seconds the HDSL loop was out of synchronization.
DS1 BPV
Seconds (ES) The number of seconds in which at least one bipolar violation was
detected on the DS1 input.
DS1 UAS
Count The number of seconds during which the DS1 input signal was absent
(125 or more consecutive 0s).
Frame type Type of DS1 framing used on the input stream (SF, ESF, Unframed or No
Activity).
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 ZBTSI 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, which it displays when the DS1 CODE option is set
to AUTO.