ADC 150-1592-11, Руководство пользователя

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Initializing the Maintenance Terminal Screens 150-402-111-02
32 December 8, 1998 HRU-402 List 1A
Table 8. 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.
Loopback Indicates Off condition or identifies specific active loopback. See
Table 10 on page 41 .
Power Level Indicates the HDSL Power Feed voltage mode: High, Low, or Disabled.
Margins Indicates the excess signal to noise ratio at all HDSL ports, relative to a
10
-7
Bit Error Rate, in xx/xx/xx format where:
First value is current margin.
Second value is minimum margin since last cleared.
Third value is maximum margin since last cleared.
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. This
value is a running total of the last 24 Hours.
DS-1
24-Hour BPV
Seconds (ES) The number of seconds in which at least one bipolar violation was
detected on the DS-1 input. This value is a running total of the last 24
Hours.
Continued