CopperOptics 150-1218-02, Руководство пользователя

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Section 150-612-100
Revision 02
Page 15
TABLE 5. GLOSSARY OF HIGAIN TERMS
Term Definition
MARGINS Indicates the excess signal to noise ratio, at either the HLU or HRU, relative to a 10-
7 Bit Error Rate. 1st value is current margin, 2nd value is minimum margin since
(C)leared last, 3rd value is maximum value since cleared and NA means Not
Available.
PULSE
ATTENUATION Indicates the attenuation of the 2B1Q pulse from the distant end. HiGain-2 operates
with nominal pulse attenuations up to 28 dB. This value is related to the cable pair’s
392 kHz loss. The pulse attenuation is a more direct indication of the loop
attenuation to the 2B1Q signal than the 392 kHz loss.
PPM Indicates the relative offset of the crystal oscillator in the HRU-612 from the HLU-
611’s crystal oscillator. Values usually range from -100 to +100.
VHDSL 24 Hour ES
(Errored Seconds) The number of 1 second intervals that contained at least 1 CRC error. This value is
a running total of the last 24 Hours.
VHDSL 24 Hour UAS
(Unavailable Seconds) The number of seconds the VHDSL loop was out of sync.
DS1 BPV Seconds
(ES) The number of seconds in which at least 1 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 0’s)
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-2 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.
Ver Vw.xL “w.x” = the software version number of the HLU
Vw.xR “w.x” = the software version number of the HRU.
yzL “yz” = List number of the HLU
yzR “yz” = List number of the HRU.