Fluke 990DSL, Руководство пользователя

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XDSL Testing and Loop Qualification
DSL Auto-Test
5
5-5
Table 5-1. Service Types for Qualification (continued)
Service Type Qualification Criteria
ADSL, ADSL2
•
Param. results vs. ADSL/2 Pass Thresholds
•
WB Up. & Downstream Est. Data Rates
•
138 kHz WB Long. Balance
ADSL2+
•
Param. results vs. ADSL2+ Pass Thresh.
•
2.2 MHz WB Long. Balance
VDSL1, “1.5”, 2
•
Param. results vs. VDSL Pass Thresholds
•
0.25 MHz to 17.7 MHz WB Long. Balance
HDSL
•
Param. results vs. HDSL Pass Thresholds
•
196 kHz (Nyquist) Loss & WB Long. Bal.
HDSL2
•
Param. results vs. HDSL2 Pass Thresholds
•
WB Up. & Downstream Loop Attenuation
•
196 kHz WB Long. Balance
HDSL4
•
Param. results vs. HDSL4 Pass Thresholds
•
WB Up. & Downstream Loop Attenuation
•
196 kHz WB Long. Balance