Fluke 990DSL - Setting up a DSL Modem Test

990DSL
Users Guide
5-16
•
Uncorr. Blk. Err. (Uncorrectable Block Errors), NE & FE: The
number of block errors exceeding the system’s ability to correct.
•
LOM (Loss of Margin), NE & FE: Yes indicates a least one
occurrence of a loss of Noise Margin at the DSLAM (FE) or customer
modem (NE), in the VDSLx environment.
•
Err. Sec. (Errored Seconds), NE & FE: Count of the number of one-
second intervals containing one or more CRC errors over the bearer
channel(s).
•
Sev. Err. Sec. (Severely Errored Seconds), NE & FE: Count of the
number of one-second intervals containing 18 or more CRC errors
over the received bearer channel(s).
•
DSLAM Vendor: Identifies the specific DSLAM or ADSLx / VDSLx
chipset manufacturer.
•
Network Ping Results: Results of querying or “pinging” a network
IP address or URL with a multi-packet message.
Setting Up a DSL Modem Test
In this test, the 990-GM/2 can be set up to be compatible with any combination
of the following ADSLx modem Service Types and to emulate the RT (CPE):
• ANSI T1.413 Issue 2 (ADSL)
• ITU G.992.1a (ADSL G.DMT)
• ITU G.992.2ab (ADSL G.Lite)
• ITU G.992.3a (ADSL2)
• ITU G.992.3l (ADSL2 Reach)
• ITU G.992.5a (ADSL2+)