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Glossary
Glossary–2
CTS 710 SONET Test Set User Manual
CV
An acronym for Coding Violation.
dB
The symbol for decibels.
dBm
The symbol for power level in decibels relative to 1 mW.
DM
An acronym for Degraded Minute. A minute with a BER greater
than 10
–6
.
DSn
An acronym for Digital Signal-n (DS1, DS2, DS3, and DS4).
DS1 is the basic multiplex rate in North America; additional
rates are DS2, DS3, and DS4. The following table lists the DSn
rates and their multiple of DS1:
Digital Signal Transmission Rates
Level
Rate Multiple of DS1
DS1 1.544 Mb/s 1
DS1c 3.152 Mb/s 2
DS2 6.312 Mb/s 4
DS3 44.736 Mb/s 24
EFS
An acronym for Error Free Seconds.
ES
An acronym for Errored Second. A second with at least one
error.
Glossary
Glossary–2
CTS 710 SONET Test Set User Manual
CV
An acronym for Coding Violation.
dB
The symbol for decibels.
dBm
The symbol for power level in decibels relative to 1 mW.
DM
An acronym for Degraded Minute. A minute with a BER greater
than 10
–6
.
DSn
An acronym for Digital Signal-n (DS1, DS2, DS3, and DS4).
DS1 is the basic multiplex rate in North America; additional
rates are DS2, DS3, and DS4. The following table lists the DSn
rates and their multiple of DS1:
Digital Signal Transmission Rates
Level
Rate Multiple of DS1
DS1 1.544 Mb/s 1
DS1c 3.152 Mb/s 2
DS2 6.312 Mb/s 4
DS3 44.736 Mb/s 24
EFS
An acronym for Error Free Seconds.
ES
An acronym for Errored Second. A second with at least one
error.