Appendix A
Test Results Definitions
DS0 VF results
168
CT-650 Command-Line Reference Guide
Release 9.4
Receive
Level
Level of the received signal during an echo return
loss, insertion loss, PAR, three tone, or send-receive
tone measure test, measured in dBm.
DC Power
Level
Amount of DC power in the received signal.
Echo Return
Loss
Difference between the transmitted signal and the
received signal during an echo return loss test.
Impulse
Count
Number of noise spikes above the low, middle, or high
threshold.
Threshold
(impulse noise tests) Thresholds for noise spikes,
measured in dBrnC (decibels above reference noise
weighted by the C-message frequency function).
(line transient test) Thresholds for phase shifts, mea-
sured in dB.
Dropouts
Number of four-millisecond intervals during which the
circuit cannot transmit data.
Level Dif-
ference
Difference between the power of the transmitted and
received levels.
Receive
Frequency
Frequency of the received signal during an insertion
loss or send-receive tone measure test.
Signal
Level
Strength of the signal received during an Intermodula-
tion Distortion test.
2nd/3rd
Order Dis-
tortion
Level of second- and third-order distortions in the
received signal during intermodulation distortion tests.
Field
Description
Summary of Contents for CT-650
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