OPTICOM OPERA - V 3.5 User Manual page 161

C H A P T E R 6 : T E L E P H O N Y
T E S T I N G
Figure 6.38: Display of the ERL diagram type
When choosing this diagram type, the diagram will display several result values
of the echo measurement, as shown in Figure 6.39.
This diagram type distinguishes between the averaging over the time of one
window (momentary - "mom") and the averaging over the time of the whole
measurement ("peak"). See Table 6.7 for an overview of the displayed result
values.
Result Values
Min.Delay:
Frame Size:
ERLmom:
ERLmom Delay:
ERLmom Window: Window size
ERLpeak:
ERLpeak Delay:
ERLpeak Window:
Table 6.7: Interpretation of the displayed result values
Figure 6.39: Result summary diagram type
B A N D
Interpretation
Echos with values smaller than this value will not be
regarded as echo
Size of one frame
Attenuation of the echo in the momentary window
with least attenuation
Delay time of the echo in the momentary window
with least attenuation
Attenuation of the echo with least attenuation.
Averaged over the time of the whole measurement
Delay time of the echo with least attenuation.
Averaged over the time of the whole measurement
Window size
155
V O I C E Q U A L I T Y
Result Summary