Zyxel-communications Multi-service Access Platform MSAP2000 Bedienungsanleitung PDF herunterladen (Seite 242)

11. System Parameter Specification

MSAP2000 Technical Manual V3.0 11-13

Figure 11-C

Signal-to-Total

Distortion Ratio for

the following

Modules:

FXO

FXO-P

FXS

FXS-P

2W E&M

After a 1020Hz Sin Wave Signal is input into a channel, an

appropriate amount of weighed noise (complying with ITU-T

G.223 standards) is mingled with this Signal. The distortion

ratio of the Signal that emerges from the channel’s output port

falls entirely within the normal acceptable range, as shown in

the below diagram.

Figure 11-D

Gain Variation to

Input Signal Level, for

the

Following Modules:

FXO

FXO-P

FXS

FXS-P

2W E&M

4W E&M

After a -55~+3 dBm0 Signal is inputted into a channel, the

Gain Variation of that channel is compared with another

channel whose input level is -10 dBm0. The comparison

results are shown to be entirely within normal acceptable

range, as shown in the following diagram.

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