MDS MX-2104 Dokumentacja Strona 137

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MX-2100/2104 Installation and Operation Manual Chapter 5 Diagnostics
Diagnostic Tests 5-15
Tone Injection
The test tone is a data sequence repeating at a rate of 1 kHz. This data sequence is
identical to the data sequence that would have been generated if a 1 kHz signal
having a nominal level of 1 mW (0 dBm0) were applied to the input of the
channel codec.
The test tone is connected directly to the output of the tested channel transmit
path, instead of transmitting the subscriber transmit signal. The tone can be
connected to only one channel of a voice module at a time. Tone injection
automatically disconnects the local subscriber signal. Figure 5-7 shows the signal
paths.
Remote
MX-2100
Local
MX-2100
User or Test
Equipment
User or Test
Equipment
CHANNEL 1
TEST
DONE
Figure 5-7. Voice I/O Module, Test Tone Injection Path
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