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2Modem/DSU Commands
2-856800-A2-GB31-20 January 1997
This results form contains the following fields:
Bit Error Rate
Displays the ratio of the number of bits in error to the number of bits received.
Receive Level
Displays the measured receive level. A normal received signal level is –16 dB, ±4 dB.
Signal/Noise
Displays the measured signal-to-noise ratio. An acceptable signal to noise ratio is 24 dB
or greater.
Retrains
This field is reserved for future use.
Blown Startups
This field is reserved for future use.
A sample Circuit Quality results form for a COMSPHERE 3900 Series modem is shown in
Figure 2-22.
Figure 2-22. Circuit Quality Results Form for 3900 Series Modems