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2Modem/DSU Commands
2-756800-A2-GB31-20 January 1997
Figure 2-17. Change Thresholds Input Form, Page 2
This input form contains the following fields:
Receive level (high) (Required field)
Enter a high received signal level that will cause a device to report a threshold alert. Valid
entries are from 15 to 0 -dBm; or enter ua (unassigned) to disable the effect of the receive
level parameter. The value entered must be greater than the value selected for the low
received signal level (see the next field). The modem default value is 7 -dBm. A normal
received signal level is 16 -dBm, ±4 -dBm. The modem will report a minor alarm if the
high signal level exceeds the value entered in this field.
Receive level (low) (Required field)
Enter a low received signal level value that will cause a device to report a threshold alert.
Valid entries are from 50 to 16 -dBm; or enter ua (unassigned) to disable the effect of the
receive level parameter for the specified device(s). The value entered must be less than
the value selected for the high received signal level (see previous field). The default value
is 23 -dBm. The modem will report a minor alarm if the low receive level signal exceeds
the value entered in this field.
Signal-to-noise ratio (Required field)
Enter a signal-to-noise ratio that, when exceeded, triggers a threshold alert. Valid entries
are from 5 to 40 dB; or enter ua (unassigned) to disable the effect of the signal-to-noise
ratio parameter for the specified device(s). The modem will report a minor alarm if the
signal-to-noise ratio exceeds the value entered in this field.