Telephone Line Emulator User’s Manual
40-400-00020, Rev. M
37
Figure 23. Impairments Screen
Satellite Delay
Satellite Delay emulates the time it would take a signal to travel from one satellite earth
station to the satellite then back to another satellite earth station. Satellite Delay can be
set from 0 to 1000 mS in 125 µS increments (default is 0).
Satellite Delay must be set for all lines with the same delay. This implementation will also
provide a far end echo due to mismatch of the line and device impedance at the far end.
This effect may be minimized by increasing the line attenuation for both lines in the
connection.
Metering Tones
Metering Tones are primarily used in international applications. These tones are provided
to customers when they place a phone call indicating what rate they will be billed for the
call. Each line can be programmed to enable or disable Metering Tones.
Figure 24. Metering Tones Screen
The frequency of the tone can be set at 16 kHz or 12 kHz.
The voltage of the tone can be set from 0 to 5 Vrms in 100 mV increments (default is 3
Vrms).
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