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DMD2401 LB/ST L-Band Satellite Modem and ODU Driver
Appendix B - Carrier Control
B.0 States
Carrier Off:
Carrier On:
Carrier Auto:
Carrier VSat:
Carrier RTS:
Carrier Delay:
B.1 Description
1.
Modulator output is turned off before reprogramming modulator functions that may alter
the output spectrum through the front panel, and the user is required to enter "Yes" to re-
enable output after the change. When using the terminal, the modulator is turned off
while re-programming modulator functions that may alter the output spectrum, and the
user is required to manually turn on the output after the reprogramming.
2.
Modulator output is turned off before reprogramming modulator functions that may alter
the output spectrum through the front panel, but the output is automatically turned on
after the change. When using the terminal, the modulator is turned off while re-
programming modulator functions that may alter the output spectrum, and but the output
is automatically turned on after the change.
3.
Modulator output is turned off before reprogramming modulator functions that may alter
the output spectrum through the front panel, and the user is required to enter "Yes" to re-
enable output after the change. When using the terminal, the modulator is turned off
while re-programming modulator functions that may alter the output spectrum, and the
user is required to manually turn on the output after the reprogramming (same as
"Carrier On"). Additionally "VSat" mode disables the modulators output is the modems
demodulator does not have signal lock. When signal lock returns to the demodulator,
the modems modulator turns the carrier back on.
4.
Modulator output is turned off before reprogramming modulator functions that may alter
the output spectrum through the front panel, and the user is required to enter "Yes" to re-
enable output after the change. When using the terminal, the modulator is turned off
while re-programming modulator functions that may alter the output spectrum, and the
user is required to manually turn on the output after the reprogramming (same as
"Carrier On"). Additionally "RTS" (Request To Send) mode enables the modulator's
output based on the RTS lead of the data interface. When RTS is enabled on the data
interface, the modulator turns on the carrier, when the RTS is disabled the modulator
turns off the carrier.
5.
Modulator output is turned off before reprogramming modulator functions that may alter
the output spectrum through the front panel, and the user is required to enter "Yes" to re-
enable output after the change. When using the terminal, the modulator is turned off
while re-programming modulator functions that may alter the output spectrum, and the
user is required to manually turn on the output after the reprogramming (same as
"Carrier On"). Additionally at power-up the carrier delay time in seconds, specified in the
<System> <Carrier Dly> (front panel) or Modulation options (terminal) will suspend
carrier output for the stored amount of seconds.
TM075 - Rev. 1.3
Modulator Output Disabled
Modulator Output Enabled (refer to Section B.1, Item 1)
Modulator Output Enabled (refer to Section B.1, Item 2)
Modulator Output Enabled (refer to Section B.1, Item 3)
Modulator Output Enabled (refer to Section B.1, Item 4)
Modulator Output Enabled (refer to Section B.1, Item 5)
Appendices
8-11
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