Carrier Auto; Carrier Vsat; Carrier Rts; C.4 Carrier Auto - Comtech EF Data DMD50 Installation And Operation Manual

DMD50 Universal Satellite Modem
C.4

Carrier Auto

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.
C.5

Carrier VSat

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.
C.6

Carrier RTS

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.
MN-DMD50– Revision 3
Carrier Control
C–2