Appendix C. Carrier Control; States; Carrier Off; Carrier On - Radyne OM20 Installation And Operation Manual

Appendix C. Carrier Control

C.1

States

The OM20 transmitter will turn off the carrier output automatically when the modem determines
there is a major alarm. This is done to prevent the carrier from outputting an unknown spectrum
and possibly disturbing adjacent carriers. This automatic drop of the carrier can be overridden
by masking the alarm that is causing the fault. This will keep the modulator output spectrum
transmitting, even when the fault occurs. The following Carrier Control states are available:

Carrier OFF

Carrier ON

Carrier AUTO
Carrier VSAT
Carrier RTS
C.2 Carrier Off
Modulator output is disabled.
C.3 Carrier On
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.
MN-OM20– Revision 5 C–1