User's Manual

Backup Control Modes 6

STXe systems come equipped with two backup control methods. Emergency control mode is

integrated standard with all systems and simply allows the system to continue functioning in the

event of a system controller failure. The backup system control and exciter feature utilizes an entire

STXe system to also allow for full control interfacing with an identical standby exciter.

6.1 Emergency Control Mode

In the event of a loss in communications with the system controller, all sub-systems enter

emergency control mode. Behavior when in this mode depends on user specified emergency

power levels. This must be set to the desired emergency power level in order to enable the

feature, which comes from the factory set at 0 W and is effectively disabled. The system will

continue to function at full emergency power as long as the exciter maintains drive to the

power amplifier. The power amplifier can only enter emergency power mode from a working

state, so it will not unmute or initialize in the emergency power state.

6.2 Standby System Control and Exciter

For complete exciter redundancy an exciter switcher kit can be acquired. These kits supply all

required hardware for utilization of standby STXe systems. The switcher system is then

paired with a second fully functional two rack unit STXe system.

Detailed information including installation and operation of this optional configuration are

contained in an Application Guide. A copy is included in standard kits and/or inserted in the

front of the binder containing this manual if shipped as part of the same order. For

electronic copies of this and any other technical documentation please visit

http://www.bdcast.com/information-center/

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