The annunciator panel may display warnings or cautions that are not necessarily indicative of a problem; for example, a Cessna 172 on its after-landing roll will often flicker the " Volts " warning simply due to the idle throttle position and therefore the lower voltage output of the alternator to the aircraft's electrical system.
42.
All rooms in the building are fitted with " annunciators " ( monitors which announce in real-time the current business in the Chambers of the House of Commons, the House of Lords, or both ) . " Division bells " are also installed throughout the building, which alert MPs to the calling of a division ( vote ) in the Chamber of the House of Commons.
43.
:The loss of power from the UPS units caused a loss of all the following : the control room annunciators, the safety parameter display system computer, control rod position indication, the plant process computer, the core thermal limits computer, the feedwater control system, some of the lighting for the plant, the plant radio and paging systems, some instrumentation for balance-of-plant systems, and some instrument recorders.
