18 August 1998
Figure 2-1. Typical Central Station or Island Station Equipment Room.
12. SUPPORT EQUIPMENT.
a. A UMCS test set, consisting of a smart field panel and input/output simulator, is part of the
system that enables the operator to simulate and display the operation of a smart field panel. Analog and
digital sensor input conditions are adjustable from the simulator's control panel. The simulator receives a
control signal from the smart field panel and returns a feedback signal, simulating the performance of
various analog sensors or digital monitors. By use of this device, the operator will be able to study
system response when new control algorithms are implemented, and verify the performance of programs.
b. A UMCS portable tester provides diagnostics, programming, and database entry functions
through connection to a field equipment panel. The tester will include a keyboard, display, and mass
storage device sufficient to perform all required diagnostics and exercise all points.
13. TRANSIENT PROTECTION REQUIREMENTS.
a. UMCS equipment is susceptible to interference from two types of transients: functional and
(1) Functional upsets are transients which may be caused by inductive or capacitive coupling
between data lines, control lines, and monitor lines that result in loss of data or improper control actions.
(2) Damaging upsets are transients which may be caused by voltage surges and indirect
lightning strikes that physically damage the equipment.