Belsimtek NS 430 User Manual page 10

DCS [NS 430]
The CDI button is used to toggle between the navigational sources (GPS or VLOC) which provide
output to the external indicators of the horizontal situation indicator (HSI) or the course deviation
indicator (CDI.) This mode is maintained inside the instrument, and external subsystems may use it.
The (OBS) button is used in order to activate Suspended mode. Suspended mode is necessary in order
to select the manual or automatic succession for the given set of waypoints. Pressing this button
activates SUSP, which saves the current waypoint as "active" even after it is passed, suspending
automatic transition to the next waypoint. Pressing the OBS button again returns the system to normal
operation with automatic sequencing of waypoints.
The MSG button is used to view system messages, important warning signs and prompts.
The FPL button allows for the creation, editing, activation and inversion of flight plans. It also provides
access to landing approaches, departures, and arrivals.
The PROC button allows the pilot to select landing approaches, departures and arrivals from the active
flight plan. When using a flight plan, available procedures from the departure and/or arrival airport are
offered automatically. The pilot may also manually choose their airport and procedures if necessary.
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