2
GPS Receiver Assembly:
Module which contains the GPS receiver and high precision crystal oscillator.
Remote Battery Pack:
Module containing rechargeable cells, fuse and charging circuits.
28V to 14VDC Converter:
Contains circuitry for converting 28V power bus to 14V in 28V aircraft.
1.2
DETAILED DESCRIPTION
Internally, the GNC 250/300 is divided into seven printed circuit boards; the CPU, GPS Receiver,
Comm Receiver, Comm Transmitter, Interface, Display, and Keypad Circuit boards. The block
diagram in Figure 1 shows the relationships between major circuits and modules within the GNC
250/300.
