Instruction Manual

Page 2-10 G1000 / GFC 700 System Maintenance Manual - 300/B300 Series King Air
Revision 4 190-00716-01
2.1.15 GSR 56 Satellite Receiver (optional)
The GSR 56 provides airborne low speed data link and voice communication capability to Garmin
Integrated Flight Deck installations. The GSR 56 contains a transceiver that operates on the Iridium
Satellite network. The GSR 56 interfaces directly to the GDL 59 via an RS-232 interface or may be
installed as a stand-alone unit with an interface to GIA #1. The GSR 56 is located on the upper avionics
equipment shelf in the tail section . The GSR 56 is powered from Right Gen Avionics Bus.
Figure 2-14, GSR 56 Satellite Receiver
2.1.16 GSD 41 Data Concentrator (optional)
The GSD 41 interfaces to various airframe discrete outputs to support third party systems such as Flight
Data Recorders. The GSD 41 is located on the avionics shelf in the tail area. The GSD 41 is powered
from No. 2 Triple Fed Bus.
Figure 2-15, GSD 41 Data Concentrator