Installation Manual

Interface of the LGA-5005
98-152675-A Chapter 2: Introduction 2-3
2222
Cobham Public
The following block diagram shows the AVIATOR 200S system with LGA-5005:
The LGA-5005 is intended to comply with DO-262B, Appendix E, as part of an AES4 system.
LGA-5005 may only be installed with an AVIATOR-S CSDU [SDU-5045, part number
405045-vvccc] and SCM [SCM-5055, part number 405055-vvccc]. Together, these three
items form a complete AES4 system, as defined in DO-262B, Appendix E.
The LGA-5005 is powered by the CSDU (SDU-5045) of the AVIATOR 200S system.
2.3 Interface of the LGA-5005
The LGA-5005 has a single TNC female bulkhead connector to interface to the CSDU. This
interface carries the following signals, separated in the frequency domain:
• DC supply from the CSDU to power the LGA-5005
• RF Tx signal to be amplified and transmitted from the antenna.
• RF Rx signal received by the antenna and amplified by the LNA.
• Control link modem signal from the CSDU to the LGA-5005.
• Status link modem signal from LGA-5005 to the CSDU.
The interconnection cable design will be specific to the requirements of the aircraft type.
The interconnection cable between the antenna and the CSDU may be supplied as part of
Figure 2-2: AVIATOR 200 S with LGA-5005