General Information; Introduction; Equipment Description - Honeywell BENDIX/KING KTR 2280 System Installation Manual

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KTR 2280 Preliminary H 08/17/06
SECTION 1

GENERAL INFORMATION

1.1 INTRODUCTION

This manual contains information relative to the physical, mechanical, and electrical
characteristics of the Honeywell KTR 2280 Multi-Mode Digital Radio (MMDR). Installation
and check out procedures are also included. Information relative to the maintenance,
alignment, and procurement of the replacement parts may be found in the KTR 2280
Maintenance/Overhaul Manual, P/N 006-15654-XXXX. The only current KTR 2280
installation option is as a part of the APEX system. For additional information relating to
the APEX system, refer to the APEX System Manual 006-10667-XXXX or applicable
Engineering Bulletin (EB). This manual, the Apex System Manual, and the applicable EB
define the recommended installation for the KTR 2280. Final design of the installation and
airworthiness approval is incumbent upon the installer and their respective certification
authority.

1.2 EQUIPMENT DESCRIPTION

The KTR 2280 APEX MMDR Transceiver is a blind, panel mount integrated transceiver
containing one transmitter and four receivers. The KTR 2280 operates at a nominal
voltage of 27.5 VDC. The KTR 2280 is controlled by APEX LRU's which send control
information to the KTR 2280 via ARINC 429. Some outputs from the KTR 2280 are in
digital formats and sent to other LRU's via ARINC 429. Other outputs are more traditional
analog outputs.
The transmitter is a 2280 channel, 16 Watt COM transmitter capable of 8.33 kHz channel
spacing operation. The four receivers include one 200 channel NAV receiver, one 40
channel glideslope receiver, one COM receiver, and one ADF receiver. The COM
receivers have 2280 channels and are capable of 8.33 kHz channel spacing. The ADF
tunes frequencies from 190 kHz to 1799 kHz and 2180 kHz to 2189 kHz. The KTR 2280
has no user interface and is completely controlled by other components of the APEX
system via ARINC 429.
The KTR 2280 contains BIT (Built In Test) equipment so that the operational health of the
unit is constantly monitored. When a critical fault is detected, the unit notifies the APEX
system. The unit stores detected failures in non-volatile memory for later review. The unit
also has a temperature sensor and a timer so that faults can be time stamped and
temperature data can be collected and stored.
Rev. 0, Aug/2006 Page 1-1
©Honeywell International Inc. Do not print without express permission of Honeywell