Northern Airborne Technology RS08 - Manual (Page 9)

SM15 Rev. 4.00 RS08 Remote Switch Manual
Nov 24, 2003 Page 1-1
ENG-FORM: 800-0106.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
Section 1.0 Description
1.1 Introduction
Information in this section consists of: purpose of equipment, features, specifications,
and a listing of all models available to the date of publication.
1.2 Purpose of Equipment
The RS08 is a bulkhead mounted remote switching unit. It is specifically designed to
handle the switching requirements of two navigation systems (i.e. NAV/GPS,
NAV1\NAV2) sharing a common NAV system indicator.
Switching control for the RS08 comes from an external switch, and provision is made to
force the return of the system to the VOR/ILS display, if an ILS station is selected by a
connected nav system.
The RS08 provides switching for FLAG, TO-FROM, and DEVIATION lines, as well as
providing annunciation output to show the display status of the common indicator.
1.3 Features
Dry circuit to 2A contacts are provided for 6 poles, and 2 poles are furnished cross-
linked to provide positive functional annunciator drive, with a built-in lamp dimming
function (100 mA Max.) This provides the maximum possible safety margin for the pilot's
mode indicator.
Glideslope/ILS interlock is provided for indicator return to ILS mode, where allowed by
local Regulatory Authorities. Loss of power automatically returns the indicator to the
primary NAV aid. The RS08 Remote Switch operates from +9 to 33 Vdc without change
in interconnect.
All interconnect and relay contacts are gold plated. Relays are sealed, high vibration
rated (50g shock), dry nitrogen filled units. Circuit boards are constructed of G10-FR
(flame-retardant) material, with solder masks, reflowed tin plating, and environmental
post-coating.