Honeywell International Inc. KSN770 用户手册
Draft
Page 3-101
6 Dec 2012
34-70-06
SYSTEM INSTALLATION MANUAL
066-01204 / 066-01213
© Honeywell International Inc. Do not copy without express permission of Honeywell.
3.13 RMI/OBI Interface
3.13.1 Applicable Part Numbers
AC SIN/COS OBI and XYZ RMI information functions are only available when the KSN 7xx is interfaced
to a Bendix/King KA 90 (PN 071-01508-02XX only) or a Bendix/King KDA 697.
to a Bendix/King KA 90 (PN 071-01508-02XX only) or a Bendix/King KDA 697.
3.13.2 Function
The KSN 7xx provides bearing information TO the active waypoint in two ways:
Serial OBI (OBI CLOCK, OBI DATA, OBI SYNC) and ARINC TRANSMITTER (A and B).
The ARINC TRANSMITTER function and the SERIAL TRANSMITTER function are discussed in
Paragraph 3.11 DME Interface.
Paragraph 3.11 DME Interface.
3.13.3 Requirements and Limitations
Display of KSN 7xx RMI/OBI information in the aircraft is optional. Annunciators, placards, or a
supplement to the aircraft flight manual must clearly indicate the available sources and switching
procedures for bearing pointers that are shared with other systems. An example of this would be a
NAV/GPS relay switching a bearing pointer from the KSN 7xx bearing to the VOR bearing. It may not
be possible to certify an installation that displays non-VOR bearing information on older RMIs or HSIs
with selectors or flags labeled “VOR”.
supplement to the aircraft flight manual must clearly indicate the available sources and switching
procedures for bearing pointers that are shared with other systems. An example of this would be a
NAV/GPS relay switching a bearing pointer from the KSN 7xx bearing to the VOR bearing. It may not
be possible to certify an installation that displays non-VOR bearing information on older RMIs or HSIs
with selectors or flags labeled “VOR”.
A Bendix/King KA 90 (PN 071-01508-02XX only) or a Bendix/King KDA 697 interface is required to
provide bearing data in AC SIN/COS and XYZ RMI formats.
provide bearing data in AC SIN/COS and XYZ RMI formats.
3.13.4 Electrical Characteristics
J1-5
OBI DATA
J1-25
OBI CLOCK
J1-4
OBI SYNC
This is Bendix/King format serial OBI information.
J1-4
OBI SELECT IN
The KSN 7xx will output GPS OBI when this input is Open, and VOR OBI when the input is GND.
3.13.5 Interconnect Diagram
All part numbers of the Bendix/King KNI 582 and KI 229 RMIs and the KDA 692 RMI adapter are
compatible with this interface.
compatible with this interface.
Refer to Figure 3-24 for the RMI/OBI interface interconnect diagram.
Draft as of 10/15/2012