Honeywell International Inc. KSN770 用户手册
Draft
Page 3-11
6 Dec 2012
34-70-06
SYSTEM INSTALLATION MANUAL
066-01204 / 066-01213
© Honeywell International Inc. Do not copy without express permission of Honeywell.
3.5
WX RDR Interface
3.5.1
Applicable Part Numbers
This function is only available when the optional KSN 7xx WX RDR/EGPWS option board is installed
and the associated product feature key is installed.
and the associated product feature key is installed.
When the WX RDR is not connected to the KSN 7xx, the pins must be left open.
3.5.2
Function
Radar is a method for locating thunderstorms using radio waves. The radar transmitter generates
microwave energy in the form of pulses which are then transferred to the antenna where they are
focused into a beam by the antenna and radiated. When the beam intercepts a target, the energy is
reflected as an echo back to the antenna. It is then transferred to the receiver and processing circuits
in the receiver/transmitter unit. These echoes are displayed on the KSN 7xx.
microwave energy in the form of pulses which are then transferred to the antenna where they are
focused into a beam by the antenna and radiated. When the beam intercepts a target, the energy is
reflected as an echo back to the antenna. It is then transferred to the receiver and processing circuits
in the receiver/transmitter unit. These echoes are displayed on the KSN 7xx.
3.5.3
Requirements and Limitations
The KSN 7xx must be configured for the radar installed for proper operation. The following radar types
are supported. Configuration of each type is covered in Section 4.
are supported. Configuration of each type is covered in Section 4.
Refer to Table 3-6 for the WX RDR requirements and limitations.
3.5.4
Electrical Characteristics
A.
WX RDR Control (ARINC 429)
J14-2
WX RDR CTL 429 TX A
J14-14
WX RDR CTL 429 TX B
This serial data bus conforms to ARINC 429 electrical characteristics, and may be configured for
operating speed on the maintenance pages.
operating speed on the maintenance pages.
B.
Power ON/OFF
J14-15
WX RDR POWER ON/OFF
This pin controls the power emissions of the WX RDR, and is active low, so that when the output
is pulled low, the WX RDR turns ON.
is pulled low, the WX RDR turns ON.
C.
WX RDR Data (ARINC 708A)
J14-5
WX RDR 708A 453 RX A
J14-17
WX RDR 708A 453 RX B
This serial data bus conforms to ARINC 708A electrical characteristics.
3.5.5
Interconnect Diagram
Refer to Figure 3-3 for the WX RDR interface interconnect diagram.
Draft as of 10/15/2012