Users Manual

ALL

EFFECTIVITY

Page 5-41

22 Apr 2019

23-15-49

SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL

ASPIRE-400

NOTE: Each X and grey shading indicates a live data field.

G. Receiving Command Label

(1) Protocol Encapsulating labels are used to exchange data between the CFDS and the

SDU where the labels' content contains different content for the same label number.

(2) Only protocol words are sent in this direction (i.e. no records and blocks).

(3) For CFDS Type 1, the ACD receives the following label from the "Data from CFDS"

interface with a period of 108 ms to 1.1 s:

(a) Label 227 CFDS to SDU Command Summary Word

NOTE: This word is transmitted even when there is no requested command

function.

(4) When ORT selected to CFDS Type 1, the ACD processes Label 227 commands on the

ARINC 429 "Data from CFDS" interface:

(a) No Request

(b) Commanded Self-Test

(d) New Flight Leg

(e) Previous Page

(f) Next Page.

(5) The ACD only responds once in response to configuration data requests received within

a 4 second period.

(6) The SDU sends the configuration data page in response to a "Next Page" command or a

"Last Page" command.

H. CFDS Commanded Self-Test

(1) When ORT selected to CFDS Type 1, the SDU supports Self-test commanded by Label

227 (with equipment id 041H) command word, including:

(a) Commanded self-test preconditions are satisfied;

(b) Reporting via Label 350 to the CFDS if Self-test is enabled or disabled;

Amplifier);

(2) The ACD transmits applicable CFDS fault summary words (Minimum of Label 350) within

12 seconds of receiving the Self-test command.

I. Shop Fault Reporting

(1) There is no requirement to support Shop Fault Reporting for CFDS Type 1.

13. Navigation System Interfaces

A. IRS1 Interface ("Data from Primary IRS/GNSS")

(1) The ACD sets the ARINC 429 interface, "Data from Primary IRS/GNSS", to high-speed

operation.

DRAFT

3rd rvw Draft as of:

29 January, 2020