COBHAM AVIATOR 200S - To Wire the CMU 1 and 2; To Wire the SCDU 1, 2 and 3

Electrical installation and wiring
98-145168-A Chapter 4: Installation 4-11
4444
Cable losses
Wiring diagram
See Figure 4-1: AVIATOR 200S system (minimum, AC powered) for the wiring for
an AVIATOR 200S System with the LGA-5005 HELGA
For the requirements to RF cable see Recommended RF cables on page 4-29.
4.3.6 To wire the SCDU 1, 2 and 3
ARINC-781 compliant.
The CSDU has interfaces for three high or low speed ARINC-429 interfaces for
communication with SCDU #1, SCDU #2 and SCDU #3. For cable requirements see
Recommended cables for ARINC 429 on page 4-29.
Wiring diagram
See Wiring – overview on page 4-7.
Pins for SCDU 1, 2 and 3
Description
The Satellite Control and Display Unit (SCDU) interfaces allow the CSDU to be managed
from a cockpit control panel. The CSDU uses SCDU protocol standards defined in ARINC
Characteristic 739 or WSCI (see ARINC 741, Part 2, Attachment 2F-42.1). Display and
control details may be manufacturer-specific.
4.3.7 To wire the CMU 1 and 2
ARINC-781 compliant.
Note
During installation, measure and write down the cable loss of the RF cables. See
section 4.2.4 for the maximum loss requirement at 1.6 GHz.
CSDU pin Description
MP10J Data to SCDU 1,2,3. A. (A429 output)
MP10K Data to SCDU 1,2,3. B. (A429 output)
MP01A Data from SCDU 1. A. (A429 input)
MP01B Data from SCDU 1. B. (A429 input)
MP01J Data from SCDU 2. A. (A429 input)
MP01K Data from SCDU 2. B. (A429 input)
MP10A Data from SCDU 3. A. (A429 input)
MP10B Data from SCDU 3. B. (A429 input)