Electrical installation and wiring
98-158751-C Chapter 4: Installation 4-15
Description of the cockpit audio 1 and 2
There are two 4-wire interfaces to be connected to a headset.
Wiring diagram
See Wiring – overview on page 4-7
Pins for cockpit audio 1 and 2
4.3.11 To wire IRS/GNSS
Wiring diagram
See Wiring – overview on page 4-7.
Pins for IRS/GNSS
4.3.12 To wire antenna BITE
ARINC-781 compliant.
Description of the antenna BITE
CSDU receives antenna BITE data on this arinc 429 input.
CSDU pin Description
MP04A Cockpit audio input 1. High.
MP04B Cockpit audio input 1. Low.
MP05A Cockpit audio output 1. High.
MP05B Cockpit audio output 1. Low.
MP04J Cockpit audio input 2. High.
MP04K Cockpit audio input 2. Low.
MP05J Cockpit audio output 2. High.
MP05K Cockpit audio output 2. Low.
CSDU pin Description
MP02A Data from primary IRS/GNSS A
MP02B Data from primary IRS/GNSS B
MP02J Data from secondary IRS/GNSS A
MP02K Data from secondary IRS/GNSS B
MP06J Data from GNSS to CSDU A
MP06K Data from GNSS to CSDU B
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