Signal Specification, Control Module For Rear Audio Separation
| U= | DC voltage in volts (V) | UAC = | AC voltage in volts (V) |
| Ubat = | Battery voltage (V) | f = | Frequency in Hertz (Hz) |
| Ulow = | Voltage approximately 0 V | t = | Time in seconds |
| PWM = | Pulse width modulated signal as a % | - | - |
SIGNAL TABLE
| Terminal | Signal type | Ignition on | Other |
|---|---|---|---|
| #A1 | Battery voltage supply | Ubat | - |
| #A2 | Right-hand audio (out) audio channel 2 | - | Headset signal channel 2, low level audio |
| #A3 | Left-hand audio (out) audio channel 2 | - | Headset signal channel 2, low level audio |
| #A4 | 15 supply | Ubat | - |
| #A5 | Left-hand audio (out) audio channel 1 | - | Headset signal channel 1, low level audio |
| #A6 | Right-hand audio (out) audio channel 1 | - | Headset signal channel 1, low level audio |
| #A7 | - | - | - |
| #A8 | Loudspeaker signal left-hand (L-) | U = Ulow | Rear loudspeakers, high level audio |
| #A9 | Loudspeaker signal left-hand (R-) | - | Rear loudspeakers, high level audio |
| #A10 | Loudspeaker signal left-hand (R+) | - | Rear loudspeakers, high level audio |
| #A11 | Loudspeaker signal left-hand (L+) | - | Rear loudspeakers, high level audio |
| #A12 | Incoming loudspeaker sound (L+) | - | The control module for rear audio separation receives audio signals from the standard system and processes the sound |
| #A13 | Ground supply | Ulow | - |
| #A14 | - | - | - |
| #A15 | Audio ground | - | - |
| #A16 | - | - | - |
| #A17 | - | - | - |
| #A18 | Channel selector ground | 0 V = no signal at all 5 V = left-hand display screen audio in loudspeaker (master) 7.5 V = right-hand display screen audio in loudspeaker (master) |
The left-hand passenger position sound is always in the left-hand headphone and vice versa |
| #A19 | - | - | - |
| #A20 | - | - | - |
| #A21 | Incoming loudspeaker sound (R-) | Alternating current at sound in center loudspeaker | The control module for rear audio separation receives audio signals from the standard system and processes the sound |
| #A22 | Incoming loudspeaker sound (R+) | - | The control module for rear audio separation receives audio signals from the standard system and processes the sound |
| #A23 | Incoming loudspeaker sound (L-) | - | The control module for rear audio separation receives audio signals from the standard system and processes the sound |
| #A24 | - | - | - |
SIGNAL TABLE
| Terminal | Signal type | Ignition on | Other |
|---|---|---|---|
| #B1 | Infra-red supply | 5 V | Infra-red receiver headsets |
| #B2 | Infra-red audio Hi | Low level | Twisted |
| #B3 | Infra-red audio Lo | Low level | Twisted |
| #B4 | Ground | Ulow | - |