Signal Specification, Digital Audio Broadcast Module (DABM)
GENERAL
All the values given below are between connections stated in column 1 and connection #A1 in column 2 (power ground). This applies unless otherwise indicated in brackets.
NOTE:
It is important to connect the breakout box and check the ground terminals before taking readings.
| U= | DC voltage in volts (V) | UAC = | AC voltage in volts (V) |
| Ubat = | Battery voltage in volts (V) | f = | Frequency in Hertz (Hz) |
| Ulow = | Voltage approximately 0 V | t = | Time in seconds (s) |
| PWM = | Pulse width modulated signal in % | % duty = | Duty cycle (pulse ratio) in percent (%) |
CONNECTOR C1
| Breakout box connection | Control module terminal | Signal type | Ignition on | Ignition off | Miscellaneous |
| #1 | #C1-1 | 30 supply | U = Ubat | U = Ubat | - |
| #2 | #C1-2 | ground, 30 supply | U=Ulow | U=Ulow | - |
CONNECTOR C2
| Breakout box connection | Control module terminal | Signal type | Ignition on | Ignition off | Miscellaneous |
| - | #C2-1 | Antenna signal | - | - | Input signal VHF Band 3 |
| - | #C2-2 | Antenna signal | - | - | Fender |
| - | #C2-3 | Antenna signal | - | - | Input signal Band L |
| - | #C2-4 | Antenna signal | - | - | Fender |
CONNECTOR C3
| Breakout box connection | Control module terminal | Signal type | Ignition on | Ignition off | Miscellaneous |
| - | #C3-1 | Output signal, MOST | - | - | Optical output signal |
| - | #C3-2 | Input signal, MOST | - | - | Optical input signal |