Transducer Interface

Overview

The Transducer Interface is a single connector for attaching the acoustic communications transducer. Refer to the top connector locations figure for its physical location.

Transducer Electrical Connections

All signal directions are relative to the OEM modem.

Transducer Interface schematic connections.

Transducer Interface Electrical Pinout

Pin Number	I/O	Pin Name	Notes
1	O	TRANSDUCER_OUT_P	Transducer output
2	P	GND	Board ground
3	P	GND	Board ground

Transducer wiring

Connect the transducer between pins 1 and 3, with the shield, if present, connected to pin 2.

Transducer Hardware Components

The Transducer Interface uses a Molex Micro-Fit 3.0 connector, P/N 0436450300, or equivalent. The recommended contacts are Molex P/N 0462355001, suitable for 20–24 AWG wire.

Transducer Interface user-side Molex connector.

Transducer Interface Components and Part Numbers

Part Number	Manufacturer	Description
0436450300	Molex	Micro-Fit 3.0 3-position connector receptacle, 3.0 mm pitch
0462355001	Molex	Micro-Fit 3.0 20–24 AWG gold-plated, lubricated sockets
0638190000	Molex	Micro-Fit 3.0 hand crimp tool
2147611215	Molex	Pre-crimped Micro-Fit 3.0 lead, 450 mm length

Mating Cable Notes

High-voltage transducer connection

The Transducer Interface carries high voltage during modem transmissions. Voltages of hundreds to thousands of volts peak-to-peak can be present. Maintain proper clearance between exposed metal on this interface and all other metal.

Attach or detach the interface only while power is disconnected from the OEM modem to avoid electrical damage.