The Woodward 9905-760, also cataloged as the 9905-760 Termination Resistor Module, operates as a dedicated hardware component for communication bus impedance matching within Woodward control networks.

Hardware Specifications

Signal Reflectance Mitigation and Actuator Loop Feedback Response

By imposing precise line-ending matched impedance across communication channels, the 9905-760 module eliminates signal reflections and voltage standing waves on high-speed serial networks. The passive circuit assembly preserves signal edge integrity and transmission clarity to maintain high-speed actuator loop feedback response between primary system controllers and distributed field nodes. Internal resistor arrays are positioned to optimize passive thermal heat sink dissipation profiles during continuous bus signal loading.

Frequently Asked Questions

Q: What primary operational purpose does the Woodward 9905-760 module serve?

A: It provides passive line termination for serial communication buses to suppress line reflections and maintain digital signal integrity.

Q: Does the 9905-760 module require an external auxiliary DC power supply?

A: No, the unit is a passive hardware termination assembly that operates directly on the communication bus lines without active power input.

Q: What are the physical dimensions and total mass of the 9905-760 hardware unit?

A: The module measures 29 cm x 18.7 cm x 5 cm and weighs 0.2 kg.

Field Installation Guidelines

• Install the 9905-760 termination module strictly at the physical end nodes of the serial communication trunk line.
• Verify that power to adjacent field network components is de-energized prior to connecting or securing termination wiring.
• Connect all communication cable shielding to the designated cabinet grounding point using low-impedance grounding connections.
• Ensure terminal block wiring connections are properly torqued to prevent intermittent high-resistance open circuits.