Agilent/Keysight DAQM903A

The Keysight DAQM903A is a 20-channel actuator module that integrates directly into DAQ970A and DAQ973A data acquisition mainframes to deliver single-pole, double-throw relay switching for automated test and power management applications. Built on Form C latching relays, the module handles voltage switching up to 300 V, current switching up to 1 A, and power loads up to 50 W across independent channels. Engineers deploy it for power cycling of products under test, controlling indicator and status lights, and actuating external power relays and solenoids.

The module achieves a 10 MHz bandwidth with a 120 channels-per-second scan rate, enabling rapid signal routing in complex test systems. Screw-terminal connections simplify wiring, and modular architecture allows combination with other matrix and multiplexer modules to scale switching capacity for custom applications. Each unit ships with a functional test certificate.

Technical Specifications

• Channels: 20 independent


• Relay Configuration: Single-Pole, Double-Throw (SPDT) latching relays (Form C)


• Switching Voltage: Up to 300 V


• Switching Current: Up to 1 A


• Switching Capacity: Up to 50 W


• Bandwidth: 10 MHz


• Scan Rate: 120 channels per second


• Connection Type: Screw terminals

Key Features

• Independent channel isolation for parallel test operations


• Latching relay design reduces power consumption during idle states


• 10 MHz bandwidth accommodates both DC and low-frequency AC switching


• Modular design integrates into existing DAQ infrastructure


• Scalable architecture supports custom matrix configurations

Typical Applications

• Product power cycling and reset control


• Indicator and status light switching


• External power relay and solenoid actuation


• Multi-channel signal routing in automated test systems


• Data logging with integrated control functions

Compatibility & Integration The DAQM903A operates as a plug-in module for Keysight DAQ970A and DAQ973A mainframes. It can be combined with other switch modules to build larger routing matrices without requiring external relay drivers or interface cards.