Keysight (Agilent) DAQM904A 4 x 8 Two-Wire Matrix Module

The Keysight (Agilent) DAQM904A is a 4×8 two-wire matrix module that delivers flexible signal routing for the DAQ970A and DAQ973A data acquisition mainframes. With 32 crosspoints, this module enables simultaneous connection of multiple instruments to various test points on a Device Under Test. Rows and columns interconnect between modules to build larger matrices—8×8 or 4×16 configurations—supporting up to 96 crosspoints within a single frame.

– Technical Specifications

• Crosspoints: 32 two-wire crosspoints
• Switching Voltage: Up to 300 V
• Switching Current: Up to 1 A
• Scan Rate: 120 channels/second
• Bandwidth: 10 MHz
• Relay Type: Armature relay
• Connection Type: Screw terminals
• Weight: 0.49 kg

– Key Features

• Expandable architecture allows cascade configurations across multiple modules in a single mainframe
• High-speed switching at 120 channels/second supports dynamic test sequences
• 10 MHz bandwidth accommodates analog and mixed-signal routing
• Armature relay contacts rated to 300 V and 1 A for robust industrial applications
• Screw terminal connections ensure secure, field-replaceable wiring

– Typical Applications

• Multi-point signal acquisition and distribution
• Device characterization requiring simultaneous instrument access
• Automated test sequences with fast switching
• Low-voltage and moderate-power circuit testing

– Compatibility & Integration

The DAQM904A installs directly into DAQ970A or DAQ973A mainframes, each supporting up to three modules in any combination. Module interconnection enables matrix expansion without external switching hardware.