Agilent/Keysight DAQM907A

The Keysight DAQM907A is a multifunction I/O module designed for the DAQ970A and DAQ973A Data Acquisition Systems. It expands mainframe capabilities with dual 8-bit digital ports, a 26-bit gated totalizer input, and two configurable analog outputs - enabling precise control and monitoring across industrial, test, and measurement applications. All digital and event inputs support continuous alarm evaluation independent of scan cycles.

Technical Specifications

• Two 8-bit digital input ports and two 8-bit digital output ports


• Digital outputs control external devices: microwave switches, attenuators, solenoids, power relays, indicators


• Digital inputs monitor limit switches and digital bus status


• Switching voltage: 42 V


• Output current rating: 400 mA


• Simple read/write operation from front panel or bus - no handshake modes required Totalizer Input


• Gated totalizer, 100 kHz maximum frequency


• 26-bit resolution


• Counts events from photo interrupters, limit switches, Hall-effect sensors


• Maintains continuously updated total accessible via front panel or program


• Runtime to overflow: approximately 45 minutes at full speed


• TTL-threshold triggering; counts only when both terminals enabled


• Includable in scan operations Analog Outputs


• Two independent analog outputs


• ±12 V voltage mode or ±24 mA current mode per output


• 16-bit resolution


• Sources bias voltages, controls programmable power supplies, provides control setpoints


• Two dedicated sensing channels for real-time monitoring of sourced voltage or current


• Direct programming in volts or milliamps Integration


• Single earth-referenced module


• Screw terminal connectivity


• Compatible with Keysight DAQ970A and DAQ973A mainframes


• Digital, totalizer, and sensing inputs integrate into system scans


• Alarm limits continuously evaluated and logged independent of scan interval

Key Features

• Flexible digital control: 16 total I/O lines for external device switching and status monitoring


• Extended event counting: 26-bit totalizer eliminates frequent overflow in long-duration tests


• Dual-mode analog sourcing: voltage and current outputs with integrated feedback sensing


• Asynchronous alarm capture: digital and counter thresholds monitored continuously


• Expandable within DAQ system architecture for multi-module configurations

Typical Applications

• Process control and device switching in automated test systems


• Event logging from mechanical sensors and digital transducers


• Programmable voltage/current bias sourcing for component characterization


• Industrial monitoring with continuous alarm detection and data logging

Compatibility & Integration The DAQM907A integrates directly into Keysight DAQ970A and DAQ973A systems, inheriting their scanning and configuration flexibility. All inputs - digital, totalizer, and analog sensing - participate in programmed scans or operate independently for alarm monitoring.