# Keysight DAQM909A 4-Channel 24-bit Simultaneous Sampling Digitizer Module # Keysight DAQM909A 4-Channel 24-bit Simultaneous Sampling Digitizer Module ## Key Features At A Glance - 3-slot mainframe with built-in 6½-digit (22-bit) internal DMM - 0.003% basic 1-year DC voltage accuracy with ultra-low reading noise - Scan rates up to 450 channels/sec; up to 120 channels per system - Measures 12 input signal types: temperature, DC/AC volts, resistance, frequency/period, DC/AC current, and capacitance - Nine plug-in switch, RF, and control modules including a 4-channel simultaneous-sampling 24-bit digitizer - LAN and USB standard for connectivity; GPIB included on the DAQ973A - 4.3-inch color display with numeric, bar graph, trend chart, and histogram views - Up to 1 million points nonvolatile scanning memory; code compatible with 34970A/34972A The Keysight DAQ970A/DAQ973A is a 3-slot data acquisition system mainframe with a built-in 6½-digit DMM. It takes the measurement engine from a high-performance benchtop DMM and embeds it inside a compact, modular mainframe, combining proven measurement performance, universal inputs with built-in signal conditioning, and modular flexibility in a low-cost data acquisition package. The system serves equally as a low-cost data logger and as a data acquisition front end for automated test. As a data logger it monitors multiple signals such as temperature and voltage over extended periods to identify irregularities, with example applications including environmental chamber monitoring, component inspection, benchtop testing, process troubleshooting, and temperature profiling. The single-ended DAQM908A module targets applications such as battery test and component characterization. ## Brand Heritage Keysight Technologies traces its test-and-measurement lineage to Hewlett-Packard, whose instrument business was spun off as Agilent Technologies in 1999. Agilent's electronic measurement division then became Keysight Technologies in 2014. ## Compare Other Models in This Series The DAQ970A/DAQ973A is offered as two 3-slot mainframes that share the same built-in 6½-digit (22-bit) internal DMM, the same nine plug-in modules, and the same 4.3-inch color display. Both scale from 4 to 120 channels and deliver 0.003% basic 1-year DC voltage accuracy with scan rates up to 450 channels per second. Both mainframes are code compatible with the 34970A/34972A and ship with BenchVue DAQ software included. The internal DMM is installed inside the chassis rather than in a slot, leaving all three module slots free for switching and control modules. Each new model below links to its own dedicated product page with condition-matched pricing. Select the mainframe that fits your interface and budget requirements; the shared specifications shown here apply across the family. The DAQ973A is the GPIB-equipped mainframe, adding a built-in GPIB (IEEE-488) interface alongside the LAN and USB found on both models — useful for integrating into existing GPIB-based automated test systems. The primary difference between the two mainframes is the remote-control interface set. The DAQ970A provides built-in Gigabit LAN and USB 2.0, while the DAQ973A adds a built-in GPIB interface on top of LAN and USB. See the comparison table for the per-model interface details. Reading-rate behavior also differs by interface: GPIB data-out throughput on the DAQ973A is specified separately from the LAN and USB rates shared by both models. Otherwise the measurement functions, module compatibility, channel counts, and accuracy specifications are identical across the family. Model Type Channels Max Voltage **DAQM909A** 4-ch 24-bit Digitizer (simultaneous sampling) 4 36 Vpk DAQ970A 3-Slot DAQ Mainframe (USB, LAN) Up to 120 300 V DAQ973A 3-Slot DAQ Mainframe (USB, LAN, GPIB) Up to 120 300 V DAQM900A 20-ch Multiplexer (solid state) 20 120 V Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below. ## Product Core & Specifications Specification Value Measurement Functionality ADC per channel 800 kSa/s @ 24-bit Range (Hi, Lo input to Earth) 0.3 Vpk, 1 Vpk, 3 Vpk, 18 Vpk Range (Differential input) 0.6 Vpk, 2 Vpk, 6 Vpk, 36 Vpk Range (Differential input – sinewave Vrms) 0.42 Vrms, 1.4 Vrms, 4.2 Vrms, 25 Vrms Residual noise (20 Hz – 20 kHz) 7 µVrms, 16 µVrms, 52 µVrms, 175 µVrms IEPE current source OFF or ON, ON (2 mA – 4 mA) IEPE current source compliance voltage 20 V Trigger count 1 to 85k Sample count 1 to 16M Pre-trigger count 0 to sample count Trigger arm event (System) IMM, Scan-sweep, Alarm-# Trigger event (channel) Software, IMM, Level/Slope Trigger event (same module) External/Slope, Chan-# Trigger event (module-module) Any Chan-# External trigger input (one per module) TTL compatible External trigger delay 0 – 1000 s, 1 µs steps External trigger latency 1-sample External Trigger-In terminals Screw terminal (≥ 20-gage wire) Measurement input terminals Screw terminal (≥ 20-gage wire) Frequency or Time domain anti-alias filters Yes Time-stamped measurements Yes (Acoustic Start) Acquisition memory/channel 16M to 48M Samples Log multiple digitized records (volatile) Yes Automatic file copy to flash drive Yes Characteristics: Typical Accuracy (DC) 0.017% of readings + 0.004% of range (ACAL) THD (1 kHz) \-103 dB SFDR (1 kHz) \-105 dB THD (20 Hz - 20 kHz) \-83 dB SFDR (20 Hz - 20 kHz) \-85 dB Characteristics: Nominal Flatness (dc - 20 kHz) 0.1 dB Input impedance (Hi or Lo to Earth) 1 MΩ || 400 pF Single Ended (SE) Lo-Earth 150 Ω Coupling AC, DC A/D converter (per channel) 24-bit Delta-Sigma Sample rate (Time domain) 800 k / 2^n, n = 0,1,2,…9 Sample rate (Frequency domain) 100 k / 2^n, n = 0,1,2,…6 Acquisition bandwidth (Time domain, -3 dB) 0.2 \* Fs or 125 kHz max Acquisition bandwidth (Frequency domain, -0.1 dB) 0.4 \* Fs or 30 kHz max Analog bandwidth (-3 dB) 125 kHz (measured) Channel to channel gain match (1 kHz) 0.003 dB Channel to channel phase match (1 kHz) 0.045º Channel to channel cross-talk (1 kHz) \-100 dB Common mode input voltage (0.3, 1, 3 Vpk ranges) ± 8 V Common mode input voltage (18 Vpk range) ± 18 V Common mode rejection 60 dB (dc – 1 kHz, DIFF in) Overvoltage protection ± 42 V > **Important:** Maximum input on the AC voltage function: 250 V DC, 300 Vrms. DC voltage input protection is 300 V on all ranges. > **Important:** The mainframe is shipped without plug-in modules. The internal 6½ digit DMM is accessible only through the DAQM900A, DAQM901A, DAQM902A, and DAQM908A low-frequency multiplexers, so at least one such multiplexer module must be ordered separately to make measurements with the system. > **Important:** For DC current measurements with the DAQM902A, user-provided shunt resistors are required. > **Important:** Bridge strain measurements require an external power supply and bridge completions; thermocouple, RTD, and thermistor sensors are not included and must be selected and ordered separately. > Recommended pairing: add the DAQM909A 4-channel simultaneous-sampling 24-bit digitizer to unlock BenchVue DAQ frequency-domain (FFT, THD, THD+N, SINAD) and time-domain measurements. ValueTronics supplies both new and used test and measurement equipment. New units ship factory-sealed, exactly as received from the manufacturer; every used unit is inspected and functionally verified in-house at our 20,000 sq ft secure facility in Elgin, Illinois before it ships. Our Test Architects can help you select the condition, calibration, and configuration that fit your application. **Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.** ## Details - **Price:** 2456.0 USD - **Vendor:** Keysight - **Type:** Module - **Tags:** 909, Agilent, consignment-active, DAQM909, DAQM909A, Data Log, Factory New, Inc., Keysight, Keysight Technologies, Mainframe, Manufacturers, Model 909, Module, Other Equipment, product_manual_group_1, product_manual_group_3, Product_new ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 2456.00 USD | In stock | ## Images - DAQM909A Keysight Technologies Module --- > Source: [ValueTronics](https://valuetronics.com/products/daqm909a-keysight-module-new) > Updated: 2026-06-02