TECHNICAL OVERVIE W Keysight DAQ970A Data Acquisition/System
At a fraction of the cost of other standalone data acquisition systems –– 3-slot mainframe with built-in 6½ digit DMM and –– 8 switch and control plug-in modules –– Measures and converts 12 different input signals: temperature with thermocouples, RTDs and thermistors; dc/ ac volts; 2- and 4-wire resistance; frequency and period; dc/ ac current and capacitance –– LAN and USB for easy connectivity to your PC: –– Graphical Web interface for point and click monitor and control –– USB flash drive support to copy
Virtual front panel control via Web interface money The built-in graphical Web interface provides easy access and control of the instrument using a Web browser such as Chrome and Internet Explorer. Using this interface you can configure measurements, define and execute scan lists, or monitor measurement results from anywhere on the network. Simply enter the instrument host name or IP address into the browser URL and gain access to the instrument’s front panel capabilities.
Front Panel at a Glance Label Description 1 USB port 2 On/Standby switch with LED indicator 3 Display 4 Softkeys 5 Measurement operation menu (to control the initiation of the measurements) 6 Measurement configuration menu (to set parameters for measurements) 7 Knob 8 Cursor navigation keypad Rear Panel at a Glance Label Description 1 Slot identifier (100, 200, 300) 2 External trigger input, alarm outputs, channel advance input, and channel close output 3 AC mains input 4 Instru
The Keysight DAQ970A Offers Unequaled Versatility for Your Data Acquisition Applications In the past, you had to make a choice. On the one hand, you could choose the simple operation and low cost of a data logger. On the other hand, you had the flexibility and higher performance of a modular data acquisition system.
And the DAQ970A measures and converts 12 different input signals: –– Temperature with thermocouples, RTDs, and thermistors –– dc and ac volts –– 2- and 4-wire resistance –– Frequency and period –– Capacitance and diode –– Strain What’s more, each channel is independently configurable. This means you can configure channel 1—for dcV, channel 2 for a K-type thermocouple, and channels 3 and 13 for a 4-wire RTD measurement—all on the same module, all in a single scan.
Flexible functionality The DMM is installed inside the chassis rather than in one of the slots, leaving all three mainframe slots free for switch and control modules. You can choose from eight different modules (see page 13) to get the precise functionality you need now—while giving you flexibility for future expansion. The internal DMM gives you the flexibility to measure 12 types of inputs easily and inexpensively.
Customize your Keysight DAQ970A with plug-in modules A complete selection of plug-in modules gives you high quality measurement, switching, and control capabilities to choose from. Modules include both low-frequency and RF multiplexers, a matrix switch, a general-purpose switch, and a multifunction module that includes digital input/output, analog output, and totalizer capabilities.
Keysight quality We know you can’t afford instrument downtime due to hardware failures and unscheduled maintenance. That’s why our engineers designed reliability into the DAQ970A: A rugged enclosure, state-of-the-art surface mount construction throughout, reduced parts counts, and rigorous and thorough testing on all aspects of the product.
Example 3: Thermocouple measurement accuracy Example 4: acV accuracy Calculating the total thermocouple reading error is easy with the DAQ970A—just add the listed measurement accuracy to the accuracy of your transducer. Switching, conversion, and reference junction errors are already included in the measurement specification. The acV function measures the true RMS value of the input waveform, regardless of waveshape. Listed accuracies assume a sinewave input.
DC Current and Other DC Functions 24 Hour 3 Range2 Tacal 1 °C Accuracy ± (% of reading + % of range)1 Characteristics - typical: DC current 1 uA 0.017 + 0.005 10 uA 0.015 + 0.002 100 uA 0.012 + 0.001 Specifications: DC current 1 mA 0.007 + 0.003 10 mA 0.007 + 0.020 100 mA 0.010 + 0.004 1A 0.050 + 0.006 Characteristics - Typical: Diode Test4 5V 0.002 + 0.010 90 Days Tacal 5 °C 1 Year Tacal 5 °C 2 year Tacal 5 °C Temperature Coefficient /°C5 0.040 + 0.005 0.040 + 0.002 0.040 + 0.001 0.050 + 0.005 0.
Characteristics - typical: Capacitance Capacitance7 1.0000 nF 10.000 nF 100.00 nF 1.0000 uF 10.000 uF 100.00 uF Specifications: Frequency Frequency1, 3 100 mV, 1 V, 10 V, 100 V, and 300 V ranges 3 3 Hz – 10 Hz 10 Hz – 100 Hz 100 Hz – 1 KHz 1 KHz – 300 KHz Square wave2 Additional frequency errors (% of reading)1 Aperture (resolution/range) 3 Hz – 40 Hz 40 Hz – 100 Hz 100 Hz – 1 KHz 1 KHz – 300 KHz Square wave2 Characteristics - typical: Temperature Thermocouple E J K N R T Thermocouple E J K N R T 0.
Switch Modules General Number of channels DAQM900A DAQM901A DAQM902A DAQM903A DAQM904A DAQM905A DAQM908A 20 20 + 2 16 20 (SPDT) 4x8 (2 wire) Dual 1x4(50 ohm) 40 (1 wire) 250 ch/s 120 ch/s 120 Ch/s 120 ch/s 60 ch/s 100 ch/s 70 ch/s Yes No Yes Yes5 Yes5 Yes Yes Yes Yes Yes No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No Yes No Yes Yes No No Yes No Yes Yes 300 V 50 mA 2W 300 V 1A 50 W 300 V 1A 50 W 42 V .
DAQM907A Measurement Functionality Digital I/O (Port 1,2) Totalizer Analog outputs Characteristics - typical : [1, 2, 3, 4] DAC (output & readback) Voltage Current Characteristics - nominal DIO Port 1, 2 Vin(L) Vin(H) Vout(L) Vout(H) Vin(H) max Alarming Speed Latency Read/write speed Max count Totalize input Signal level Threshold Gate Input Count reset Read speed DAC 1, 2 Resolution Voltage mode current Current mode compliance Settling time 1. 2. 3. 4.
Characteristics - Nominal: Single Channel Reading Rates to I/O or Internal Memory DAQ970A DAQ970A Int.
Characteristics - Measured: DC and AC Current Burden Voltage at Full Scale. DC current range Burden voltage 1 µA < 0.0011 V 10 µA < 0.011 V 100 µA < 0.11 V 1 mA < 0.11 V 10 mA < 0.027 V 100 mA < 0.27 V 1A < 0.7 V Characteristics - Measured: Internal DMM - Digitizing Sample rate: 50 KHz (Aperture = 20 uS) Sine wave input: Vpeak = Full scale of range Input frequency: 1 KHz Function: Range THD BW (-3 db) DCV: 0.1, 1 V 75 15 KHz DCV: 10 V 82 15 KHz DCV: 100 V 60 15 KHz DCI: 0.
General Characteristics Line power Power supply (Mains supply voltage fluctuation is not allowed to exceed ± 10%) Power line frequency Power consumption Environment Operating environment Operating humidity Operating altitude Storage temperature Mechanical Rack dimensions Bench dimensions Weight Regulatory Safety EMC Acoustic noise - Nominal Triggering conditions External Voltmeter complete Computer interfaces Language Front panel USB host port Math Functions Display Real-time Clock Software available F
Modules specifications The Keysight DAQ970A accuracy specifications already include the switching offset and reference junction errors shown below. These errors are listed separately for determining system error with external measurement devices. Up to three modules, in any combination, can be inserted into a single mainframe.
Multiplexer selection guide Choose between the broad functionality of the DAQM901A, the high speed scanning of the DAQM902A, or the DAQM900A solid-state module the single-ended density of the DAQ908A. These four modules are the only way to connect to the DAQ970A internal DMM. They can be used to scan with external instruments as well. All multiplexer modules employ break-before-make scanning, ensuring only one closed channel (or channel pair) at a time.
el pair) at a time. DAQ901A 20-Channel General Purpose Multiplexer –– 80 ch/s scanning –– Two- and four-wire scanning –– Built-in thermocouple reference junction –– 300 V switching The Keysight DAQM901A is the most versatile multiplexer for general purpose scanning. It combines dense, multifunction switching with 80-channel/second scan rates to address a broad spectrum of data acquisition applications. Two- and four-wire channels can be mixed on the same module.
DAQM908A –– 40-Channel Single-Ended Multiplexer –– 80 ch/s scanning –– Single-wire switching for common low applications Built-in thermocouple reference junction Use the Keysight DAQM908A for the greatest density in common low applications, such as battery test, component characterization, and benchtop testing. Each module switches 40 one-wire inputs. All two-wire internal measurements except current are supported. The module low connection is isolated from earth and can float up to 300 V.
DAQM904A 4x8 Two-wire Matrix Switch Col 1 H L Col 2 H Col 8 L H –– 32 two-wire crosspoints –– 300 V, 1 A switching L H L The Keysight DAQM904A gives you the most flexible connection path between your device under test and your test equipment, allowing different instruments to be connected to multiple points on your DUT at the same time. H L H L Rows or columns may be connected between multiple modules to build 8x8, 4x16 or larger matrices, with up to 96 crosspoints in a single frame.
50 Ω MUX typical AC performance graphs Insertion loss VSWR Crosstalk 0 dB 1.80 -1 dB 1.60 -2 dB 1.40 -60 dB -3 dB 1.20 -80 dB -4 dB 1.00 10 MHz 100 MHz 1 GHz 3 GHz 10 MHz -20 dB -40 dB -100 dB 100 MHz 1 GHz 3 GHz 10 MHz 100 MHz 1 GHz 3 GHz 100 MHz 1 GHz 3 GHz Direct to card Using provided adapter cables 0 dB 1.80 -1 dB 1.60 -2 dB 1.40 -3 dB 1.20 -80 dB -4 dB 1.
Digital input/ouput Use the digital outputs with an external power supply to control microwave switches and attenuators, solenoids, power relays, indicators, and more. Use the digital inputs to sense limit switch and digital bus status. There are no complex handshake modes; reads and writes are initiated either from the front panel or the bus. Port 1, 2 Vin(L) Vin(H) Vout(L) Vout(H) Vin(H) max Alarming Speed Latency Read/write speed 8 bit, input or output, nonisolated < 0.8 V (TTL) > 2.0 V (TTL) < 0.
Rack mounting and dimensions To rack mount a single instrument, order the adapter kit (part number: DAQA190A-FG). To rack mount two instruments side-by-side, order thelock-link kit (part number: DAQA194A-FG) and flange kit (part number: DAQA191A-FG). Find us at www.keysight.
Ordering Information Accessories Mainframe DAQ970A Option A6J Data Acquisition/System Mainframe ANSI Z540 compliant calibration Modules DAQM900A DAQM901A DAQM902A DAQM903A DAQM904A DAQM905A DAQM907A DAQM908A 20-Channel Solid-state multiplexer 20-Channel armature multiplexer 16-Channel reed multiplexer 20-Channel actuator/general purpose switch 4 x 8 Two-wire matrix switch Dual 4-Channel RF multiplexer, 50 Ohms Multifunction module 40-Channel single-ended multiplexer 11062A BV0006B 34307A 34308A 3
