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Cdaq 9174

Manufactured by National Instruments
Sourced in United States

The CDAQ-9174 is a CompactDAQ chassis that provides connectivity for up to four C Series I/O modules. It features a rugged and compact design, supporting a wide range of sensor and signal types. The CDAQ-9174 offers a modular and scalable solution for data acquisition and control applications.

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15 protocols using cdaq 9174

1

Piezoelectric Fiber Energy Harvesting Measurement

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The electrical measurement device consists of several devices. The voltage part is measured by the NI-9234 voltage measurement module in the USB data acquisition device of NI cDAQ-9174 and the NI-9237 strain/bridge input module (National Instruments, Austin, TX, USA) to measure the output voltage of the fiber energy collector and the strain at the time of tapping, as shown in Figure 4a. The strain relief/bridge input module includes the CHIEF TB-120 bridge terminal block. The single-axis three-wire strain gauge is connected to the bridge terminal block by a quarter-bridge method, which the strain gauge resistance is about 120 Ω and the gauge factor (GF) is about 2. The measurement can be conducted by attaching the strain gauge to the energy acquisition device, as shown in Figure 4b. The experiment is performed with FleXense software (Chief SI, Hsinchu, Taiwan), and the signal waveforms and values on the computer screen are used to record the voltage data generated during the piezoelectric fiber deformation transients, as shown in Figure 4c. The current is measured with the CH Instruments 611C microelectric flow meter, which has a precision of 10–12 A. Finally, connect the positive and negative terminals of the sample to the input of the instrument for measurement.
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2

Thermoelectric Textile Characterization

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The thermoelectric
textile was placed on a variable temperature hot plate (HP60, Torrey
Pines Scientific Inc). Surface-mounted K-type thermocouples (Omega
Engineering) were placed on the top and bottom of the textile, to
monitor the surface temperatures via a National Instruments cDAQ 9174
with an internal temperature reference. A cooling plate (Staychill)
was placed on top of the thermoelectric textile, and thin sheets of
Kapton (50 μm thickness) were placed on the top and bottom of
the textile to prevent electrical short circuits. The generated voltage
was recorded by a Keithley 2400 SMU, which also acted as a variable
load by drawing current from the textile device.
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3

Cyclic Uniaxial Loading of 3D Printed Samples

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A TestRecources Universal Testing Machine was used to apply the cyclic uniaxial loading to the 3D printed samples. A National Instruments cDAQ-9174 chassis was used as a recording device. Also, a NI9220 module with 1 GΩ impedance was used to measure the generated voltage signals. A low-noise current amplifier (SR570, Stanford Research Systems) was used to measure the currents generated by the SCMM prototypes. A LabVIEW program was developed to control and synchronize measurements from all modules and store readings in the host computer.
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4

Chordal Force Measurement Technique

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Chordal force was measured in a single secondary (strut) chord using a custom developed force transducer (Fig. 6). The force gauge utilizes a specially designed cantilever frame for chordal studies and is configured for a full Wheatstone bridge strain gauge measurement for optimal signal-to-noise ratio. The frame attaches to the chord at two points via silk suture before the chord is cut in between, leaving the frame “bridging” the cut chord. The details of this gauge, including the design and construction, are outside the scope of this study and will be presented in a future publication. Data from this force gauge was acquired with a NI (National Instruments, Austin, Texas) cDAQ 9174 acquisition chassis with a NI 9237 strain gauge input module through a custom VI.
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5

Whole-Cell Patch Clamping with Computer-Controlled Navigation

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Whole-cell patch clamping was performed as described previously (Kodandaramaiah et al., 2016 (link)). Briefly, an Autopatcher 1500 (Neuromatic Devices) was used to provide computer-controlled pressure and measure resistance for both in vitro and in vivo experiments. Both in vitro and in vivo experiments were performed with Multiclamp 700B amplifiers (Molecular Devices) and signals were digitized at 20kHz (cDAQ-9174, National Instruments), and recorded in PClamp 10. All whole-cell recordings were performed in current clamp mode.
As in our previous work (Stoy et al., 2017 (link)) where we demonstrated an algorithm for navigation around blood vessels during regional pipette localization (RPL), resistance measurements were performed throughout RPL, rather than only before and after localization. Briefly, during localization to the region of interest (cortex or thalamus for this study), the pipette resistance was recorded in the aCSF on the surface of the tissue by applying a 20 mV amplitude, 128 Hz square wave at 50% duty cycle and stored as a moving average of four periods. If an obstruction was encountered during RPL (noted by an increase in resistance above a threshold), a sequence of motion and pressure control steps were issued to navigate electrodes efficiently around putative blood vessels, return to the original pipette axis, and continue neuron hunting.
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6

Compression Testing of Tooth-Bone Interface

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Compression tests were conducted (Fig. 2). The materials of the specimen were CNC-milled zirconia (VITA YZ, VITA Zahnfabrik, Germany) for the tooth model (210 GPa) and PMMA (VITA CAD-Temp®, VITA Zahnfabrik, Germany) for the cylindrical bone blocks (2.8 GPa). An adhesive (3 M U200, 3 M, USA) was applied to bond the tooth model and bone block. The specimen was tested in a universal testing machine (AG-I, Shimadzu Corp., Japan) at 2 N/s until 400 N (a moderate human bite force was chosen) was achieved, which was then maintained for 60 s. Strain gauges (KFGS-02-120-C1-11, Kyowa Electronic Instruments Co., Ltd. Japan) were attached to the mesial side (Strain 1) and distal side (Strain 2) of the bone block. The data-acquisition system, including a 4-slot USB chassis (cDAQ-9174, National Instruments, USA) and an 8-channel capture module (NI-9235, National Instruments, USA), was used to record the strain values generated during the loading. The measured strains were compared with the results of a finite element simulation that used the same experimental setting.

An illustration of validation experiment model and the placements of strain gauges is shown on the top. The two photos on the bottom show the real setup

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7

Whisker Movement Measurement Protocol

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Whisker movement was elicited in each subject by providing a scented stimulus (chocolate milk). The laser micrometers themselves were connected to a 32-Channel Digital I/O Module (NI 9403, National Instruments, Dallas, Tx), which received digital output from the laser micrometers. The I/O module was connected to a PC through a CompactDAQ chassis (cDAQ-9174, National Instruments, Dallas, Tx). The I/O module acquired the laser micrometer signal at a sampling rate of 1 kHz. LabVIEW (LabVIEW Full Development System, National Instruments, Dallas, Tx) software was used as the interface for data acquisition.
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8

Chordal Force Measurement Apparatus

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Chordal force was measured in a single secondary (strut) chord using a custom developed force transducer (Fig. 6). The force gauge utilizes a specially designed cantilever frame for chordal studies and is configured for a full Wheatstone bridge strain gauge measurement for optimal signal-to-noise ratio. The frame attaches to the chord at two points via silk suture before the chord is cut in between, leaving the frame “bridging” the cut chord. The details of this gauge, including the design and construction, are outside the scope of this study and will be presented in a future publication. Data from this force gauge was acquired with a NI (National Instruments, Austin, Texas) cDAQ 9174 acquisition chassis with a NI 9237 strain gauge input module through a custom VI.
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9

Whisker Movement Measurement Protocol

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Whisker movement was elicited in each subject by providing a scented stimulus (chocolate milk). The laser micrometers themselves were connected to a 32-Channel Digital I/O Module (NI 9403, National Instruments, Dallas, Tx), which received digital output from the laser micrometers. The I/O module was connected to a PC through a CompactDAQ chassis (cDAQ-9174, National Instruments, Dallas, Tx). The I/O module acquired the laser micrometer signal at a sampling rate of 1 kHz. LabVIEW (LabVIEW Full Development System, National Instruments, Dallas, Tx) software was used as the interface for data acquisition.
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10

Piezoelectric Composite Structure for Directional Wave Propagation

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The fabricated composite structure is realized from a 0.5-mm-thick PLA layer with 150 glued (using 3M DP270 epoxy adhesive) piezoelectric disks. Each of these piezoelectric disks has a diameter of 7 mm and a thickness of 0.5 mm (PZT4). For each circuit attached to a PZT disk, negative capacitance C′ = − 2 nF is obtained using R1 = 10 ohms and R2 = 20 ohms, C0 = 1 nF, and R0 = 1 megohms. On/off switching of the circuits is accomplished using three output channels of a general-purpose data acquisition system (National Instruments cDAQ-9174 with a digital output module). A LabVIEW script then generates three output signals with the desired delay. A Polytec PSV-400 scanning laser Doppler vibrometer measures the resulting out-of-plane wavefield velocity, repeating each measurement 10 times (to reduce the influence of noise). A bonded input PZT disk (PZT4) produces an incident wave in response to a 150-mV (peak-to-peak) burst sinusoidal signal, using a function generator (Agilent 33220A) coupled to a voltage amplifier (B&K1040L). Proper triggering of the laser measurements allows full reconstruction of the out-of-plane velocity field. To show edge propagation only along the domain wall, absorbing patches have been used near the source and around the sample in Fig. 4.
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