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4in，1out,difference

LR 618A

  • 4in，1out,difference

  • LR 618A  is a data acquisition card specifically designed for production line testing.

    The LR 618A acquisition module consists of 4 analog input channels and 1 analog output channel. It features enable/disable IEPE constant-current excitation and switchable AC/DC coupling, making it suitable for conditioning IEPE-powered sensors such as microphones, artificial ears, and accelerometers.

    Ideal for acoustic quality analysis, electroacoustic analysis, vibration analysis, NVH analysis, and other demanding measurement applications requiring the capture of sound and vibration data.


  • Description
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Description

Specifications

ParameterValue
Number of analog input channels4
Number of analog output channels1
IEPE channel4-channel (built-in the collection front end )
IEPE power supply4mA
Product dimensions L*W*H (mm)24 × 142 × 100 (excluding BNC connectors and positioning pillar length)
Interface typeBNC
Operating temperature-20℃ - 50℃
Coupled modeAC/DC

AI Specifications

AI Parameters

ADC Precision

24 Bit

ADC Type

Δ-Σ

Sample Rate Range    Hz

1k - 192k

FIFO

1024

Mode Of Data Transmission

DMA

Input Range

+/- 5Vrms （Measurement ranges 1Vrms、5Vrms）

Input Impedance

Input Positive Terminal to Ground: 200Kohm

Gain Error

AC coupling +/-0.03 dB      DC coupling +/-0.01 dB   

Flatness20Hz - 20kHz，Value 0.09dB        5Hz - 50kHz，  Maximum Value 0.08dB 

AI Idle noise (uVrms)

Sample Ratefs=48kS/s
fs=96kS/s
Maximum Value8
11
PS：[1]Short-circuit source impedance less than 50 ohms，Operating temperature of 23±5 degrees Celsius，AC coupling，Linear weighting，1Vrms

AI SNR (dB)

Sample Ratefs=48kS/s
fs=96kS/s
Maximum Value104
101

PS：[1]Single-ended Input，AC Coupling，Input Signal of 1kHz Sine Wave，5Vrms Range，2.5Vrms

        [2] Bandwidth 22.4k、45k

        [3] Linear Weighting

AI Dynamic Range (dB)

Sample Ratefs=48kS/s
fs=96kS/s
Maximum Value110
110

PS：[1]Single-ended Input，AC Coupling，Input Signal of 1kHz Sine Wave，5Vrms Range，2.5Vrms

        [2] Bandwidth 22.4k、45k

        [3] Linear Weighting，SFDR Testing Method

AI THD+N (dB)

Sample Ratefs=48kS/s
fs=96kS/s
Maximum Value-102
-99

PS：[1] Single-ended Input，AC Coupling，Input Signal of 1kHz Sine Wave，5Vrms Range，2.5Vrms

        [2] Bandwidth 22.4k、45k

        [3] Linear Weighting，SFDR Testing Method

AI THD (dB)

Sample Ratefs=48kS/s
fs=96kS/s
Maximum Value-109-109

PS：[1] Single-ended Input，AC Coupling，Input Signal of 1kHz Sine Wave，5Vrms Range，2.5Vrms

        [2] Bandwidth 22.4k、45k

        [3] Linear Weighting


AO Specifications

AO Parameters

DAC Precision

24 Bit

Sample Rate Hz

1k - 192k

Output Range

+/- 5Vrms （Measurement ranges 1Vrms、5Vrms）

Gain Error

AC : +/- 0.03dB   DC : +/-0.1dB

Output Impedance

Input Positive Terminal to Ground: 75 ohm

Flatness

20Hz - 20kHz，Maximum Value 0.1dB   5Hz - 50kHz， Maximum Value 0.15dB

AO Idle noise (uVrms)

Sample Ratefs=48kS/s
fs=96kS/s
Maximum Value2028
PS：[1]Data Acquisition Device Impedance Greater Than 1 Mohm，Working temperature 23±5℃，1Vrms gear

AO SNR (dB)

Sample Ratefs=48kS/s
fs=96kS/s
Minimum Value9895

PS：[1]Single-ended Output，AC Coupling，Output Signal of 1kHz Sine Wave，5Vrms range，2.5Vrms

        [2]Bandwidth 22.4k、45k

        [3]Linear Weighting

AO Dynamic Range (dB)

Sample Ratefs=48kS/s
fs=96kS/s
Minimum Value102101

PS：[1]Single-endedOutput，AC Coupling，Output Signal of 1kHz Sine Wave，5Vrms range，2.5Vrms

        [2]Bandwidth 22.4k、45k

        [3]Linear Weighting，SFER Testing Method


AO THD+N (dB)

Sample Ratefs=48kS/s
fs=96kS/s
Maximum Value-100-97

PS：[1]Single-ended Output，AC Coupling，Output Signal of 1kHz Sine Wave，5Vrms range，5Vrms

        [2]Bandwidth 22.4k、45k

        [3]Linear Weighting


AO THD+ (dB)

Sample Ratefs=48kS/s
fs=96kS/s
Maximum Value-120-122

PS：[1]Single-ended Output，AC Coupling，Output Signal of 1kHz Sine Wave，5Vrms range，5Vrms

        [2]Bandwidth 22.4k、45k

        [3]Linear Weighting

Dimension（unit：mm）

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Ordering Information

PNModelDescription
931006-01LR 618AData Acquisition Card
931002-01LR 101AAC Power Adapter
931001-01LR 128U8‑slot Base, USB Bus
730002-030102A030BNC Plug to BNC Plug,cable jacket diameter 1.9mm,blue PFA low noise cable,high temperature resistance 250℃, length 3.0m
730002-060 102A060BNC Plug to BNC Plug,cable jacket diameter 1.9mm,blue PFA low noise cable,high temperature resistance 250℃, length 6.0m
730002-090 102A090BNC Plug to BNC Plug,cable jacket diameter 1.9mm,blue PFA low noise cable,high temperature resistance 250℃, length 9.0m
730002-000102A000BNC Plug to BNC Plug,cable jacket diameter 1.9mm,blue PFA low noise cable,high temperature resistance 250℃, Customizable length


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