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USB2881/2/3 系统框图主要由信号调理模块、ADC 模块、DIO 模块、自校准模块、FPGA 控制 模块、USB 桥芯片模块组成。 ADC 模块可实现对 12 路差分信号的采集。核心采用两片 16/14/12 位 ADC 转换芯片，每片可实 现 6 通道同步转换，转换速率为 250KHz，输入量程为±10V、±5V。 DIO 模块提供 16 路数字量输入、16 路数字量输出。
指标参数
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seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">模拟量输入seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">通道数seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">差分seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;">12路seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
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seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">精度seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">16seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">位(USB2881) seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;">14位（USB2882） seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">12位（USB2883） |
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seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">采样频率seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">250KS/s |
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seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">校准方式seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">软件自动校准seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
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seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">同步采样seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">是seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
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seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">耦合方式seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">直流耦合seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
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seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">触发源seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">软件内触发、seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;">ATR触发、seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;">DTR触发seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
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seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">ADseline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">量程seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">±seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;">10V、±seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;">5V |
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seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">程控增益seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">lseline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">，seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;">2，seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;">4，seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;">8倍seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
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seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">ADseline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">缓存seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">8Kseline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">字（点）seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;">FIFO存储器seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
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seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">非线性误差seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">±seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;">1.5LSB |
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seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">数字量输入seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">通道数seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">16seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">路seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
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seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">电气标准seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">TTLseline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">兼容seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
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seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">默认上电状态seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">低电平seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
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seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">输入逻辑电平seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">高电平：高达seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;">5V，低至seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;">2V seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">低电平：高达seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;">0.8V，低至seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;">0V |
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seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">过压保护seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">0~5V |
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seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">数字量输出seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">通道数seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">16seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">路seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
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seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">电气标准seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">TTLseline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">兼容seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
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seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">默认上电状态seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">低电平seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
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seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">输入逻辑电平seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">高电平：高达seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;">5V，低至seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;">4.4V seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">低电平：高达seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;">0.4V，低至seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;">0V |
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seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">单通道驱动能力seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">±seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;">4mA |
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seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">总电流驱动能力seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;"> |
seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">±seline;"="" style="margin: 0px; font-size: 13.3333px; line-height: 26px !important;">25mA |
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seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">安装方式 |
seline;"="" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 29px;">seline;"="" style="margin: 0px; font-size: 10pt; line-height: 26px !important;">可配导轨（选配）、平面安装 |
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拥有多条产品线:总线数据采集板卡、分布式采集模块、无线通讯数传采集模块、测控机箱及测控系统控制器、无风扇工业电脑、工业平板电脑、工业主板等。被广泛应用于环境、电力、通讯、航天、等领域。
