NI SCXI-1303 电压输出模块 以太网/串行机箱

NI SCXI-1303 电压输出模块 以太网/串行机箱

SCXI-1303（部件号：777687-03）32通道接线端子推荐用于以下SCXI模块：SCXI-1100/1102/1102B/1102C。该接线端子推荐用于高精度热电偶温度测量应用。NI SCXI-1303 具有 一个 极其 精确 的 热敏电阻 冷 端 温度 传感器， 以及 一个 等温 铜 层， 可 在 用户 使用 热 电偶 完成 测量 时 减少 螺丝 端子 上 的 温度 梯度。 NI SCXI 1303 具有 热电偶 开路 检测、 信号 接地 参考 和 等温 等 特殊 功能。

该接线端子有 78 个螺丝端子，可轻松确保信号连接。32 对螺丝端子连接到 SCXI 模块的 32 个差分输入。一对端子连接到模块上的机箱接地引脚。此外，三个端子连接到SCXI模块OUTPUT和AOREF引脚，以及SCXIbus GUARD。剩余的终端将保存以备将来使用。

SCXI-1303接线端子的电路可帮助用户感知开路热电偶。为了区分是否有任何热电偶打开，用户可以确定匹配的SCXI模块通道是否饱和。NI SCXI-1303 还 具有 上拉 和 偏置 电阻， 通过 在 开 路 通道 的 输入 端 施加 +5 V 电压 来 使 通道 饱和。结果是饱和到正轨。SCXI 1303 可与 10 Ω 和 10 MΩ 偏置电阻一起使用。10 MΩ 电阻用于 SCXI-1102/B/C 模块，而 10 Ω电阻用于 SCXI-1100 模块。偏置电阻器可由用户轻松更换。该器件配备热敏电阻冷端传感器，在 15 至 35 °C 范围内的精度为 0.5 °C，在 0 至 15 °C 范围内的精度为 0.9 °C，在 35 至 55 °C 范围内的精度为 35 至 55 °C。 它在 0 至 55 °C 范围内具有 1.91 至 0.58 V 的输出电压。 NI设备使用NI-DAQ驱动程序软件运行，该软件与LabVIEW和LabWindows/CVI等软件包兼容。 

NI SCXI-1303 电压输出模块 以太网/串行机箱

The SCXI-1303 (Part No. : 777687-03) 32 channel wiring terminals are recommended for the following SCXI modules: SCXI-1100/110102/1102B /1102C. This terminal is recommended for high precision thermocouple temperature measurement applications. The NI SCXI-1303 features an extremely accurate thermistor cold end temperature sensor, as well as an isothermal copper layer that reduces the temperature gradient on the screw terminal when the user completes the measurement with a thermocouple. The NI SCXI 1303 has special functions such as thermocouple open circuit detection, signal ground reference and isothermal.

The terminal has 78 screw terminals for easy signal connection. 32 pairs of screw terminals are connected to the 32 differential inputs of the SCXI module. A pair of terminals are connected to the chassis grounding pins on the module. In addition, three terminals are connected to the SCXI module OUTPUT and AOREF pins, as well as the SCXIbus GUARD. The remaining terminals are saved for future use.

The circuit of the SCXI-1303 terminal helps the user sense the open circuit thermocouple. In order to distinguish whether any thermocouple is turned on, the user can determine whether the matching SCXI module channel is saturated. The NI SCXI-1303 also has a pull-up and bias resistance that saturates the channel by applying a +5 V voltage to the input of the open channel. The result is saturation on track. The SCXI 1303 can be used with 10 Ω and 10 MΩ bias resistors. The 10 MΩ resistor is used in the SCXI-1102/B/C module, and the 10 Ω resistor is used in the SCXI-1100 module. The bias resistor can be easily replaced by the user. The device is equipped with a thermistor cold end sensor with an accuracy of 0.5 °C over 15 to 35 °C, 0.9 °C over 0 to 15 °C, and 35 to 55 °C over 35 to 55 °C. It has an output voltage of 1.91 to 0.58 V in the range of 0 to 55 °C. NI devices run with Ni-DAQ driver software, which is compatible with packages such as LabVIEW and LabWindows/CVI.