This document explains how to connect to the NI 9361. Before you begin, complete the software and Note hardware installation procedures in your chassis documentation. The guidelines in this document are specific to Note the NI 9361. The other components in the system might not meet the same safety ratings.
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This category is for measurements of voltages from specially protected secondary circuits. Such voltage measurements include signal levels, special equipment, limited-energy parts of equipment, circuits powered by regulated low-voltage sources, and electronics. 4 | ni.com | NI 9361 Getting Started Guide...
CAT III, or CAT IV. Safety Guidelines for Hazardous Locations The NI 9361 is suitable for use in Class I, Division 2, Groups A, B, C, D, T4 hazardous locations; Class I, Zone 2, AEx nA IIC T4 and Ex nA IIC T4 hazardous locations; and nonhazardous locations only.
Zone 2 hazardous locations, in ambient temperatures of -40 °C ≤ Ta ≤ 70 °C. If you are using the NI 9361 in Gas Group IIC hazardous locations, you must use the device in an NI chassis that has been evaluated as Ex nC IIC T4, Ex IIC T4, Ex nA IIC T4, or Ex nL IIC T4 equipment.
Some products are Lloyd’s Register (LR) Type Approved for marine (shipboard) applications. To verify Lloyd’s Register certification for a product, visit ni.com/certification and search for the LR certificate, or look for the Lloyd’s Register mark on the product. 8 | ni.com | NI 9361 Getting Started Guide...
EMC performance is attained. Preparing the Environment Ensure that the environment in which you are using the NI 9361 meets the following specifications. Operating temperature -40 °C to 70 °C...
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Refer to the device datasheet on ni.com/manuals Note for complete specifications. Connecting the NI 9361 The NI 9361 provides connections for eight digital input channels for the embedded counters. 10 | ni.com | NI 9361 Getting Started Guide...
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Digital input signal connection for singled-ended measurements and positive digital input signal connection for differential measurements Negative digital input signal connection for differential measurements No connection Vout Voltage supply output connection Vsup Voltage supply input connection 12 | ni.com | NI 9361 Getting Started Guide...
Connecting an External Power Supply You can optionally connect an external power supply to the NI 9361 to provide current for the devices that you connect to the module. Install a 2 A maximum, fast-acting fuse between the external power supply and the Vsup terminal.
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You can connect single-ended devices, such as TTL or CMOS to the NI 9361. For single-ended connections, connect the device out to the DI+ terminal on the NI 9361. Do not connect the DI- terminal on the NI 9361 for single-ended connections.
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NI 9361 An open collector device does not actively drive the signal high and relies on an external pull-up. The NI 9361 provides a 5 V pull-up on each DI+ pin that can be enabled individually to pull the signal high.
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– DI0– NI 9361 The NI 9361 measures the difference between the DI+ and DI- terminals to determine if that difference is greater or less than the digital logic levels. If the difference between the terminals is within the input high range, the channel registers as high. If the...
(EMC) and product safety. You can obtain the DoC for your product by visiting ni.com/certification. If your product supports calibration, you can obtain the calibration certificate for your product at ni.com/calibration. 24 | ni.com | NI 9361 Getting Started Guide...
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