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195929B-01L

This device features 4 RS485/RS422 ports, supports up to 3.6864 Mbps, and offers robust ESD protection and power efficiency.

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    Description

    The device’s part numbers are 779892-01, 779892-02, and 779892-03, indicating multiple versions or configurations available to suit various needs. It features a 4-Port configuration, compatible with RS485/RS422 communication standards, making it versatile for a range of industrial applications.

    It supports a maximum baud rate of 3.6864 Mbps, allowing for high-speed data transmission. The device is designed with data line ESD protection of ±15 kV, safeguarding against electrostatic discharges that could potentially damage the device. Furthermore, it can support a maximum cable length of 1.2 km (4,000 ft.), enabling extended connectivity options for large-scale deployments.

    In terms of power efficiency, the device’s power consumption is notably low, with a maximum of 0.5 Watts in active mode and just 50 μWatts in standby or sleep mode. It requires an external power supply of 3.5 Watts (max) from a +8 to +28 VDC source, which is modest for its capabilities.

    The device also boasts port-to-earth ground isolation of 60 VDC continuous, and can withstand isolation levels of up to 1000 Vrms, ensuring robust protection against voltage spikes and surges. The connector type used is a four-position, female pigtail; DB-9 male front panel connector, providing flexibility in connections.

    With a weight of 5.4 oz., the device is relatively lightweight, facilitating easy installation and integration into systems. It operates within a temperature range of –40 to 70 °C, and can be stored in conditions ranging from –40 to 85 °C, ensuring reliability and durability in harsh environmental conditions.

    Question 1: What RS standards does the NI-9871 support?
    Answer 1: Supports RS485/RS422 standards.

    Question 2: What is the max baud rate for the NI-9871?
    Answer 2: Max baud rate is 3.6864 Mbps.

    Question 3: How much ESD protection does NI-9871 offer?
    Answer 3: Offers ±15 kV ESD protection.

    Question 4: What is the power consumption of NI-9871 in active mode?
    Answer 4: Max 0.5 Watts in active mode.

    Question 5: What is the NI-9871’s operation temperature range?
    Answer 5: Operates from –40 to 70 °C.

    Specification Details
    Part Numbers 779892-01, 779892-02, 779892-03
    Ports 4-Port, RS485/RS422
    Maximum Baud Rate 3.6864 Mbps
    Data Line ESD Protection ±15 kV
    Maximum Cable Length 1.2 km (4,000 ft.)
    Power Consumption (Active) 0.5 Watts (max)
    Power Consumption (Standby/Sleep) 50 μWatts (max)
    External Power Supply 3.5 Watts (max) from +8 to +28 VDC
    Port-to-Earth Ground Isolation 60 VDC continuous
    Withstand Isolation Up to 1000 Vrms
    Connector Type Four-position, female pigtail; DB-9 male front panel connector
    Weight 5.4 oz.
    Operating Temperature Range –40 to 70 °C
    Storage Temperature Range –40 to 85 °C