Description
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The USB-485 is a PC-based serial interface device manufactured by National Instruments designed to provide a 1-port USB to RS485 connection. It features a corrected part number of 778475-01, initially listed as 187918D-01, indicating a revision or update to the product specifications. This device falls under the category of PC-based Serial interfaces, emphasizing its utility in computer-based applications.
With its RS-422 and RS-485 interface types, the USB-485 ensures compatibility with a wide range of serial communication standards, making it a versatile choice for various applications. It supports a maximum of 31 devices simultaneously, providing significant flexibility in connecting multiple peripherals. The maximum transfer rate of 460.8 kb/s ensures efficient data transmission, suitable for many industrial and commercial applications.
One of the key features of the USB-485 is its software selectable biasing, allowing users to customize the device according to their specific needs. The device includes a DB-9 male I/O and a USB series A plug, offering standard, widely compatible connectors for easy integration into existing systems.
This device is designed for use with older operating systems, specifically Windows 2000 and Windows XP, which could be a limiting factor for users with more modern computing environments. It operates efficiently with a power requirement of 175 mA (Typical) and up to 500 mA (Max) at +5 VDC, ensuring low power consumption.
Regarding its physical characteristics, the USB-485 is relatively lightweight at 0.26 lb and compact with dimensions of 1.5 x 1.4 x 0.6 inches. It is designed to operate within a temperature range of 0 to 70 degrees Celsius, suitable for most ambient conditions.
In summary, the USB-485 by National Instruments is a highly functional, PC-based serial interface device that offers a robust solution for connecting RS485 peripherals to a USB port. Its compatibility with older Windows operating
| Specification | Details |
|---|---|
| Part Number | 187918D-01 (Corrected: 778475-01) |
| Category | PC-based Serial |
| Model | USB-485 |
| Description | 1-port USB to RS485 Serial Interface, 2m |
| Manufacturer | National Instruments |
| Interface Type | RS-422, RS-485 |
| Compatibility | Windows 2000, Windows XP |
| Maximum Number of Devices Supported | 31 |
| Maximum Transfer Rate | 460.8 kb/s |
| Software Selectable Biasing | Yes |
| Connector Type | DB-9 male I/O, USB series A plug |
| Power Requirement | 175 mA (Typical), 500 mA (Max) at +5 VDC |
| Weight | 0.26 lb |
| Dimensions | 1.5 x 1.4 x 0.6 in |
| Operating Temperature Range | 0 to 70 degrees Celsius |
| Question 1: What is the corrected part number for USB-485? Answer 1: 778475-01 Question 2: How many devices can USB-485 support simultaneously? Question 3: What is the max transfer rate of the USB-485? Question 4: Is software selectable biasing a feature of USB-485? Question 5: What are the supported Windows OS for USB-485? |
