Overview

DX Engineering USB Isolator

DX Engineering USB Isolator, DXE-ISO-USB is an inline Solid State device that provides surge protection between two USB 2.0 devices, typically a transceiver and a computer. The DXE-ISO-USB is a passive device that requires no power, and it has two ports, one USB A and one USB B. It is bi-directional, so it can be installed in either direction.

The supplied USB A to USB B standard patch cable, 19.7 in. (500mm), can be reversed and used for either type of equipment connection with the opposite connector to the mating port on the ISO-USB.

A user supplied cable must have the opposite mating connector for the ISO-USB and its other end must have the USB connector type that provides connection to the second piece of equipment or computer. Often, an identical USB A to USB B will be on hand or is readily available.

USB interface cables between several types of equipment can serve as a conduit to lightning pulses or other unexpected voltage pulses. For example, a damaging surge can occur whenever one device is connected to an antenna feedline that also has a USB cable to the other device, which is connected to a commercial AC power main, or through a DC power supply. The DXE-ISO-USB protects a transceiver from a voltage surge coming from the computer, and vice versa, it protects a computer from a surge from a transceiver.

The maximum USB 2.0 speed of the DXE-ISO-USB is 480 Mbps (Mb/s). This supports RS-232 COM port data speeds greater than the fastest 115,200 bps baud rate selection found in most USB capable equipment.

PLEASE NOTE: The DXE-ISO-USB does NOT support USB C Gb/s data speeds, and it does NOT pass sufficient DC current for charging or powering a device. Maximum current is 100mA (0.1A). It cannot be used for data storage devices and is not to be used for charging.

In an unusual application, two different user supplied cables, USB A to USB C and USB B to USB C, could be used to provide DXE-ISO-USB protection between two USB C devices, as long as neither device is supplying or drawing power.

Documentation

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