Meilhaus Electronic USB-GT, Руководство пользователя, Страница: 5 / 19

1.1 Package Contents
1. 1 x ME-Power-DVD (User Certification document).
2. 1 x USB-GT Interface, depends on the version.
3. 1 x USB – Host Cable (A/B).
4. Model: USB-GT H und USB-GT N additional supplied compo-
nents: 1 x External 5 V/DC power.
1.2 Model Overview
Model Admission Power supply
USB-GT (D)
for standard applications USB-powered
USB-GT N
for standard applications external power supply
USB-GT H
for standard applications,
integrated 4 x USB hub
external power supply
USB-GT MED-D EN60601-1 + EN60601-1-2 USB-powered
USB-GT MED-N EN60601-1 + EN60601-1-2 external power supply
1.3 Function
The interface USB-GT isolates the electrical connection between a
host (for ex. PC) and a device (for ex. USB-stick) using high-speed
optocouplers. This galvanic isolation is protected against electrical
conductivity up to a minimum of 4 KV potential difference between
input and output. The USB signals are not influenced by the isola-
tion and correspond to the USB standards 1.1 and 2.0.
! Important ! Any device with a current load greater than 100 mA
should not be connected if it doesn’t have its own
power supply.