USB High / Full Speed Isolators with Built-in Heavy-Duty Power Transfer - no external power supply needed



	Home \| Products \| Downloads \| Order \| Support \| Applications \| Forum \| Testimonials \| Company \| Contact Us

USB Isolators with Built-in Heavy-Duty Power Transfer - no external power supply needed

USB2ISO USB Full Speed Isolator US$59.95 Free Express Shipping		VT USB-ISO-12 USB Full Speed Isolator US$64.95 Free Express Shipping		VT USB-ISO-480 USB High Speed Isolator US$129.95 Free Express Shipping
USB Speed	Full Speed (12 Mbps) Low Speed (1.5 Mbps)	USB Speed	Full Speed (12 Mbps) Low Speed (1.5 Mbps)	USB Speed	High Speed (480 Mbps) Full Speed (12 Mbps) Low Speed (1.5 Mbps)
Current Output (5V ± 0.5V)	> 400 mA^*	Current Output (5V ± 0.5V)	> 800 mA^* (if the USB port can supply)	Current Output (5V ± 0.5V)	> 800 mA^* (if the USB port can supply)
Data Isolation	1 kV	Data Isolation	2.5 kVDC @ 1 min	Data Isolation	2.5 kVDC @ 1 min
Power Isolation	1 kV	Power Isolation	2.5 kVDC @ 1 min	Power Isolation	2.5 kVDC @ 1 min
Connectors	USB-A-Plug for PC USB-A-Socket for USB cable to device	Connectors	USB-A-Plug for PC USB-A-Socket for USB cable to device	Connectors	USB-A-Plug for PC USB-A-Socket for USB cable to device
Temperature Range	-40 °C ~ 50 °C	Temperature Range	-40 °C ~ 50 °C	Temperature Range	-40 °C ~ 50 °C
Size	50 × 25 × 12 mm	Size	50 × 23 × 14 mm	Size	50 × 23 × 14 mm
		Undervoltage Protection	LED slow blinking	Undervoltage Protection	LED slow blinking
		Overvoltage Protection	LED fast blinking	Overvoltage Protection	LED fast blinking
		Overheating Protection	LED fast blinking	Overheating Protection	LED fast blinking
		Power Efficiency	η ≥ 80%	Power Efficiency	η ≥ 80%
Supported Audio Interfaces	up to 96 kHz 24-bit stereo inputs & outputs	Supported Audio Interfaces	up to 96 kHz 24-bit stereo inputs & outputs	Supported Audio Interfaces	All including 192 kHz, 384 kHz, 768 kHz, 1536 kHz, 24-bit or 32-bit, stereo or multi-channel inputs & outputs
Allow floating measurement using a DSO with single-ended inputs after isolation of earth ground?	Yes	Allow floating measurement using a DSO with single-ended inputs after isolation of earth ground?	Yes	Allow floating measurement using a DSO with single-ended inputs after isolation of earth ground?	It works perfectly in ground referenced measurements. In measurements without referencing to the ground, It may or may not work properly depending the potential of the point where the probe ground lead is connected to. Nevertheless, no short circuit and no damage will be incurred even if it is connected to a point with a high potential, unlike the case with no earth ground isolation.
Number of Isolators needed for VT hardware?	One isolator provides sufficient power to VT DSO: 2810R, 2810, 2810E, 2820R, 2820, 2820E, 2A10, 2A20, VT RTA: 168A, 168B, VT UltraMic-384, VT IEPE-2G05, VT CAMP-2G05, 333D01 Two isolators provide sufficient power to VT DSO: 2A10E, 2A20E. A USB cable with two heads on the PC side should be used in this case.	Number of Isolators needed for VT hardware?	One isolator provides sufficient power to VT DSO^**: 2810R, 2810, 2810E, 2820R, 2820, 2820E, 2A10, 2A20, 2A10E, 2A20E VT RTA: 168A, 168B, VT UltraMic-384, VT IEPE-2G05, VT CAMP-2G05, 333D01	Number of Isolators needed for VT hardware?	One isolator provides sufficient power to VT DSO^**: 2810R, 2810, 2810E, 2820R, 2820, 2820E, 2A10, 2A20, 2A10E, 2A20E, VT RTA: 168A, 168B, VT UltraMic-384, VT IEPE-2G05, VT CAMP-2G05, 333D01

* A standard USB 2.0 port (usually black in color) can output at least 500 mA while a standard USB 3 port (usually blue in color) can output at least 900 mA. In fact, most computers' USB ports nowadays can supply a current of more than 1A. However, many USB isolators in the market are unable to supply enough current to those power demanding USB devices such as USB oscilloscopes.

** The second-generation VT DSOs support both high speed (480Mbps) and full speed (12Mbps). High speed is preferrable as it is much faster than full speed, resulting in much faster screen refresh rates, and much higher sustainable sampling rates under the streaming mode.

Important note: Isolating the ground of an oscilloscope from the protective earth, through a battery-powered laptop or USB isolator, is a safety hazard, be sure that the oscilloscope probe ground lead never toughs anywhere with a dangerous potential above the earth ground.

1. The USB Galvanic Isolator is used for:
1) Protection of computer and attached USB devices - GREAT for LAB & Field use!
2) Protection of electronic test and measurement devices such as USB oscilloscopes and USB signal generators, as well as the circuits under test, when doing electronic measurements
3) Protection of programmers and circuit boards when programming embedded boards
4) Allow safe serial port galvanic separation for communication
5) Avoiding ground loops between devices - for instance PC->USB Isolator->USB SoundCard->Audio Power Amplifier to eliminate hum created by gound loops

2. Package Contents
1) USB Isolator

3. How does it work?
Just plug the USB isolator into a USB port of a hub or PC and then plug your USB device into the USB isolator. The PC and your USB device now have no electrical connection but can still talk to each other. The USB isolator module also transfers power from the PC to your USB device with no electrical connection. Your USB device is now protected and can be attached to other ground potentials without any ground loops that could destroy your computer, USB device and other attached electronic devices.

USB2ISO USB 2.0 Full Speed Isolator Diagram

USB2ISO USB 2.0 Full Speed Isolator Diagram

4. Examples
1. How to make floating or isolated measurements and break the ground loop with a USB oscilloscope?