ISO-UXX

isolating & protecting USB connections

The CESYS ISO-Uxx Series gives you back peace of mind in harsh environments by protecting your PC and your USB devices. The ISO-Uxx devices are tested according to EN 62368-1. They isolate both sides of a USB connection and protect against surges up to 5.000 V_DC and 3.000 V_AC (50 Hz).

application areas

inhibit ground loops in recording studios and on stage.
prevent interference voltages at sensor measurements.
protect your equipment against surges.
prevention against malfunction resulting from the entrainment of interference.

features

ISO-U11:
Full Speed 12 Mbit/s,
2kV_DC / 500 V_AC
ISO-U20:
Hi-Speed 480 Mbit/s
2kV_DC / 500 V_AC
ISO-U30:
SuperSpeed 5 Git/s
5kV_DC / 3 kV_AC

typical problem cases

As long as you run the laptop on battery, your test setup works as expected. But as soon as you use the power supply, disturbances and measurement errors occur. Does this sound familiar?

Have you ever wondered why it makes a difference, which direction you put the plug in the socket, or which socket you use?

Also a widespread case: Once your machine or equipment has been installed at your customers site, sudden unexplained errors occur that aggravate or improve with the type of wiring.

Mostly it's the ground loops that cause this trouble!

ISO-Uxx devices isolate the electrical connection between your PC and your USB device. A common cause of ground loops is thus effectively eliminated.

ISO-Uxx specifications

Specification	ISO-U11	ISO-U20	ISO-U30
Isolation voltage (1 min)	2000 V_DC / 500 V_AC	2000 V_DC / 500 V_AC	5000 V_DC / 3000 V_AC
USB 1.1 Full Speed (12 Mbit/s)	X	X	X
USB 2.0 Hi-Speed (480 Mbit/s)	-	X	X
USB 3.0 Super Speed (5Gbit/s)	-	-	X
Power	390 mA, Full Speed	340 mA, Hi-Speed	710 mA, Hi-Speed 660 mA, SuperSpeed
Dimension	57 x 45 x 28 mm	57 x 45 x 28 mm	67 x 45 x 28 mm