USB-Isolator USER`S MANUAL
Contents
1. Acromag USB Isolator USER S MANUAL Copyright 2010 Acromag Inc Printed in the USA Data and specifications are subject to change without notice 8500 900 B10M012 IT and Instrumentation for industry A mi Sales 44 0 1273570220 Website wwwamplicon com Email sales amplicon com 2 USB Isolator User s Manual OVERVIEW Fully Isolated power and VO circuits for safety and increased noise immunity Key Features CE and FCC Compliant Designed to meet and exceed EN61000 specifications High retention USB connectors provide minimum withdrawal force ot 15 Newtons USB bus powered and no need for external power USB Cable Included 1 meter USB cable Type A to Type B USB 2 0 compatible Changeable Data Rate allows selectable full speed 12Mbps Defaut or low speed 1 5Mbps Wide Ambient Operation from 40 to 70 C 40 to 158 Hardened For Harsh Environments and includes protection from RFI EMI ESD EFT amp surges Has low radiated emissions per CE requirements Power LED provides power indication and overload indication Reset Push Button is a useful feature for reinitializing peripherals without unplugging cables Built in Current Limiting with Auto Retry prevents damage to isolator and connected USB devices Small compact and rugged housing design Easy to install with existing equipment No special drivers required IT and Instrumentation for industry2. Amplicon Sales 44 0 1273570220 Website wwwamplicon com Email sales amplicon com USB Isolator User s Manual 3 This circuit isolates USB power and data via two transformers Input power HOW IT WORKS is current limited to 200mA to help prevent damage to connected devices Corresponding to 137mA out load Bath signal ines are equipped with common mode fiters and include transient protection USB is set to full speed 12 Mbps but can be jumped to low speed 1 5 Mbps for legacy writs Gane amen we ee Saas APIE ao d REL 3 S a r ue Frome Se e wT ws own EB gt OT nore purennis 90 a seige an 10 tn eo ee on aR PH EA USB ISOLATOR SIMPLIFIED SCHEMATIC DIMENSIONS 24 Acromag A MODEL USB ISOLATOR 1 85 Enclosure Depth 0 93 IT and Instrumentation for indusi A my Sales 44 0 1273570220 Website wwwamplicon com Email sales amplicon com 4 USB Isolator User s Manual Installation 1 Connect B type plug square connector to PC connect side of the USB Isolator Guide to Quickly Establishing Communication Note This device is not intended to isolate hubs Note This isolator will break the path to earth ground Most personal computers connect the USB signal ground in 2 Connect A type plug of USB cable to an
3. Changing USB Speed from the enclosure and this requires handling at an ESD safe work station Note Default speed is set to Waring We do not recommend that you do this in the full speed 12Mbps field as it invites potential damage to sensitive internal circuitry 1 Open enclosure by unscrewing Philips head screw on bottom of the case a label sticker will have to be pulled up to access this screw ih 2 To Switch to Low Speed 1 5Mbps Remove jumpers J1 and J2 and replace as shown below right most position Note If both jumpers are not set the same way the unit will not function Properly IT and Instrumentation for industry Amplicon Sales 44 0 1273570220 Website wwwamplicon com Email sales amplicon com 6 USB Isolator User s Manual j This is an optional procedure to change the data rate of the USB fatalon ISOLATOR to high speed Changing USB Speed 1 To Switch to High Speed 12Mbps Remove jumpers J1 and J2 and replace as shown below left most position Note If both jumpers are not set the same the unit wil not function properly nn 2 Carefully place board back into enclosure and mate both sides of enclosure Install the screw in the bottom of enclosure The isolator is now ready for operation Troubleshooting POSSIBLE CAS pp OLE No power on the USE port or USB_ Try plugging the unit into another portis bad USB port USE A cables bad Replace cabis Cannot communicate wi
4. available USB port on the common with the cable shield computer the power LED will turn on when connected to a powered and earth ground The PC computer connector side of this isolator also holds signal ground in common with the connector shield The target device connector side of this isolator P does not anster the earth 3 Sround connection across the 1 4 P sie Ite device thal you g 1 fon gemma Foi cn cubase N must be implemented to Introduce art ground tothe ai 3 Connect the A type plug flat connector to the device connect side ot the isolator Connect the other side of the cable to the peripheral being isolated NOTE This device is not intended to isolate the trunk of a USB hub as its output current is limited to 137mA 4 Your computer should prompt that a new device has been connected to the computer The power LED of the isolator should be ON and not blinking At this point you are ready to begin talking to your connected device TIP If your PC fails to detect your USB device try pushing the reset connection button on the Isolator IT and Instrumentation for industry Amplicon Sales 44 0 1273570220 Website wwwamplicon com Email sales amplicon com USB lsolator User s Manual 5 This Is an optional procedure to change the data rate of the full speed Installation USB ISOLATOR to low speed In order to change the speed it requires that the board be carefully removed
5. gth is 5 meters on each side Connectors High retention USB Type A x 1 and USB Type B x 1 USB Interface connectors with minimum withdrawal force of 15 Newton s Data Rate Selectable full speed 12Mbps Defaull or low speed 1 5Mbps Transient Protection Transient Voltage Suppressors are applied at both the PC and target device ports The metal cable shield is connected to signal GND though a ferrite Power LED Constant ON if power is on and unitis OK Blinking ONOFF Controls and Indicators indicates unit is in current limit mode gt 137mA and the connected device is drawing too much power Safety Approvals All Pending CE marked EMC Directive Agency Approvals 2004 108 EC UL Listed UL508 ANSI ISA 12 12 01 2007 cUL Listed Canada Standard C22 2 Nes 142 M1987 and 213 M1987 Electromagnetic Compatibility EMC Immunity Per European Norm EN61000 6 2 2006 Electrostatic Discharge ESD Immunity 4KV direct contact and 8KV air discharge to the enclosure port per IEC61000 4 2 Radiated Field Immunity RFI 10V M 80 to 1000MHz AM 1 4 to 2GHz SVIM and 2 to 2 7GHz 1VIM per IEC61000 4 3 Electrical Fast Transient Immunity EFT 2KV to power and 1KV to signal VO per IECS1000 4 4 Conducted RF Immunity CRFI 10Vrms 150KHz to 80MHz per 1E061000 4 6 Surge Immunity 0 5KV per IEC61000 4 8 Emissions Per European Norm EN61000 6 4 2007 Radiated Frequency Emissions 30 to 1000MHz per CISPR16 Class A WARNING This is a Clas
6. s A product In a domestic environment this product may cause radio interference in which the user may be required to take adequate measures Power Supply Standard 5VDC power provided from the USB host Environmental computer up to 120mA of current Current Limit Isolator is equipped with a 200mA input limiter to isolator and this corresponds to 137mA out Once limit is reached power will open and retry momentarily repeatedly until the currant draw is less than 200mA Isolation USB power and data circuits are isolated from each other for common mode voltages up to 250VAC or 384V DC off DC power ground on a continuous basis will withstand 1500VAC dielectric Strength test for one minute without breakdown Complies with test requirements of ANSUISA 82 01 1988 for voltage rating specified Operating Temp 40 C to 70 C 40 F to 149 F Relative Humidity 5 to 95 non condensing IT and Instrumentation for industry Amplicon Sales 44 0 1273570220 Website wwwamplicon com Email sales amplicon com
7. th device connected through the Isolator Your computer does not support the peripheral Your device does not support Try changing intemal Jumpers to Tow 12Mbps speed see page 5 You do nat have the speed set Verify intemal jumpers are BOTH set identically for each side to the same speed The LED is ON and the peripherals powered but the computer will Hot prompt me to indicate the device is connected Loose connection Check bath cable connections make sure they are properly and securely fitted into the USB connection ports at both ends The PC could not recognize the Press the reset connection button on device the USB isolator If this does not work try replugging the cable Tplug in my device but the power LED is blinking and the computer will not prompt me that a device is connected Peripheral ls drawing too much The USB isolator will not provide current for the isolator more than 120mA to peripheral Unplug peripheral and plug it directly into PC this is not isolated IT and Instrumentation for industry Amplicon Sales 44 0 1273570220 Website wwwamplicon com Email sales amplicon com USB Isolator User s Manual 7 Case Material Plastic non conductive UL 94 HB flammability rating SPECIFICATIONS Dimensions 2 40 Length x 1 85 Wide x 0 925 High 60 96mmx46 99mmx23 4a5mm Enclosure and Physical Cable Length Maximum cable len
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