valutazioni - 4, GPA: 4.3
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Due to the limited available power for bus-powered hubs, cascading two bus-powered hubs is an illegal topology, and devices connected to the second hub will not function. USB specifications limit the connection of a bus-powered hub to a self-powered hub or host only. According to the USB Specification, the maximum limit of hubs cascaded in series cannot exceed five. In other words, you may have a maximum of five hubs between any device and the host. This does not mean that the maximum number of hubs in a system is five. Indeed, up to seven hubs can be connected parallel at any given level. You must tally both external and embedded hubs when counting downstream hubs. The E5805A is a bus-powered device and, therefore, must not be connected to a bus-powered hub. E5805A USB/RS232 Interface E5805A USB/RS232 Interface Support All support can be reached by contacting a call center. For your nearest call center, go to E5805A USB/RS232 Interface A E5805A Specifications E5805A Specifications This appendix lists E5805A Agilent USB/RS232 Interface Technical Specifications and Supplementary Information. Appendix A E5805A Specifications Technical Specifications Technical Specifications General Requirements Minimum System Requirements Windows 98 Second Edition /Me/2000/XP Professional (Windows Vista is not supported). A USB port (OS may require more resources) Supported Standards USB 1.0, 1.1 compatible; backwards compatible for USB 2.0 General Characteristics Power External power supply not required (USB powered) Maximum Power - 2.5W Certification USB-IF™ certified Configuration Plug-and-Play Hot-swappable Device Status LEDs for system and device status Baud Rate 230 Kbps per serial port simultaneously Acquisition Automatic port acquisition Reboots COM port assignments maintained across reboots Flow Control Full hardware and software flow control LEDs Tri-state LED displays device status and COM port activity Memory and IRQs No additional IRQ or memory address requirements Dimensions Length, Width, and Height 11.05 cm (L) x 18.29 cm (W) x 2.61 cm (H) Weight 311 grams Environmental Specifications Operating Environment 32o F to 131o F (0oC to 55oC) Humidity 0% to 95% (Non-condensing) Appendix A E5805A Specifications Technical Specifications Appendix A DECLARATION OF CONFORMITY According to ISO/IEC Guide 22 and CEN/CENELEC EN 45014 Manufacturer’s Name: Agilent Technologies, Incorporated Manufacturer’s Address: 815 – 14th St. SW Loveland, Colorado 80537 USA Declares, that the product Product Name: USB/4-port RS232 Interface Model Number: E5805A Product Options: This declaration covers all options of the above product(s). Conforms with the following European Directives: The product herewith complies with the requirements of the Low Voltage Directive 73/23/EEC and the EMC Directive 89/336/EEC (including 93/68/EEC) and carries the CE Marking accordingly. This product is intended for use with ISM equipment. Conforms with the following product standards: EMC Standard Limit CISPR 22:1997 / EN 55022:1998 Class B CISPR 24:1997 / EN 55024:1998 IEC 61000-4-2:1995+A1:1998 / EN 61000-4-2:1995 4 kV CD, 8 kV AD IEC 61000-4-3:1995 / EN 61000-4-3:1995 3 V/m, 80-1000 MHz IEC 61000-4-4:1995 / EN 61000-4-4:1995 0.5 kV signal lines, 1 kV power lines IEC 61000-4-5:1995 / EN 61000-4-5:1995 2 kV CM, 1 kV DM IEC 61000-4-6:1996 / EN 61000-4-6:1996 3 V, 0.15-80 MHz, Mod 1 kHz, 80% IEC 61000-4-8:1993 / EN 61000-4-8:1993 1 A/m, 50 Hz IEC 61000-4-11:1994 / EN 61000-4-11:1994 Dips: 95% 10 ms; 30% 500 ms; Interrupt > 95% 5 s Canada: ICES/NMB-003:1998[2] Australia/New Zealand: AS/NZS 3548 Safety IEC 60950:1991 +A1, A2, A3, A4 / EN 60950:1992 + A1, A2, A3, A4 USA: UL 1950, 3rd edition Canada: CSA C22.2 No. 950 Supplemental Information: [1] This product was tested in a typical configuration with Agilent Technologies test systems. [2] This Class B digital apparatus complies with Canadian ICES-003. [3] Cet appareil numerique de la classe B est conforme a la norme NMB-003 du Canada. 27 September 2004 Date Ray Corson Product Regulations Program Manager For further information, please contact your local Agilent Technologies sales office, agent or distributor. E5805A USB/RS232....... 1 1 Agilent USB/RS232 ....... ......... E5805A USB/RS232 ....... 24 E5805A USB/RS232 .................. 25 ............... 28 E5805A USB/RS232 ..................... 29 E5805A . USB...... 36 .... 38 E5805A USB/RS232 ....... E5805A USB/RS232 ....... E5805A USB/RS232....... E5805A USB/RS232................. (.... ) ............. Windows 98SE/Me/2000/XP..... .. PC....... USB (............ ) ..... ................ E5805A USB/RS232 .............. A ... B ... USB........ (A ... ) ..PC..... USB...... ...... USB.......... USB........ (B.. . ) . E5805A USB/RS232 ................. ............................E5805A USB/ RS232 ............................. E5805A USB/RS232....... E5805A USB/RS232....... E5805A USB/RS232.................. E5805A....... CD ..........