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Фрагмент инструкции
Set the TERMINATION (422 ONLY) switch to the down position. This switch connects a 120 ohm, 1/2 watt resistor across the input signals. EtherLite 2 EIA-422 ports are hard-wired to EIA-422 mode, and have no termination installed. Pinouts are shown in the table below. Note: 2-wire multidrop configuration for EIA-422 is not supported. EIA-422 Pinouts Signal RJ-45 Pin Direction RTS* 1 RxD(-) 2 input(-) DCD* 3 RxD(+) 4 input(+) TxD(+) 5 output(+) SG 6 TxD(-) 7 output(-) CTS* 8 *EIA-232 signals on EtherLite EIA-422 only EIA-485 Mode (EtherLite 2 EIA-485 only) EtherLite 2 EIA-485 ports are wired for half duplex multiple drop EIA485 mode and have no termination installed. EIA-485 Pinouts Signal RJ-45 Pin Direction No connect* 1 No connect* 2 No connect* 3 TX(A)/RX(A) 4 Bidirectional TX(B)/RX(B) 5 Bidirectional GND 6 No connect* 7 No connect* 8 *Do not connect any signal. Environmental Specifications Operating Temperature 32°F (0°C) to 122°F (50°C) for units with less than 32 ports 32°F (0°C) to 95°F (35°C) for 32-port units Storage Temperature -13°F (-25°C) to 167°F (75°C) Operating or Storage Humidity 0 to 90% non-condensing AC Power Requirements (maximum) 100-240 VAC, 50-60 Hz 15W (15VA) for units with less than 32 ports 25W (25VA) for 32-port units Power Cord The recommended power cord for North American units is: UL Listed, CN, detachable type SJT or SVT, 3 conductor, 18 AWG, rated 125 V, 10 A. CAUTION: To prevent electric shock, do not remove the cover of an EtherLite module. There are no user-serviceable parts inside. Refer servicing to qualified personnel. Copyright The Digi logo and EtherLite are registered trademarks of Digi International. All other brand and product names are trademarks of their respective holders. © Digi International Inc., 2000 All Rights Reserved Information in this document is subject to change without notice and does not represent a commitment on the part of Digi International. Digi provides this document “as is”, without warranty of any kind, either expressed or implied, includ ing, but not limited to, the implied warranties of fitness or merchantability for a particular purpose. Digi may make improvements and/or changes in this manual or in the product(s) and/or the program(s) described in this manual at any time. This product could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein; these changes may be incorporated in new editions of the publication. EtherLite Hardware Information Guide Overview Digi EtherLite serial port servers connect asynchronous serial ports to 10BASE-T and 100BASE-T Ethernet connections. Most EtherLite servers support speeds up to 115 Kbps or 230 Kpbs on all ports simultaneously. Ethernet Cabling Requirements The EtherLite unit requires an unshielded twisted-pair (UTP) 10Base-T Ethernet or 100Base-TX connection. In order to maintain radio frequency emissions compliance, use EIA/TIA 568-compliant Category 4 or Category 5 for 10Base-T and Category 5 only for 100Base-TX. Installing the EtherLite Software Install the hardware before you install the device driver software. Follow the software installation instructions on the Access Resource CD. 90033900D Installing the EtherLite Hardware 1. Write the MAC address of the EtherLite module on the following line. It will be needed during software installation. This address is printed on a label next to the power plug at the back of the unit. MAC Address # 00AOE7______________ 2. Connect the Ethernet cable to the unit using the RJ-45 jack labeled 10BASE-T or 10/100BASE-T located on the front of the cabinet. Use the provided straight-through cable to connect the unit to a hub. Connecting directly to an Ethernet card will require a 10Base-T crossover cable (not provided). Note that either wiring scheme requires that the twisted pairs be used for specific pairs of pins: 1&2, 3&6, 4&5, and 7&8. RJ-45 Pinouts Pin 1 Pin x Straight-through Crossover Pin to Pin Pin to Pin 1 to 1 1 to 3 2 to 2 2 to 6 3 to 3 3 to 1 4 to 4 4 to 4 5 to 5 5 to 5 6 to 6 6 to 2 7 to 7 7 to 7 8 to 8 8 to 8 RJ-45 Plug 3. Assign an IP address to the EtherLite module. You will need to go to the software installation procedures on the Access Resource CD for information on how to assign an IP address. Rack Mount Installation For the EtherLite 32, a rack mount kit is included. The rack mount brackets may be installed at either the front or rear of the unit. To install each bracket, do the following: 1. Remove the two screws on the side of the cabinet. CAUTION: To prevent electric shock, do not remove the module cover. There are no user-serviceable parts inside. Refer servicing to qualified personnel only. 2. Align the countersunk holes of the bracket with the vacated holes in the cabinet. Use the countersink screws to fasten the bracket to the cabinet. Rack Mount Considerations When doing a rack mount installation consider the following: • Cumulative power requirements of the unit and other equip...