Digi EIA-422 User's Manual
Contents
1. ports to 10BASE T and 100BASE T Ethernet connections Most EtherLite serv ers support speeds up to 115 Kbps or 230 Kpbs on all ports simulta neously 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 Cate gory 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 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 OOAOE7 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 amp 2 3 amp 6 4 amp 5 and 7 amp 8 RJ 45 Pinouts Sitraight through Crossover Pin to Pin Pin to Pin Pin 1 Pin x 1 to 1 1 to 3 Lee2. 00 240 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 ser vicing 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 90033900D EtherLite Hardware Information Guide Digi Overview Digi EtherLite serial port servers connect asynchronous serial
3. EIA 422 Mode EtherLite 2 or 162 only To operate a port of the EtherLite 162 EIA 422 in EIA 422 mode set the port s EI A 422 ENABLED switch to the up position Set the TERMINA TION 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 pare 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 EIA 485 mode and have no termination installed EIA 485 Pinouts Signal ae 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 1
4. d when the supply con nection is other than a direct connection to the branch circuit EIA 232 Connectors Many EIA 232 serial devices implement their serial ports with DB 25 connectors The EtherLite units have serial ports implemented with 8 pin RJ 45 modular jacks with each signal using EIA 232 voltage levels The figures below shows the pinouts of all these connector types 1 13 OOOOOOOO00000 OOO0O00000000 14 25 Pin 1 Pin x Male DB 25 ae OOOOOOO000000 OOOO00000000 RJ 45 Plug 25 Female DB 25 EIA 232 DTE Pinouts Ae De Signal DB 25 Pin DB 9 Pin 1 RTS out 4 7 2 DSR in 6 6 3 DCD in 8 1 4 RxD in 3 2 5 TxD out 2 3 6 GND 7 5 7 DTR out 20 4 8 CTS in 5 8 IMPORTANT RJ 45 cables designed for other Digi products must not be used with Digi EtherLite and SCSI Terminal Server products The EtherLite RJ 45 pin configuration differs from the configuration of the RJ 45 connectors used on other Digi products The table above shows the different signals along with the standard DB 25 DB 9 and the EtherLite 8 pin RJ 45 pinout The most convenient method of mating DB 25 and DB 9 serial devices to your EtherLite Port Server is to use RJ 45 to DB 25 and RJ 45 to DB 9 adapters This allows the DTE DCE selection to occur at the adapter while using straight through modular cables To assure CE Conformit Europ enne mark compliance E
5. s 2 2 to 2 2 to 6 3 to 3 3 to 1 E 4 to 4 4 to 4 rd 5 to 5 5 to 5 6 to 6 6 to 2 7 to 7 7 to 7 RJ 45 Plug 8 to 8 8 to 8 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 brack ets 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 e Cumulative power requirements of the unit and other equipment installed in the rack Do not overload rack supply circuits e Safety and stability Always stack the rack from bottom up to ensure a stable and safe rack Note The EtherLite 32 weighs 5 8 Ibs 2 6 kgs e Air flow in the rack Make sure the unit s ambient temperature does not exceed 95 F 35 C e Grounding Earth ground the unit reliably to the rack system The earth ground connection must be maintaine
6. urope all serial cables must be shielded The following RJ 45 to DB 25 adapters are available from Digi International along with two meter unshielded straight through modular cables RJ 45 to DB 25 Adapters P N 76000450 P N 76000451 DTE to Modems DCE to Terminals Printers Jack Sianal Mate Jack 9 Male 1 RTS 4 1 RTS 5 2 DSR 6 2 n c 6 3 DCD 8 3 DCD 20 4 RxD 3 4 RxD 2 5 TxD 2 5 TxD 3 6 GND 7 6 GND 7 7 DTR 20 7 DTR 8 8 CTS 5 8 CTS 4
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