GE MDS DS-EL805 MDS TransNet 900 User Manual users manual addendum

GE MDS LLC MDS TransNet 900 users manual addendum

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users manual addendum

MDS 05-2708A01, Rev. A Page 1 of 2MDS TransNET 900 TransceiverADDENDUMAddendum to MDS 05-2708A01, Rev. A April 19, 2002Microwave Data Systems Inc., 175 Science Parkway, Rochester, NY 14620 U.S.A.General Business +1 (585) 242-9600, FAX +1 (585) 242-9620This addendum contains corrections and additions to the MDS TransNET 900 Installation Guide (MDS P/N 05-2708A01, Rev. A) published in March 2002. The Bolded text below indicates new or revised material. You maywish to make these pen & ink changes directly to your manual or include a reference to this addendum in theappropriate sections.ITEM 1—Command ChangesPage 19, Data Buffer Setting: Default setting is OFF.Page 25, BUFF [ON, OFF]: Default setting is OFF.Page 26, CTSHOLD [0-6000]: Should read CTSHOLD [0-60000].Page 28, RSSI description: Change reference to minimum output range from “-50 dBm” to “-40 dBm.”Page 30, SKIP [NONE, 1…8] description: Delete text reference to “128 frequency.”Page 31, TX [xxxx] description: Default Transmit Frequencies are Master—902.200 MHz, Remote—927.800MHz.ITEM 2—Table 8. Alarm Codes, Page 34For Alarm Code 30, delete second sentence that reads “Bit errors are likely to be present in the data.”ITEM 3—Internal Fuse Replacement, Page 35Reverse polarity will not cause the fuse to blow.ITEM 4—Technical Specifications, Page 38Change Temperature Range from “-30C to +60C” to “-40 to +70C.”Change Current Draw (Receive) rating from “125 mA @ 13.8 Vdc” to “100 mA @ 13.8 Vdc.”Delete “TTL/” reference.Change Data Latency from “10 ms typical” to “7 ms typical.”ITEM 5—Table 10. Data connector pin descriptions—RS/EIA-232, Page 40Delete entire text description for Pin 9 and replace with “Not Used.”ITEM 6— Table 11. Data connector pin descriptions—RS/EIA-232, Page 41Change table title to “Data connector pin descriptions—RS/EIA-485.”In Pin 2 description, change heading from “RXD/Y” to “RXD/+.” Also, replace the words “Non-inverted driveroutput” with “non-inverted receive data.”In Pin 3 description, change heading from “TXD/A” to “TXD/+.” Also, replace the words “Non-inverted receiverinput” with “non-inverted transmit data”
Page 2 of 2 MDS 05-2708A01, Rev. AIn Pin 7 description, change heading from “RTS/B—Request-to-Send” to “TXD/-.” Also, replace the words“Inverted receiver input” with “Inverted transmit data.”In Pin 8 description, change heading from “CTS/Z—Clear-to-Send” to “RXD/-.” Also, delete all descriptive textand replace with “Inverted receive data.”ITEM 7— New PORT CommandThe transceiver’s DATA port configuration (RS-232 or RS-485) may be read by entering the PORT command. Theport may be configured for RS-232 or RS-485 operation using the following commands:PORT RS232—RS-232 operationPORT RS485—RS-485 operationITEM 8— Wiring for RS-485 systemsWhen wiring the transceiver’s DATA connector for RS-485 2-wire or 4-wire operation, use one of the followingarrangements :TXD/+RXD/+237DATA CONNECTOR8RXD/-TXD/-4-WIRE CONNECTIONSRX/TX+237DATA CONNECTOR82-WIRE CONNECTIONSRX/TX-ITEM 9— Antenna & Feedline Selection, Page 9Currently, the transceiver is only authorized for use in the USA with an MDS Clearwave antenna, Part Number97-3662A13 and a 3-meter feedline. Check with MDS for the status on additional approvals that are pending.End of Document

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