Instruction/ maintenance manual of the product 285 Patton electronic
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USER MANU AL MODEL 285 and 285S RS-232 to RS-485 Interface Converters SALES OFFICE (301) 975-1000 TECHNICAL SUPPORT (301) 975-1007 http://www .patton.com Part# 07M285-B Doc# 047012UB Revised 9/29/93 R.
1.0 WARRANTY INFORMA TION Patton Electronics warrants all Model 285 components to be free from defects, and will—at our option—repair or replace the product should it fail within one year from the first date of shipment.
3.0 CONFIGURA TION The Model 285 is configured using six PC board mounted switch- es. Figure 1 (below) shows the switch locations, along with the loca- tion of the terminal blocks and optional surge protectors: 3.1 SETTING THE DTE/DCE SWITCH For your convenience, the Model 285 has an externally accessi- ble DTE/DCE switch (see Figure 2, below).
3.2.1 CONFIGURA TION SWITCH FUNCTIONS The table and descriptions below detail the functions of the five configuration switches. Read this information carefully before setting the switches. SW1-1: RTS/CTS Delay: Switch 1-1 determines how long cir- cuit CB (CTS) takes to become active after RTS is asserted (DCE Mode only).
4.1.2 4-WIRE CONNECTION USING RJ-1 1 OR RJ-45 The RJ-1 1 and RJ-45 connectors on the Model 285's RS-485 side are pre-wired for a standard TELCO wiring environment. The signal/pin relationships are shown below: RJ-1 1 SIGNAL RJ-45 SIGNAL 1 .......
4.1.3 4-WIRE CONNECTION USING TERMINAL BLOCKS If your RS-485 application requires you to connect two pairs of bare wires to the Model 285, you will need to open the case to access the terminal blocks.
9. Insert the strain relief assembly with the wire going through it into the slot in the bottom half of the modem case and set it into the recess in the case. 10. BEND the top half of the case as necessary to place it over the strain relief assembly .
APPENDIX A SPECIFICA TIONS T ransmission Format: Asynchronous Data Rate: Up to 1 15,200 bps T ransmit Line: 2, 4 wire unconditioned twisted pair T ransmit Mode: Full or half duplex T ransmit Level: 0 .
A PPENDIX C BLOCK DIAGRAM 15.
An important point after buying a device Patton electronic 285 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
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If you already are a holder of Patton electronic 285, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Patton electronic 285.
However, one of the most important roles played by the user manual is to help in solving problems with Patton electronic 285. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Patton electronic 285 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
