user manual model 2085
Contents
1. oo0o00 Terminal Block Figure 2 below shows the location of the eight position DIP switch on the underside of the Model 2085 PC board Figure 3 following page shows the orientation of the eight position DIP switch with respect to ON OFF positions DIP Switch S1 Figure 2 Bottom view of Model 2085 board showing internal DIP switch Amplicen BENELUX Datasheet ON 3 3 DIP SWITCH SETTINGS 7 m al m E E A All possible settings for the Model 2085 s configuration switches y are presented in Figure 5 below Following Figure 5 is a detailed 1 2 3 4 5 6 7 8 description of each switch function If you have additional questions O Zz OFF contact Technical Support at 301 975 1000 Figure 3 Close up of DIP switch showing ON and OFF positions S1 SUMMARY TABLE Position Function Factory Default 3 1 SETTING THE DCE DTE SWITCH y S1 1 Transmit Off Impedance Off For your convenience the Model 2085 has an externally S12 Transmit Off Impedance Off High Z accessible DCE DTE switch If the device connected to the Model p 2085 is a modem or multiplexer or is wired like one set the switch to S1 3 RTS CTS Delay On 8 msec DTE This setting causes the Model 2085 to behave like Data S1 4 ECHO Mode Off Echo Off Terminal Equipment and transmit data on pin 2 If the devi2. We would like to hear from you Please contact us in any of the following ways to tell us how you like this product and how we can meet your product needs today and in the future Web http www patton com DIRECTION DTE SETTING DIRECTION From Model 2085 Data Term Ready DTR 20 1 2 3 4 5 CTS Clear to Send 6 T 8 FG Frame Ground TD Transmit Data RD Receive Data RTS Request to Send DSR Data Set Ready SG Signal Ground DCD Data Carrier Detect From Model 2085 To Model 2085 From Model 2085 To Model 2085 To Model 2085 To Model 2085 Sales E mail Support E mail Phone Sales Phone Support Fax sales patton com support patton com 301 975 1000 301 975 1007 301 869 9293 We are committed to a quality product at a quality price Patton Electronics is BABT and ISO standards in the industry CE 9001 certified We meet and exceed the highest UL etc It is our business to serve you If you are not satisfied with any aspect of this product or the service provided from Patton Electronics or its distributors please let us know Thank you Burton A Patton Vice President
3. container This number may be obtained from Patton Electronics Technical Service 301 975 1007 http www patton com support patton com Packages received without an RMA number will not be accepted Patton Electronics technical staff is also available to answer any questions that might arise concerning the installation or use of your Model 2085 Technical Service hours 8AM to 5PM EST Monday through Friday Amplicen BENELUX Datasheet 2 0 GENERAL INFORMATION Thank you for your purchase of this Patton Electronics product This product has been thoroughly inspected and tested and is warranted for One Year parts and labor If any questions or problems arise during installation or use of this product please do not hesitate to contact Patton Electronics Technical Support at 301 975 1007 2 1 FEATURES Operates asynchronously point to point or multipoint over 2 or 4 wires Up to 50 multipoint device drops in a polling environment e Data rates to 115 2 Kbps e Passes transmit amp receive data one control signal each direction e No AC power or batteries are required e Variable high low impedance settings e Able to operate with or without echo Carrier can be set as constantly on or controlled by RTS Compact size 2 66 x 2 10 x 0 73 e Twisted pair connection via strain relief RJ 11 or RJ 45 Silicon Avalanche Diode surge protection 2 2 DESCRIPTION The Model 2085 High Speed RS 232 to
4. vary based upon the number of drops data rate wire gauge etc Call Technical Support for specific distance estimates Figure 7 below shows how to wire the two pair cables properly for a Model 2085 star topology Note that the ground connection is not needed HOST FIRST SLAVE SECOND SLAVE XMT p RCV L RCV XMT p RCV peas ateen RCV RCV p XMT L_ XMT RCV XMT XMT Figure 7 Star wiring for Model 2085 host and slaves Datasheet 4 2 2 DAISY CHAIN TOPOLOGY Using a daisy chain topology you may connect several Model 2085s together in a master slave arrangement Maximum distance between the units will vary based upon the number of drops data rate wire gauge etc Call Technical Support for specific distance estimates Figure 8 below shows how to wire the two pair cables properly for a Model 2085 daisy chain topology Note that the ground connection is not needed HOST FIRST SLAVE OTHER SLAVE S XMT ROV RCV XMT RCV RCV RCV XMT XMT RCV asec XMT XMT Figure 8 Daisy chain wiring for Model 2085 host and slaves 4 3 CONNECTION TO THE RS 232 INTERFACE Once you have properly configured the Model 2085 and connected the twisted
5. Datasheet USER MANUAL MODEL 2085 High Speed RS 232 to RS 485 Interface Converter IT and Instrumentation for Industry Am pl can BENELUX Tel 31 105298827 Fax 31 105298828 Email verkoop ampliconbenelux com Datasheet 1 0 WARRANTY INFORMATION Patton Electronics warrants all Model 2085 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 This warranty is limited to defects in workmanship or materials and does not cover customer damage abuse or unauthorized modification If this product fails or does not perform as warranted your sole recourse shall be repair or replacement as described above Under no condition shall Patton Electronics be liable for any damages incurred by the use of this product These damages include but are not limited to the following lost profits lost savings and incidental or consequential damages arising from the use of or inability to use this product Patton Electronics specifically disclaims all other warranties expressed or implied and the installation or use of this product shall be deemed an acceptance of these terms by the user 1 1 RADIO AND TV INTERFERENCE The Model 2085 generates and uses radio frequency energy and if not installed and used properly that is in strict accordance with the manufacturer s instructions may cause interference to radio and television recep
6. N PIN RS 422 SIGNAL NOTE It is not necessary that the RS 485 device adhere to the RS 530 standard However you must make sure that the signals polarities and pairing of your connection conform to the above diagram GNDt Phe N C RCV P nn nnnnnnnnnnnn a 4 XMT XMT 3 5 RCV XMT RCV RCV E 3 XMT GND Gl N C IT and Instrumentation for Industry Am pl ican Tel 31 105298827 Fax 31 105298828 Email verkoop ampliconbenelux com Aa Datasheet 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 2085 you will need to open the case to access the terminal blocks The following instructions will tell you how to open the case connect the bare wires to the terminal blocks and fasten the strain relief collar in place so that the wires won t pull loose 1 You should already have the case open for the configuration procedure If not open the case according to the diagram in Section 3 2 2 Strip the outer insulation from the twisted pairs about one inch from the end ee a 3 Strip back the insulation on each of the 2 twisted pair wires about 25 4 Connect one pair of wires to XMT and XMT transmit positive and negative on the terminal block making careful note of which color is positive and which color is negative 5 Connect the other pair of wires to RCV and RCV receive positive and negative on the t
7. RS 485 Interface Converter provides exceptional versatility in a compact package Requiring no AC power or batteries for operation the Model 2085 supports asynchronous RS 232 data rates to 115 2 Kbps over one or two unconditioned twisted pair The Model 2085 passes one control signal in each direction and can handle up to 50 terminal drops in a multipoint polling environment The Model 2085 may be configured for high or low impedance operation carrier may be set to constantly on or controlled by RTS and the unit can operate with or without echo RTS CTS delay may be set for no delay or 8 mS The Model 2085 is equipped with either male or female DB 25 for RS 232 connection Options for twisted pair connection include terminal blocks with strain relief RU 11 RJ 45 and DB 25 male or female Silicon Avalanche Diodes provide 600 watts per wire of protection against harmful data line transient surges IT and Instrumentation for Industry Tel 31 105298827 Fax 31 105298828 Email verkoop ampliconbenelux com 3 0 CONFIGURATION The Model 2085 is configured using an eight position DIP switch and a DCE DTE switch Figure 1 below shows the location of the DCE DTE switch externally accessible on the PC board as well as the power supply daughter board and terminal block DCE DTE Switch s g C Figure 1 Top view of Model 2085 board showing DCE DTE switch
8. ce connected to the Model 2085 is a PC terminal or host computer or is S1 5 Carrier Control On _RTS Cont wired like one set the switch to DCE This setting causes the Model S1 6 Receive Impedance On 120 Ohm 2085 to behave like Data Communications Equipment and transmit S17 2 Wire 4 Wire On data on pin 3 2 Wire S1 8 2 Wire 4 Wire On 3 2 DIP SWITCH CONFIGURATION Figure 5 Summary of DIP switch default settings for set S1 The eight switches on switch set S1 see Figure 3 above configure the Model 2085 for echo mode carrier control method Note Switches S1 1 amp S1 2 should be switched simultaneously RTS CTS delay transmit off impedance receive impedance and 2 Switches S1 7 amp S1 8 should also be switched simultaneously wire 4 wire operation These switches are located internally on the Model 2085 s PC board To access switch set S1 use a small flat S1 1 and S1 2 Transmit Off Impedance blade screwdriver to pop open the Model 2085 s case as shown in i Figure 4 below Switches S1 1 and S1 2 are set together to determine whether the receiving device sees the impedance of the Model 2085 s transmitter as being high or intermediate when the transmitter is turned off The intermediate setting is useful in half duplex environments where the receiving device does not respond well to the high setting S1 1 1 2 Setting On On Intermediate Impedance Off Of
9. erate the Model 2085 relationships are shown below RJ 11 SIGNAL RJ 45 SIGNAL 4 1 CONNECTION TO THE RS 485 INTERFACE To function properly the Model 2085 must have one or two twisted pairs of metallic wire These pairs must be dry unconditioned metallic wire between 19 and 26 AWG the higher number gauges may limit distance somewhat For your convenience the Model 2085 is available with several y A GND different physical interfaces on the RS 485 side DB 25 following the B N C RS 520 standard RJ 11 jack RJ 45 jack and terminal blocks with strain relief Connection to ground is optional 4 1 1 4 WIRE CONNECTION USING THE DB 25 The DB 25 connector on the Model 2085 s RS 485 side conforms to the RS 530 interface standard When connecting to an RS 485 device that also conforms to the RS 530 standard your cable should be crossed over in the manner shown below Ounhon ONMOORWOM In most modular RS 485 applications it is necessary to use a cross MODEL 2085 RS 485 530 DEVICE over cable The diagram below shows how a cross over cable should be constructed for an environment where both the Model 2085 and the SIGNAL DB 25 PIN DB 25 PIN SIGNAL RS 485 device use a 6 wire RJ 11 connector Similar logic should be XMT 2 veeesseneeesennteeeesnnes 3 RCV followed when using RJ 45 connectors or a combination of the two XMT WA EEE A 16 RCV RCV O inn 2 XMT MODEL 2085 RS 485 DEVICE RCV 16 erai 14 XMT SIGNAL PI
10. erminal block again making careful note of which color is positive and which color is negative Ultimately you will want to construct a two pair cross over cable that makes a connection with the RS 485 device as shown below Model 2085 RS 485 Device OE EET RCV AM Te e RCV ROV Freinc XMT ROV eccceccseecesseeesseeeees XMT IT and Instrumentation for Industry Tel 31 105298827 Fax 31 105298828 Email verkoop ampliconbenelux com 6 If there is a shield around the telephone cable it may be connected to G on the terminal block We recommend connecting the shield at the computer end only to avoid ground loops A ground wire is not necessary for proper operation of the Model 2085 7 When you finish connecting the wires to the terminal block the assembly should resemble the diagram below ik oll O 8 Place the 2 halves of the strain relief assembly on either side of the telephone wire and press together very lightly Slide the assembly so that it is about 2 inches from the terminal posts and press together firmly If your cable diameter is too small or too large for our strain relief please contact our technical support We have strain relief assemblies to accommodate most cable diameters E LINX 9 A9H continued Amplicen BENELUX Datasheet 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
11. f High Impedance 1 3 RTS CTS Delay The setting for switch S1 3 determines the amount of delay between the time the Model 2085 sees RTS and when it sends CTS Note RTS CTS Delay setting should be based upon transmission timing 1 3 Setting On 8 mSec Figure 4 Opening the Model 2085 s plastic case with a small screwdriver 9 Pe i Off no delay IT and Instrumentation for Industry Am pl ican BENELUX Tel 31 105298827 Fax 31 105298828 Email verkoop ampliconbenelux com Datasheet 1 4 Echo Mode 3 4 CONFIGURATION SWITCH APPLICATIONS The setting for switch S1 4 determines whether the Model 2085 The switch settings generally needed to configure the Model 2085 echoes data back to the transmitting device half duplex mode only gg if J for various applications are shown in the table below Note Do not change switch settings until you have carefully read Section 3 3 S1 4 Setting On Echo On TYPICAL MODEL 2085 APPLICATIONS Off Echo Off Switch Point to Point Multi point gt Settings S1 5 Carrier Control Method 4w 4W HDX 2w 4w 2w The setting for switch S1 5 determines whether the carrier is S1 1 Xmt Of Imp OFF OFF OFF OFF OFF Constantly On or Controlled by RTS This setting allows for 1 2 Xmt Off Imp OFF OFF OFF OFF OFF operation in switched carrier multipoint and or hardware handshaking Sicas resis D N ON on oe an applications aay S1 5 Setting 1 4 Ech
12. fter the terminal raises RTS 8 mSec or no delay The carrier is switch selected either continuous operation or switched operation controlled by RTS 600W power dissipation at 1 mS Draws operating power from RS 232 data and control signals no AC power or batteries required 0 to 50 C 5 to 95 non condensing 2 66 x 2 10 x 0 73 Datasheet APPENDIX B Dear Valued Customer PATTON MODEL 2085 RS 232 PIN CONFIGURATIONS Thank you for purchasing Patton Electronics products We do appreciate your business I trust that you find this user manual helpful DIRECTION DCE SETTING DIRECTION We manufacture one of the widest selections of data communications products in the world including CSU DSU s network termination units powered and self powered short range modems fiber optic modems interface converters baluns electronic data switches data line surge protectors multiplexers transceivers hubs print servers and much more We produce these products at our Gaithersburg MD USA facility and can custom FG Frame Ground TD Transmit Data RD Receive Data RTS Request to Send 1 2 To Model 2085 3 4 5 CTS Clear to Send 6 7 8 From Model 2085 To Model 2085 From Model 2085 DSR Data Set Ready From Model 2085 SG Signal Ground DCD Data Carrier Detect From Model 2085 manufacture products for your unique needs To Model 2085 Data Term Ready DTR 20
13. o OFF OFF OFF OFF OFF On Controlled by RTS 1 5 Carrier Control OFF ON ON Master OFF ON Off Constantly On Slaves ON 1 6 Rev Impedance ON ON ON Master ON 7 Slaves OFF S1 6 Receive Impedance Last Slave ON The setting for switch S1 6 selects the impedance of the input 1 7 2 wire 4 wire OFF OFF ON OFF ON receiver You may select either a low impedance of 120 Ohms or a 1 8 2 wire 4 wire OFF OFF ON OFF ON high impedance of 16 kKOhms By selecting the proper impedance for each drop there may be up to 50 receivers in one application S1 6 Setting On Low 120 Ohm Off High 16 kOhm typical S1 7 and S1 8 2 Wire 4 Wire Modes Switches S1 7 and S1 8 are set together to determine whether the Model 2085 is in 2 wire or 4 wire operating mode Note 2 wire mode is half duplex only S1 7 S1 8 Setting On On 2 wire mode Off Off 4 wire mode IT and Instrumentation for Industry Am pl ican BENELUX Tel 31 105298827 Fax 31 105298828 Email verkoop ampliconbenelux com Datasheet 4 0 INSTALLATION 4 1 2 4 WIRE CONNECTION USING RJ 11 OR RJ 45 Once you have properly set the configuration switches you are ready to connect the Model 2085 to your system This section tells you The Ru 11 and RJ 45 connectors on the Model 2085 s RS 485 side how to properly connect the Model 2085 to the RS 485 and RS 232 are pre wired for a standard TELCO wiring environment The signal pin interfaces and how to op
14. pair wires correctly simply plug the Model 2085 directly into the DB 25 port of the RS 232 device Remember to insert and tighten the two captive connector screws Note If you must use a cable to connect the Model 2085 to the RS 232 device make sure it is a straight through cable of the shortest possible length we recommend 6 feet or less 4 4 OPERATING THE MODEL 2085 Once the Model 2085 is properly installed it should operate transparently as if it were a standard cable connection Operating power is derived from the RS 232 data and control signals there is no ON OFF switch All data signals from the RS 232 and RS 485 interfaces are passed straight through Additionally one hardware flow control signal is passed in each direction APPENDIX A PATTON MODEL 2085 SPECIFICATIONS Transmission Format Data Rate Range RS 232 Interface RS 485 Interface Options Transmit Line Transmit Mode Control Signals RTS CTS Delay Carrier Surge Protection Power Temperature Humidity Size Asynchronous Up to 115 200 bps Up to 9 miles DB 25 male or female DCE DTE switchable DB 25 male or female RJ 11 or RJ 45 jack terminal block with strain relief 2 4 wire unconditioned twisted pair 4 wire full or half duplex 2 wire half duplex DSR turns ON immediately after the terminal raises DTR DCD turns ON after recognizing the receive signal from the line CTS turns ON a
15. recess in the case 10 BEND the top half of the case as necessary to place it over the strain relief assembly Do not snap the case together yet 11 Insert one captive screw through a saddle washer and then insert the captive screw with the washer on it through the hole in the DB 25 end of the case Snap that side of the case closed Repeat the process for the other side This completes the cable installation process 4 1 4 2 WIRE CONNECTION Most RS 485 devices employ a two wire half duplex configuration When using this configuration be sure to first set the Model 2085 to two wire mode then use only the transmit XMT pair as shown on the following page 2085 SIGNAL RS 485 SIGNAL MM Ts sictesatessczesaveversaneatevernces AM Te ereitera esenea The above wiring pattern applies regardless of whether you are making the RS 485 connection via DB 25 RJ 11 RJ 45 or terminal blocks For specific wiring instructions please refer to the previous pages of Section 4 4 2 WIRING FOR MULTIPOINT CIRCUITS The Model 2085 supports multi point applications using either a star or daisy chain topology Both topologies require special wiring as well as specific DIP switch settings for master and slave units Note Refer to Section 3 2 2 for multipoint DIP switch settings 4 2 1 STAR TOPOLOGY Using a star topology you may connect several Model 2085s together in a master slave arrangement Maximum distance between the units will
16. tion The Model 2085 has been tested and found to comply with the limits for a Class A computing device in accordance with the specifications in Subpart J of Part 15 of FCC rules which are designed to provide reasonable protection from such interference in a commercial installation However there is no guarantee that interference will not occur in a particular installation If the Model 2085 does cause interference to radio or television reception which can be determined by disconnecting the RS 232 interface the user is encouraged to try to correct the interference by one or more of the following measures moving the computing equipment away from the receiver re orienting the receiving antenna and or plugging the receiving equipment into a different AC outlet such that the computing equipment and receiver are on different branches 1 2 CE NOTICE The CE symbol on your Patton Electronics equipment indicates that it is in compliance with the Electromagnetic Compatibility EMC directive and the Low Voltage Directive LVD of the Union European EU A Certificate of Compliance is available by contacting Technical Support IT and Instrumentation for Industry Tel 31 105298827 Fax 31 105298828 Email verkoop ampliconbenelux com 1 3 SERVICE All warranty and non warranty repairs must be returned freight prepaid and insured to Patton Electronics All returns must have a Return Materials Authorization number on the outside of the shipping
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