Patton electronic 1094 User's Manual
Contents
1. To gain optimum performance from the Model 1094 Series please keep the following guidelines in mind Always use twisted pair wire this is not an option Use twisted pair wire with a capacitance of 20pF ft or less Avoid twisted pair wire thinner than 26 AWG i e avoid higher AWG numbers than 26 Use of twisted pair with a resistance greater than the above specifications may cause a reduction in maximum distance obtainable Functionality should not be affected Many environmental factors can affect the maximum distances obtainable at a particular site Use the data rate distance table below as a general guideline only Model 1094 Distance Table in Miles km Data Rate Wire Gauge kbps 19 AWG 22 AWG 24 AWG 26 AWG 0 9 mm 0 6mm 0 5 mm 0 4 mm 384 4 9 7 9 3 4 5 5 2 7 4 3 1 9 3 1 768 3 1 4 9 2 2 3 5 1 8 2 9 1 3 2 0 19 APPENDIX C PATTON ELECTRONICS MODEL 1094 FACTORY REPLACEMENT PARTS AND ACCESSORIES Patton Model Description 0805US iheni American Power Cord OS0S EWR ireira European Power Cord CEE 7 OSOQSUK irihia United Kingdom Power Cord O805AUS osiin Australia New Zealand Power Cord O805DEN 00c0c0ee Denmark Power Cord OSOSF Ri vac cisascedieeteasseeese France Belgium Power Cord OBS I Nivisdisatescaisiccsanessacnes India Power Cord OBO5IS icri Israel Power Cord OS05JAP 3 eeveciie Japan Power Cord O8B05SW issii sninha Switzerland P2. TC Test Control B 22 APPENDIX D PATTON ELECTRONICS MODEL 1094 INTERFACE PIN ASSIGNMENT Continued X 21 Interface DB 15 Female Connector DTE DCE Configuration Pin Signal Frame Ground T Transmit Data A 1 2 e E C Control A e R Receive Data A ET Indication A 6 S Signal Element Timing A 7 BT Byte Timing A 8 SGND Signal Ground 9 T Transmit Data B WO seta esana C Control B Wipwasasiadar R Receive Data B 12 oases idiin I Indication B 1D cheeks S Signal Element Timing B 14 EE BT Byte Timing B Copyright 1997 Patton Electronics Company All Rights Reserved 23
3. Module already installed If you need to install a different QuickConnect Module follow these steps Removing the Existing QuickConnect Module 1 Turn the power switch off Leave the power cord plugged into a grounded outlet to keep the unit grounded 2 Loosen the two thumbscrews on the module by turning them counterclockwise 3 Grasp the two thumbscrews and gently pull the module from the unit Apply equal force to the thumbscrews to keep the module straight during the removal process Installing the New QuickConnect Module 1 Make sure the power switch is off Leave the power cord plugged into a grounded outlet to keep the unit grounded 2 Hold the module with the faceplate toward you and align the module with the guide slots in the rear panel of the Model 1094 3 While keeping the module s faceplate parallel with the Model 1094 rear panel slide the module straight in so that the card edge contacts line up with the socket inside the chassis NOTE The card edge connector should meet the socket when it is almost all the way into the chassis If you encounter a lot of resistance remove the module and repeat Steps 2 and 3 4 With the card edge contacts aligned with the socket firmly seat the module by using your thumbs to apply pressure directly to the right and left edges of the module faceplate Applying mod erate and even pressure should be sufficient to seat the mod ule You should hear it snap in
4. cause interference to radio and tele vision reception The Model 1094 has been tested and found to com ply 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 interfer ence will not occur in a particular installation If the Model 1094 does cause interference to radio or television reception which can be deter mined by removing power from the unit 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 1 3 SERVICE All warranty and non warranty repairs must be returned freight pre paid and insured to Patton Electronics All returns must have a Return Materials Authorization number on the outside of the shipping contain er This number may be obtained from Patton Electro
5. data terminal equipment is operating properly and can be used for a test If a fault is indicated call a technician or replace the unit C Perform a BER bit error rate test on each unit using a separate BER tester If the BER test equipment indicates no faults but the data terminal indicates a fault follow the manufacturer s checkout procedures for the data terminal Also check the interface cable between the terminal and the Model 1094 5 3 2 REMOTE DIGITAL LOOPBACK RDL The Remote Digital Loopback RDL test checks the performance of both the local and remote Model 1094 and the communication link between them Any characters sent to the remote Model 1094 in this test mode will be returned back to the originating device see Figure 6 below Local 1094 i Remote 1094 S a Se E La Figure 6 Remote Digital Loop To perform an RDL test follow these steps A Activate RDL This may be done in one of two ways First by moving the front panel toggle switch DOWN to Remote Or second by raising the REMOTE LOOPBACK signal on the terminal interface for pin numbers see Appendix D B Perform a BER bit error rate test on the system using BER testers on both ends C Ifthe BER test equipment indicates a fault and the Local Analog Loopback test was successful for both Model 1094s you may have a problem with the line between the Model 1094s You should inspect the line for proper connections 15 5
6. is installed in one or both base units one base unit must be configured for receive recover clock source The particular application will dictate which unit must be configured for receive recover clock source Switch S1 3 RTS CTS Delay Switch S1 3 is used in combination to determine the amount of delay between the time RTS is activated and the 1094 activates the CTS 1 3 Function On Short delay 1 4 ms Off Long delay 8 20 ms Switch 1 4 LDL Control Switch S1 4 determines whether the frontt panel switch can acti vate a Local Digital Loopback LDL diagnostic test 1 4 Function On LDL Control Enabled Off LDL Control Disabled Switch 1 5 Carrier Control The setting for switch S1 5 determines whether the carrier is con stantly on or controlled by RTS This setting allows for operation in switched carrier or hardware handshaking applications 1 5 Setting On Controlled by RTS Off Constantly ON Switch 1 6 DTE Control of RDL The setting for switch S1 6 determines whether DTE control of remote digital loopback test is enabled or disabled If DTE control is disabled the RDL test can only be initiated by the front panel switch 1 6 Setting On DTE control enabled Off DTE control disabled Switch 1 7 DTE Control of LAL The setting for switch S1 7 determines whether DTE control of local analog loopback test is enabled or disabled If DTE control is dis abled the LAL test can only be in
7. local Model 1094 and one at the remote Model 1094 To use the V 52 BER test by itself both operators should simultaneously follow these steps 1 Locate the 511 511E toggle switch on the front panel of the Model 1094 and move it DOWN This activates the V 52 BER test mode and transmits a 511 pseudorandom test pattern to the other unit If any errors are received the receiving Model 1094 s red ER LED will blink sporadically NOTE For this test to function the 511 switch on both Model 1094 s must be on 2 Ifthe test indicates no errors are present move the V 52 toggle switch UP activating the 511 E test The 511 E test transmits the 511 pseudorandom test pattern and injects intentional errors about once per second If the test is work ing properly the receiving Model 1094 s red ER LED will blink regularly A successful 511 E test will confirm that the link is in place and that the Model 1094 built in 511 generator and detector are working properly 3 This test can be done by one operator by first activating the local analog loop or remote digital loop 17 APPENDIX A PATTON ELECTRONICS MODEL 1094 Transmission Format Transmission Line Clocking Distance Data Rates Carrier Control RTS CTS Delay Diagnostics LED Status Indicators Isolation Surge Protection DCE DTE Interface Twisted Pair Interface Power Temperature Range Altitude Humidity Dimensions Weight SPECIFICA
8. terminal block with spring type contacts please refer to the Model 1094 Service Manual for wiring instructions WARNING There are no user serviceable parts in the power supply section of the Model 1094 Voltage setting changes and fuse replacement should only be performed by qualified serv ice personnel Any questions may be answered by contacting Patton Electronics Technical support at 301 975 1007 sup port paitton com or hitp www patton com 4 3 1 AC POWER CONNECTION The two AC power supply options Standard and Universal are equipped with a male IEC 320 power connection A domestic US power supply cord is supplied with the unit at no extra charge To con nect the standard or universal power supply follow these steps 1 Attach the power cord supplied to the shrouded male IEC 320 connector on the rear of the Model 1094 2 Plug the power cord into a nearby AC power outlet 3 Turn the rear power switch ON 12 5 0 OPERATION Once the Model 1094 is properly configured and installed it should operate transparently This sections describes power up read ing the LED status monitors and using the built in loopback test modes 5 1 POWER UP Before applying power to the Model 1094 first be sure that you have read Section 4 3 and that the your power source matches the power rating shown on the bottom label of the Model 1094 Failure to do so could result in damage to the unit and connected equipment a
9. 3 3 LOCAL DIGITAL LOOPBACK LDL The Local Digital Loopback LDL test checks the local and remote 1094s and all communication paths In LDL the TX RX circuit of the local 1094 closes thereby allowing characters sent from BOTH the local terminal and remote terminal to loop back echo to themselves See Figure 7 below To accurately perform LDL diagnostics techni cians must send characters or BER diagnostics from each end To perform a LDL follow the instructions below N A oa g Ll Figure 7 Local Digital Loop A On the bottom of the unit turn S1 4 to the ON position B Enable LDL by moving the front panel toggle switch up to Local Or by raising the signal LL on the terminal interface for pin numbers see Appendix D C Perform a BER bit error rate test on the system using BER testers on both ends D If the BER test equipment indicates a fault and the Local Analog Loopback test was successful for both Model 1094s you may have a problem with the line between the Model 1094s You should inspect the line for proper connections NOTE LDL will only work when S1 4 is ON 16 5 3 4 V 52 BER TEST GENERATOR The Model 1094 has a built in test pattern generator and detector It can be invoked at both ends of a link simultaneously or it can be used with the Local Analog or Remote Digital Loopbacks The follow ing example requires two operators one to initiate and monitor the test at the
10. 94 s DIP switches are presented in the summary table and descriptions on the following pages REAR S2 FRONT jij U Figure 1 Underside of Model 1094 Showing External DIP Switch Locations S1 S2 I e 1 Ji lose Up of Configuration Switches ON OFF eNe 7 om 4 pem 4 lt lt I N 2 q Figure 2 gt gt o oo Colm oA com oom oN oom Q S1 SUMMARY TABLE Position Function Factory Default S1 1 Clock Source On 1 2 Clock Source On ema S1 3 RTS CTS Delay On Short Delay S1 4 LDL Off Disabled S1 5 Carrier Control Off Constant S1 6 DTE Control of RDL Off Disabled S1 7 DTE Control of LAL Off Disabled S1 8 V 54 Enable Disable Off Enabled See Note in SWITCH SET S1 Below for X 21 Clock Sources 3 1 1 Switch Set S1 The configuration switches on S1 set clock source RTS CTS delay carrier control loopback tests The default settings are summa rized in the table above Switches S1 1 and S1 2 Clock Source Switches S1 1 and S1 2 are set in combination to determine the source of timing for the Model 1094 S1 1 S1 2 Setting On On Internal On Off Receive recover Off On External transmit clock Off Off Not a valid setting NOTE when an X 21 QuickConnect module
11. TIONS Synchronous Unconditioned twisted pair 19 26 AWG Internal external or receive loopback Up to 4 9 miles 7 9 km 19 AWG 384 kbps 384 and 768 kbps switch selectable Constantly on or Controlled by RTS No delay short delay 1 4 ms long delay 8 20 ms V 52 compliant bit error rate pattern 511 511E pattern generator and detector with error injection mode V 54 compliant local analog loopback and remote digital loopback activated by front panel switch or via serial interface TD RD RTS CD DTR ER and TM test mode Minimum 3000V RMS via transformers Immune to IEC 801 5 Level 2 1kV Field replaceable Quick Connect TM modules 8 position modular jack RJ 45 115 230 VAC switch selectable 50 60 Hz 85 256 VAC 50 60 Hz universal input option 48 VDC option 5 watts 0 50 C 32 122 F 0 15 000 feet 5 to 95 non condensing 7 3 X 6 6 x 1 62 185mm x 168mm x 41mm 2 02 Ibs 1 0 Kg 18 APPENDIX B PATTON ELECTRONICS MODEL 1094 CABLE RECOMMENDATIONS The Patton Model 1094 operates at frequencies of 512 kHz or less and has been performance tested by Patton technicians using twisted pair cable with the following characteristics Wire Gauge Capacitance Resistance 19 AWG 0 9mm 83nF mi or 15 72 pF ft 0163 Ohms ft 22 AWG 0 6mm 83nF mi or 15 72 pF ft 0326 Ohms ft 24 AWG 0 5mm _ 83nF mi or 15 72 pF ft 05165 Ohms ft 26 AWG 0 4mm_ 83nF mi or 15 72 pF ft 08347 Ohms ft
12. USER MANUAL MODEL 1094 KiloModem 768 High Speed Baseband Modem Ps PATTON Es PlectronicsTo ISO ae ee ooe SALES OFFICE oc J Revised 04 13 99 301 975 1000 RIIPLED TECHNICAL SUPPORT 301 975 1007 An ISO 9001 http www patton com Certified Company 1 0 WARRANTY INFORMATION Patton Electronics warrants all Model 1094 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 modifi cation 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 consequen tial 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 1094 generates and uses radio frequency energy and if not installed and used properly that is in strict accordance with the manufacturer s instructions may
13. itiated by the front panel switch S1 7 Setting On DTE control enabled Off DTE control disabled Switch 1 8 V 54 Enable Disable The setting for switch S1 8 determines whether the Model 1094 will respond when it receives the V 54 sequence If you suspect the Model 1094 may be getting tricked into the loopback test by false detection of user data you can try setting this to Disable 1 8 Setting On Disabled Off Enabled 3 1 2 Switch Set S2 The settings for DIP switches S2 1 through S2 4 determine the synchronous data rate of the Model 1094 All possible settings includ ing the default are shown below S2 1 S2 2 S2 3 S2 4 Setting Off On On On 384 kbps On Off Off Off 768 kbps default 7 4 0 INSTALLATION Once the Model 1094 is properly configured it is ready to connect to the twisted pair interface to the serial port and to the power source This section tells you how to make these connections 4 1 CONNECTION TO THE TWISTED PAIR INTERFACE The Model 1094 supports communication between two terminal devices at distances to 4 9 miles 7 9 km and data rates to 768 kbps There are two essential requirements for installing the Model 1094 1 These units work in pairs Therefore you must have one Model 1094 or a compatible model at each end of a two twisted pair interface 2 To function properly the Model 1094 needs two twisted pairs of metallic wire These twisted pairs must be unconditioned dry metal
14. l During the 511 or 511 E test ER will flash to indicate that the Test Pattern Detector has detected a bit error TM Will glow green to indicate that the Model 1094 has been placed in Test Mode The unit can be placed in test mode by the local user or by the remote user 5 3 DIAGNOSTICS The Model 1094 is equipped with three sets of diagnostics to eval uate the condition of the local and remote units as well as the twisted pair link between them local analog loopback LAL and remote digital loopback RDL according to the CCITT V 54 Standard and bit error rate BER test according to the CCITT V 52 Standard 5 3 1 LOCAL ANALOG LOOPBACK LAL The Local Analog Loopback LAL test checks the operation of the local Model 1094 Any data sent to the local Model 1094 in this test mode will be echoed returned back to the user device For example characters typed on the keyboard of a terminal will appear on the ter minal screen see Figure 5 below _7 Local 1094 Figure 5 Local Analog Loop To perform an Analog Loopback test follow these steps A Activate Local Analog Loopback This may be done in one of two ways First by moving the front panel toggle switch UP to Local Second by raising signal LOCAL LOOPBACK on the terminal interface for pin numbers see Appendix D Once LAL is activated the Model 1094 transmit output is connected to its own receiver The TM LED should be lit continued 14 B Verify that the
15. lic wire between 19 and 26 AWG 4 mm and 9 mm inversely the higher AWG gauges may limit distance somewhat Standard dial equalization equipment or standard flat modular telephone type cable are not acceptable 4 1 1 TWISTED PAIR CONNECTION USING RJ 45 The Model 1094 uses a modular RJ 45 jack for twisted pair line connection The signal pin relationships are shown below RJ 45 SIGNAL EE TERTE XMT E E E XMT E OE ee N C r epee EA GND 3 een EE GND 5 EEIE N C 6 r AEREE EE RCV 8 G e RCV Connection to ground is optional When connecting two Model 1094s it is necessary to use a crossover cable The diagram below shows how a crossover cable should be constructed RJ 45 Cable 4 Wire SIGNAL PIN PIN SIGNAL XMT fesse 8 RCV XMT T RCV GND 7 E 5 GND GND a 4 GND RCV nen 2 XMT RCV re 1 XMT Connection to ground is optional 4 2 CONNECTION TO THE SERIAL PORT The serial port interface on the Model 1094 uses interchangeable Quick Connect Modules Each Quick Connect Module has a 50 pin card edge connector on one side and a serial port interface on the other Figure 3 below shows how a Quick Connect Module plugs into the back of the Model 1094 Figure 3 Installation of Model 1094 Plug in Serial Interface Module 4 2 1 CHANGING QUICKCONNECT MODULES When you purchase a particular version of the Model 1094 it should be shipped to you with the appropriate QuickConnect
16. nd may constitute a fire hazard f your Model 1094 is AC powered plug the AC power cord into both the Model 1094 and the AC outlet Then power up the unit using the rear power switch If your Model 1094 is DC powered and has been connected to the DC power source according to the instructions in Section 4 3 turn on the DC power supply and then power up the unit using the rear power switch 5 2 LED STATUS MONITORS The Model 1094 features seven front panel LEDs that monitor transmit data receive data request to send carrier detect data termi nal ready test modes and error conditions Figure 4 below shows the front panel location of each LED Following Figure 6 is a description of each LED s function pu PATTON KiloModem PS High Speed Sync Short Range Modem H ElectronicsTo Test Modes RD RTS CD DTR eeee e Figure 4 Model 1094 Front Panel TD and RD Will glow red to indicate an idle condition of Binary 1 data on the respective terminal interface signals Green indicates Binary O data RTS Will glow green to indicate that the Request to Send signal from the terminal is active cD Will glow red if no carrier signal is being received from the remote modem Green indicates that the remote modem s carrier is being received 13 DTR Will glow green to indicate that the Data Terminal Ready signal from the terminal is active ER Will glow red to indicate the likelihood of a Bit Error in the received signa
17. nics Technical Service at TEL 301 975 1007 Email support patton com www http www patton com NOTE 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 1094 Technical Support hours 8AM to 5PM EST Monday through Friday 2 0 GENERAL INFORMATION Thank you for your purchase of this Patton Electronics product This product has been thoroughly inspected and tested and is warrant ed for One Year parts and labor If any questions or problems arise during installation or use of this product please do not hesitate to con tact Patton Electronics Technical Support at 301 975 1007 2 1 FEATURES e Synchronous data rates of 384 and 768 kbps e Frequency Shift Key FSK modulation e Full or half duplex operation over two twisted pair 4 wire e Point to point distances up to 4 9 miles 19 AWG 384 kbps e V 54 compliant local and remote loopback tests DTE or front panel activated e V 52 compliant Bit Error Rate BER test pattern generator e Replaceable DTE DCE QuickConnect interface modules e Internal external or receive recovered clocking options e Automatic equalization e Made in the U S A 2 2 DESCRIPTION The Patton Model 1094 Synchronous Short Range Modem is designed for point to point high speed communication over 4 wires two twisted pair Supporting
18. ower Cord O7M1090SVC ee Service Manual O7M1094 1 ceeeeeeeeeeeeee User Manual 20 APPENDIX D PATTON ELECTRONICS MODEL 1094 INTERFACE PIN ASSIGNMENTS RS 232 RS 530 Interface Pin Description 5 OONDOARWDY DB 25 Female Connector DCE Configuration Signal FG Frame Ground TD Transmit Data RD Receive Data RTS Request to Send CTS Clear to Send DSR Data Set Ready SGND Signal Ground CD Carrier Detect RC Receive Timing B CD Carrier Detect B XTC External Transmit Clock TC Test Control B CTS Clear to Send TD Transmit Data B TC Test Control A RD Receive Data RC Receive Timing LLB Local Line Loop RTS Request to Send DTR Data Transfer Rate DL Remote Digital Loop DSR Data Set Ready DTR Data Transfer Rate XTC External Transmit Clock TM Test Mode 21 APPENDIX D PATTON ELECTRONICS MODEL 1094 INTERFACE PIN ASSIGNMENTS Conti nued V 35 Interface M 34F Female Connector DCE Configuration Signal SGND Signal Ground RTS Request to Send CTS Clear to Send DSR Data Set Ready CD Carrier Detect DTR Data Transfer Ready LLB Local Line Loop TM Test Mode RDL Remote Digital Loop TD Transmit Data RD Receive Data TD Transmit Data B RD Receive Data B XTC External Transmit Clock RC Receive Timing XTC External Transmit Clock RC Receive Timing TC Test Control A
19. switch selectable data rates of 384 and 768 kbps the Model 1094 is perfect for connecting two bridge routers or for similar campus applications at distances up to 4 9 miles 7 9 km The Model 1094 incorporates built in V 54 loopback tests a V 52 BERT pattern generator and seven front panel LED indicators Data integrity is enhanced by automatic equalization and gain control The Model 1094 also incorporates transformer isolation and surge protection to guard data and connected equipment against the hazards of ground loops and transient surges Clocking options include internal external and receive recover clock The Model 1094 features replaceable DCE DTE QuickConnect interface modules Several different modules are available call Patton Sales for details Line connection is made by RJ 45 jack Internal AC power supply options include 120 or 230VAC switchable 85 256VAC universal or 48VDC 3 0 CONFIGURATION The Model 1094 is equipped with one set of eight DIP switches and one set of four DIP switches all externally accessible These DIP switches allow configuration of clock source carrier control loopback tests and data rate This section describes switch locations and explains all possible configurations 3 1 EXTERNAL DIP SWITCH SETTINGS The Model 1094 s DIP switches are located on the underside of the unit see Figure 1 below Figure 2 shows the orientation of the switch set All possible settings for the Model 10
20. to place 5 To secure the module in place push the thumbscrews into the chassis and turn the screws clockwise to tighten 10 4 2 2 CONNECTION TO A DTE DEVICE The serial port on most QuickConnect interface modules all except the X 21 module is hard wired as a DCE Therefore these modules want to plug into a DTE such as a terminal PC or host When making the connection to your DTE device use a straight through cable of the shortest possible length we recommend 6 feet or less When purchasing or constructing an interface cable please refer to the pin diagrams in Appendix D as a guide 4 2 3 CONNECTION TO A DCE DEVICE If the Model 1094 s QuickConnect interface module is hard wired as a DCE all except the X 21 module you must use a null modem cable when connecting to a printer modem multiplexer or other DCE device This cable should be of the shortest possible length we recommend 6 feet or less When purchasing or construct ing a null modem interface cable use the pin diagrams in Appendix D as a guide Note Pin out requirements for null modem applications vary widely between manufacturers If you have any questions about a specific application contact Patton Technical Support TEL 301 975 1007 Email support patton com www http www patton com 4 2 4 RECONFIGURING THE X 21 QUICKCONNECT MODULE The serial port on the X 21 QuickConnect Module is default wired as a DCE but ma
21. y be switched to a DTE This is done by reversing the orientation of the DCE DTE strap as described below To reverse DCE DTE orientation remove the module according to the instructions in Section 4 2 1 The DCE DTE strap is located on the bottom side of the module s PC board The arrows on the top of the strap indicate the configuration of the X 21 port for example if the DCE arrows are pointing toward the DB 15 connector the X 21 port is wired as a DCE Reverse the DCE DTE orientation by pulling the strap out of its socket rotating it 180 then plugging the strap back into the socket You will see that the DCE DTE arrows now point in the opposite directions showing the new configuration of the X 21 port Reinstall the module according to the instructions in Section 4 2 1 11 4 3 CONNECTION TO THE POWER SOURCE The Model 1094 is available with three power supply options The Standard power supply option Model 1094 or 1094 230 is factory configured for either 115 or 230 VAC depending on how the product is ordered and is available with a variety of domestic and inter national power cords see Appendix C The Universal Interface power supply option Model 1094 UI operates in environments ranging from 85 to 265 VAC with no re con figuration necessary see Appendix C for available domestic and inter national power cords The DC power supply option Model 1094 DC operates in 48 VDC environments and is equipped with a 3 pin
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