S751DA-S7751DA User Manual
Contents
1. das ducts ued anna nene od 21 AZ LEDCOPERATION esa aa cca ceeds usec Quid qua caes 21 4 2 1 LASER LS INDICATOR ote 21 42 2 1 22 423 AUDIO A IN OUT INDICATORS 22 424 DATA 0 IN OUT 22 42 5 CONTACT IN OUT INDICATORS cccccsscecceceesseceeesesscecerenssseeeess 22 4 2 6 ENABLED ENA 22 11 0751DA A December 2003 3 Table of Contents S751DA S7751DA User Manual 37 TEST MODE sa ns 23 gt IFROVBLESHGOTING tele au o hot ta 24 APPENDIX RS485 APPLICATION 25 A 1 INTRODUCTIONS eras as EEEE EEEn 25 A2 CONNECTION aa ia ada dia rute adia A 25 SC ONFIGUBRATION Saad 25 3 DARE E 25 4 11 0751 December 2003 S751DA S7751DA User Manual Before You Begin BEFORE YOU BEGIN Read these instructions before installing or operating this product Note This installation should be made by a qualified service person and should conform to local codes This manual provides installation and operation information To use this document you must have th2. Pin Signal SW1 Position 5 1 MANCHESTER BIPHASE OUT Pin Signal MANCHESTER BIPHASE OUT MANCHESTER BIPHASE OUT NO CONNECTION MANCHESTER BIPHASE OUT NO CONNECTION NO CONNECTION MANCHESTER BIPHASE IN NO CONNECTION MANCHESTER BIPHASE IN MANCHESTER BIPHASE IN NO CONNECTION MANCHESTER BIPHASE IN oO a AJOJN GROUND TERMINIATION TIE TO PIN 5 RI OJN GROUND 11 0751DA A December 2003 17 Installation S751DA S7751DA User Manual Table 11 J2 Connections for RS485 2 Wire Data Table 12 J2 Connections for RS485 4 Wire Data SW1 Position 6 standard offset SW1 Position 9 standard offset Position 7 1V offset Position A 1V offset Position 8 2V offset Position B 2V offset Pin Signal Pin Signal 1 GROUND SHIELD 1 GROUND SHIELD 2 NO CONNECTION 2 RS485 OUT 3 NO CONNECTION 3 RS485 OUT 4 5 VDC BIAS OUT 4 5 VDC BIAS OUT 5 RS485 5 RS485 IN 6 RS485 6 RS485 IN 7 TERMINATION TIE TO PIN 5 7 TERMINATION TIE TO PIN 5 8 GROUND 8 GROUND Table 13 J2 Connections for SensorNet Data Table 14 J2 Connections for Test Mode Loopback SW1 Position 6 SW1 Position F Pin Signal Pin Signal 1 GROUND SHIEL
3. User Manual S751DA S7751DA Fiber Optic Transmission System GE Interlogix Video Systems Group 2003 GE Interlogix Video Systems Group All Rights Reserved Any GE Interlogix Video Systems Group software supplied with GE Interlogix Video Systems Group products is proprietary and furnished under license and can be used or copied only in accordance with the terms of such license This document contains proprietary information that is protected by copyright No part of this document may be reproduced or transmitted in any form or by any means without the prior written permission of GE Interlogix Video Systems Group The information contained in this document is subject to change without notice GE Interlogix Video Systems Group in keeping pace with technological advances is a company of product innovation Therefore it is difficult to ensure that all information provided is entirely accurate and up to date GE Interlogix Video Systems Group accepts no responsibility for inaccuracies or omissions and specifically disclaims any liabilities losses or risks personal or otherwise incurred as a consequence directly or indirectly of the use or application of any of the contents of this document For the latest product specifications visit GE Interlogix Video Systems Group online at www GE Interlogix com or contact your GE Interlogix Video Systems Group sales representative For technical support before
4. Connect and apply power to module AUDIO IN OUT LED is OFF Audio input not connected to module Connect audio input to module Audio source not powered up Apply power to audio source Audio source not transmitting Check audio source and cabling DATA IN LED is OFF Tri state condition No action required Data input not connected to module Connect data input to module Data source not powered up Apply power to data source Data source not transmitting Check data source and cabling Red ENA LED Test or invalid mode selected Set DATA SELECT switch to valid format ENA LED flashing red green Both Transmitter and Receiver set to Auto Configure mode Set Transmitter or Receiver DATA SELECT switch to valid format ENA LED flashing red off Invalid or Test mode configured remotely Set DATA SELECT switch to valid format if not in Test mode 24 11 0751DA A December 2003 S751DA S7751DA User Manual RS485 Application Notes APPENDIX RS485 APPLICATION NOTES A 1 INTRODUCTION The S751DA is configurable for both full duplex four wire and half duplex two wire operation It can be used for interfacing to systems adhering strictly to the RS 485 specification and for use with systems that use a modified fail safe biased RS 485 bus A 2 CONNECTION Use high quality twisted pair wiring and make sure all connection points are clean and tight A loose connect
5. December 2003 11 Installation S751DA S7751DA User Manual 3 INSTALLATION This fiber optic link is supplied as a rack card The rack cards can also be used in a standalone configuration if placed in a 501R rack card enclosure Units should be installed in dry locations protected from extremes of temperature and humidity 3 1 RACK CARDS Rack cards are installed in a 19 inch 483 mm EIA standard card cage rack either the 515R1 or the 517R1 Follow these guidelines to install rack cards CAUTION Although rack cards are hot swappable and can be installed without turning off power to the rack the power switch on the rack power supply should be turned off and the rack power supply disconnected from any power source before installing rack cards 1 Make sure that the card is oriented right side up and slide it into the card guides in the rack until the edge connector at the back of the card seats in the corresponding slot in the rack s connector panel Seating may require thumb pressure on the top and bottom of the card s front panel CAUTION Do not press on any of the LEDs when installing cards into the rack Equipment damage may result 2 Tighten the two thumbscrews on the card until the front panel of the card is seated against the front of the rack 3 2 501R RACK CARD ENCLOSURES Follow these guidelines to install rack cards in the 501R rack card enclosure CAUTION A The rack card module can be pow
6. and after installation call 800 469 1676 Technical support is available 24 hours a day 7 days a week This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated ina commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications You are cautioned that any changes or modifications not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment Call Tech Support 800 469 1676 6 5 P M PST Monday through Friday Tech Support 541 740 3589 all other times Main 800 343 3358 or 541 754 9133 Fax Tech Support 541 752 9096 available 24 hours a day Main 541 754 7162 Web www GE Interlogix com 11 0751DA A December 2003 S751DA S7751DA User Manual Table of Contents TABLE OF CONTENTS BEFORE YOU BEGIN E 5 T INTRODUCTION 7 2 MODULE SETUP sacas reinicia Vis as in insano anna 8 2A UNPACKING THE UN T ea a a n E e ae a 8 2 2 DATA TRANSLATION la Pvc anc EE
7. materials in case it becomes necessary to return the unit CAUTION A Take all necessary precautions to protect the unit from static electricity during the following procedures Equipment damage may result 2 2 DATA TRANSLATION The data translation capability of the S751DA series is unique in the industry It enables translation from one data format to another and eliminates the need for external translation devices The translation is in the physical layer only it cannot interpret specific protocols or translate commands Due to the encoding schemes utilized in Manchester and Biphase these formats are exempt from translation Data translation examples are shown in Table 1 Table 1 Data Translations Translation TX Switch RX Switch Comments Setting Setting TTL to RS232 three wire 3 1 Signal level conversion RS232 three wire to TTL 1 3 Signal level conversion TTL to RS422 3 4 Single ended to differential conversion RS422 to TTL 4 3 Differential to single ended conversion RS232 three wire to RS422 1 4 Single ended to differential conversion RS422 to RS232 three wire 4 1 Differential to single ended conversion RS232 five wire to RS485 2 7 A RS232 handshaking bit is used to indicate tri state RS485 to RS232 five wire 7 2 Tri State detection circuitry activates handshaking bit 2 3 INPUT OUTPUT DATA FORMAT Determine the data formats required for input and output for both data chann
8. 718 mim E mm B 2 im 210 mem Gan mm 149 mm Figure 7 501R Rack Card Enclosure Mounting Data 3 3 CONNECTIONS All audio data contact and fiber connections are made to the back panel of the S751DA module When connecting audio data or contact signals always wire the signal OUT pins on the audio data equipment to the signal IN pins on the fiber links and the signal IN pins on the audio data equipment to the signal OUT pins on the fiber links See Figure 8 11 0751DA A December 2003 13 Installation AUDIO OUT AUDI IM DATA i CONTACT OUT CONTACT IM Audio Data Equipment S751DA S7751DA User Manual E AUDIO IN AUDIO OUT e DATA IN DATA OUT e CONTACT IN CONTACT OUT 751DA Link Figure 8 S751DA Fiber Link Audio Data Contact Connections 3 3 1 BACK PANEL CONNECTIONS Audio data and contact signals can be connected directly to the unit by wiring a 26 pin male D connector AMP plug part number 748474 1 pin part number 748333 4 and attaching it to audio data connector J4 on the back panel of the unit See Figure 9 Table 3 lists the signal and pin information Audio Data Optical in Optical Out Note Optical In connector is not present on 1 Fiber models Figure 9 S751DA 2 Fiber Module Back Panel Connections 14 11 0751DA A December 2003 S751DA S7751DA User Manual Installat
9. AUDIO CHANNEL 1 OUT AUDIO CHANNEL 1 OUT GROUND Connector 46 1 CONTACT CHANNEL 1 IN 2 CONTACT CHANNEL 1 IN 3 CONTACT CHANNEL 1 OUT 4 CONTACT CHANNEL 1 OUT Table 5 J2 Connections for RS232 Data Table 6 J2 Connections for RS232 Data with SW1 Position 1 Handshaking SW1 Position 2 Pin Signal Pin Signal 1 GROUND SHIELD 1 GROUND SHIELD 2 RS232 OUT 2 RS232 OUT 3 NO CONNECTION 3 RTS CTS OUT 4 NO CONNECTION 4 NO CONNECTION 5 RS232 IN 5 RS232 IN 6 NO CONNECTION 6 RTS CTS IN 7 NO CONNECTION 7 NO CONNECTION 8 GROUND 8 GROUND 16 11 0751DA A December 2003 S751DA S7751DA User Manual Table 7 J2 Connections for TTL Data SW1 Position Pin Signal 1 GROUND SHIELD NO CONNECTION TTL OUT NO CONNECTION TIE TO PIN 1 TTLIN NO CONNECTION BR Ww hd GROUND Table 9 J2 Connections for Manchester Biphase Data Table 8 J2 Connections for RS422 Data SW1 Position 4 Pin Signal 1 GROUND SHIELD RS422 OUT RS422 OUT NO CONNECTION RS422 IN RS422 IN NO CONNECTION BR GROUND SW1 Position 5 Installation Table 10 J2 Connections for Manchester Biphase Termination Unit Data
10. D 1 NO CONNECTION 2 NO CONNECTION 2 TIE TO PIN 5 3 NO CONNECTION 3 TIE TO PIN 6 4 5 VDC BIAS OUT 4 NO CONNECTION 5 SENSORNET 5 TIE TO PIN 2 6 SENSORNET 6 TIE TO PIN 3 7 TERMINATION TIE TO PIN 5 7 NO CONNECTION 8 GROUND 8 GROUND 3 3 3 BUILT IN TERMINATION The S751DA features a built in termination on the Interface Board for RS485 Manchester Biphase and SensorNet installations Refer to Table 4 and Table 10 through Table 13 18 11 0751DA A December 2003 S751DA S7751DA User Manual Installation 3 3 4 AUDIO CONNECTIONS Audio input and output signals are connected to the 26 pin connector located on the back of the module or to the screw terminal connectors on the Interface board supplied with the unit See Figure 9 and Figure 10 Refer to Table 3 and Table 4 for wiring information NOTE Signal strength remains the same regardless of type of connection Audio connection options include Balanced transmitter input to balanced receiver output Balanced transmitter input to unbalanced receiver output Unbalanced transmitter input to unbalanced receiver output Unbalanced transmitter input to balanced receiver output 1 Fora balanced connection connect the external equipment to the and pins of the desired channel 2 Foran unbalanced connection add a short jumper between the pin and the ground pin 3 3 5 FIBER OPTIC CABLE CONNECTIONS Most cable manufacturers identi
11. E and 8 2 3 J INPUT OUTPUT DATA 8 23 1 MANUAL DATA SELECTION aces e 9 2 3 2 AUTO DATA CONFIGURATION c cnesccessesscentacseessconsarsucecseoesspessursceeseeentgrace 10 2 4 OPTICAL ALARM crus ias ear ee Es dA e ad ba a ado 10 25 AUDIO LEVE ate AS MER ii io RN Odd 11 20 INPUT AMPEDANGE 2 LACAN 11 3 INSTALEA TION 12 RACK 12 3 2 501R Rack CARD ENCLOSURES 12 33 CONNECTIONS EN 13 3 3 1 BACK PANEL CONNECTIONS 14 3 3 2 INTERFACE BOARD 15 3 3 3 BUILT IN TERMINATION cas cies cence 18 3 3 4 AUDIO GONNECTIONS 19 3 3 5 FIBER OPTIC CABLE CONNECTIONS juts suki sun vontsunixenoreebeence 19 3 3 6 STANDALONE MODULE POWER 19 3 3 7 RACK MODULE POWER 20 OPERATION iether ee err eerste a Oi eee 21 Bel NORMAL OPERATION A
12. LED performs a similar function except that it refers to the audio output from the module 4 2 4 DATA D IN OUT INDICATORS The DATA IN LED indicates the level of the data signal being input to the S751DA over copper A green DATA IN LED indicates a logic HIGH is present on the data inputs An amber DATA IN LED indicates a logic LOW is present on the copper No color OFF indicates a tri state or high impedance input This LED can be used to determine the resting state of your equipment and in the RS485 states verify that a tri state is being detected properly The S751DA has special circuitry to capture data transitions and make them visible on the LEDs High speed bursts of activity previously undetectable by standard LED circuits are easily seen by this special circuitry The DATA OUT LED functions identically to the DATA IN LED except that the LED represents data that is being output from the unit This LED has the same high speed capture circuitry as the DATA IN LED 4 2 5 CONTACT C IN OUT INDICATORS The CONTACT IN OUT LEDs indicate the presence of relay contact closure signals A green CONTACT IN OUT LED indicates a closed relay contact and a red LED indicates an open relay contact 4 2 6 ENABLED ENA INDICATOR The ENABLED LED monitors the selected mode of the Data channel It has five states as follows Green indicates a valid mode has been selected Red indicates an invalid mode spare or TEST mode has been
13. ction 1 INTRODUCTION This is a guide to the installation and operation of the S751DA and S7751DA series fiber optic audio data and contact closure transmission system Please read the entire manual before installing the equipment NOTE The series numbers S751DAT and S751DAR are used to describe all models of transmitters and receivers unless noted otherwise The Series S751DA and S7751DA transmission systems offer simultaneous real time transmission of One channel of two way high quality audio One channel of two way multi protocol data MPD One channel of two way relay contact closure The S751DA system operates over one or two multimode fibers and the S7751DA uses one or two single mode fibers A complete system consists of an S751DAT transmitter and an S751DAR receiver Units are designed for installation in the 515R1 or 517R1 Card Cages or in the 501R rack card enclosure Figure 1 shows a basic system diagram TX RX Audie Audio In Out Data InfOut In Out Contact mg Optical Fiber Figure 1 S751DA System Diagram 11 0751DA A December 2003 7 Module Setup S751DA S7751DA User Manual 2 MODULE SETUP 2 1 UNPACKING THE UNIT In the event that anything is missing from the following list contact your authorized dealer or representative e S751DAT S7751DAT Transmitter or S7751DAR S7751DAR Receiver User Manual Save the original packing
14. d at one end of the system by using pull up down resistors on the data connector The S751DA has a 5 V bias pin and ground pins on the connector for this purpose Contact the equipment manufacturer s technical support for recommended resistor values and configuration TERMINATION RS485 systems need to be properly terminated in order to work reliably Two terminating resistors are used on each RS485 bus at the farthest ends of the link These resistors should be attached to the data audio connector on the back of the unit if the S751DA link is at one end of the bus If the terminating resistors are left out the tri state condition will not be detected and the bus might lock up If there are too many terminations on the bus signal levels might drop too low or driver circuitry might fail The standard value of terminating resistors for RS485 is 120Q 11 0751DA A December 2003 25 5485 Application Notes S751DA S7751DA User Manual 26 11 0751DA A December 2003
15. d strip approximately 0 25 inches 6 mm of insulation from the ends of the cable 3 Taking care to observe the correct polarization of the cable insert one lead into one of the screw sockets and tighten the screw Confirm the security of the connection with a light pull on the cable 4 Repeat step for the other conductor 5 Seat the connector in its position in the fiber unit 6 Plug the power supply into a suitable outlet 7 Power up the peripheral equipment and verify system operation by observing video on the monitor at the receiver end 3 3 7 RACK MODULE POWER CONNECTIONS Power connections are made automatically when the card is installed To supply power to the rack connect the rack power supply to an AC outlet and set the power switch to ON 20 11 0751DA A December 2003 S751DA S7751DA User Manual Operation 4 OPERATION 4 1 NORMAL OPERATION S751DA fiber links operate automatically after installation Refer to paragraph 4 4 for details on how to execute the test mode For description of LED color codes and an explanation of how to diagnose system faults using the LEDs built into the units refer to section 5 Troubleshooting 4 2 LED OPERATION The S751DA modules have built in Status Monitoring And Reliability Test System SMARTS diagnostic capabilities that include LED indicators for monitoring data and optical status The S751DA fiber units have LED indicators that describe the current state of operat
16. e following minimum qualifications A basic knowledge of CCTV systems and components A basic knowledge of electrical wiring and low voltage electrical hookups Intended use Use this product only for the purpose for which it was designed refer to the product specification and user documentation Customer Support For assistance in installing operating maintaining and troubleshooting this product refer to this document and any other documentation provided If you still have questions please contact Technical Support and Sales GE Interlogix Video Systems Group Call 800 469 1676 Fax 541 752 9096 Note You should be at the equipment and ready with details before calling Technical Support Conventions Used in this Manual Boldface or button icons highlight command entries The following WARNING CAUTION and Note statements identify potential hazards that can occur if the equipment is handled improperly WARNING Improper use of this equipment can cause severe bodily injury or equipment damage CAUTION Improper use of this equipment can cause equipment damage Note Notes contain important information about a product or procedure This symbol indicates electrical warnings and cautions This symbol indicates general warnings and cautions 11 0751DA A December 2003 5 Before You Begin S751DA S7751DA User Manual 6 11 0751DA A December 2003 S751DA S7751DA User Manual Introdu
17. els The data formats may be the same or different for each channel The data format can also differ from input to output on the same data channel 8 11 0751DA A December 2003 S751DA S7751DA User Manual Module Setup 2 3 1 MANUAL DATA SELECTION To set the data format for channel 1 see Figure 2 Figure 3 Table 2 and perform the following 1 Select a data format on the transmitter using DATA SELECT switch SW1 2 Select a data format on the receiver using DATA SELECT switch SW1 NOTE The DATA SELECT switch SW1 on the audio data card is shipped in the Auto Configure setting position 0 5 1 5 7 SW5 SW6 SW3 Figure 2 S751DA Location of Switches Figure 3 DATA SELECT Switch SW1 11 0751DA A December 2003 9 Module Setup S751DA S7751DA User Manual Table2 DATA SELECT SW1 Settings Setting Data Mode Setting Data Mode 0 Not Configured or Auto Configuration 8 RS485 two wire 2V offset 1 RS232 9 RS485 four wire standard 2 RS232 with handshake A RS485 four wire 1V offset 3 TTL B RS485 four wire 2V offset 4 RS422 two wire Not used 5 Manchester Biphase D Not used 6 RS485 two wire Standard or SensorNet E Receiver Test mode 7 RS485 two wire 1V offset F Transmitter Test mode 2 3 2 AUTO DATA CONFIGURATION The S751DA modules can be set for Auto Data Configuration where the format of the data on channel 1 is controlled from one unit either the transmitter
18. ence and 0 dBu 4 dBu audio reference level All units are shipped with the audio level switches set to 18 dBu 0 dBu audio reference level At this setting the 18 dB of operating range will support maximum audio levels of 18 dBu Switches SW5 and SW7 on the audio data card select the audio input and output levels To set the audio levels see Figure 2 and Figure 5 and perform the following swe ay SUDO INPUT LEVEL SWATCH OUTPUT LEVEL SELECT SWITCH 12 BOTH HATCHES SWATCH 1 AUDIO 1 MUST TO THE SAME POSITION SWITCH 2 NOT USER da Figure 5 AUDIO LEVEL Switches SW5 and SW7 1 Ifa low audio input level causes the output audio signal to degrade the input sensitivity of the S751DA can be increased by switching to the 8 dBu maximum scale 2 For systems running at 10 dBu typical for VCRs and DVD players switches SW5 and SW7 should be set to 8 dB 3 You can set the transmitter input to 8 dBu and the receiver output to 18 dBu to add 10 dB of gain to the system however this also increases system signal to noise ratio S N 2 6 INPUT IMPEDANCE The S751DA units are shipped with the input impedance set at high impedance high Z To select a 6000 input impedance in place of the high Z input set switch SW6 on the audio data card to 600 See Figure 2 and Figure 6 SWITCH 1 AUDIO 1 SWITCH 2 NOT USED HI Z Figure 6 IMPEDANCE Switch SW6 11 0751DA A
19. ered only by 13 5 16 VDC AC power must not be used It is recommended that the 613P power adapter be used to supply power to the module Damage to the equipment may result if AC power is used CAUTION Complete all instruction steps before supplying power to the unit 12 11 0751DA A December 2003 S751DA S7751DA User Manual Installation 1 Look inside the enclosure to determine the location of the socket for the edge connector on the card Orient the card so that it will seat in the socket and slide it into the card guides in the enclosure until the edge connector at the back of the card seats in the socket Seating may require thumb pressure on the top and bottom of the card s front panel CAUTION Do not to press on any of the LEDs when installing cards into the enclosure Equipment damage may result 2 Tighten the two thumbscrews on the card until the front panel of the card is seated against the front of the enclosure 3 Determine where the module will be installed and ensure that there is adequate space for making the various cable connections and for reading the diagnostic LEDs See Figure 7 NOTE The type of screws chosen must be suitable for the surface on which the module is to be mounted 4 Standalone modules can be attached to suitable flat surfaces with four No 6 3 mm screws After the enclosure is securely attached to a flat surface the cable connections can be made 9 31 1 15 in
20. fy the individual fibers in the cable Select appropriately terminated fiber and mark both ends with a unique identification label e g for cable no 03 fiber no 08 to ensure that the fiber connected to the near end is the same as the one connected to the far end The proper optical connection will link the transmitter s TRANSMIT OUT port to the receiver s RECEIVE IN port See Figure 9 1 Wipe the inside of the port s sleeve with a lint free pipe cleaner moistened with reagent grade isopropyl alcohol Blow dry with dry air 2 Clean the connector using a lint free cloth dampened with reagent grade isopropyl alcohol Thoroughly wipe the side and end of the ferrule Blow the ferrule dry with dry air Visually inspect the ferrule for lint 3 Fasten the fiber optic cable to the port 3 3 6 STANDALONE MODULE POWER CONNECTIONS CAUTION Standalone modules can be powered only by 13 5 16 VDC AC power must not be used Damage to the equipment will result The 501R rack card enclosure has a removable screw terminal connector for the electrical input connection Pin 1 of this connector is the GROUND terminal pin 2 is not used and pin 3 is the DC terminal as marked on the enclosure Connect the input power as follows 1 Identify the power connector and remove it from the module 11 0751DA A December 2003 19 Installation S751DA S7751DA User Manual 2 Make sure the power supply is not connected to any power source an
21. ion Table 3 J4 Audio Data Connections Pin Signal Pin Signal 1 AUDIO OUT 14 AUDIO IN 2 GROUND 15 NO CONNECTION 3 NO CONNECTION 16 GROUND 4 CONTACT IN 17 DATA OUT 5 AUDIOIN 18 DATAIN 6 NO CONNECTION 19 NO CONNECTION 7 DATA OUT 20 CONTACT OUT 8 DATA 21 CONTACT OUT 9 NO CONNECTION 22 5 VDC BIAS 10 NO CONNECTION 23 GROUND 11 AUDIO OUT 24 NO CONNECTION 12 NO CONNECTION 25 NO CONNECTION 13 NO CONNECTION 26 NO CONNECTION 3 3 2 INTERFACE BOARD CONNECTIONS The S751DA units are also supplied with an interface board that attaches directly to the back of the module The interface board contains screw terminal connectors for the audio data and contact inputs and outputs Refer to Figure 10 and Table 4 through Table 14 for interface board wiring information J2 J4 J6 J1 Mates with J4 on S751DA Back Panel Not Used Not Used Not Used Figure 10 S751DA Interface Board 11 0751DA A December 2003 15 Installation S751DA S7751DA User Manual Table 4 Interface Board Connections Pin Signal Connector J2 1 GROUND DATA CHANNEL 1 OUT DATA CHANNEL 1 OUT 5 VDC BIAS DATA CHANNEL 1 IN DATA CHANNEL 1 IN TERMINATION Orn BR GROUND Connector J4 AUDIO CHANNEL 1 IN AUDIO CHANNEL 1 IN GROUND
22. ion the current status of audio and data signals and fiber optic signal strength These indicator pairs are LASER LS and LEVEL LOSS LL AUDIO IN OUT DATA IN OUT CONTACT IN OUT and ENABLED ENA See Figure 11 The operation of the front panel LEDs is described in the following paragraphs Figure 11 Front Panel LEDs 4 2 1 LASER LS INDICATOR A green LASER LED indicates the laser is operating normally A red LASER LED indicates the laser is malfunctioning 11 0751DA A December 2003 21 Operation S751DA S7751DA User Manual 4 2 2 LEVEL LOSS LL INDICATOR This LED indicates the relative optical signal strength received at the module When sufficient optical power is being received the LED is green As the optical power decreases as happens through long fiber runs splices or connections the LEVEL LOSS LED stays green until the optical power drops below the minimum level The LEVEL LOSS LED will turn bright red to indicate an insufficient amount of optical power is being received All data will default to its failure state level to eliminate bus contention 4 2 3 AUDIO A IN OUT INDICATORS The AUDIO IN or OUT LED indicates the strength of the audio signal by varying in intensity The AUDIO IN LED remains green as long as an adequate audio signal level is being input to the module If the audio input becomes too weak the LED will turn off The LED will be red when the audio level is clipped The AUDIO OUT
23. ion on one of the wires can appear to function yet cause intermittent errors DATA LEDs may be flashing as signals pass through the system but those signals will be corrupt A 3 CONFIGURATION The S751DA multi protocol data MPD units are designed to work with virtually any RS485 system Unfortunately some systems operate on a modified version of RS485 that use a fail safe biasing to pull up down their bus during a tri state condition In a standard RS485 system when a driver on a properly terminated bus goes into tri state the voltage between the differential outputs should be less than 200 mv This is considered standard offset in the product instruction manuals A differential output tri state voltage this small can cause some non standard systems to latch up because they are designed for much larger fail safe offsets To be able to interface to such equipment the S751DA MPD units offer two more offset level modes In most cases the S751DA unit should be configured for standard offset operation When the system is operating properly the DATA IN and DATA OUT LEDs are off when there is no communication tri state and flash when data is being sent or received If the link is not functioning properly LEDs will most likely not turn off change the DATA SELECT switch on the unit to a higher offset mode First try 1 V then 2 V If switching the mode switch does not prove effective the offset level may have to be emulate
24. or the receiver To use the Auto Data Configuration feature perform the following 1 Set the DATA SELECT switch SW1 on one unit to position O default setting 2 Set the DATA SELECT switch SW1 on the other unit to the desired format 3 Ifthe data format needs to be changed for a particular channel only the DATA SELECT switch on one unit need to be changed The other unit remains in position 0 and will auto configure according to the selected data format 2 4 OPTICAL ALARM Rack cards are supplied with an alarm function that activates if the optical signal input to the module fails This alarm can be output to the rack power supply where an audible alarm and alarm output contact closure can be activated The optical alarm is controlled using DIP switch SW3 on the data card To set the optical alarm see Figure 2 and Figure 4 and perform the following ENABLE SWITCH 1 FIBER ALARM SWATCH 2 NOT USED DISABLE Figure 4 ALARM Switch SW3 1 Set switch SW3 1 to the ON position to enable the FIBER optical alarm 2 Set the switch SW3 1 to the OFF position to disable the alarm NOTE Setting ALARM switch SW3 1 to the OFF position does not affect the operation of the LEVEL LOSS LED A red LED always indicates signal loss 10 11 0751DA A December 2003 S751DA S7751DA User Manual Module Setup 2 5 UDIO LEVEL The S751DA system features dual audio level operation to meet the system requirements of 10 dBu audio refer
25. receive circuitry is working properly e LEVEL LOSS might be red or green indicating received fiber signal strength 4 The receiving unit should operate as follows e ENABLED LED is GREEN indicating a valid data format is selected e DATA OUT LED should slowly flash amber green off This indicates that the fiber path from the unit set for Test mode is reliable e DATA IN LED should be OFF indicating there is no input copper connection made e LEVEL LOSS LED should be green to off but not red indicating that sufficient optical power is being received e The AUDIO OUT LEDs should be green indicating sufficient audio output signal level 5 In addition to the LED operation described above verify a 1 kHz test tone is emitted on the audio system connected to the receiving unit After the test has been performed at one end swap switch positions and connectors to perform the test on the other end If the test is successful the copper in to fiber to copper out conversion is working in both directions 11 0751DA A December 2003 23 Troubleshooting 5 TROUBLESHOOTING 751DA S7751DA User Manual Table 15 contains troubleshooting information for the S751DA units Table 15 Troubleshooting Problem Probable Cause Solution Red LASER LED Laser is malfunctioning Replace module Red LEVEL LOSS LED Fiber not connected Connect fiber to receiver and transmitter Transmitter Receiver not powered up
26. selected Flashing red green indicates that no mode has been selected 22 11 0751DA A December 2003 S751DA S7751DA User Manual Operation Flashing green off indicates a valid mode is configured remotely Flashing red off indicates either an invalid mode or the Test mode is configured remotely 4 3 TEST MODE The Test mode enables you to verify the operation of the audio and data circuits in the S751DA units as well as the fiber connection from the S751DA transmitter to the S751DA receiver To execute the test mode perform the following Note DATA SELECT switch SW 1 can be set to position F to enable the 1 kHz test tone generator to verify and audio operation 1 Setthe DATA SELECT switch on the S751DA you are testing to F TX Test Mode At this end only wire the data connections as follows refer to Table 14 e Connect the DATA IN pin to the DATA OUT pin e Connect the DATA IN pin to the DATA OUT pin 2 Atthe opposite end set the DATA SELECT switch on the S751DA to E RX Test Mode 3 The transmitting unit should operate as follows e ENABLED LED is RED indicating that a valid data format has not been selected e DATA OUT LED is slowly flashing between amber green and off This indicates that the test mode is generating an output pattern and sending it out on copper e DATA IN LED should mimic the DATA OUT LED This indicates a good proper loopback connection and proves that the data transmit
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