English - Siqura
Contents
1. 20 mA current loop TTY applications by pulling a 2 pin jumper C2 3 from the board thus inserting a resistor into the non inverting data line The jumper may be put on pins C1 2 to save it Current loop I O should use only non inverting lines and signal ground see figure 3 the interface type should be set to RS 485 4 w Input signal voltage on A GND IN GND jumper removed a Ny A OUT 220 ohm A internal B IN B OUT O enw expC Figure 3 Current loop connections should be at least 4V RS 485 line biasing In most cases the RS 485 data interface works with the default settings If however data line biasing is called for by other equipment connected to the ADS 1200 biasing impedances may need to be applied and dwell times set With the other dip switches configured for RS 485 mode the eightfold switch banks S1 for interface D1 and S2 for interface D3 on the ADS 1200 circuit boards figure 2 control attachment of two bias impedance resistors to both input and inverting input table 3 below Switch Function RS 485 mode set bank S1 for D1 bank S2 for D3 dwell time select see table 4 inverting input tied to 5V over 390 Q inverting input tied to 5V over 10 kQ line termination 120 default off input tied to GND over 10 kQ input tied to GND over 390 Q Table 3 Choosing bias resistances dwell times and line termination for interfaces DI and D3 Note that t2. ADS 1200 Audio data and contact closure multiplexers for fiber optic links USER MANUAL 1 General description ADS 1200 systems offer combined full duplex transmission of data audio and contact closure signals all independent over one or two multimode or single mode optical fibers TRA TRB or TRX respectively see figures la 1b For technical specifications consult section 5 Two 4 wire audio channels and two contact closure channels are available on the topmost pair of modular connectors port 1 and port 2 The data section comprises two RS 485 RS 422 Manchester and biphase compatible and two RS 232 channels on the two lower modular connectors Internal dip switches control the configuration 2 4 wiring and type default is 4 wire RS 485 of the RS 4xx interfaces If necessary the RS 485 interfaces can be adapted to use biasing by default the data interfaces are transparent By removing a jumper and output rewiring port D1 can be used for digital current loop Audio input impedance is jumper selectable The contact closure outputs are potential free and open on synchronisation failure LEDs indicate power and local as well as remote sync status see section 2 and also monitor data I O The 7TE modules will slot into the backplanes of Sigqura s MC 10 or MC 11 power supply cabinets Stand alone models SA option see supplementary manual needs an external 12 Vdc power supply 2 Connectors and indicators
3. Indication ST or FC connector Optical input two fiber units ST or FC connector Optical output two fiber units ex ST or FC connector Optical input output single fiber units Meaning Modular sockets Al CC1 audiol contact closure 1 A2 CC2 audio2 contact closure 2 D1 D2 D1 see text RS 485 422 RS 232 D3 D4 RS 485 422 RS 232 System status LEDs SYNC red No sync from optical in or no internal sync orange No sync remote optical in green All sync OK DC green DC power good Data status LEDs D1 D3 red green RS 485 input to D1 3 1 0 off high Z D2 D4 green off RS 232 input to D2 4 1 0 Table 1 Connectors and indications on the ADS 1200 front panel the modular sockets take RJ 45 plugs Siqura 2015 Version 021403 2c ADS1200 MW10 ADS TRA ce Q sync A1 CC1 CC1 CC2 CC2 D1 mn mun mm D3 9 g oe my nt THT TNN g 2 De z 9 m J m g s D4 SiQuURY SiQuURX Figure 1 ADS front panels TRA left similar to TRB one fiber and TRX right two fibers 3 Configuration and installation 3a Configuration Interface selection and configuration are performed using switches and jumpers on the circuit boards of the ADS 1200 units To access these elements each unit must be opened by taking out the two front panel Phillips head screws indicated in figure 1 and partially sliding out t
4. ectronic components Proper precautions should be taken against ESD when opening the equipment 9 SELV conforming to IEC 60950 1 lt 60 Vdc output output voltage galvanically isolated from mains All power supplies or power supply cabinets available from Siqura comply with these SELV requirements 7 Product disposal Recycling The unit contains valuable materials which Qa qualify for recycling In the interest of protecting the natural environment properly recycling the unit at the end of its service life is imperative member of the TKH Group K cd us CE
5. ended If SYNC problems occur after powering up check the optical link first 4 Connector pin assignments The electrical port pin assignments table 5 are such that similar ports of different units may be connected back to back with reversed cable RS 232 interfaces excepted See figure 5 for the pin numbering convention used Pin __Port1 _ Pin __Port 3 4 Audio in Audio in GND CC lout b CClin ref to GND CClouta Audio out Audio out RS 485 422 in RS 485 422 in RS 232 in RS 232 out GND GND RS 485 422 out RS 485 422 out Table 5 Electrical port pin assignments see note Figure 5 AUDIO1 IN AUDIO1 IN GND CC1 OUT B CC 1 IN ref GND CC1 OUT A AUDIO1 OUT AUDIO1 OUT RS 485 422 1 IN RS 485 422 1 IN RS 232 1 IN RS 232 1 OUT ND GND RS 485 422 1 OUT RS 485 422 1 OUT Figure 5 Socket pin assignments The second port A2 CC2 is similar in layout to port AI CCI while the downmost port D3 D4 is similar to the third DI D2 Input connector pins marked also work as outputs in 2 wire mode see text SURVEILLANCE SOLUTIONS 5 Technical specifications ADS type gt 1200 TRX 1240 TRX 1210 TRA TRB 1250 TRA TRB Optical Wavelength s 850 850 1310 1310 1310 1550 nm Fiber MM 2x 1x SM 2x 1x Link budget 20 20 at 22 25 at 1310 dB 850 nm
6. g D For 50 125 um fiber subtract 4 dB 2 Manchester biphase compatible d On one fiber models other connectors may be fitted on request Per channel Table 6 ADS 1200 series technical specifications 6 Safety EMC ESD General The safety information contained in this section and on other pages of this manual must be observed whenever this unit is operated serviced or repaired Failure to comply with any precaution warning or instruction noted in the manual is in violation of the standards of design manufacture and intended use of the unit Installation adjustment maintenance and repair of this equipment are to be performed by trained personnel aware of the hazards involved For correct and safe use of the equipment and in order to keep the equipment in a safe condition it 1s essential that both operating and servicing personnel follow standard safety procedures in addition to the safety precautions and warnings specified in this manual and that this unit be installed in locations accessible to trained service personnel only Sigura assumes no liability for the customer s failure to comply with any of these safety requirements UL IEC EN 60950 1 General safety requirements The equipment described in this manual has been designed and tested according to the UL IEC EN 60950 1 safety requirements If there is any doubt regarding the safety of the equipment do not put it into operation This might be the case when t
7. he equipment shows physical damage or is stressed beyond tolerable limits e g during storage and transportation Before opening the equipment disconnect it from all power sources The equipment must be powered by a SELV power supply When this unit is operated in extremely elevated temperature conditions it is possible for internal and external metal surfaces to become extremely hot Optical safety This optical equipment contains Class 1M lasers or LEDs and has been designed and tested to meet IEC 60825 1 1993 A1 A2 and IEC 60825 2 2004 safety class 1M requirements Optical equipment presents potential hazards to testing and servicing personnel owing to high levels of optical radiation When using magnifying optical instruments avoid looking directly into the output of an operating transmitter or into the end of a fiber connected to an operating transmitter or there will be a risk of permanent eye damage Precautions should be taken to prevent exposure to optical radiation when the unit is removed from its enclosure or when the fiber is disconnected from the unit The optical radiation is invisible to the eye Use of controls or adjustments or procedures other than those specified herein may result in hazardous radiation exposure The installer is responsible for ensuring that the label depicted below background yellow border and text black is present in the restricted locations where this equipment is installed The
8. he soft zero biasing adaptation method used ties the inverting negative input to the higher voltage while the biasing resistor of the normal input is tied to signal ground This provides a well defined bus state when no driver is active The first three dip switches of the banks S1 and S2 on the circuit boards figure 3 are used to configure the tristate sensing dwell timing of interface D1 and D3 respectively if biasing of RS 485 lines is used to help indicate the conclusion of transmission table 3 Dwell time is approximately 10 bit length or slightly longer Switch Dwell Data Setting bank S1 for D1 time rate no bank S2 for D3 7 bit s Ppa 2 3 0 OFF OFF OFF O max 6 ON ON OFF 2 68ms 4800 default hardware tri state detect 1V differential sense not to be used together with line biasing logic high in the data directly drives the output enable i e no delay This setting is especially suitable for very low data rates Table 4 Dip switch settings for unbiased and biased RS 485 interfacing Settings 1 7 all need bias resistors to define zero Depending on the actual data rate switches 1 3 of block S1 and S2 should then be set as per table 4 read the notes below Default is all three switches off i e hardware tristate sensing Notes on dwell times When in doubt about which of two dwell times to select use the longer of the two Settings 1 7 only work if
9. he circuit board shown in figure 2 An ADS 1200 data board has two 8 fold S1 S2 and one 4 fold S3 dip switch blocks The first switch of each block and the ON positions are also indicated in figure 2 The jumper pin groups A and B control audio input impedance of Al and A2 respectively jumper C regulates the current loop impedance of one of the RS 485 data outputs see below Data interface selection the 4 dip switches in bank S3 determine the RS 4xx interface type available on ports D1 and D3 as per table 2 ee a SURVEILLANCE SOLUTIONS ag Figure 2 ADS TRA B printed circuit board details left out for clarity Take care not to damage the optical fiber floating above the board Interface type 4 RS 485 2 w 0 0 0 0 RS 485 4 w 0 1 0 1 RS 422 1 0 l 0 Table 2 Choosing RS 485 interface types using dip switch bank S3 Two wire RS 485 mode uses the input terminals for I O In older ADS VAD units for two wire mode the in and out needed to be combined as well as in and out old and new units can be used together with the old style cable layout Current loop output The RS 485 output impedance of port D1 can be made suitable for digital
10. locations of all optical connections are listed in the Indications and Connectors section of this manual Optical outputs and wavelengths are listed in the Technical Specifications section of this manual SURVEILLANCE SOLUTIONS EMC The equipment has been tested and found to meet the CE regulations relating to EMC and complies with the limits for a Class B device pursuant to Part 15 of the FCC rules These limits are designed to provide reasonable protection against interference to radio communications in any installation The equipment generates uses and can radiate radio frequency energy improper use or special circumstances may cause interference to other equipment or a performance decrease due to interference radiated by other equipment In such cases the user will have to take appropriate measures to reduce such interactions between this and other equipment Any interruption of the shielding inside or outside the equipment could cause the equipment to be more prone to fail EMC requirements Non video signal lines must use appropriate shielded CATS cabling S FTP or at least an equivalent If system components such as cabling e g coaxial cable data audio cc wiring and or the units are used outdoors ensure that all electrically connected components are carefully earthed and protected against surges high voltage transients caused by switching or lightning ESD Electrostatic discharge ESD can damage or destroy el
11. nm Link length 6 6 55 55 km Output power gt 15 gt 15 gt 7 gt 7 dBm Input sensitivity 35 35 32 32 dBm Audio Channels 1 at port 1 1 at port 2 both full duplex Bandwidth 40 to 15k Hz Sampling rate 16 bit I O level 0 6 max dBV SNR gt 62 dBA THD lt 1 at nom level Input imped lt 50 kQ or 600 Q balanced Output imped lt 50 Q balanced Contact closure Channels 1 at port 1 1 at port 2 both full duplex Activation at lt 0 75 lt 1 5 KQ to ground V Input 5 V pull up 10 kQ Output NO fail safe potential free Output switch 1 A 30 Vdc Data port 3 port 4 Channels per RS 232 RS 485 2W 4W port RS 422 or 20 mA digital CL Data format Asynchronous serial Interf support C loop TTY TTL Manch Bi ph Data rate DC to 64 kbit s Sample rate 512 ksamples s Management Front panel see text LEDS SNM Voltage module temp alarm management status configuration et al variables Environmental and Safety Operating temp 40 to 74 C Humidity max lt 95 no condensation Electrical safety AL IEC EN 60950 1 UL recognition file E242498 Laser safety IEC 60825 1 IEC 60825 2 EMC immunity EN 55024 EN 50130 4 EN 61000 6 2 EMC emission EN 55022 Class B FCC 47 CFR 15 Class B Powering Power cons 4 W Power voltages 11 15 SA Vdc Mechanical Opt connectors ST MM FC SM Data audio for RJ 45 plug 4x CC connectors Dimensions 190x128x35 7TE mm Weight appr 450
12. the lines are biased to a soft zero The serial receiver dwell timing circuitry re starts a timer on the rising edges of input data from the copper side at the same time sending an output enable signal to the serial data transmitter on the SURVEILLANCE SOLUTIONS other side of the optical link When the timer is allowed to run out no more rising edges meaning no more data this output will get no enable signals anymore and will go into tristate freeing up its line Different dwell times may be used within the system Mixing hardware tristate detect on one side and dwell time on the other side is also feasible The setting of tristate dwell time in a unit does affect the data fed into that unit 1 e the way data is output at the remote unit RS 485 line termination Line termination impedance of interfaces D1 and D3 may be set to low 120 Q using dip switch 6 of bank S1 and S2 respectively table 3 Default is high impedance Audio port impedance Audio input impedance in the ADS 1200 can be set by moving jumpers A for audio interface Al and or B for interface A2 on the upper circuit board fig 2 A jumper on pins 1 2 selects high impedance for that port default shorting pins 2 and 3 lowers the audio input impedance to 600 Ohms 3b Installation Provide the units with power and connect appropriate cabling twisted pair for long electrical links Through connecting the signal ground lines is recomm
Download Pdf Manuals
Related Search