ADS 1200 - connectinfo
Contents
1. Indication Meaning ST or FC connector Optical input two fibre units ST or FC connector Optical output two fibre units amp ST or FC connector Optical input output single fibre units Modular sockets A1 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 will take RJ45 plugs ADS TRA ADS TRX a ee _ De Q Dc sync syne A1 cc1 A2 cc2 D1 e D2 D3 i D4 QS Figure 1 ADS front panels TRA left similar to TRB one fibre and TRX right two fibres 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 the circuit board shown in figure 2 An ADS 1200 data board has two 8 fold S1 S2 and2. g D With 62 5 u optical fibre d Manchester biphase compatible On one fibre models other connectors may be fitted on request 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 is 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 Optelecom NKF 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 the equipment
3. ADS 1200 Audio data and contact closure multiplexers for fibre 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 fibres TRA TRB or TRX respectively see figures la b For technical specifications please 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 synchronization 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 NKF s MC 10 or MC 11 power supply cabinets Stand alone models SA option see supplementary manual needs an external 12 Vpc power supply 2 Connectors and indicators
4. d thus inserting a resistor into the non inverting data line The jumper may be jumper removed O aan A OUT 220 ohm internal B IN A B OUT O janb GND _ 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 should be at least 4V Figure 3 Current loop connections RS 485 line biasing In most cases the RS 485 data interface will work 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 see figure 2 control attachment of two bias impedance resistors to both input and inverting input see table 3 below Switch bank S1 for D1 bank S2 for D3 1 3 dwell time select see table 4 Function RS 485 mode set 40N inverting input tied to 5V over 390 Q 5 ON inverting input tied to 5V over 10 kQ 6 ON line termination 120 Q default off 7 ON input tied to GND over 10 kQ 8 ON input tied to GND over 390 Q Table 3 Choosing bias resistances dwell times and line termination for interfaces D1 and D3 Please note that the soft zero biasing adapta
5. e gt 1200 TRX 1240 TRX 1210 TRA TRB 1250 TRA TRB Property 4 Optical Wavelength s 850 850 1300 1310 1310 1550 nm Fibre MM 2x 1x SM 2x 1x Budget distance 15 19 5 6 22 44 dB km Audio Channels 1 at port 1 1 at port 2 both full duplex Bandwidth 40 to 15k Hz T O level 0 6 max dBV SNR gt 62dBA THD lt 1 at nom level T O impedance in 600 or gt 50k out lt 50 balanced Q Contact closure Channels 1 at port 1 1 at port 2 both full duplex Activation at 0 75 lt 1 5 kQ V Input 5 V pull up 10 kQ Output Normally open fail safe Output switch Data port 3 port 4 Channels per RS 232 RS 485 2 wire 4 wire port RS 422 or 20 mA digital CL Data format Asynchronous serial 2A 30 Voc Data rate per DC to 64 kbit s channel 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 15 rack 12 external SA W Mechanical ST MM FC SM for RJ45 plug 4x Opt connectors Data audio CC connectors Dimensions Weight appr 190x128x35 7TE mm 450
6. harge ESD can damage or destroy electronic components Proper precautions should be taken against ESD when opening the equipment SELV conforming to IEC 60950 1 lt 60Vpc output output voltage galvanically isolated from mains All power supplies or power supply cabinets available from Optelecom NKF comply with these SELV requirements 5 cAi us CE QS Optelecom nkf
7. ll 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 Optelecom nkf 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 Optelecom NKF 2006 Version 021403 2 ADS1200 MW03SP 2 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 disc
8. 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 please use the longer of the two Settings 1 7 will only work if 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 N Optelecom nkf 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 i 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 see 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 A1 and or B for interface A2 on the upper circuit board fig 2 A jumper on pins 1 2 will select high impedance for that port default shorting pin
9. 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 Optelecom nkf g dE ga E E i L i s2 3 OO AARARARA EERRHERE RERA 4 1 1 1 Q d le Figure 2 ADS TRA B printed circuit board details left out for clarity Please take care not to damage the optical fibre floating above the board Interface port D1 port D3 type 4 S3 1 3 2 S3 3 S3 4 RS 485 2 w 0 0 0 0 RS 485 4 w 0 1 0 1 RS 422 1 0 1 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 20 mA current loop TTY applications by pulling a 2 pin jumper C2 3 from the boar
10. s 2 and 3 will lower 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 recommended If SYNC problems occur after powering up please check the optical link first 4 Connector pin assignments The electrical port pin assignments see 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 Port 1 2 Pin Port 3 4 1 Audio in 1 RS 485 422 in 2 Audio in 2 RS 485 422 in 3 GND 3 RS 232 in 4 CCloutb 4 RS 232 out 5 CClin ref to GND 5 GND 6 CClouta 6 GND 7 Audio out 7 RS 485 422 out 8 Audio out 8 RS 485 422 out Table 5 Electrical port pin assignments see note Figure 5 8 CC1 IN ref GND CC1 OUTA 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 Al CCI while the downmost port D3 D4 is similar to the third D1 D2 Input connector pins marked also work as outputs in 2 wire mode see text N Optelecom nkf 5 Technical specifications ADS typ
11. 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 fibre 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 locations of a
12. tion 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 will provide 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 see 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 1 2 3 0 OFF OFF OFF a 0 max 1 OFF OFF ON 0 max 2 OFF ON OFF 0 17 ms gt 64000 3 OFF ON ON 0 34 ms 38400 4 ON OFF OFF 0 67 ms 19200 5 ON OFF ON 1 35 ms 9600 6 ON ON OFF 2 68 ms 4800 7 ON ON ON 5 38ms lt 2400 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 LE 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 please read the
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