User Manual
Contents
1. ers o 1 e 2 se 3 4 9 4 5 o 5 5 y SHE Fiber s e lo 9 1 1 1 Ethernet N DA Ethernet q o gt T m 0 PC N3785XA N3951 N3785XB PC Figure 3 Transmission repeater CABLE DIAMETER CALCULATION AND LIGHTNING amp SURGE PROTECTION Relation between 24VAC Cable Diameter and Transmission Distance In general the maximum allowable voltage loss rate is 10 for AC powered devices The table below shows the relationship between transmission power and maximum transmission distance under a certain specified cable diameter on condition that the 24VAC voltage loss rate is below 10 According to the table if a device rated at 50W is installed 17 meter away from the transformer the minimum cable diameter shall be 0 8000mm A lower diameter value tends to cause voltage loss and even system instability Diameter mm 1 250 2 000 283 86 451 137 716 218 1811 551 141 42 225 68 358 109 905 275 30 94 28 150 45 238 72 603 1832. 40 70 21 112 34 179 54 452 137 50 56 17 90 27 143 43 362 110 60 47 14 75 22 119 36 301 91 70 40 12 64 19 102 31 258 78 80 35 10 56 17 89 27 226 68 90 31 9 50 15 79 24 201 61 100 28 8 45 13 71 21 181 55 110 25 7 41 12 65 19 164 49 120 23 7 37 11 59 17 150 45 130 21 6 34 10 55 16 139 42 20 6 32 9 51 15 129 39 47 14 120 36 44 13 113 34 170 6 4 26 7 42 12 106 32 180 5 4 25 7 39 11 100 30 190 4 4 23 7 37 11 95 28 35 10 90 27 Lightning amp Surge Protection The product adopts multi level anti lightning and anti surge technology integrated with gas discharge tube power resistor and TVS tube The powerful lightning and surge protection barrier effectively avoids product damage caused by various pulse signals with power below 4kV including instantaneous lightning surge and static However for complicated outdoor environment refer to instruction below for lightning and surge protection e The product features with dedicated earth wire which must be firmly grounded As for surveillance sites beyond the effective protection scope it s necessary to erect independent lightening rods to protect the security devices It s recommended to separate the lightning rod from the mounting pole placing the rod on an independent pole as shown in the figure below If the product has to be installed on the same pole or pe
3. screws on the front panel that can fasten the card unit to the sub rack They must be locked by hand in a clockwise manner do not over tighten There are 18 slots on N3910 18S So it can mount 18 pieces of N3785 card unit Besides N3910 18S there N3910 1S N3910 2S N3910 3S N3910 4S N3910 6W and N3910 15R optional There are 1 slot on N3910 1S 2 slots on N3910 2S 3 slots on N3910 3S 4 slots on N3910 4S 6 slots on N3910 6W and 15 slots on N3910 15R respectively WARNING A FULL LOAD OF N3910 I5R AND N3910 18S REQUIRES FORCED AIR COOLING IN THE RACK TO AVOID OVER HEATING OF CARD UNITS WHENEVER POSSIBLE INSTALL IN EVERY OTHER SUBRACK Infinova FIBER OPTIC TRANSMISSION SYSTEM INFINOVA Forced air cooling with fan assembly unit POWER SUPPLY Power Supply for Card Units N3785 card unit is powered by a plug in power supply that is offered with the appropriate desk chassis or EIA 19 subrack Power Supply for Module N3785 card unit can be converted into a stand alone module when installing into a 1 slot chassis N3910 1S which is powered by a plug in 12VDC 1A N3921 12D 1 for 110V N3921 12D 2C for 230V power supply Plug the wires into the connectors fasten the screws to make a firm connection Connection between stand alone module and power supply N3921 power supply N3785XA XB PANEL Power on indicator red Optical link loss indicator red Chassis GND 9 pin terminal block 1
4. E Infinova s User Manual Infinova TABLE OF CONTENTS SERVICE NOTICE o 5 oo pe e REO or e Oed e m D e en PRODUCT DESCRIPTION etre e ER etd ORDERING INFORMATION 2 2 INSTALLATION iodo POWER SUPPLY O ette he e ete ee e ee SSR ee ke N3785XA XB PANEL ciere ertet Gert err UE etel o eee o a Deep xe SER NS SYSTEM DIAGRAMA ERIGI RIF TRANSMISSION REPEATER enc rint tienen rr I heroe eren CABLE DIAMETER CALCULATION AND LIGHTNING amp SURGE PROTECTION SERVICE NOTICE The installation of this product should be made by qualified personnel Do not attempt to service this product yourself Refer all servicing to qualified personnel If you require information during installation of this product or if service seems necessary contact the local suppliers or Infinova at 1 732 355 9100 in 51 Stouts Lane Monmouth Junction NJ 08852 U S A You must obtain a Return Authorization Number and shipping instructions before returning any product for service Our obligation under this warranty is limited only to the repair or replacement of any of our products provided that products are used within the specified ratings and applications and that products are applied in accordance with good engineering practices and that products are proved by our examination to be defective This warranty does not extend to any Infinova products which have been su
5. RMATION N3785XA M FO SM digital Ethernet Transceiver 10 100BASE T 2 RJ45 2 Half duplex RS485 IO 1 RS 422 IO Module 12VDC 24VAC N3785XA R FO SM digital Ethernet Transceiver 10 100BASE T 2 RJ45 2 Half duplex RS485 IO 1 RS 422 IO Card 1 Slot N3785XB M FO SM digital Ethernet Transceiver 10 100BASE T 2 RJ45 2 Half duplex RS485 IO 1 RS 422 IO Module 12VDC 24VAC N3785XB R FO SM digital Ethernet Transceiver 10 100BASE T 2 RJ45 2 Half duplex RS485 IO 1 RS 422 IO Card 1 Slot Fiber Type Optical Budget dB Wavelength nm Range km Single mode 20 1310 1550 25 Higher output lasers available for range over 25km Note 1 Distance is limited to fiber loss splices chromatic dispersion and bandwidth 2 Range estimates are based on 0 35dB km 1310nm and 0 25dB km 1550nm and include a 3 dB safety factor INSTALLATION To install data interface To install the apparatus it is necessary to allow enough space to accommodate the bend radius of the optical cable connected to it Data interface uses a 9 position terminal block connector The RJ45 connector is applied for the Ethernet port To install Card Units Push the card unit along the guide rails not in spaces between the rails There is an Infinova logo on the front panel indicating the proper orientation Press hard to make good connection to motherboard loud snap indicates firm connection There are two captive
6. RS485 D 2 RS485 D jon 3 RS485 D 4 RS485 D 5 data GND 6 RS422 out 7 RS422 out 8 RS422 in 9 RS422 in CH2 H3 Ethernet indicator Data Transmission flickering Ethernet indicator Data Transmission flickering 2 3 4 5 6 7 8 9 Figure 1 Optical port FC Data active indicator green Data active indicator green Data active indicator green Data active indicator green Ethernet port RJ45 Ethernet port RJ45 SYSTEM DIAGRAM E 6 0803 aes Keyboard Ethernet em Ethernet 1 gt 0 IBM Compatible PC N3785XA N3785XB IBM Compatible PC Figure 2 TRANSMISSION REPEATER The N3951 series is used between transceivers to extend the transmission distance of fiber optical system It magnifies the optical signal received from transmitter and sends it to receiver By using a N3951 the transmission distance of the system is doubled Typical application connection o 2 o
7. bject to acts of accident misuse abuse neglect improper application or installation improper operation or maintenance connection to an improper voltage supply or to materials which have been altered or repaired outside an authorized Infinova factory repair center Information provided by Infinova is accurate and reliable However no responsibility is assumed by Infinova for its use nor for any infringements of other rights of third parties which may result from its use No license is granted by implications or otherwise under any patent or patent rights of Infinova A WARNING TO REDUCE THE RISK OF FIRE OR SHOCK HAZARD DO NOT EXPOSE THIS PRODUCT TO RAIN OR MOISTURE DO NOT LOOK INTO OPTICAL PORTS WITH POWER ON PRODUCT DESCRIPTION Description Infinova s N3785 series provides the ability to transmit the digitally encoded signal of 1 ch 10 100Mbps self adaptive shared Ethernet and 2 ch RS485 or RS232 plus 1 ch duplex RS422 data over one optic fiber The transceiver has built in switch function In addition two RJ45 Ethernet ports are available on the transmitter and receiver The N3785 series are compatible with 9 125um single mode fibers Related product optional N3910 000X 19 1U fan assembly unit N3932 1 ch data and 1 ch video lightning protection card N3951 Transmission repeater System Diagram Transmitter Receiver RS422 RS485 RS422 RS485 lt N3785XA N3785XB Ethernet Ethernet ORDERING INFO
8. destal for lightning rod there should be strict insulation between the video cable BNC terminal power cable control cable and the standing pole of the lightning rod e For suburb and rural areas it s recommended to adopt direct burial for the transmission cables Overhead wiring is prohibited because it s more likely to encounter lightning strike Use shielded cables or thread the cables through metal tubes for burial thus to ensure the electric connection to the metal tube In case it s difficult to thread the cable through the tube all the way it s acceptable to use tube threaded cables only at both ends of the transmission line yet the length in burial should be no less than 15 meters The cable sheath and the tube should be connected to the lightning proof grounding device e Additional high power lightning proof equipment and lightning rods should be installed for strong thunderstorm or high induced voltage areas such as high voltage substation e The lightning protection and grounding for outdoor devices and wires should be designed in line with the actual protection requirement national standards and industrial standards e The system should perform equipotential grounding by streaming shielding clamping and earthing The grounding device must meet anti interference and electric safety requirements There should be no short circuiting or hybrid junction between the device and the strong grid Make sure there s a reliable gro
9. unding system with grounding resistance below 4Q below 10Q for high soil resistivity regions The cross sectional area of the earthing conductor should be no less than 25mm LPZO 7 N LPZOs Front device for surveillance system Mounting pole for front device Separated layout for the lightning rod and the standing pole 10 Infinova V 130
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