LDM85. Fiber Optic Modem. Description. Features. Specifications

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6 Fiber Optic Modem Description he is a small, inexpensive fiber optic transmitter/receiver. It features a complete S- port as well as high speed L/S- /S- data transmit and receive.

1 6 Fiber Optic Modem Description he is a small, inexpensive fiber optic transmitter/receiver. It features a complete S- port as well as high speed L/S- /S- data transmit and receive. It is capable of data rates from DC to 5M baud. A pair of these units allows most S-C cable links to be replaced and extended with a duplex fiber optic cable. he normal 50-foot S- limit may be extended to 1. miles ( km). Fiber optic data communications provide complete EMI/FI rejection, isolation, elimination of ground loops, and reduced error rates. Data security is enhanced by almost nonexistent electromagnetic emissions. A unique multipoint capability allows local area networks to be formed with the isolation and data security of a fiber optic data highway. he is packaged in a rugged aluminum enclosure small enough to mount on the back panel of typical computer equipment, saving valuable desk and floor space. he S- connection is through male or female EIA 5-pin connectors. he fiber optic connection is either through SMA (905) or S connectors. Additional features include a / reversing switch for connection to DE (Data erminal Equipment) or DCE (Data Communication Equipment) ports, three diagnostic LED indicators, and locally connected handshake lines. he L port combined with the S- port may be interfaced to S-/ ports. Fiber optic cables may be ordered with connectors factory installed. Specifications Model Baud ate ange L Baud ate ange S- Distance (miles) Distance (km) Channel Lines (1) Control Lines (1) Modes Optical ransmitter ransmitter Numerical 0.9 Aperture ransmitter Optical Port Diameter 0 5M, 0.5M NZ 0 100K Up to 1. depending on cable Up to depending on cable,, L, L S, CS, DS, D, LSD Asynchronous -fiber full duplex, 1-fiber simplex 80 nm wavelength -11.5dBm typical output from 1 m cable, -dbm minimum output (-0 C to+85 C) 90 mm Features Á DAA AES O 5M BAUD Á S-, S-, L SYSEM INEFACES Á MULIPOIN CAPABILIY Á LED INDICAOS Á DCE/DE SWICH Á SMALL SIZE Á LOW COS Á SMA- O S-COMPAIBLE OPIC CONNECOS Á CONNECOED CABLES AVAILABLE Á 10/0VAC, +5VDC O 8 O 0VAC/DC POWE Dataforth does not authorize or warrant its products for use in life support/critical applications. Model Optical eceiver eceiver Equivalent 0.50 Numerical Aperture eceiver Optical Port 00 µm Diameter Power Budget Optical Connectors DCE/DE Switch 1 Diagnostic LEDs Power: AC operation () DC operation emperature Operating Storage elative Humidity Dimensions -5dBm to -1dBm dynamic range for logic 1,-dBm minimum input logic 1 (-0 C to+85 C), -0dBm maximum input logic 0 8dB (-0 C to +85 C), 10dB (-0 C to +55 C) SMA (905), S 10VAC or 0VAC (W wall transformer) or 10VAC to 0VAC (W transformer rating) +8VDC to 10mA or +5VDC 10mA -0 C to +85 C -0 C to +85 C 0-95%, non-condensing.75 in x.1 in x 1 in (95. mm x 5. mm x 5. mm)

2 Model Weight.7 oz (105 g) max P, PE 11.0 oz (11.8 g) MBF () >10,000 hrs Model CA (1 or ) Cable No. of Fibers Fiber ype one in CA1, two in CA Glass Core Diameter 100µm Cladding Diameter 10µm Outside Cable Diameter Max Attenuation Cable Weight Per Channel Max. Installation Load Per Channel Max. Operational Load Per Channel Min Bend adius Unloaded emperature Operating Storage elative Humidity Operational Distance with Modem 0.1 (mm) each db plus 6. db/mi (db/km) 6.6 lb/mi (7.5kg/km) 67lb (00N) lb (150N) 1. in (.0cm) -0 C to +70 C -0 C to +85 C 0-95%, non-condensing 0.9 mi (1.5 km), min. (-0 C to+55 C) ecommended Cables he optical transmitter is optimized for launching power into fiber sizes 85/15, 100/10, and 00µm plastic coated silica (PCS). Due to a lensed optical system, receiver response does not vary with fiber size. Multipoint Operation Local area networks are easily implemented with. When a talker unit raises equest o Send (S), its data is communicated to all other devices on a common loop. Data returns to the sending unit, verifying physical integrity of the loop. Alternately, if pin is strapped to pin, echo will be inhibited. Units may be ordered with this connection made internally. For multipoint installations, it is important that power be applied to all s. For small networks it will likely be acceptable to power each unit from a local source. Larger networks may benefit from routing a common low voltage power bus along with the fiber optic cable. An AC bus with isolation transformers at each unit will preserve system resistance to electrical disturbances. he wide low voltage AC and DC tolerance makes voltage drop on this bus easily accommodated. Notes: (1) = ransmit Data, = eceive Data, L and L are DCE referenced L signals, S = equest o Send, CS = Clear o Send. D = Data erminal eady, DS = Data Set eady, LSD = eceived Line Signal Detect. () 10VAC and 0VAC power transformers are available. () Ground-benign environmental conditions (no salt atmosphere, <50 C ambient temperature). 7

3 P1 Pin Descriptions P Pin Descriptions Pin 1 SHIELD Case Ground Pin 1 1VAC Pin [] ransmit Data Pin AC N (GND) Pin [] eceive Data Pin S [7] equest o Send Pin 5 CS [8] Clear o Send Pin 6 DS [6] Data Set eady Pin 7 GND [5] Signal Ground Pin 8 LSD [1] eceive Line Signal Detect Fiber Optic Pin 9 DC +8 to + VDC Power In Pin 11 L L Inverse of Was L OU Pin Echo Sup 1 Echo Suppress Control Out Pin Echo Sup Echo Suppress Control In Pin 18 +5VDC +5VDC Power In, Pull Up Power Out Pin 0 D [] Data erminal eady Pin 5 L L Inverse of Was L IN Pin numbers given are for the 5-pin connector with the 9-pin equivalent in [ ]. Figure. Alternate S-/ Connections System S-/ S-/ A Pin A B B A circuits negative relative to B For async mark = standby = logic 1. DCE-DE Switch set to DCE S- Must be >/= + VDC +5VDC L 8

4 Figure. Echo Operation Illustrated by Signal Paths and as Modified by Echo Suppress Jumper -xx S- to Fiber Echo Echo Suppressed S AC S AC -V Echo Sup. Echo Sup. -xx with P1- to jumper applied externally O -xx-1 = -xx with P1- to jumper applied internally at factory Echo Echo Suppressed and Disabled by Jumper S AC S -V AC -V Echo Sup. Echo Sup. Notes: (1) All examples shown are connected as S- and set as DCE. () Interpretation of LED symbols: LED flashing LED dark Installation For installation and check-out it is recommended that a short fiber optic cable be connected from transmit to receive on a locally connected device. hen the computer, or alternately a computer terminal, may send characters to itself. During data transmission, the transmit () and receive () LEDs will come on during data spaces. he activity (AC) LED is on when S is disabled and the optic receiver is spacing (no light). his indicates activity from a remote unit. he DCE/DE switch is provided as a convenience to allow easy hookup to either terminal or communications equipment it reverses pins and on the S- connector. LED operation as above will indicate correct setting of the switch. WANING! Observing the transmitter output power under magnification may cause injury to the eye. Observing the output under magnification may exceed the limits recommended in ANSI Z AC or DC power may be applied to the screw terminals or to pin 9 of the 5-pin connector. Alternatively the unit may be powered by +5VDC on pin 18. 9

5 Figure 5. Single-Drop Connection 0

6 Figure 6. Multipoint Connection Figure 7. Mechanical Drawing Host #1 0.6 mi (1 km) #1 0.6 mi (1 km) # # #5 Multipoint Loop # 0.6 mi (1 km) #6 epeater ( in echo mode) #.085 (5.0) (50.0) (7.) 0. (5.5) (8.0) 0.57 (1.6) 0.80 (0.) DCE DE AC.8 (85.9) 1.91 (7.9) (1.) 1. mi ( km) 1. mi ( km) 0.1 (.0) Extended Multipoint Loop epeater Pairs ( in echo mode) (5.) 0.97 (1.6) 0.5 (11.) #1 # 0.5 (6.) 0 1. mi ( km) 1. mi ( km) Long Distance Communications Dimensions: Inches (Millimeters) Model -P (1)() -S (1)() -P (1)() -S (1)() -PE (1)() -SE (1)() CA1-XXXX () CA-XXXX () LDM86CA1-XXXX () LDM86CA-XXXX () P PE Ordering Information Description Pinned S- connector Socketed S- connector Pinned S- connector, U.S. wall transformer, 10VAC Socketed S- connector, U.S. wall transformer, 10VAC Pinned S- connector, European wall transformer, 0VAC Socketed S- connector, European wall transformer, 0VAC Single-channel optical cable, SMA Dual-channel optical cable Single-channel optical cable, S Dual-channel optical cable, S U.S. wall ransformer, 10VAC European wall transformer, 0VAC Notes: (1) For internal echo suppression, add 1 to the part number. () Specify length to the nearest meter. Example: CA-0550 for 550 meters dual cable. Maximum length available is 1000 meters. () For S fiber optic connector, add -05 to the part number. 1

FOSTCDR. Industrial Serial to Multimode Fiber Optic Converter PRODUCT INFORMATION B&B ELECTRONICS. Specifications Serial Technology

FOSTCDR. Industrial Serial to Multimode Fiber Optic Converter PRODUCT INFORMATION B&B ELECTRONICS. Specifications Serial Technology FOSTCDR pn 8684R1 FOSTCDR-0812ds page 1/5 Industrial Serial to Multimode Fiber Optic Converter Data Rates up to 115.2 kbps 2.5 Mile (4 km) Range 10 to 30 VDC Input Voltage Wide Operating Temperature 2000V