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OPTICAL SYSTEMS DESIGN

DOC ID: 10100306

OSD151 OPERATOR MANUAL

PAGE 1 OF 12

OSD151

SYNCHRONOUS/ASYNCHRONOUS FIBER

OPTIC RS422/TTL MODEM

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Summary of Contents for OPTION L

Page 1: ...OPTICAL SYSTEMS DESIGN DOC ID 10100306 OSD151 OPERATOR MANUAL PAGE 1 OF 12 OSD151 SYNCHRONOUS ASYNCHRONOUS FIBER OPTIC RS422 TTL MODEM ...

Page 2: ...UPPLY CONNECTIONS 8 2 2 4 OTHER CONNECTIONS 9 2 3 OPERATION 10 2 3 1 BLOCK DIAGRAM 10 2 3 2 CONTROLS 10 3 MAINTENANCE 11 3 1 INTRODUCTION 11 3 2 EXTERNAL INSPECTION 11 3 3 ROUTINE MAINTENANCE 11 4 WARRANTY 12 4 1 WARRANTY PERIOD 12 4 2 ALL REPAIRS 12 4 2 1 WARRANTY REPAIRS 12 4 2 2 OUT OF WARRANTY REPAIRS 12 4 2 3 SITE REPAIRS 12 4 3 EXCLUSIONS 12 FIGURE 1 TYPICAL CONFIGURATION 4 FIGURE 2 D CONNEC...

Page 3: ...synchronous data rates of between 1kbps and 2 5Mbps The OSD151 can also operate asynchronously ie data only no clock from DC to 200kbps A user accessible toggle switch selects asynchronous or synchronous mode In either case no controls are transmitted through the link The OSD151 is also available for singlemode fiber This version is designated the OSD151L and operates at a wavelength of 1300nm 1 1...

Page 4: ...r synchronous or asynchronous mode and that the mode is user selected via a switch on the OSD151 1 3 PRODUCTS AND OPTIONS There are various options available for the OSD151 These options are identified in TABLE 1 below TABLE 1 PRODUCTS AND OPTIONS ITEM DESCRIPTION OSD151 SYNCHRONOUS ASYNCHRONOUS RS422 TTL MODEM OPTION L SINGLEMODE OPTION FOR THE ABOVE OSD151PP PLUG PACK FOR THE OSD151 OSD151 Tx Rx...

Page 5: ...ontrols Synchronous Asynchronous selection Optical Wavelength 850nm nominal 1310nm for OSD151L Optical Transmit Power 18 to 16dBm into 62 5 125multimode fiber 20 to 16dBm into singlemode fiber OSD151L only Receiver Sensitivity for a BER of 1 x 10 9 35dBm Optical Loss Budget 17dB at 850nm 5km of multimode fiber 15dB at 1310nm 25km of singlemode fiber Receiver Saturation 16dBm Electrical Connector 2...

Page 6: ...pin Connected to case 2 Transmit data Modem accepts data 3 Transmit data Modem accepts data 4 Receive data Modem outputs data 5 Receive data Modem outputs data 6 Not used 7 Signal ground 0V ground 8 Not used 9 Power 12V DC Power input 10 Transmit clock Modem accepts clock 11 Transmit clock Modem accepts clock 12 Receive clock Modem outputs clock 13 Receive clock Modem outputs clock FIGURE 2 D CONN...

Page 7: ...nt this product may cause radio interference in which case the user may be required to take adequate measures OPTICAL OUTPUT OPERATION WARNING Laser Safety Class 1 Laser Product per IEC 60825 1 2014 standard Class 1 The OSD151 is a Class 1 laser product All service personnel should be provided training as to the hazards of direct viewing of laser radiation and of the precautionary measures during ...

Page 8: ...vides the outside dimensions of the OSD151 FIGURE 3 DIMENSIONS 2 2 3 POWER SUPPLY CONNECTIONS The OSD151 is powered by 8 to 14VDC which may be supplied to the unit via Pin 9 of the 25 Pin D connector or via the included 1 3mm power socket mounted on the side of the unit The internal pin is the positive connection and the outer connection is Ground see Figure 4 FIGURE 4 POWER SOCKET CONNECTION DIAG...

Page 9: ...s the clock going logically high about 15ns to 20ns before the data bit Refer to Figure 5 for more details 12V DC power is fed to the unit via pin 9 of this connector or via the power socket Each optical fiber must be terminated by an ST type optical connector Before connection inspect the end of the connectors to ensure that no dust or dirt is present as it could contaminate the modem connector a...

Page 10: ... 6 BLOCK DIAGRAM 2 3 2 CONTROLS The OSD151 has just one control a toggle switch located between the optical connectors which selects either synchronous or asynchronous operation D CONNECTOR ENCODER POWER REGULATION Tx Data Rx Data Tx Clk Rx Clk Tx Data Rx Data 2MHz OSC Tx Clk Rx Clk Sync Async Sw Optical Output Optical Input Driver AMP Ext Power DECODER RS422 TTL CONVERTER ...

Page 11: ...2 EXTERNAL INSPECTION Visually check for the following Ensure that the correct power source ie 12V DC is connected to pin 9 of the D connector or to the power socket Ensure that the RS422 signal is connected to the modem correctly and that the distant OSD151 modem has been terminated correctly to any external equipment Inspect the optical connectors for any contamination and clean using isopropyl ...

Page 12: ... adequate packing material 4 2 1 WARRANTY REPAIRS Return shipments to OSD shall be at customer s expense and freight back to the customer will be at OSD expense 4 2 2 OUT OF WARRANTY REPAIRS OSD reserves the right to repair or replace any faulty goods Freight costs and insurance for both journeys are met by the user All equipment repaired by OSD will have a 3 Month Warranty from the date of dispat...

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