Versitron F270 Series Technical Manual Download Page 1

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A020519685

F270X

Fiber Optic

Tele-Data Modem

Technical Manual

Revision B

VERSITRON, Inc.

83 Albe Drive / Suite C

Newark, DE 19702

www.versitron.com

Summary of Contents for F270 Series

Page 1: ...A020519685 F270X Fiber Optic Tele Data Modem Technical Manual Revision B Copyright May 2002 VERSITRON Inc 83 Albe Drive Suite C Newark DE 19702 www versitron com...

Page 2: ...1 are warranted for a period of one year from date of delivery VERSITRON reserves the right to repair or at our option replace parts which during normal usage prove to be defective during the warranty...

Page 3: ...ON 2 1 GENERAL 6 2 2 SITE SELECTION AND MOUNTING 6 2 3 SWITCH AND JUMPER SETTINGS 6 2 3 1 RS 485 RS 422 Data Transmission Settings 6 2 3 2 Fiber Optic or Copper Transceiver Network Settings 7 2 3 3 In...

Page 4: ...2 4 3 FUNCTIONAL DESCRIPTION 13 4 3 1 Ring Detection 13 4 3 2 Loop Current Detection Circuit 13 4 3 3 Reverse Battery Detection Circuit 13 4 3 4 Analog to Digital Conversion 13 4 3 5 CPLD Mux Demux 13...

Page 5: ...DC POWER SUPPLY CONNECTIONS 8 LIST OF TABLES TABLE TITLE PAGE 1 DIMENSIONS OF ENCLOSURES AND CHASSIS 2 2 SW1 SWITCH SETTINGS 6 3 JP4 JUMPER SETTINGS 7 4 SW2 SWITCH SETTINGS 7 5 LINE IMPEDANCE JUMPER...

Page 6: ...optics 14 Km operational distance 1 2 DESCRIPTION OF EQUIPMENT 1 2 1 Functional Characteristics The Model F270X Fiber Optic Modems are designed to be used as an interface extender from a single line e...

Page 7: ...include both single and dual card enclosures Rack mount options include a 2 card and 20 card 19 standard rack mountable chassis For either desktop enclosure or 2 card rack mount chassis each F270X F2...

Page 8: ...FRONT VIEW F270X MODEM FIGURE 1 2 REAR VIEW F270X MODEM FIGURE 1 3 BACK PANEL F270X MODEM RJ11 RJ45 TX RX RJ11 Power Jack Audio Jack 2 Wire Data Jack Optical Interface Copper Interface 4 Wire 12Pin Co...

Page 9: ...ber Modem DataCom Product i e PLC Copper Interface Fiber Interface Fiber or copper cable interfaces depending on the application Fiber Interface Copper Interface Full duplex 4 Wire Twisted Pair RS 485...

Page 10: ...40dBm Out Band Spurious 30dBm Talk Battery 45 to 55 VDC Loop Current 20mA max off hook Ring Signal 80 150VAC 15 to 68Hz Line Impedance Jumper selectable 600 or 900 Fiber Optic Interface Models F2702 F...

Page 11: ...isconnection Care should be taken to ensure that the copper and fiber optic cables are not mechanically separated from the Modem during operation When installed in either desktop chassis or in the dua...

Page 12: ...r a copper 4 wire twisted pair or a fiber optic interface is accomplished by the following dip switch settings Position Copper Interface Fiber Interface SW2 1 On Off SW2 2 Off On SW2 3 On Off SW2 4 Of...

Page 13: ...igned to operate from an AC power transformer or a DC power source in the range of 12 to 18 VDC 2 4 1 Installation with AC Power Before inserting the VERSITRON power transformer PSAC08 US or PSAC09 EU...

Page 14: ...is used for RS 485 or RS 422 data transmission Wiring for J5 is shown in Table 9 RJ11 J6 is used in applications where data audio or both are meant to transmit on a copper instead of fiber optic netw...

Page 15: ...scriber side Modem F271X On the other hand the F271X transmitter optic should be connected to the F270X receiver optic 2 6 INITIAL CHECKOUT PROCEDURE F270X Series Modems contain no power on off switch...

Page 16: ...P reverse battery RBAT alarm ALM No audible alarm is available LEDs Color Function PWR Green Indicates operating voltage is present at the power interface connector HOOK Red Indicates that the telepho...

Page 17: ...C28 1800pF and an under voltage lockout feature This feature is produced by CR5 1N755 and CR6 1N4148 The under voltage lockout is accomplished as follows When the input voltage becomes lower than the...

Page 18: ...y from 17mA to 25mA When this condition is present U13 optocoupler detects the current and discharges C23 68 F to trigger the LOOP signal or LED 4 3 3 Reverse Battery Detection Circuit Normally Tip is...

Page 19: ...FET VN10KM the fiber optic transmitter Z2 is turned on and off respectively This is how the optical signal is transmitted out of the Modem On the receive side optical receiver Z1 takes the optical sig...

Page 20: ...th ends if possible in order to check the optical link ALARM ALM LED is ON Incorrect optical signal level received at receiver input 4 Contact VERSITRON for assistance HOOK LED is ON Possible problems...