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F270XAD

Fiber-Optic

Telephone Modem with RS485 Data

Technical Manual

Revision A

© January 2014

VERSITRON, Inc.

83 Albe Drive / Suite C

Newark, DE 19702

www.versitron.com

Safeguarding Communications Since 1958

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Содержание F270XAD

Страница 1: ...270XAD Fiber Optic Telephone Modem with RS485 Data Technical Manual Revision A January 2014 VERSITRON Inc 83 Albe Drive Suite C Newark DE 19702 www versitron com Safeguarding Communications Since 1958...

Страница 2: ...placements are not provided as part of the warranty coverage This warranty does not cover damage to products caused by misuse mishandling power surges accident improper installation neglect alteration...

Страница 3: ...1 2 1 Functional Characteristics The Model F270XAD Telephone Modem is a modem for exchange PBX or direct dial service from a telephone company connected telephone lines These units are designed to be...

Страница 4: ...C08 US or PSAC09 European providing 12 VDC 1 0A The one pin power connector for electrical input is on the back of the card There is a RJ11 jack for the telephone line on the front of the card There i...

Страница 5: ...io Signal Analog 300Hz to 3 4Khz Idle Channel Noise 65dBm Single Frequency Distortion 46dB 2nd Harmonic Distortion 55dB Talk Battery 44 to 52 VDC Loop Current 40mA max off hook Ring Signal 92Vpeak max...

Страница 6: ...l disconnection 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...

Страница 7: ...nd should not be changed 2 4 POWER REQUIREMENTS The F270XAD products are designed to operate from an AC power transformer or a DC power source in the range of 10 to 16 VDC 2 4 1 Installation with AC P...

Страница 8: ...chassis HF 20A or VMX20 with optional power supplies AC300WR the 12 pin connector P1 is used Wiring for the 12 pin connector is shown in Table 6 Hard Metric Type C connector J5 is used for backplane...

Страница 9: ...p When completely inserted the tabs will click into place 2 6 INITIAL CHECKOUT PROCEDURE F270XAD telephone modem contains no power on off switch Once power is connected the modem will go through its p...

Страница 10: ...he F270XAD Link Status Link Transmit Data TX Receive Data RX System Status System and one multi function LED for the telephone port see Table 8 for descriptions Table 8 Status Indicators LEDs Color Fu...

Страница 11: ...e driven by this unit 4 3 FUNCTIONAL DESCRIPTION The unit consists of the following circuits 4 3 1 Ring Detection 4 3 2 Analog to Digital Conversion 4 3 3 FPGA 4 3 4 Fiber Optic Transceiver Circuit 4...

Страница 12: ...s This helps reduce the supply noise being coupled into the SFP module The SFP interfaces directly with the FPGA 4 3 5 Backplane Transceiver Circuit Backplane communications are handled by the FPGA Up...

Страница 13: ...n Power off the unit for a few minutes and retry Other Contact VERSITRON for assistance Link Status Link LED is OFF Incorrect optical signal level received at receiver input 1 Check that fiber optic c...

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