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MODEL7302

FE1 Optic Fiber Modem

User Manual

3onedata Co.,Ltd

Tel: +86-755-26702688 Fax: +86-755-26703485

www.3onedata.com

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Summary of Contents for MODEL7302

Page 1: ...MODEL7302 FE1 Optic Fiber Modem User Manual 3onedata Co Ltd Tel 86 755 26702688 Fax 86 755 26703485 www 3onedata com ...

Page 2: ... of the stand alone device 4 4 3 Front Rear panels of Rack mountable casing 6 5 MODEL7302 Application 7 5 1 E1 configuration 7 5 2 Connection the Twisted Pair 120 ohm to the G 703 Network 7 5 3 Settings of Switch and Jumper 8 5 3 1 Clock setting 8 5 3 2 Settings of loop back test and pseudo random code test 8 5 3 3 Framing non framing and time slot settings 9 6 Common Problems 10 ...

Page 3: ...analog digital interface Support remote loop back function valid on under framing mode Support pseudo random code test function providing convenience for the test of optic fiber line status 120km trunking free transmission distance for single mode optic fiber Capable to be communicated with V 35 fiber modem Available with complete line detection and alarm indications Available with independent str...

Page 4: ...acking After the equipment is unpacked a check shall be done for the completeness If any part is found missing please immediately contact our representative offices or agents Complete packing shall include the following items for an independent product One set of MODEL7302 FE1 Fiber Modem One FE1 Fiber Modem Operation Manual One power line FE1 Fiber Modem AC A couple of BNC connectors Please also ...

Page 5: ...el Rear Panel of MODEL7302 AC 220V AC AC power jack OFF ON Power switch When the ON button is pressed down the power supply is turned on E1 75Ω TX RX Receiving sending jack of 75ΩBNC interface in E1 E1 120Ω Jack of 120Ω RJ45 interface in E1 TX RX Receiving sending jack of optical fiber with TX as the sending terminal and RX as the receiving terminal There is a coded switch S5 on the panel which is...

Page 6: ...rrespond to S1 S2 S3 and S4 Rear Panel of MODEL7302 DC 48V DC DC 48V power supply connector The others are the same as AC Rear Panel 4 3 Front Rear panels of Rack mountable casing RACK front panel Front Panel of RACK 5V 5V main power supply indicator lamp 12V 12V fan power supply indicator lamp Under the panel is a group of indicator lamps matrix PWR power supply lamp RXD lightening upon data rece...

Page 7: ... configuration The device support two physical match impedance of the E1 interface which can automatics 120ohm balanced twisted pair and 75ohm non balanced coaxial cable interface Users can select the appropriate interface to connection dispense with any operation 5 2 Connection the Twisted Pair 120 ohm to the G 703 Network As shown 1 and 2 are sending lines 4 and 5 are receiving lines Line Sequen...

Page 8: ... setting the loop back test and pseudo random code test S5 5 is local loop back control LLOOP and optic interface is directly looped back to E1 interface OFF indicates normal operation ON indicates local loop back test The default is OFF It is used for testing whether local device is in normal operation Local Loop back Schematic S5 6 local digital loop back control DLOOP OFF indicates normal opera...

Page 9: ...time slot is selected set at OFF the corresponding time slot is not selected The rate of E1 interface is completely dependent on the number of the selected time slots For example the setting of 3rd switch to ON and all other switches to OFF indicates that 2nd time slot is selected at this moment the rate is 64K the setting of 7th and 8th switches to ON and all other switches to OFF indicates that ...

Page 10: ...lamp lightening 1 Optic interface not clean 2 Optic fiber not well inserted 3 Wrong clock setting 4 Time slots of the devices at two ends not conformance 5 Internal circuit damaged 1 Clean the connector of optic interface 2 Insert the SC connector in place 3 Refer to the description on rear panel 4 Returned to the manufacturer for repair 3 Optic LOS data loss alarm lamp lightening 1 Optic fiber in...

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