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Appendix A  Pinouts 

Installation and Operation Manual 

A-2 

FOM-E1/T1 /R Modem Card 

FOM-E1/T1 Ver. 2.0 

A.2  FOM-E1/T1 /R Modem Card 

The 25-pin D-type female connector on the rear panel of the ASM-MN-214 
modem rack serves as an alarm relay port. 

Table A-3

 lists the functions of the 

DB-25 pins. 

Table A-3  ASM-MN-214, DB-25 Pin Assignment 

Pin Contact 

Alarm 

Type 

10, 22 

Normally Closed 

10, 21 

Normally Open 

Minor 

13, 25 

Normally Closed 

13, 24 

Normally Open 

Major 

The relay positions are shown in the non-energized (alarm active) state. 

 

 

Summary of Contents for FOM-E1

Page 1: ...FOM E1 T1 E1 T1 Fiber Optic Modem Version 2 0 INSTALLATION AND OPERATION MANUAL The Access Company...

Page 2: ......

Page 3: ...ion of the Manual or the FOM E1 T1 You are prohibited from and shall not directly or indirectly develop market distribute license or sell any product that supports substantially similar functionality...

Page 4: ...ce or use of the FOM E1 T1 and in no event shall RAD s liability exceed the purchase price of the FOM E1 T1 DISTRIBUTOR shall be responsible to its customers for any and all warranties which it makes...

Page 5: ...the fiber optic cable is intact and is connected to the transmitter Do not attempt to adjust the laser drive current Do not use broken or unterminated fiber optic cables connectors or look straight at...

Page 6: ...tened securely with a screwdriver after both initial installation and subsequent access to the panels Connecting AC Mains Make sure that the electrical installation complies with local codes Always co...

Page 7: ...terface ISDN Analog voice E M SELV Safety Extra Low Voltage Ports which do not present a safety hazard Usually up to 30 VAC or 60 VDC xDSL without feeding voltage Balanced E1 T1 Sub E1 T1 TNV 1 Teleco...

Page 8: ...ling the equipment in a rack make sure to remove all traces of paint from the mounting points Use suitable lock washers and torque If an external grounding lug is provided connect it to the earth bus...

Page 9: ...Emission Requirements This Class A digital apparatus meets all the requirements of the Canadian Interference Causing Equipment Regulation Cet appareil num rique de la classe A respecte toutes les exig...

Page 10: ...4 1998 Information technology equipment Immunity characteristics A1 2001 A2 2003 Limits and methods of measurement Safety EN 60950 1 2001 Information technology equipment Safety Part 1 General require...

Page 11: ...r E1 interface select its type balanced or unbalanced by setting the BAL UNBAL section of the rear panel DIP switch to appropriate position Table below provides details on the functions of the DIP swi...

Page 12: ...r optic interface 3 Connect the power cable first to the modem then to the mains Operation starts when the power is applied to the rear panel power connector 2 Operating FOM E1 T1 1 Check that SW1 of...

Page 13: ...ecting the Interfaces 2 3 Connecting the Fiber Optic Interface 2 3 Connecting the E1 T1 Interface 2 4 Connecting the Alarm Relay 2 4 2 7 Connecting to Power 2 4 Connecting AC Power 2 4 Connecting DC P...

Page 14: ...Ver 2 0 DC Supply 5 3 Power Supply Redundancy 5 3 5 3 FOM E1 T1 R Front Panel 5 4 5 4 Installing the FOM E1 T1 R Card 5 5 Setting the Jumpers and Switches 5 5 Installing FOM E1 T1 R in the ASM MN 214...

Page 15: ...ugh an RJ 45 connector or BNC connectors LED indicators on the front panel show the operational status of the modem Alarms indicating faults in modem operation are relayed via dedicated port Local and...

Page 16: ...10 62 5 125 multimode LED 18 31 ST SC 9 3 5 7 1310 9 125 single mode Laser 12 40 ST SC FC 50 0 31 0 1310 9 125 single mode Laser long haul 2 40 ST SC FC 70 0 43 4 1550 9 125 single mode Laser 12 38 ST...

Page 17: ...ck activation FOM E1 T1 features a dry contact alarm port DB 9 for attaching an external alert device When an AIS is detected at the optical or electrical interface the modem transparently converts th...

Page 18: ...rocessing stages Signal conversion Data clock recovery Data transfer Signal Conversion Electrical signals are converted into an optical signal using an infrared light emitting diode or laser transmitt...

Page 19: ...rmally Open and Normally Closed using different pins Maximum Ratings 1A 60 VDC 30 VAC Connector 9 pin D type female Indicators POWER ON The unit is powered up LLB ON The unit is in local loopback mode...

Page 20: ...Technical Specifications FOM E1 T1 Ver 2 0 Power Wide Range Version 100 to 240 VAC 50 to 60 Hz 8 VA or 48 VDC 48 to 60 VDC 3W DC Version 24 VDC 4W Fuses FOM E1 T1 R 1A 250V and 50 mA 250V Environment...

Page 21: ...oducts in the front matter of this manual AC powered FOM E1 T1 units should be installed within 1 5m 5 ft of an easily accessible grounded AC outlet capable of furnishing the voltage in accordance wit...

Page 22: ...rack Use the K 33 drilling template included in this manual for mounting FOM E1 T1 on the wall 2 5 Setting the Jumpers and Switches Figure 2 1 illustrates the rear panel DIP switch Table 2 1 provides...

Page 23: ...Unbalanced E1 75 SW5 AIS When a major alarm is detected AIS is transmitted to the electrical or optical interface ON Transmit AIS OFF Do not transmit AIS 2 6 Connecting the Interfaces Figure 2 2 illu...

Page 24: ...e the protective earth terminals of this unit must be connected to the protective ground conductor of the mains AC or DC power cord If you are using an extension cord power cable make sure it is groun...

Page 25: ...apter 2 Installation and Setup FOM E1 T1 Ver 2 0 Connecting to Power 2 5 To connect DC power Refer to the DC power supply connection supplements for instructions how to wire the DC adapters and to the...

Page 26: ...Chapter 2 Installation and Setup Installation and Operation Manual 2 6 Connecting to Power FOM E1 T1 Ver 2 0...

Page 27: ...3 1 Turning FOM E1 T1 On FOM E1 T1 starts operating as soon as it is connected to the power source The PWR LED turns ON and remains lit as long as the unit is connected to the mains 3 2 Controls and...

Page 28: ...ck is active RLB Yellow ON A remote loopback is active ELEC LOSS Red ON E1 T1 electrical input is below G 703 level ELEC AIS Yellow ON E1 T1 electrical interface received All 1s string OPTICAL LOSS Re...

Page 29: ...s see Chapter 3 Alarm Relays FOM E1 T1 has dry contact alarm relays The following fault conditions trigger the major and minor alarm relays A major alarm is initiated when E1 T1 electrical input drops...

Page 30: ...d equipment outputs are not according to G 703 electrical levels Check that the output levels of equipment attached to FOM E1 T1 comply with G 703 electrical levels ELECTRICAL LOW LED is ON The SW3 SW...

Page 31: ...k To activate a local loopback 1 Set SW2 RLB LLB of the rear panel DIP switch to the OFF LLB position 2 Set SW1 of the rear panel DIP switch to the ON LOOP ENABLE position The TEST LOC indicator light...

Page 32: ...odems are not compatible Q Can I connect FOM E1 T1 with a balanced interface to FOM E1 T1 with an unbalanced interface A Yes Q What is the maximum distance between FOM E1 T1 and end equipment E1 link...

Page 33: ...of the 14 cards the rear panel see Figure 5 1 contains a male connector for the terminal block and a DB 25 connector A protection cover protects the terminal block connectors For the balanced E1 T1 i...

Page 34: ...s that protect the entire system against power failure due to a short circuit in one card see Figure 5 4 The ratings of the fuses are 1A 250V and 50 mA 250V The ASM MN 214 card cage can accept both AC...

Page 35: ...Supply Redundancy Optional power supply redundancy provides two separate power supplies that operate together and share the load of the whole card cage If either of the power supplies fails the other...

Page 36: ...anel of FOM E1 T1 R includes fiber optic connectors loopback initiation switch and LED indicators The front panel LEDs of the card version are functionality identical to those in the standalone device...

Page 37: ...g the Jumpers and Switches The FOM E1 T1 R internal jumpers and switches are described in Table 5 1 Figure 5 4 illustrates the FOM E1 T1 R PCB layout INPUT OUTPUT SW1 SW3 GROUNDED GROUNDED FLOATING FL...

Page 38: ...anced 75 ohm UNBAL CEPT E1 75 unbalanced Installing FOM E1 T1 R in the ASM MN 214 Card Cage To install FOM E1 T1 R into ASM MN 214 1 Install the ASM MN 214 card cage in the 19 inch rack 2 Insert the F...

Page 39: ...FOM E1 T1 Ver 2 0 Installing the FOM E1 T1 R Card 5 7 Fiber Optic The ST SC or FC fiber optic connectors are located on the front panel of the modem card Alarm Relay The ASM MN 214 DB 25 connector se...

Page 40: ...Chapter 5 FOM E1 T1 R Card Version Installation and Operation Manual 5 8 Installing the FOM E1 T1 R Card FOM E1 T1 Ver 2 0...

Page 41: ...ta TRING Transmit Data B wire FOM E1 T1 output 4 Receive Path RTIP Receive Data A wire FOM E1 T1 input 5 Receive Path RRING Receive Data B wire FOM E1 T1 input DB 9 Alarm Relay Connector The 9 pin D t...

Page 42: ...r on the rear panel of the ASM MN 214 modem rack serves as an alarm relay port Table A 3 lists the functions of the DB 25 pins Table A 3 ASM MN 214 DB 25 Pin Assignment Pin Contact Alarm Type 10 22 No...

Page 43: ...documentation Please complete and return this form by mail or by fax or send us an e mail with your comments Thank you for your assistance Manual Name FOM E1 T1 version 2 0 Publication Number 284 200...

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Page 45: ...Style spelling grammar references etc Appearance Other Please list the exact page numbers with the error s detail the errors you found information missing unclear or inadequately explained etc and att...

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