User's Manual - S Access GmbH
Contents
1. El Input El Output El Output El Input Far End FOM16 Near End FOM16 Fig 10c Optical Local Loopback 10 FOMI6 System Description FOM16 V1 4 200 El Input El Output El Output El Input Near End FOM16 Far End FOM16 Fig 10d Optical Remote Loopback 3 8Power supply 3 8 1 Input power DC 36 V to 72 V AC ripple up to 0 5 Vp p AC 220V 1096 50 Hz 1096 3 8 2 Power consumption 30 Watt 3 9Performance Monitoring option 3 9 1 FOM16 provides the performance monitoring parameters as follows 1 Near End Line Code Violation CV Errored Second ES 2 Near End Path Code Violation CV Errored Second ES Severely Errored Second SES Unavailable Second UAS 3 Far End Line Code Violation CV Errored Second ES 4 Far End Path Code Violation CV Errored Second ES 11 FOM16 System Description FOM16 V1 4 20040701 Severely Errored Second SES Unavailable Second UAS 3 9 2 Parameter Descriptions 3 9 3 3 9 4 1 CV HDB3 line coding violation or path coding violation 2 ES An ES is a second during which at least one CV occurred 3 SES A SES is a second with X or more CV Candidate different values of X to correspond to BER thresholds respectively The values for X are specified in Table 4 The number of CVs within a second constitutes a SES can be configured 4 UAS UAS is a count of one second intervals for which the line or pat2. 1x10 BER Long haul Output power 0 5 dBm 0 1310 nm Minimum receive sensitivity 36 dBm 10 BER System Gain gt 30 dB at 1x10 BER Protection type 1 1 automatic switching 3 4 Alarm and indicators 3 4 1 3 42 3 4 3 The system monitors all alarms such as loss of signals optical signal loss remote alarm etc in real time The system also provide the following four alarm relay contacts MJA Audible Major Alarm MJV Visible Major Alarm MNA Audible Minor Alarm MNV Visible Minor Alarm Shown as Table 1 Table 3 FOM16 activates the LEDs and LCM on the front panel when system or signal failures are detected Shown as Table 1 Table 3 FOM16 also active LEDs and LCM on the front panel when alarm and status indications for local and remote monitoring happen Channel LED 1 16 LED Action El Channel 1 16 El out of service Off El in service without LOS Green On El in service with LOS Red On El in service with LLB or RLB Green Blinking Table 1 LEDs about E1 Channel Operations FOMI6 System Description FOM16 V1 4 200 Channel LED LED Action Optical Channel Working or Protection Out of service Off Channel in service without LOS Green On Channel in service with LOS Red On Channel in standby status without LOS Yellow On Channel in standby status with LOS Red On Channel in service with LLB or RLB Green Blinking Table 2 LEDs abou
3. the E1 12 FOMI6 System Description FOM16 V1 4 200 facilities and the far end performance message and management are submitted through the DCC overhead channel of 16 3 11 Operation environment Ambient temperature 0 C to 60 C Relatively humidity 5 to 95 Non condensing 3 12 Reliability MTBF Mean Time between Failure 47 000 hours MTTR Mean Time to Repair 5 hours 3 13 EMI The FOMI6 complies with the specifications of the Class A of CISPR 22 and the Class A of subpart B of Part 15 of the FCC Rule of U S A 213 FOM16 System Description FOM16 V1 4 20040701 14
4. FOM16 User s Manual VER 1 4 FOM16 User s Manual 1 System Description 2 Installation amp Operation Manual FOMI6 System Description FOM16 V1 4 20040701 Table of content INERODUGTTON Se Sage 1 2 SYSTEM APPLICATION iernii utu e ra UG YN DS Eny 3 3 SPECIFICATIONS AND CHARACTERISTICS eee ecce eene seen eese tones etta asse 4 3 1 MECHANICAL SPECIFICATIONS cerci nene then teen LYN eee iene 4 3 2 INTERFACE CONNECTOR opipa que oci i E b ibi n or bs ce tti id 4 3 3 INTEREACE SPECIFICATIONS cp iii nails pte e s 4 3 4 ALARM AND INDICATORS etn eed oe i iet etie dan FU A tai 8 3 5 AUTOMATIC PROTECTION SWITCHING eiecit re tete e ae 9 3 6 SYSTEM PERFORMANCE en GYD RR GR ERE OE HE EUER d e 9 3 7 LOOP TBACKS ud N pesetas eie ata ete GG ase 10 3 8 POWER SUPPLY edere eH REO DD ED FE HE OR PI EE OU Rr eR EE CHR 11 3 9 PERFORMANCE MONITORING OPTION Ne 11 3 10 NETMANAGEMENESYSTEM islet dat 12 3 11 OPERATION ENVIRONMENT ne et tede tet oe ER RE RUE RERUM Uer a ree ipee Regen 13 3 12 RELIABLY ao dw ee ete ee n Desi og e Ha e o e Mase re qe iei edet 13 3 13 EMI seme mitem tutte dut meet 13 4 FOMI6 System Description FOM16 V1 4 200 Introduction FOMI6 M universal fiber multiplexer is a transmission equipment which can multiplex 4 8 16 2 048Mb s El tributaries over a si
5. J 45 female connector 3 3Interface specifications 3 3 1 System Capacity Four eight or sixteen 2 048Mb s El 3 3 2 El signal interface 1 Bit Rate 2 048Mb s 50ppm 2 Line code HDB3 3 Pulse Shape ITU T G 703 shown as Fig 6 4 Impedance 120 O 596 symmetrical pair FOMI6 System Description FOM16 V1 4 200 100 50 5 Nominal pulse width 244ns 6 Ratio of the amplitudes of positive and negative pulse at the center of the pulse interval 0 95 to 1 05 7 Ratio of the width of positive and negative pulses at the nominal half amplitude 0 95 to 1 05 8 The allowable attenuation range of an El input signal 0 12 dB 1024KHz i e E1 copper 0 65mm can transmit up to 400 meters 9 El jitter characteristics G 742 and G 823 10 Minimum return loss for El input 51 102KHz gt 12dB 102 2048KHz gt 18dB 2048 3072KHz gt 14dB 11 The 2 048Mbps input output interface offers compensation circuit 12 Provision to input output port with connection to the earth at the outer connector of the screen 0 244 244 Fig 6 Mask of the pulse at the E1 interface 3 3 3 El jitter requirements ITU T G 823 amp G 742 1 Jitter generation FOM16 System Description FOM16 V1 4 20040701 The jitter of the E1 output signal in the absence of input jitter shall not exceed the following limits in both bands simultaneously The characteristics weighting functions of Band 1 and Ba
6. face The MUDEM multiplexes demultiplexes low speed tributaries into a high speed signal FOM16 is a high quality reliable and robust digital signal transmission equipment which is suitable for inter office and access network applications FOM16 system applications are as follows Connections between mobiles switch centers and base stations in cellular phone networks Connections between the COT Central Office Terminal and RT Remote Terminal of DLC Digital Loop Carrier systems Trunk connections between digital switches Optical transmission for LAN WAN applications Transmission media for ATM networks CO Switch Mobile phone switch Mobile phone base station Fig 3 System Applications FOMI6 System Description FOM16 V1 4 20040701 3 Specifications and Characteristics 3 1 Mechanical Specifications Shelf size 45mm Height x 436mm Width x 330mm Depth Fig 4 FOMI6 Front View inS MJA in9 MJV AC IN DC IN p ooo000 MNA DANGER e 9890 9 00290 pins NY CHS CHS CH 13 CH 16 E ATT b osa o 0 sme O cl IM ON OUT IN ON OUT IN CHI CH4 CH9 CH 12 C NMS Fig 5 FOMI6 Rear View 3 2 Interface connector El interface DB 25 female connector Optical Interface FC PC type single mode Alarm interface DB 9 female connector Power interface DC power terminal or AC Plug CID RS 232 DB 9 male connector NMS RS 232 DB 9 male connector LAN R
7. h is unavailable The line or path is said to become unavailable at the onset of 10 consecutive SESs tee 1x10 1x10 1x10 1 5x107 Channel Optical X 68736 X 687 X 68 X 10 E1Channel X 2048 2 Table 4 X values about Threshold Setting Threshold values of registers current 15 minutes current hour and current day for El parameters CV ES SES and UAS are settable A threshold alarm is generated when threshold violation occurs Performance Data Storage FOMI6 provides a sufficient size of internal memory to store the current and historical performance data The historical performance data includes 15 minuts interval ES SES and UAS of the latest 24 hours as well as total 24 hour interval ES SES and UAS of the latest 7 days that derives from the errored messages on incoming and outgoing digital paths 3 10 Network Management System 3 10 1 FOMI6 reports the alarm automatically to a CID and controller of RS 232 V 24 interface Operation administration maintenance and provision OAM amp P including querying and monitoring and loopbacks can also be accessible through RS 232 interface locally and or remotely 3 10 2 Network management protocol provides SNMP About the Management Information Base MIB version and contents of SNMP agent please refer FOMI6 Monitoring Software Operation Description 3 10 3 FOMI6 can identify the time of various errors or events which happened to
8. nd 2 are shown as Fig 7 Band 1 0 25 unit intervals peak to peak Band 2 0 05 unit intervals peak to peak with a probability of 99 9 during a measurement period of 10 seconds 2 Jitter tolerance The El signal interface should accommodate input jitter of a least magnitude shown as Fig 8 3 Jitter transfer For E1 interface the result of jitter transfer performance should be under the curve shown as Fig 9 Weighting dB Slop 29dB Decade 20Hz Lesa Band let 100 kHz 18K Hz Band 2 uu 100 kHz Frequency Log Scale Fig 7 Frequency characteristic weighting functions FOMI6 System Description FOM16 V1 4 200 NIS Signal Input Jitter Amplitude PK to PK U L gt R F1 F2 F3 F4 Jitter Frequency Peak to peak Pseudo rand amplitude Frequency om Digital Hz nit interval si Rate u erv test signal kbit s DER Q 151 0h Fig 8 Input jitter tolerance at E1 interface 0 5dB WW UG 20dB Decade Acceptable Range 19 5dB Fig 9 E1 Jitter Transfer Performance FOM16 System Description FOM16 V1 4 20040701 3 3 4 Optical signal interface ITU T G 981 Optical source MLM 1310 nm type LD Optical wavelength range 1260 nm to 1360 nm Optical connector FC PC type Line coding format Scrambled NRZ Short haul Output power 7 15 dBm 1310 nm Minimum receive sensitivity 34 dBm 10 1 BER System Gain gt 19 dB at
9. ngle mode optical fiber for telephone and data services The system features are E1 G 703 channel interface Redundant fiber 1 1 Option protection Link distance up to 50 Km Working temperature up to 60 C for outdoor applications Low Bit Error Rate BER lt 10 19 Software configuration Desk top or mountable on standard 19 23 rack conforming to ETS recommendation 300119 Easy to configure and maintain Access maintenance functions locally and remotely Performance monitoring and data storage Compatible with Gregorian calendar dates and 2000 A D Power supply AC and or DC Available synchronization to external clock option Linear add drop and ring topology option Network management option FOMI6 System Description FOM16 V1 4 20040701 4 8 16 x El 4 8 16 E1 Signal 4 8 16 x El Fig 1 FOMI6 with 4 8 16 El interfaces MUX dii El El Line DEMUX BE Transceiver Interface CODER DECODER Transformer Fig 2 FOM16 system block diagram DE FOMI6 System Description FOM16 V1 4 200 2 System Application FOM16 consists of high speed interface MUDEM multiplex demultiplex and low speed interface The low speed interface provides electrical interfaces for transmit receive 4 8 or 16 El signals and the high speed interface uses a laser diode LD transmitter and a PINFET receiver to provide optical inter
10. t Fiber Optical Operations System LED LED Action System Status System Power On PWR LED Green On Alarm Cut Off ACO LED Green On RLB or LLB ABN LED Green On Optical Working and Protection channels are in service with LOS or LOF MED Either of Optical Working and Protection channels are in service with LOS or LOF MN Any El channel is in service with LOS MJ LED Red On Alarms happen in Near End NE LED Yellow On Alarms happen in Far End FE LED Yellow On Table 3 LEDs about System Operations 3 5 Automatic protection switching The system can offer optical 1 1 automatic protection switching when optical signal fails The mechanism of protection switching prevents unwanted oscillation between service and protection facilities and the switching time is less than 60 ms 3 6System Performance FOMI6 provides high transmission performance less than 1 error per 10 bits for each El digital signal through the system ITU T G 826 9 FOM16 System Description FOM16 V1 4 20040701 3 7Loopbacks Shown as Fig 10a Fig 10d FOM16 provides local and remote loopback tests by CID or via LCM and push bottoms These functions are used to test the integrity and connectivity of E1 and optical signals El Input El Output El Output El Input Far End FOM16 Fig 10a E1 Local Loopback El Input El Output El Output El Input Near End FOM16 Fig 10b E1 Remote Loopback
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