User Manual
Contents
1. N 440 mm K 125 mm 44 mm a 2 31 8 mm ERA LE gt 0 E X o E 4e la arg res ALA a lt 465mm gt Fig 4 Mechanical dimension 4 2 Electrical 4 2 1 Power connection Plug in power unit is installed inside the power chamber Two types of power units are available 220V ac or 48V dc When AC unit is installed the power inlet a fuse and a switch are integrated with the unit as shown in the diagram below inlet IE IN L fuse Fig 5 AC power module Use the power cord supplied with the STM 1 O E Converters Plug in the power cord to the ac power inlet at the back ofthe power chamber Be sure to use a wall outlet with correct voltage and a secure earth connection When 48V DC power is selected a cover plate is fixed on the chamber by screws 48V DC power connector is on the right side of the power chamber Connect to 48V power source using a pair of wires about 1mm in diameter to the power in connector Remove about 10mm of the protective insulator from the wire end Prepare the wire end with solder Push inward the yellow release lever on top of the connector with a screw driver plug the prepared wire end well into the hole then release the push 4 2 2 STM 1 electrical connections There are BNC sockets for 75Qcoaxial STM 1 electrical interface for A or B converter 4 STM 1 O E Converter Operation Manual 4 22. LED Color Meaning when lit Note AA A A E TT 5V green 5V Power switch on and OK O LOS red Loss of optical signal B O OOL yellow Unlock alarm of synchronization in optical signal converters E LOS red Loss of electrical signal Arme E OOL yellow Unlock alarm of synchronization in electrical signal There are 8 DIP switches in the front panel They are used to set working mode of converters Each of A and B two converters have 4 DIP switches The following tables lists 4 DIP switches description The A and B converters are same Table 2 4 DIP switches description Working mode 4 DIP states Description DIP 1 DIP 2 DIP 3 DIP 4 1 off on on on Rx Tx remote loop in optical 2 on off on on Rx Tx local loop in optical 3 on on off on Rx Tx remote loop in electrical 4 on on on off Rx Tx local loop in electrical 5 on on on on Normal O E converter NOTE 1 The on is down off is up for each DIP 2 The A and B converters are same Table 3 Working modes description Working modes Optical STM 1 Electrical STM 1 Loop test state model mo E mode2 mode4 Normal O E converter mode5 NOTE The A and B converters are same 2 STM 1 O E Converter Operation Manual 3 2 Rear panel arrangement There are STM 1 optical interfaces STM 1 electrical interfaces power switch and power in port in Rear panel The
3. 3 STM 1 fiber connection Use SC or FC type connectors to connect the STM 1 O E Converters to the transmission cable Pay attention to the input and output relationship Do not bend fiber to sharp angles to prevent damage Do not look directly into the fiber end or the Tx connector socket for extended time it may be harmful to the eyes 5 Operation and maintenance When all the connections are down switch on the Converters Observe all the alarm LED s for any possible installation errors Check the output optical power using an optical power meter The reading should be within specification Measure the optical power at the receiver end Make sure that the power level is between the maximum allowable input power and sensitivity given in the specification It is preferred to leave a margin of few dB s for stable operation 6 Specifications 6 1 Capacity A and Btwo STM 1 O E converters 6 2 STM 1 Optical interface ITU T G 957 STM 1 Line rate 155520 kbps Line code Scrambled NRZ Wavelength 1 31 u m typical 1 55 u m optional Connector SC or FC Optical S1 1 typical L1 1 optional 6 3 STM 1 electrical interface ITU T G 703 Bit rate 155520 kbps 20ppm Line code CMI Impedance 7590 unbalanced STM 1 O E Converter Operation Manual 5 6 4 6 5 6 6 Power DC type 48V 36V to 60V AC type 220V 165V 265V Power consumption lt 3W Working environment Temperature 0 50 C Humidity
4. 55um laser sources may be selected Exterior power supply all the functional blocks are integrated on a single PC board which makes the modem compact and reliable 220 V AC or 48 V DC power options are available by selecting an appropriate plug in power unit The two converters enclosure is a standard 19 wide 1U metal box suitable for rack mounting or as a desk top unit 2 Typical application The STM 1 O E Converter provides two converters between electrical interface and optical interface of STM 1 155 520Mbit s signal of SDH or ATM network The typical application is given below STM 1 0 E STM 1 0 E Converter Converter Electrical Optical Optical Fiber Optical Electrical Interface Interface Interface Interface Fig 1 Typical application example SDH or ATM Network 3 Panel arrangement 3 1 Front panel arrangement The front panel of STM 1 O E Converter is as shown below STM 1 O E Converter Operation Manual 1 A B POWER SIGNAL HN 5V LOS OOL LOS OOL 70 O 0 0 0 O EO MODE DIP SWITCH Fig 2 Front panel AN 5V LOS OOL LOS 00L O O O 0 0 O E0 POWER SIGNAL MODE DIP SWITCH There are green red and yellow LEDs on the front panel of the STM 1 O E Converter The following table lists meaning of all the LEDs and possible causes The A and B converters are same Table 1 LED descriptions
5. STM 1 O E Converter User Manual Revision 1 0 2004 9 1 2 3 4 TYPICAL APPLICATION esensial 3 1 FRONT PANEL ARRANGEMENT cssssssscccececssssnsccccececsesssceecececsessseaecececsensnauaecececs 1 3 2 REAR PANEL ARRANGEMENT eta en o EEO EEEE EE E 3 3 3 LOOP BAGS wi sen A a en a ee 3 4 1 MECHANICAL 4 4 2 ELECTRICAL ra tores ido oro db 4 ALL Bower Connection ash Bahamas a ca 4 4 2 2 STM l electrical CONNEC IONS ooonononoconononononononononononononononononononononononononenicicanos 4 42 3 SLM fiber Connection T 3 OPERATION AND MAINTENANCE seeeseseeeseeeserereeeeeeeeeeeeeeeeeeeeeeeeeeceeeeeeeeeeeeeeeeeeesese D 6 2 STM LOPTICALINTEREACE eso 5 re tr es a a a a e toncbseges 5 6 3 6 4 POWER E e TE AEE EAE E 6 6 5 WORKING ENVIRONMENT sese eee 6 6 6 DIMENSION 2 2 2 2 A A eee ee 6 Note Every effort is made to ensure that material printed in this manual is accurate until release However we reserve the right to make improvements without prior notice STM 1 O E Converter Operation Manual 1 Introduction The STM 1 O E Converter is designed to provide A and B two converters between electrical interface and optical interface of STM 1 signal The converters features compactness light weight low power consumption and high reliability The STM 1 O E Converter operates on 1 31um lasers with a typical transmission distance of 40 km over single mode optical fibers For longer hops 1
6. lt 90 non condensing Dimension Width 440mm Height 44mm Deep 125mm STM 1 O E Converter Operation Manual
7. re are two types of The STM 1 O E Converter 220V AC and 48V DC according to the power supply Both of their rear panels show in following figures The rear panel of STM 1 O E Converter is shown below IN OUT EE IN OUT L ON OUT IN O OUT IN WN ele 48V Hi J i J S OPTICAL BNC SOCKETS OPTICAL 48V a BNC SOCKETS x POWER IN 150 SOCKETS 75Q SOCKETS SWITCH a 48V DC power supply panel N S D a e Q N OPTICAL BNC SOCKETS OPTICAL 220V 220V BNC SOCKETS 750 SOCKETS 750 SOCKETS SWITCH POWER IN b 220V AC power supply panel Fig 3 Rear panel For A or B STM 1 O E Converter the STM 1 electrical interfaces are BNC sockets IN is incoming STM 1 electrical signal and OUT is outgoing STM 1 electrical signal And the STM 1 optical interfaces are SC type or FC type sockets pay attention to the input and output relationship Do not bend fiber to sharp angles to prevent damage Do not look directly into the fiber end or the Tx connector socket for extended time it may be harmful to the eyes 3 3 Loop backs The STM 1 O E Converters support panel DIPs switch control of loop backs to allow for installation and maintenance checks STM 1 O E Converter Operation Manual 3 4 Installation 4 1 Mechanical The dimension of the STM 1 O E Converters is shown below
Download Pdf Manuals
Related Search