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        OCU 45 User Manual
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1.   Positive side of DC power source  usually ground             Negative side of DC power source  usually  48V        Frame Ground             ilk     48V    0 2A            Figure 2 1  DC Power Connector    The following UL requirements must be met during installation of the  OCU 45     1  The unit must be connected to a reliably grounded  48 VDC source  which is electrically isolated from the AC source     2  The branch circuit overcurrent protection should be a fuse or circuit  breaker rated  48V  10A     3  The unit should be installed in accordance with the requirements of  NEC NFPA 70     4  A readily accessible disconnect device that is suitably approved and  rated should be incorporated in the fixed wiring     18 OCU 45 User Manual 61200664L1 1C    Chapter 2  Installation    OPTICAL INTERFACE PORT    The OCU 45 optical interface port consists of a single mode  long haul or  multi mode  short haul transceiver module comprised of a transmitter and  receiver  The optical interface port supports angled or straight SC or ST type  optical connectors and operates in the 1280 nm to 1335 nm wavelength range   1310 nm nominal   The total output power is 8 mW with a 50 mm aperture at  10 cm distance  as defined by IEC  The optical interface uses two fibers  one for  each direction of transmission  The long range optical budget for the optical  transceiver  single mode  is 28 dB  calculated as follows      5 dBm  Worst case optical receiver sensitivity    10dBm to  34 dBm    Worst
2.   specifications 27  Optical LED 14   Optical LOS  problems 24    P    Power Connector  pinout 31  Power LED 14   Power On   Self Check Failure 25  Power  problems 23   Powering the Unit 17    R  Rear Panel 15    S    Shipping contents 17  Specifications 27   Specifications  Agency Approvals 30  Specifications  Alarms 30  Specifications  Configuration 29  Specifications  Diagnostics 29  Specifications  DS3 interface 28  Specifications  E3 interface 29  Specifications  Optical interface 27  Specifications  STS 1 interface 29  STS 1 Interface  Specifications 29    T    Test LED 14  Troubleshooting 23    OCU 45 User Manual 33    Index    U    UL requirements 18  Unit overview 13    61200664L1 1C    OCU 45 User Manual    34    
3.  31  Power Connector 4 eo tt once e edes 3l  Ahma Relay esT nta rats x nep RW staves Dead  31  IN CX ye icc  bes EE 33  Figures   Figure 1 1  OCU 45 Front Panel         0 2 0    eee eee eee 14  Figure 1 2  OCU 45 Rear Panel    15  Figure 2 1  DC Power Connector          0 0 00 eee eee eee nee 18  Figure 2 2  OCU 45 Front Panel         0 0 0    eee eee ee eee 20  Figure 2 3  Electrical Loopback           00    cece eee eee eee 21  Figure 2 4  Optical Loopback             0    cee eee eee eee 21  Tables   Table 2 1  DC Connector Symbol Definitions                      18    12 OCU 45 User Manual 61200664L1 1C    Chapter 1 General    UNIT OVERVIEW    The ADTRAN OCU 45 offers transport of DS3 E3 STS 1 services over  fiber up to distances of 40 km in the single mode version and 2 km in the  multi mode version  Measuring only one rack unit high  the OCU 45 can be  used stand alone  wallmounted  or mounted in 19  or 23 inch racks using an  optional mounting tray  This compact device gives NSPs a convenient way  to extend DS3 E3 STS 1 services from their point of presence to their cus   tomer and provides Enterprise users a powerful tool for extending DS3 E3   STS 1 services over fiber in a campus environment     Configuration of the OCU 45 is accomplished through two switches on the  front of the unit which configure the metallic interface to DS3  E3  or STS 1  and set the metallic line length to short or long  The OCU 45 has both nor   mally open and normally closed alarm relay con
4.  C  32  F to 122  F   Storage  20  C to 70   C   4  F to 158  F   Relative Humidity Up to 95 percent  non condensing  PHYSICAL  Dimensions 1 7 inches H x 6 7 inches W x 9 1 inches D  Weight 2 0 pounds  Power  48 VDC  5 Watts    30 OCU 45 User Manual 61200664L1 1C    Appendix A Connector Pin Definitions          POWER CONNECTOR  Pin Description   1   48 RTN   2   48   3 Chassis Ground    ALARM RELAY          Pin Description   1 Normally Closed  2 Normally Open  3 Common   4 Ground    61200664L1 1C OCU 45 User Manual 31    Appendix A  Connector Pin Definitions    32 OCU 45 User Manual 61200664L1 1C    Index    A    Alarm relay conditions  problems 24  Alarm relay connector  pinout 31    C    Connector  DC Power Supply 15  18  Connector  electrical interface 15  Connector  optical interface 15    D    DC Power Supply connector 15  18  DC Power Supply  Connecting 17  DS3 Interface  Specifications 28    E    E3 Interface  Specifications 29  Electric alarm  problems 23  Electric LED 14   Electric LOS  problems 23  Electrical interface connector 15  Environmental specifications 30  External alarm contacts 15    F  Front Panel 14    Installation 17  Interface LED 14    L    LED  Electric 14  LED  Interface 14  LED  Line Length 14  LED  Optical 14  LED  Power 14   Line Length LED 14  Line  4 wire 29    61200664L1 1C    M  Maintenance 25  O    Optical alarm  problems 24  Optical interface connector 15  Optical Interface  Multimode 28  Optical Interface  Singlemode 27  Optical interface
5.  Standard ST receptacle using two fibers   one for each direction of transmission    Transmitter ELED   Operating   Wavelength 1910 np   Cable Type 62 5 125 um multi mode    Transmission Code Manchester  Distance Up to 2 km  Transmitter Output  16 dBm   Receiver Sensitivity  14 dBm to  31 dBm       NOTE The single mode optical interface complies with IEC 60825 1  and FDA 21CFR 1040 10 and 1040 11              DS3 INTERFACE    Line Interface Dual 75 Ohm BNC female connectors  Line Rate 44 736 Mbps  Line Code B3ZS    Framing Format M13 and C Bit Parity    Line Buildout 0 to 225 feet  short   226 to 450 feet  long     28 OCU 45 User Manual 61200664L1 1C    Chapter 4  Specifications    E3 INTERFACE    Line Interface Dual 75 Ohm BNC female connectors  Line Rate 34 368 Mbps  Line Code HDB3    STS 1 INTERFACE    Line Interface Dual 75 Ohm BNC female connectors  Line Rate 51 84 Mbps  Line Code B3ZS    Framing Format STS 1    Line Buildout 0 to 225 feet  short   226 to 450 feet  long     CONFIGURATION    Metallic Interface     DS3  E3  STS 1    Metallic Line    Buildout Short  Long    DIAGNOSTICS    Built in selftest  Metallic loopback  Optical loopback    61200664L1 1C OCU 45 User Manual 29    Chapter 4  Specifications    ALARMS  External alarm contacts for critical and non critical alarms  Normally open and normally closed pinouts  Front panel Reset switch    AGENCY APPROVALS  Emissions Part 15  Class A  Bellcore NEBS  Level 3  Safety UL 1950  CUL  ENVIRONMENT  Operating 0  C to 50 
6.  There is a remote risk of shock from lightning     3  Do not use the telephone to report a gas leak in the vicinity of  the leak     4  Useonly the power cord  power supply  and or batteries  indicated in the manual  Do not dispose of batteries in a fire   They may explode  Check with local codes for special disposal  instructions     Save These Important Safety Instructions    Federal Communications Commission Radio  Frequency Interference Statement    This equipment has been tested and found to comply with the limits  for a Class A digital device  pursuant to Part 15 of the FCC Rules   These limits are designed to provide reasonable protection against  harmful interference when the equipment is operated in a commercial  environment  This equipment generates  uses  and can radiate radio  frequency energy and  if not installed and used in accordance with the  instruction manual  may cause harmful interference to radio  frequencies  Operation of this equipment in a residential area is likely  to cause harmful interference in which case the user will be required  to correct the interference at his own expense        Shielded cables must be used with this unit to ensure  compliance with Class A FCC limits     NOTE          Changes or modifications to this unit not  M expressly approved by the party responsible for  Y y  W ARNINC compliance could void the user s authority to    operate the equipment           Industry Canada Compliance Information    Notice  The Industry Canada 
7.  case optical transmit power    Calculations      34   5  dB   29 dB   1 dB  optical path penalty    28 dB    For the multi mode optical transceiver  the short range optical budget is  14 dB and can be calculated using the following equations      16 dBm  Worst case optical receiver sensitivity    14 dBm to  31 dBm    Worst case optical transmit power    Calculations      31   16  dB   15 dB   1 dB  optical path penalty    14 dB    The optical interface complies with IEC Class 1 laser safety requirements   under normal operating conditions   The OCU 45 contains an integrated  automatic shutdown circuit that disables the laser when it detects transmitter  failures giving it an FDA Class 1 laser safety rating  The FITS rating of the  internal shutdown circuit 1s less than 500 FITS     A removable process plug to cover the optical interface is provided with the  OCU 45 unit     61200664L1 1C OCU 45 User Manual 19    Chapter 2  Installation    LED AND SWITCH DESCRIPTIONS    The OCU 45 has switches to configure the desired electrical interface   electrical line length  and loopback tests  The LEDs indicate the status of the  power supply  the electrical interface line type and length  loopback  diagnostics  and electrical and optical interface status  A full description of  the switches and LEDs follows Figure 2 2        W L E    POWER RESET       Figure 2 2  OCU 45 Front Panel    Power Supply    The Power LED is active when the unit is on and receiving full power     Interface Sw
8.  o e          Figure 1 1  OCU 45 Front Panel    14 OCU 45 User Manual 61200664L1 1C    Chapter 1  General    REAR PANEL FEATURES    The OCU 45 rear panel provides electrical and optical interface connections   normally open and normally closed alarm relay contacts  and a 48V power  connection  see Figure 1 2      The electrical interface connector is provided using dual 75 Ohm BNC female  connectors  one for transmit and one for receive   The optical interface of the  OCU 45 consists of a standard SC or ST receptacle using two fibers  one for  each direction of transmission     External alarm contacts for critical and non critical alarms are provided on the  rear panel of the OCU 45 using a standard 4 pin terminal block containing nor   mally open  normally closed  common  and ground connections  The DC  power supply connector is a standard 3 pin terminal block containing  48V   RETURN  and GROUND  For more information on the above connections   please refer to Installation on page 17             USE COPPER Laser Radiation Avoid Exposure to Beam  CONDUCTORS ONLY Laser Class 1 Product Complies with 21 CFR ELECTRICAL  48V  0 2A ALM RELAY OPTICAL  E  looo B E o Q  Tx OUT Rx IN Tx OUT Rx IN             Figure 1 2  OCU 45 Rear Panel    61200664L1 1C OCU 45 User Manual 15    Chapter 1  General    16 OCU 45 User Manual 61200664L1 1C    Chapter 2 Installation    UNPACK AND INSPECT THE UNIT    Carefully inspect the OCU 45 for any damage that may have occurred in  shipment  If damage i
9. E AND  EXCLUSIVE REMEDY OF THE CUSTOMER AND THE  EXCLUSIVE LIABILITY OF ADTRAN AND IS IN LIEU OF ANY  AND ALL OTHER WARRANTIES  EXPRESSED OR IMPLIED    ADTRAN SPECIFICALLY DISCLAIMS ALL OTHER    WARRANTIES  INCLUDING  WITHOUT LIMITATION   ALL  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A  PARTICULAR PURPOSE  SOME STATES DO NOT ALLOW THE  EXCLUSION OF IMPLIED WARRANTIES  SO THIS EXCLUSION  MAY NOT APPLY TO CUSTOMER     In no event will ADTRAN or its suppliers be liable to the Customer for  any incidental  special  punitive  exemplary or consequential damages  experienced by either the Customer or a third party  including  but not  limited to  loss of data or information  loss of profits  or loss of use    ADTRAN is not liable for damages for any cause whatsoever  whether  based in contract  tort  or otherwise  in excess of the amount paid for  the item  Some states do not allow the limitation or exclusion of  liability for incidental or consequential damages  so the above  limitation or exclusion may not apply to the Customer     Customer Service  Product Support  Information  and Training    ADTRAN will repair and return this product if within 10 years from  the date of shipment the product does not meet its published  specification or the product fails while in service     A return material authorization  RMA  is required prior to returning  equipment to ADTRAN  For service  RMA requests  training  or  more information  use the contact information given below     Repair a
10. OCU 45 User Manual    Part Number 1200664L 1 2 3 4  Document Number 61200664L 1 1C    61200664L1 1C  January 2005    Trademarks    Any brand names and product names included in this manual are  trademarks  registered trademarks  or trade names of their respective  holders     To the Holder of the Manual    The contents of this manual are current as of the date of publication   ADTRAN reserves the right to change the contents without prior  notice     In no event will ADTRAN be liable for any special  incidental  or  consequential damages or for commercial losses even if ADTRAN  has been advised thereof as a result of issue of this publication     901 Explorer Boulevard  P O  Box 140000  Huntsville  AL 35814 4000  Phone   256  963 8000  Copyright    2005  Inc   All Rights Reserved   Printed in U S A        NOTE Notes provide additional useful information           Cautions signify information that could prevent service    CAUTION interruption        4  Warnings provide information that could prevent  x  NING damage to the equipment or endangerment to  WA     human life           Safety Instructions    When using your telephone equipment  please follow these basic safety  precautions to reduce the risk of fire  electrical shock  or personal  injury     1  Do not use this product near water  such as a bathtub  wash  bowl  kitchen sink  laundry tub  in a wet basement  or near a  swimming pool     2  Avoid using a telephone  other than a cordless type  during an  electrical storm 
11. anel Features  i Lec er i   15  Figure 1 2  OCU 45 Rear Panel      0 2 0    00  c eee eee eee 15  Chapter 2 Installation             ccc cece cece cee n nnn 17  Unpack and Inspect the Unit    0 0 0 0    0 anaa 17  Powering the Unlt  as wee 17  Table 2 1  DC Connector Symbol Definitions                     18  Figure 2 1  DC Power Connector             0 00 cee eee eens 18  Optical Interface Port   ron ainan eee eens 19  LED and Switch Descriptions                 000s eee eee eee eee 20  Figure 2 2  OCU 45 Front Panel            2 0    cee eee eee 20  Figure 2 3  Electrical Loopback            0    0c cee eee ee ee ene 21  Figure 2 4  Optical Loopback               000 cece eee rr rr ra 21  Chapter 3 Troubleshooting and Maintenance                  23  Troubleshooting  mii ts 23  Maintenance css dp REPRE a a lees  25  Chapter 4 Specifications              cece ee eee eee eee eee 27  Optical Interface   Single mode                0 0 0 cece eee eee 2   Optical Interface   Multi mode          00 0    eee eee ee eee 28  IDS3 Interface  gt  aise dsc Gir ts he cae Sea 28  ES  Interact e tot i s ees 29  STS I IHiterfaee  ois e a Se ERAT Heute eee e 29  Conf guration  oer REAGIEREN 29  Diagnoslcs e eS 29  PAESE TE LOO MP 30  Agency Approvals         sssssseseee ete rr trea 30  Environment  i eme URLs SI uon oa any 30  Physical ies 8226s eee Ree SL NU Eus Hen Sees 30    61200664L1 1C OCU 45 User Manual    Table of Contents    Appendix A Connector Pin Definitions                      
12. em intact  check the DS3 STS 1 device on the other  end of the circuit     Electric Alarm  Condition  ELECTRIC ALARM LED is illuminated     1  Line coding violations  LCVs  are being received on the electrical  interface  Check the electrical interface configuration  and verify the  current setting is correct     2  Ifthe current electrical interface configuration setting is correct  check  the DS3 STS 1 device connected to the OCU 45     61200664L1 1C OCU 45 User Manual 23    Chapter 3  Troubleshooting and Maintenance    3  Alternately  an electric alarm could mean that all 1s are being received  on the electrical interface  indicating an AIS alarm being transmitted  from the DS3 STS 1 device     Optical LOS  Condition  OPTICAL LOS LED is illuminated     1  Verify that the fiber is fully seated in the optical connector interface of  the OCU 45 unit     Optical Alarm  Condition  OPTICAL ALARM LED is illuminated     Line coding violations are being received from the far end OCU 45     2  Alternately  an optical alarm can indicate that all 1s are being received  on the optical interface from the far end device     3  Verify that the far end OCU 45 is functioning properly     Alarm Relay Conditions  Condition  ALARM RELAYS are indicating an active alarm     1  The unit is currently experiencing an OPTICAL or ELECTRICAL loss of  signal     2  The electrical interface is currently not transmitting data     The electrical interface setting is not configured properly  1 e   the  int
13. erface setting and the data being received are different data rates      24 OCU 45 User Manual 61200664L1 1C    Chapter 3  Troubleshooting and Maintenance    Power On   Self Check Failure  Condition  Only the POWER LED is illuminated        Theunit has failed its internal self check  Return the unit to the ADTRAN  Customer and Product Service  CAPS  Department as instructed in  Customer Service  Product Support Information  and Training on page 8     MAINTENANCE    The OCU 45 requires no routine maintenance  No repairs should be performed  by the customer  Repair services can be obtained by returning the unit to the  ADTRAN Customer and Product Service  CAPS  department as instructed in  Customer Service  Product Support Information  and Training on page 8     61200664L1 1C OCU 45 User Manual 25    Chapter 3  Troubleshooting and Maintenance    26 OCU 45 User Manual    61200664L1 1C    Chapter4 Specifications    OPTICAL INTERFACE   SINGLE MODE    Connector Standard SC receptacle using two fibers   one for each direction of transmission    Transmitter Class 1 Laser   Operating   Wavelength 1518 nm   Cable Type 9 125 um single mode    Transmission Code Manchester  Distance Up to 40 km  Transmitter Output  5 dBm   Receiver Sensitivity  10 dBm to  34 dBm       NOTE The single mode optical interface complies with IEC 60825 1  and FDA 21CFR 1040 10 and 1040 11              61200664L1 1C OCU 45 User Manual 27    Chapter 4  Specifications    OPTICAL INTERFACE   MULTI MODE    Connector
14. itch and LEDs   The INTERFACE LEDs reflect the electrical interface switch setting  The  OCU 45 supports DS3  E3  and STS 1 operation    Line Length Switch and LEDs    The LINE LENGTH LEDs reflect the electrical line length switch setting   The line length is the length of coaxial cable between the OCU 45 and the  DS3 E3 STS 1 equipment  and is set as follows              DS3   STS 1 E3  0   225 feet SHORT N A  226   450 feet LONG N A                   20 OCU 45 User Manual 61200664L1 1C    Chapter 2  Installation    Test Switch and LEDs    The TEsT LEDs reflect the loopback diagnostic switch setting  Two diagnostic  loopbacks are provided  electrical and optical loopback tests  Set to NORM for  no loopback testing    ELEC LIU OPTC XCVR    de  TX RX  Figure 2 3  Electrical Loopback    ELEC LIU OPTC XCVR  RX TX     gt         TX RX    Figure 2 4  Optical Loopback    61200664L1 1C OCU 45 User Manual 21    Chapter 2  Installation    22    OCU 45 User Manual    61200664L1 1C    Chapter3 Troubleshooting and  Maintenance    Troubleshooting guidelines and maintenance information are provided in this  chapter     TROUBLESHOOTING    Power  Condition  PowER LED is not illuminated     e If locally powered  verify the power cable installation     Electric LOS  Condition  ELECTRIC LOS LED is illuminated     1  Verify that the cable from the network demarcation is connected to the  dual BNC connectors  labeled ELECTRICAL  located on the back panel of  the OCU 45     2  Ifall connections se
15. label applied to the product  identified by  the Industry Canada logo or the    IC     in front of the certification   registration number  signifies that the Industry Canada technical  specifications were met     Notice  The Ringer Equivalence Number  REN  for this terminal  equipment is supplied in the documentation or on the product labeling   markings  The REN assigned to each terminal device indicates the  maximum number of terminals that can be connected to a telephone  interface  The termination on an interface may consist of any  combination of devices subject only to the requirement that the sum of  the RENs of all the devices should not exceed five  5      Canadian Emissions Requirements    This digital apparatus does not exceed the Class A limits for radio  noise emissions from digital apparatus as set out in the interference   causing equipment standard entitled    Digital Apparatus   ICES 003 of  the Department of Communications     Cet appareil num  rique respecte les limites de bruits radioelectriques  applicables aux appareils num  riques de Class A prescrites dans la  norme sur le materiel brouilleur   Appareils Num  riques   NMB 003  edictee par le ministre des Communications     Warranty and Customer Service    ADTRAN will repair and return this product within 10 years from the  date of shipment if it does not meet its published specifications or  fails while in service  For detailed warranty  repair  and return  information refer to the ADTRAN Equipment Wa
16. nd Return    If you determine that a repair is needed  please contact our Customer  and Product Service  CAPS  department to have an RMA number  issued  CAPS should also be contacted to obtain information  regarding equipment currently in house or possible fees associated  with repair     CAPS Department  256  963 8722    Identify the RMA number clearly on the package  below address    and return to the following address     ADTRAN Customer and Product Service  901 Explorer Blvd   East Tower   Huntsville  Alabama 35806    RMA         Pre Sales Inquiries and Applications Support    Your reseller should serve as the first point of contact for support  If  additional pre sales support is needed  the ADTRAN Support web site  provides a variety of support services such as a searchable knowledge  base  latest product documentation  application briefs  case studies  and  a link to submit a question to an Applications Engineer  All of this  and  more  is available at     http   support adtran com    When needed  further pre sales assistance is available by calling our  Applications Engineering Department     Applications Engineering  800  615 1176    Post Sale Support    Your reseller should serve as the first point of contact for support  If  additional support is needed  the ADTRAN Support web site provides  a variety of support services such as a searchable knowledge base   updated firmware releases  latest product documentation  service  request ticket generation and trouble shoo
17. rranty and Repair  and Return Policy Procedure     Return Material Authorization  RMA  is required prior to returning  equipment to ADTRAN     For service  RMA requests  or further information  contact one of the  numbers listed at the end of this section     LIMITED PRODUCT WARRANTY    ADTRAN warrants that for 10 years from the date of shipment to  Customer  all products manufactured by ADTRAN will be free from  defects in materials and workmanship  ADTRAN also warrants that  products will conform to the applicable specifications and drawings  for such products  as contained in the Product Manual or in  ADTRAN s internal specifications and drawings for such products   which may or may not be reflected in the Product Manual   This  warranty only applies if Customer gives ADTRAN written notice of  defects during the warranty period  Upon such notice  ADTRAN will   at its option  either repair or replace the defective item  If ADTRAN  is unable  in a reasonable time  to repair or replace any equipment to a  condition as warranted  Customer is entitled to a full refund of the  purchase price upon return of the equipment to ADTRAN  This  warranty applies only to the original purchaser and is not transferable  without ADTRAN s express written permission  This warranty  becomes null and void if Customer modifies or alters the equipment  in any way  other than as specifically authorized by ADTRAN     EXCEPT FOR THE LIMITED WARRANTY DESCRIBED  ABOVE  THE FOREGOING CONSTITUTES THE SOL
18. s suspected  file a claim immediately with the carrier  and contact ADTRAN Technical Support  see Customer Service  Product  Support Information  and Training on page 8 for contact information    Keep the original shipping container to use for future shipment or verification  of damage during shipment     ADTRAN Shipments Include   The following items are included in ADTRAN shipments of the OCU 45   e OCU 45 unit      4 position terminal lug connector  alarm    e  3 position terminal lug connector  power       Documentation CD    POWERING THE UNIT    The OCU 45 contains a three position modular terminal lug connector for  supplying DC power to the unit  The modular terminal lug connector allows  the user to easily connect and disconnect DC power when replacing  rackmount units     To establish DC power  use 12 to 26 AWG wire to connect the modular  connector as follows     1  Connect the wire lugs on the modular connector which corresponds to  the positive     and negative     terminals on the rear panel to a  48V  DC  0 5A source     2  Connect the remaining wire lug to the frame ground     61200664L1 1C OCU 45 User Manual 17    Chapter 2  Installation    3  Once the modular connector is wired  push it firmly into the rear panel  power connector        NOTE Use copper conductors only        Table 2 1 and Figure 2 1 illustrate the DC power connector and give  definitions for the three connector symbols     Table 2 1  DC Connector Symbol Definitions       Symbol   Definition  
19. tacts with a front panel  RESET     Diagnostics include metallic and optical loopbacks  initiated via a front  panel switch  Three LEDs are located on the front panel to monitor the sta     tus of both the metallic and optical interfaces     The OCU 45 is powered from a  48V source  An optional AC to  48 VDC  converter is available to allow the unit to be AC powered     61200664L1 1C OCU 45 User Manual 13    Chapter 1  General    FRONT PANEL FEATURES    The OCU 45 front panel provides switches and LEDs to offer easy configu   ration and troubleshooting  see Figure 1 1   The three switches set the con   figuration for the electrical interface  electrical line length  and loopback test  options  The LEDs indicate the status of the power supply  the electrical  interface type and line length  loopback diagnostics  and electrical and opti   cal interface status  A brief description of the LEDs is as follows      The POWER LED shows that the unit is receiving power       The INTERFACE LED indicates the current electrical interface configura   tion       The LINE LENGTH LEDs indicate the current electrical line length con   figuration       The TEST LEDs indicate that there is an active loopback at the electrical  or optical interface  or that the unit is in normal operation       The ELECTRIC LEDs indicate the current status of the electrical inter   face       The OPTICAL LEDs indicate the current status of the optical interface            ADRAR MUE    INTERFACE    POWER RESET   
20. ting tools  All of this  and  more  is available at     http   support adtran com  When needed  further post sales assistance is available by calling our  Technical Support Center  Please have your unit serial number    available when you call     Technical Support  888  4ADTRAN    Installation and Maintenance Support    The ADTRAN Custom Extended Services  ACES  program offers  multiple types and levels of installation and maintenance services  which allow you to choose the kind of assistance you need  This  support is available at     http   www adtran com aces  For questions  call the ACES Help Desk   ACES Help Desk  888  874 ACES  2237     Training   The Enterprise Network  EN  Technical Training Department offers  training on our most popular products  These courses include  overviews on product features and functions while covering  applications of ADTRAN s product lines  ADTRAN provides a  variety of training options  including customized training and courses  taught at our facilities or at your site  For more information about  training  please contact your Territory Manager or the Enterprise  Training Coordinator     Training Phone  800  615 1176  ext  7500  Training Fax  256  963 6700  Training Email training adtran com    Table of Contents    Chapter 1 General           ccc ccc cece ce cee ee ee eee teens 13  WnitiOverviews     xl iad a Ve I uerb ferui uer ies 13  Front Panel Features olde Lee 14  Figure 1 1  OCU 45 Front Panel            0 0 0    renere 14  Rear P
    
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