OCU 45
Part Number 1200664L1,2,3,4
Document Number 61200664L1-1B
61200664L1-1B
September 2002
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
©2002, Inc.
All Rights Reserved.
Printed in U.S.A.
Notes provide additional useful information.
Cautions signify information that could prevent service
interruption.
Warnings provide information that could prevent
damage to the equipment or endangerment to
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. 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. Use only 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
3
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.
Changes or modifications to this unit not
expressly approved by the party responsible for
compliance could void the user’s authority to
operate the equipment.
4
Industry Canada Compliance Information
Notice: The Industry Canada 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 interferencecausing equipment standard entitled “Digital Apparatus,” ICES-003 of
the Department of Communications.
Cet appareil numérique respecte les limites de bruits radioelectriques
applicables aux appareils numériques de Class A prescrites dans la
norme sur le materiel brouilleur: “Appareils Numériques,” NMB-003
edictee par le ministre des Communications.
5
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 Warranty 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 SOLE 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
6
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.
7
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 and 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 # _____________
8
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-shooting 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
9
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
10
Table of Contents
List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
List of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Chapter 1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Unit Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Front Panel Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Rear Panel Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Chapter 2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Unpack and inspect the unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
ADTRAN Shipments Include . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Powering the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
LED and Switch Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Interface Switch and LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Line Length Switch and LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Test Switch and LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Optical Interface Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Chapter 3 Troubleshooting and Maintenance . . . . . . . . . . . . . . . . 27
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Electric LOS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Electric Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Optical LOS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Optical Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Alarm Relay Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Power On - Self Check Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Chapter 4 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Optical Interface - Single-mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Optical Interface - Multi-mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
T3 Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
61200664L1-1B OCU 45 User Manual 11
Table of Contents
E3 Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
STS-1 Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Agency Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Physical. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Appendix A Connector Pin Definitions . . . . . . . . . . . . . . . . . . . . .35
Power Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Alarm Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
12 OCU 45 User Manual 61200664L1-1B
List of Figures
Figure 1-1. OCU 45 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 1-2. OCU 45 Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 2-1. DC Power Connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 2-2. OCU 45 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 2-3. Electrical Loopback. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 2-4. Optical Loopback. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
61200664L1-1B OCU 45 User Manual 13
List of Figures
14 OCU 45 User Manual 61200664L1-1B
List of Tables
Table 2-1. DC Connector Symbol Definitions. . . . . . . . . . . . . . . . . . 22
61200664L1-1B OCU 45 User Manual 15
List of Tables
16 OCU 45 User Manual 61200664L1-1B
Chapter 1
General
UNIT OVERVIEW
The ADTRAN OCU 45 offers transport of T3/E3/STS-1 services over a
fiber transport 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, wall mounted, or mounted in 19 or 23-inch shelves
using an optional mounting tray. This compact device gives NSPs a convenient way to extend T3/E3/STS-1 services from their point of presence to
their customer and provides Enterprise users a powerful tool for extending
T3/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 T3, E3 or STS-1
and set the metallic line length to short or long. The OCU 45 has both normally-open and normally-closed alarm relay contacts with a front panel
Alarm Cutoff Switch (ACO).
Diagnostics include metallic and optical loopbacks, initiated via a front
panel switch. Three LEDs are located on the front panel to monitor the status of both the metallic and optical interfaces.
The OCU 45 is powered from a -48V source. An optional AC to -48Vdc
converter is available to allow the unit to be AC powered.
61200664L1-1B OCU 45 User Manual 17
Chapter 1. General
FRONT PANEL FEATURES
The OCU 45 front panel provides switches and LEDs to offer easy configuration and troubleshooting (see Figure 1-1). The three switches set the configuration 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 optical interface status. A brief description of the LEDs is as follows:
•The P
•The I
tion.
•The L
figuration.
•The T
or optical interface, or that the unit is in normal operation.
•The E
face.
•The O
LED shows that the unit is receiving power.
OWER
NTERFACE
INE LENGTH
EST
LECTRIC
PTICAL
LED indicates the current electrical interface configura-
LED indicates the current electrical line length con-
LED indicates that there is an active loopback at the electrical
LED indicates the current status of the electrical inter-
LED indicates the current status of the optical interface.
Figure 1-1. OCU 45 Front Panel
18 OCU 45 User Manual 61200664L1-1B
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
NORMALLY 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 2-21.
Figure 1-2. OCU 45 Rear Panel
61200664L1-1B OCU 45 User Manual 19
Chapter 1. General
20 OCU 45 User Manual 61200664L1-1B
Chapter 2
Installation
UNPACK AND INSPECT THE UNIT
Carefully inspect the OCU 45 for any damage that may have occurred in
shipment. If damage is suspected, file a claim immediately with the carrier
and contact ADTRAN Technical Support (see Post-Sale Support in the
beginning of this manual 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:
• OCU 45 unit
• 4-position terminal lug connector (alarm)
• 3-position terminal lug connector (power)
•User Manual
61200664L1-1B OCU 45 User Manual 21
Chapter 2. Installation
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.
3. Once the modular connector is wired, push it firmly into one of the rear
panel
P
OWER
connectors.
Use copper conductors only.
Table 2-1 and Figure 2-1 illustrate the DC power connector and give
definitions for the four connector symbols.
Symbol Definition
+ Positive side of DC power source (usually ground)
- Negative side of DC power source (usually -48V)
Frame Ground
Table 2-1. DC Connector Symbol Definitions
+
Figure 2-1. DC Power Connector
22 OCU 45 User Manual 61200664L1-1B
Chapter 2. Installation
The following UL requirements must be met during installation of the OCU 45
DC version:
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, 15A.
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.
61200664L1-1B OCU 45 User Manual 23
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.
Figure 2-2. OCU 45 Front Panel
Power Supply
P
OWER
The
LED is active when the unit is on and receiving full power.
Interface Switch and LED
I
The
NTERFACE
LED reflects the electrical interface switch setting. The OCU
45 supports DS3, E3, and STS-1 operation.
Line Length Switch and LED
L
The
INE LENGTH
LED reflects 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
S
0 - 225 feet
226 - 450 feet
24 OCU 45 User Manual 61200664L1-1B
HORT
L
ONG
N/A
N/A
Chapter 2. Installation
Test Switch and LED
TEST
The
loopbacks are provided:
LED reflects the loopback diagnostic switch setting. Two diagnostic
ELECTRICAL
and
OPTICAL
. The following figures show
testing diagrams for the Electrical and Optical loopback tests.
OPTC XCVRELEC LIU
RX
TX
RX
TX
ELEC LIU
TX
RX
Figure 2-3. Electrical Loopback
OPTC XCVR
TX
RX
Figure 2-4. Optical Loopback
61200664L1-1B OCU 45 User Manual 25
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:
Worst case optical transmit power = -5 dBm
Worst case optical receiver sensitivity = -34 dBm
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:
Worst case optical transmit power = -16 dBm
Worst case optical receiver sensitivity = -31 dBm
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 is less than 500 FITS.
A removable process plug to cover the optical interface is provided with the
OCU 45 unit.
26 OCU 45 User Manual 61200664L1-1B
Chapter 3 Troubleshooting and
Maintenance
Troubleshooting guidelines and maintenance information are provided in this
chapter.
TROUBLESHOOTING
Power
P
LED
Condition:
• If locally powered, verify the power cable installation.
Electric LOS
OWER
is not illuminated.
Condition:
E
LECTRIC LOS
LED
is illuminated.
1. Verify that the cable from the network demarcation is connected to the
dual BNC connectors (labeled
LECTRICAL INTERFACE
) located on the
E
back panel of the OCU 45.
2. If all connections seem intact, check the DS3/STS-1 device on the other
end of the circuit.
Electric Alarm
E
Condition:
LECTRIC ALARM
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. If the current electrical interface configuration setting is correct, check
the DS3/STS-1 device connected to the OCU 45.
61200664L1-1B OCU 45 User Manual 27
LED
is illuminated.
Chapter 3. Troubleshooting and Maintenance
3. Alternately, an
ELECTRIC ALARM
could indicate 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
1. Verify that the fiber is fully seated in the optical connector interface of
the OCU 45 unit.
is illuminated.
Optical Alarm
O
Condition:
PTICAL ALARM
1. 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.
LED
is illuminated.
Alarm Relay Conditions
A
Condition:
1. The unit is currently experiencing an
LARM RELAYS
are indicating an active alarm.
O
PTICAL
E
LECTRICAL LOS
or
.
2. The electrical interface transmit is currently not transmitting data.
3. The electrical interface setting is not configured properly (i.e., the
interface setting and the data being received are different data rates).
28 OCU 45 User Manual 61200664L1-1B
Chapter 3. Troubleshooting and Maintenance
Power On - Self Check Failure
Condition: Only the
POWER LED
is illuminated.
• The unit has failed its’ internal self check. Return the unit to the ADTRAN
Customer and Product Service (CAPS) Department as instructed in the
Repair and Return section in the front of this manual.
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
the Repair and Return section located in the front of this manual.
61200664L1-1B OCU 45 User Manual 29
Chapter 3. Troubleshooting and Maintenance
30 OCU 45 User Manual 61200664L1-1B
Chapter 4
Specifications
OPTICAL INTERFACE - SINGLE-MODE
Connector Standard SC receptacle using two fibers
(one for each direction of transmission)
Transmitter Class 1 Laser
Operating
Wavelength
Cable Type 9/125 µm single-mode
Transmission Code Manchester
Distance Up to 40 km
Transmitter Output -5 dBm
Receiver Sensitivity -34 dBm
The single-mode optical interface complies with IEC 60825-1
and FDA 21CFR 1040.10 and 1040.11.
1310 nm
61200664L1-1B OCU 45 User Manual 31
Chapter 4. Specifications
OPTICAL INTERFACE - MULTI-MODE
Connector Standard ST receptacle using two fibers
(one for each direction of transmission)
Transmitter ELED
Operating
Wavelength
Cable Type 62.5/125 µm multi-mode
Transmission Code Manchester
Distance Up to 2 km
Transmitter Output -16 dBm
Receiver Sensitivity -31 dBm
The multi-mode optical interface complies with IEC 825-1.
1310 nm
T3 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)
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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 T3, E3, STS-1
Metallic Line
Buildout
Short, Long
DIAGNOSTICS
Built-in selftest
Metallic Loopback
Optical Loopback
61200664L1-1B OCU 45 User Manual 33
Chapter 4. Specifications
ALARMS
External alarm contacts for critical and non-critical alarms
Normally open and normally closed pinouts
Front panel alarm cutoff (ACO) switch
AGENCY APPROVALS
Emissions Part 15, Class A
Bellcore NEBS, Level 3
Safety UL 1950, CUL
ENVIRONMENT
Operating 0° to 50° C (32° to 122° F)
Storage -20° to 70° C (-4° to 158° F)
Relative Humidity Up to 95%, non-condensing
PHYSICAL
Dimensions 1.7” H x 6.7” W x 9.1” D
Weight 2.0 lbs
Power -48 VDC, 5 watts
34 OCU 45 User Manual 61200664L1-1B
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
61200664L1-1B OCU 45 User Manual 35
Appendix A. Connector Pin Definitions
36 OCU 45 User Manual 61200664L1-1B
Index
A
Alarm relay conditions, problems 28
Alarm relay connector, pinout
35
C
Connector, DC Power Supply 19
Connector, DC Power supply
Connector, electrical interface
Connector, optical interface
22
19
19
D
DC Power supply connector 19, 22
DC Power Supply, Connecting
22
E
E3 Interface, Specifications 33
Electric alarm, problems
Electric LED
Electric LOS, problems
Electrical interface connector
Environmental specifications
External alarm contacts
18
27
27
19
34
19
F
Front Panel 18
I
Installation 21
Interface LED
18
L
LED, Electric 18
LED, Interface
LED, Line Length
LED, Optical
LED, Power
Line Length LED
Line, 4-wire
18
18
18
18
18
33
M
Maintenance 29
O
Optical alarm, problems 28
Optical interface connector
Optical Interface, Multimode
Optical Interface, Singlemode
Optical interface, specifications
Optical LED
Optical LOS, problems
18
19
32
31
28
P
Power Connector, pinout 35
Power LED
Power On - Self Check Failure
Power, problems
Powering the Unit
18
27
22
R
Rear Panel 19
S
Shipping contents 21
Specifications
Specifications, Agency Approvals
Specifications, Alarms
Specifications, Configuration
Specifications, Diagnostics
Specifications, E3 interface
Specifications, Optical interface
Specifications, STS-1 interface
Specifications, T3 interface
STS-1 Interface, Specifications
31
34
33
33
33
32
T
T3 Interface, Specifications 32
Test LED
Troubleshooting
18
27
31
29
34
31
33
33
61200664L1-1B OCU 45 User Manual 37
Index
U
UL requirements 23
Unit overview
17
61200664L1-1B OCU 45 User Manual 38
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