Corning Optical Communication Wireless 1MRU21 3 Users manual

Corning

Mid-Power Remote Unit (MRU)
User Manual

Warranties

Hardware Warranty

Corning warrants to the original purchaser (“Customer”)
that for the duration of the warranty period, one (1) year,
commencing on the date of shipment of the Hardware, unless
otherwise agreed in writing by Corning (the “Hardware
Warranty Period”), the Hardware furnished by Corning
shall be free in all material respects from defects in material
and workmanship, and shall conform to the applicable portions
of the Specifications, as defined below (the “Hardware
Warranty”). If notified by Customer of any such defects
in material or workmanship or nonconformity with applicable
portions of the Specifications within the Hardware Warranty
Period, Corning shall promptly, at its own election and
expense, repair or replace any such Hardware proven to be
defective under the terms of this Hardware Warranty. Such
repair or replacement shall be Customer’s sole remedy and
Corning sole obligation in the event this Hardware Warranty
is invoked. If any components comprising a part of the
Hardware are replaced or repaired during the Hardware
Warranty Period, the Hardware Warranty Period for such
repaired or replaced components shall extend to the longer
of (i) the balance of the Hardware Warranty Period or (ii)
three (3) months from the date of repair or replacement. For
purposes of this Warranty, “Specifications” shall mean the
specifications and performance standards of the Products as
set forth in documents published by Corning and delivered to
Customer which contain technical specifications or
performance standards for the Products.

Customer for replacement or repair of any goods unless such
charges are authorized in advance in writing by Corning.

Software Warranty

Corning warrants to the original purchaser (“Customer”) that
for the duration of the warranty period, one (1) year,
commencing on the date of shipment of the Software, unless
otherwise agreed in writing by Corning (the “Software
Warranty Period”), the Software shall conform with, and
perform the functions set forth in the Specifications, and
shall be free from defects in material or workmanship (the
“Software Warranty”). In the event the Software is proven
to be defective under the terms of this Software Warranty,
Corning shall correct such defects or failure and ensure that
the Software conforms with, and performs the functions set
forth in, the Specifications. Customer will allow Corning to
inspect the Software at Customer’s location or to return it to
Corning’s closest repair facility.Notwithstanding the foregoing,
Corning shall have no obligation under the Software Warranty if
the Software is modified or used with hardware or software not
supplied or approved by Corning or if the Software is subject to
abuse, improper installation or application, accident, electrical
or environmental over-stress, negligence in use, storage,
transportation, or handling Third-party software distributed
with the Software may carry certain warranties which, to the
maximum extent allowed by law, Corning hereby assigns,
transfers and otherwise conveys to Customer, provided,
however, that Corning itself provides no warranty of any
kind, express, implied, statutory or otherwise, for any
third-party software provided hereunder.

If Customer invokes this Hardware Warranty, it shall notify
Corning promptly of the claimed defect. Customer will allow
Corning to inspect the Hardware at Customer’s location, or
to return the Hardware to Corning closest repair facility. For
Hardware returned to Corning repair facility, Customer shall
be responsible for payment of all transportation and freight
costs (including insurance) to Corning’s repair facility, and
Corning shall be responsible for all transportation and freight
costs (including insurance) incurred in connection with
the shipment of such Hardware to other repair facilities of
Corning and/or its return to Customer.

Notwithstanding the foregoing, in no event will Corning
be liable for damage to Products resulting from improper
handling during or after shipment, misuse, neglect, improper
installation, operation or repair (other than by authorized
Corning personnel), alteration, accident, or for any other
cause not attributable to defects in materials or workmanship
on the part of Corning. Corning shall not reimburse or make
any allowance to Customer for any labor charges incurred by

Corning does not warrant any hardware, software, or
services not provided by Corning.

THIS WARRANTY IS THE ONLY WARRANTY MADE
BY CORNING AND IS IN LIEU OF ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED INCLUDING,
BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE. CORNING SHALL NOT BE
LIABLE FOR ANY OTHER DAMAGE INCLUDING,
BUT NOT LIMITED TO, INDIRECT, SPECIAL OR
CONSEQUENTIAL DAMAGES ARISING OUT OF OR
IN CONNECTION WITH FURNISHING OF GOODS,
PARTS AND SERVICE HEREUNDER, OR THE
PERFORMANCE, USE OF, OR INABILITY TO USE
THE GOODS, PARTS, AND SERVICE. CORNING
SALES AGENTS OR REPRESENTATIVES ARE NOT
AUTHORIZED TO MAKE COMMITMENTS ON
WARRANTY RETURNS.

User Manual | CMA-438-AEN | Page 2 of 44

Returns

In the event that it is necessary to return any product
against above warranty, the following procedure shall be
followed:

immediately. Notify Corning as soon as possible in writing.

Note: Keep all packing material until you have completed
the inspection.

1. Return authorization is to be received from Corning
prior to returning any unit. Advise Corning of the
model, serial number, and discrepancy. The unit may
then be forwarded to Corning, transportation prepaid.
Devices returned collect or without authorization may
not be accepted.

2. Prior to repair, Corning will advise the customer of
our test results and any charges for repairing customer­ caused problems or out-of-warranty conditions etc.

3. Repaired products are warranted for the balance of the
original warranty period, or at least 90 days from date
of shipment.

Limitations of Liabilities

Corning’s liability on any claim, of any kind, including
negligence for any loss or damage arising from, connected
with, or resulting from the purchase order, contract,
quotation, or from the performance or breach thereof, or
from the design, manufacture, sale, delivery, installation,
inspection, operation or use of any equipment covered by
or furnished under this contact, shall in no case exceed the
purchase price of the device which gives rise to the claim.

Except as expressly provided herein, Corning makes
no warranty, expressed or implied, with respect to any
goods, parts, and services provided in connection with
this agreement including, but not limited to, the implied
warranties of merchantability and fitness for a particular
purpose. Corning shall not be liable for any other
damage including, but not limited to, indirect, special or
consequential damages arising out of or in connection with
furnishing of goods, parts and service hereunder, or the
performance, use of, or inability to use the goods, parts,
and service.

Note: The grantee is not responsible for any changes
or modifications not expressly approved by the party
responsible for compliance. Such modifications could
void the user's authority to operate the equipment.

Reporting Defects

The units were inspected before shipment and found to be
free of mechanical and electrical defects. Examine the units
for any damage that may have been caused in transit.

If damage is discovered, file a claim with the freight carrier

Warnings and Admonishments

There may be situations, particularly for workplace
environments near high-powered RF sources, where
recommended limits for safe exposure of human beings
to RF energy could be exceeded. In such cases, restrictive
measures or actions may be necessary to ensure the safe use
of RF energy.

The equipment has been designed and constructed to
prevent, as far as reasonably, practicable danger. Any
work activity on or near equipment involving installation,
operation or maintenance must be, as far as reasonably, free
from danger.

Where there is a risk of damage to electrical systems
involving adverse weather, extreme temperatures, wet,
corrosive or dirty conditions, flammable or explosive
atmospheres, the system must be suitably installed to
prevent danger. Equipment provided for the purpose of
protecting individuals from electrical risk must be suitable
for the purpose and properly maintained and used. This
covers a range of activities including lifting, lowering,
pushing, pulling, carrying, moving, holding, or restraining
an object, animal, or person from the equipment. It also
covers activities that require the use of force or effort, such
as pulling a lever or operating power tools.

Where some of the above mentioned activities are required,
the equipment must be handled with care to avoid being
damaged.

Observe standard precautions for handling ESD-sensitive
devices. Assume that all solid-state electronic devices are
ESD sensitive. Ensure the use of a grounded wrist strap
or equivalent while working with ESD-sensitive devices.
Transport, store, and handle ESD-sensitive devices in static­safe environments.

Regulatory Compliance Information

WARNINGS!

• This is NOT a CONSUMER device. It is designed for
installation by FCC LICENCEES and QUALIFIED
INSTALLERS. You MUST have an FCC LICENSE or
express consent of an FCC license to operate this device.
Unauthorized use may result in significant forfeiture
penalties, including penalties in excess of $100,000 for
each continuing violation.

User Manual | CMA-438-AEN | Page 3 of 44

• ANTENNAS: Use only authorized and approved
antennas, cables, and/or coupling devices! The use
of unapproved antennas, cables, or coupling devices
could cause damage and may be of violation of FCC
regulations. The use of unapproved antennas, cables,
and/or coupling devices is illegal under FCC regulations
and may subject the user to fines. See Section 3.6 of this
document.

RF Safety

To comply with FCC RF exposure compliance requirements:

ATTENTION!

Compliance with RF safety requirements:

• Only technicians familiar with fiber optic safety practices
and procedures should perform optical fiber connections
and disconnections of Corning optical network evolution
(ONE) solutions devices and the associated cables.

• Corning optical network evolution (ONE) solutions MRU
has been tested and certified as a Class 1 laser product to
IEC/EN 60825-1 (2007). It also meets the requirements
for a Hazard Level 1 laser product to IEC/EN 60825­2:2004 to the same degree.

• Corning optical network evolution (ONE) solutions MRU
complies with 21 CFR 1040.10 and 1040.11 except for
deviations pursuant to Laser Notice No. 50 (2007).

• Corning products have no inherent significant RF
radiation.

• The RF level on the downlink is very low at the downlink
ports. Therefore, there is no dangerous RF radiation when
the antenna is not connected.

CAUTION!

Use of controls, adjustments, or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.

Warning! Antennas used for this product must be fixed
mounted on indoor permanent structures, providing a
separation distance of at least 100 cm from all persons
during normal operation.

Warning! Each individual antenna used for this
transmitter must be installed to provide a minimum
separation distance of 100 cm or more from all persons
and must not be co-located with any other antenna for
meeting RF exposure requirements.

Warning! Antenna gain should not exceed 12.5 dBi.

Warning! The design of the antenna installation needs

to be implemented in such a way so as to ensure RF
radiation safety levels and non-environmental pollution
during operation.

Laser Safety

• Fiber optic ports of the Corning optical network evolution
(ONE™) solutions emit invisible laser radiation at the
1310/1550 nm wavelength window.

Care of Fiber Optic Connectors

• Do not remove the protective covers on the fiber optic
connectors until a connection is ready to be made.
Do not leave connectors uncovered when not connected.

• The tip of the fiber optic connector should not come
into contact with any object or dust.

Company Certification

ISO 9001:2000 and ISO 13485:2003

Licensee Contact Information

Industrial boosters may only be used by FCC licensees or
those given express (individualized) consent of license.
Corning Optical Communications Wireless certifies all
of the VARs listed as licensed installers for Corning. For
the list of licensed VARs, please contact the Tech Support
Hotline: [phone] or 800-787-1266.

About This Manual

This user guide provides all the information necessary to
understand the architecture and general installation procedures
and requirements of the Corning optical network evolution
(ONE) solutuions mid-power remote unit (MRU).

Note: The commissioning procedure, monitoring and
management capabilities, and configuration options of
Corning optical network evolution (ONE) solutions elements
are described in the Corning optical network evolution
(ONE) solutions HCM and Web management user manual.

• External optical power is less than 10 mW, internal
optical power is less than 500 mW.

• To avoid eye injury never look directly into the optical
ports, patch cords, or optical cables. Do not stare into
beam or view directly with optical instruments. Always
assume that optical outputs are on.

User Manual | CMA-438-AEN | Page 4 of 44

Table of Contents

Introduction

1

CHAPTER

1.1 Key Features and Capabilities . . . . . . . . . . . . . . . .8

1.2 General System Specifications and Requirements. . .9

1.2.1 Environmental and Regulatory

Specifications . . . . . . . . . . . . . . . . . . . . .9

1.2.2 Safety and Regulatory Approvals. . . . . . . . .9

1.2.3 Power Specifications . . . . . . . . . . . . . . . . .9

1.3 System Architecture . . . . . . . . . . . . . . . . . . . . 10

1.4 System Monitoring and Management . . . . . . . . . 11

MRU Interfaces

2

CHAPTER

2 MRU Interfaces . . . . . . . . . . . . . . . . . . . . . . . . 12

Installation Guidelines

3

CHAPTER

3.1 Site Considerations. . . . . . . . . . . . . . . . . . . . . 15

3.2 Safety Guidelines . . . . . . . . . . . . . . . . . . . . . .15

3.3 Installation Requirements . . . . . . . . . . . . . . . .15

3.3.1 Rack Safety Instructions. . . . . . . . . . . . . 16

3.3.2 Rack Installation Guidelines . . . . . . . . . .16

3.4 Power Requirements . . . . . . . . . . . . . . . . . . . 16

3.4.1 Power Safety Instructions . . . . . . . . . . . 16

3.4.2 Types of Power Supplies . . . . . . . . . . . . 16

3.4.3 Circuit Breakers . . . . . . . . . . . . . . . . . .16

3.4.4 Cable Routing . . . . . . . . . . . . . . . . . . . 16

3.5 RF Coaxial Cable Guidelines . . . . . . . . . . . . . . . 17

3.5.1 General RF Cable Installation Procedures. . 17

3.5.2 RF Rules . . . . . . . . . . . . . . . . . . . . . . .17

3.5.3 Coax Cable Lengths and Losses . . . . . . . .17

3.6 Antenna Specifications and Guidelines . . . . . . . .18

3.6.1 Authorized Antennas and Required

Specifications . . . . . . . . . . . . . . . . . . . . . 18

3.6.2 General Installation Guidelines . . . . . . . . . 18

3.7 Fiber Optic Requirements . . . . . . . . . . . . . . . . . 18

3.7.1 Authorized Optical Cables. . . . . . . . . . . . . 18

3.7.2 Fiber Optic Rules . . . . . . . . . . . . . . . . . . . 18

3.8 Grounding Requirement . . . . . . . . . . . . . . . . . 19

3.9 Manual Handling . . . . . . . . . . . . . . . . . . . . . .19

User Manual | CMA-438-AEN | Page 5 of 44

Table of Contents

(continued)

Installation

4

CHAPTER

4.1 Unpacking and Inspection . . . . . . . . . . . . . . . . .20

4.2 Mounting the MRU . . . . . . . . . . . . . . . . . . . . .21

4.2.1 Rack Installation . . . . . . . . . . . . . . . . . 21

4.2.2 Wall-Mount Installation. . . . . . . . . . . . . 22

4.2.2.1 Unpacking and Inspection . . . . . . . . 22

4.2.2.2 Mounting MRU on Wall . . . . . . . . . . 23

4.3 Grounding MRU Chassis. . . . . . . . . . . . . . . . . . 25

4.4 Fiber Connections . . . . . . . . . . . . . . . . . . . . . 26

4.5 RF Antenna Connections . . . . . . . . . . . . . . . . . 27

4.6 Power Connections . . . . . . . . . . . . . . . . . . . . . 28

4.6.1 AC Models . . . . . . . . . . . . . . . . . . . . . 28

4.6.2 DC Models . . . . . . . . . . . . . . . . . . . . .28

4.6.2.1 CLASS2 Connector (remote feed). . . . 28

4.6.2.2 CLASS1 Connector (local plant feed). . 30

4.7 Outdoor Installation . . . . . . . . . . . . . . . . . . . . 31

4.7.1 Items Required for Outdoor Installation . . 31

4.7.2 Pre-Installation Procedures . . . . . . . . . . 33

4.7.3 Install MRU in Cabinet . . . . . . . . . . . . . 34

4.7.4 MRU Connections . . . . . . . . . . . . . . . . 35

4.7.5 External Alarm Connections. . . . . . . . . . 36

4.8 Verifying Normal Operation . . . . . . . . . . . . . . .38

Appendix A:
Specifications

6

CHAPTER

Supported Services . . . . . . . . . . . . . . . . . . . . . . . . 40

RF Parameters per Service. . . . . . . . . . . . . . . . . . . .40

Coupling Specifications . . . . . . . . . . . . . . . . . . . . . 41

Environmental Specifications . . . . . . . . . . . . . . . . . 41

Standards and Approvals . . . . . . . . . . . . . . . . . . . .41

Optical Specifications . . . . . . . . . . . . . . . . . . . . . .41

Physical Specifications . . . . . . . . . . . . . . . . . . . . . 42

Appendix B:
Ordering Information

7

CHAPTER

MRU Assembly Configurations . . . . . . . . . . . . . . . . 43

MRU Assembly Configurations Upgrade for

Future AWS1/3 Support . . . . . . . . . . . . . . . . . . . .43

MRU Stand-Alone Modules . . . . . . . . . . . . . . . . . . . 44

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Cable Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . 45

Maintenance

5

CHAPTER

5.1 Extracting/Replacing PAM and OPTM . . . . . . . . . 39

User Manual | CMA-438-AEN | Page 6 of 44

Introduction

The MRU is a mid-power (2 W) remote solution for the
Corning optical network evolution (ONE™) solutions.
The MRU provides remote indoor and outdoor coverage.
It is a fiber-fed, compact, and scalable multiservice
solution designed to complement the Corning optical
network evolution (ONE) solutions by providing complete
RF open space coverage for large-scale public venues such
as campus applications.

The MRU consists of a compact enclosure that houses the
RF modules, power elements, and the required interfaces,
supporting up to seven bands in various combinations.
It enables multiple wireless technologies and operator
services to be distributed over a single broadband
infrastructure. The MRU can be deployed in new sites
or alongside existing lower-power RAU/RAU5 remotes,
sharing a common headend and element management
system. Alongside Corning optical network evolution
(ONE) solutions deployments, the MRU provides a
comprehensive indoor and outdoor coverage solution for
varying site requirements, supporting everything from
high-rise buildings and campus topologies to stadiums and
airports.

CHAPTER

1

Management and configuration options are provided for
each MRU service via a Web session to the headend
control module (HCM v1.6 and higher). The HCM enables
centralized, single-source local and remote management of
all system elements.

User Manual | CMA-438-AEN | Page 7 of 44

Mid-Power Remote Unit (MRU) | Figure 1-1

1.1 Key Features and

Capabilities

• Multi-frequency/multiservice platform – supports LTE
700, ESMR, CELL, PCS, AWS, and WCS (including an
integrated 2.5 GHz add-on port), accommodating GSM,
CDMA, UMTS, LTE, and more.

• Multioperator-optimized platform – services from a
number of operators can be distributed by the same unit.

• Cost-effective higher power – optimizes and reduces
the number of antennas required to cover open areas
by offering up to 33 dBm (2 W) composite power per
frequency band.

• Operator-grade performance – advanced signal
handling, RF filtering, and management ensures
operator-grade performance.

• Optical fiber savings – all services routed to an MRU
are routed over a single optical fiber pair.

• Modular and scalable design – modular design enables
adding new wireless services easily and cost-effectively
without disruption to workspaces or existing services.
Supports external 2.5 GHz RF source.

• Simple installation and maintenance – all connections
and status LEDs located on the front panel. MRU is
modular, hot swappable, and field upgradable.

• Management and control – alarm forward to NOC or
standard element management system (EMS) via SNMP,
software controlled output power, and optical link auto
gain control.

• Design and deployment flexibility – MRU available
in AC or DC power supply options. Antenna splitting
schemes are possible due to the higher power output
capability.

User Manual | CMA-438-AEN | Page 8 of 44

1.2 General System

Specifications and Requirements

1.2.1 Environmental and Regulatory

Specifications

Operating Storage

Temperature -40° to +65°C (-40° to 149°F) -30° to 85°C (-22° to 185°F)

Table 1-1. Temperature and Humidity Specifications

1.2.2 Safety and Regulatory Approvals

Regulation/Standard
Category

Laser Safety FDA/CE 21 CFR 1040.10 and 1040.11 except for deviations pursuant to Laser Notice

EMC FCC 47 CFR Part 15, 22, 24, 27
Safety UL 60950

NEBS GR-63, GR-1089 (with outdoor enclosure)

Table 1-2. Safety and Regulatory Approvals

Approval

No. 50 and IEC 60825-1

IEC 60825-1:2007
IEC 60825-2:2010
CAN/CSA-C22.2 No. 60950-1-03

1.2.3 Power Specifications

Power Specication Description

Power Consumption (maximum) 360 W (for fully loaded chassis)
AC Power Input

Maximum AC Current Consumption

DC Power Input

100-240 VAC/50-60 Hz

5 A

DC class 1: 48 VDC (40-60 VDC), 9 A maximum

Table 1-3. MRU Power Specifications

DC class 2: 24/48 VDC (20-60 VDC)

Power amplier consumption per pair: 50 W

Maximum power consumption: 330 W

Maximum current consumption: 1.75 A per pair

Maximum current draw per pair: 64 W

User Manual | CMA-438-AEN | Page 9 of 44

1.3 System Architecture

Figure 1-2 illustrates the MRU system architecture. In
the downlink, at the headend, BTS/BDA RF signals are
conditioned by service-specific RIMs installed in the
headend unit (i.e. HEU/IHU), ensuring a constant RF level.
The conditioned signals are then forwarded to the OIU and
converted by the OIMs to an optical signal for transporting
over single-mode fiber to the MRUs at the remote locations.
All mobile services are combined and distributed through a
single antenna port over the broadband antenna infrastructure
installed at the remote locations. In the uplink, the process is
reversed. As illustrated in the system architecture shown in
Figure 1-2, all mobile services are combined and distributed
through a single antenna port over the broadband antenna
infrastructure installed at the remote locations.

System Architecture | Figure 1-2

User Manual | CMA-438-AEN | Page 10 of 44

1.4 System Monitoring

and Management

The MRU is centrally managed via the headend control
module software management application (v1.6 and higher).
Figure 1-3 shows the management tabs of the selected
MRU. Refer to the “Headend Control Module (HCM) and
Web Management GUI v1.6” user manual (CMA-423-AEN)
for information on how to configure and manage the MRU.

Example of MRU Management GUI (SW v1.6) | Figure 1-3

User Manual | CMA-438-AEN | Page 11 of 44

MRU Interfaces

CHAPTER

2

This chapter provides detailed descriptions of the MRU
chassis and main modules and interfaces. This content
includes port and LED interface descriptions. The MRU
comprises the following main modules:

• Power amplifier modules (PAM) – internal service­specific power amplifier module that interfaces to an
optical interface module (OIM) at the headend site via
a single-mode pair and supports one service. MRU
supports up to seven bands. The PAM provides the
additional amplification on the DL signals routed from
the OIM toward the multiplexer. PAMs are pre-installed
in designated slots according to supported band.

• Multiplexer – combines the UL and DL RF signals of
the supported services in addition to external RF signal
(future option for connecting to external 2.5 GHz signal
source) while providing the proper filtering into a single
duplexed antenna port.

• Optical Module – includes the fiber optic, RF expansion,
and external alarm interfaces.

• Power supply module (PSM) – local AC or remote DC
power feed (model dependent).

• Fan module (FAM) – integrated fan module comprised of
four fans which are also monitored via the Web GUI.

The MRU includes front panel interfaces (e.g. antenna,
fiber optic connections, and LED status indicators) as
well as status indicators per each internal module (which
are accessed by opening the cabinet door). The following
sections provide details on the front panel and internal
module interfaces.

MRU Main Modules | Figure 2-1

User Manual | CMA-438-AEN | Page 12 of 44

The MRU front panel includes the RF and fiber optic
interfaces in addition to the system level status LEDs and
service maintenance ports. The internal PAMs each include
a PWR/STS LED.

MRU External Interfaces | Figure 2-2

Port Description

ANTENNA PORT 4.3-10 type duplexed RF antenna port
TEST PORT QMA coupling test port used for UL and DL measurements during system operation

2.5 GHz INPUT PORT N/A (future option); 4.3-10 type RF port for 2.5 GHz external RF source
GND One two-hole, standard barrel grounding lug (refer to Appendix A: Specications

for grounding lug specications)

User Manual | CMA-438-AEN | Page 13 of 44

Port Description

PSM Power Connector Model dependent:

AC models – AC connector connected to power source using provided AC power
cable only

DC models – two types of terminal block connectors:

• CLASS2 (default) – two “DC In” 8-pin terminal block connectors for remote
feed: one pair for each PAM (total of ve pairs) and one pair for the FAM and
OPTM; one RSV pair

• CLASS1 – one “DC-In” 2-pin terminal block for local plant feed

Exp. UL/DL SMA RF ports for UL and DL connections to add-on unit (supporting any band across

the supported spectrum: 300 MHz to 3 GHz)
List. Mode N/A
OPTIC LC APC port for single-mode ber connection
MGMT RJ45 Ethernet connection for MRU local management connection
External Alarms DB9 female external alarm connector for external dry contact alarm connections
Exp. RJ45 Ethernet connection for add-on local craft

Table 2-1. MRU Interface Ports

LED Description

PWR Steady green: Required power is supplied to MRU chassis

Off: No power input detected

RUN Blinking green: Unit is running and operational

Rapid blinking

green: “Identify” feature has been enabled via the management GUI

Off: No power input detected
STS Steady green: Normal operation; overall status OK

Steady red: Indicates generated alarm in unit

Blinking red: “Over temperature” alarm active, indicates temperature has

exceeded threshold (with door open)

Note: Temperature alarm is set as rst priority and overrides any other alarm indicator.

FAM Steady green: All four fans are operating at normal speed (fan alarms clear)

Steady red: Fault detected in at least one fan (fan alarm set)

LINK Steady green: Optical link level from optical module above normal threshold

Steady red: Optical link level is lower than normal threshold

(PAM) Steady green: Power and status of power amplier module OK. No alarms active

Steady red: One or more alarms are active

Table 2-2. MRU LED Descriptions

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