Omicron Lab OTMC 100 User manual

Smart Measurement Solutions®
OTMC 100
User Manual

Manual version: ENU 1066 05 01
© OMICRON Lab 2019. All rights reserved.
This user manual is a publication of OMICRON electronics GmbH.
This user manual represents the technical status at the time of printing. The product information,
specifications, and all technical data contained within this user manual are not contractually binding.
OMICRON electronics reserves the right to make changes at any time to the technology and/or
configuration without announcement. OMICRON electronics is not to be held liable for statements and
declarations given in this user manual. The user is responsible for every application described in this
user manual and its results. OMICRON electronics explicitly exonerates itself from all liability for
mistakes in this manual.
Please feel free to copy and print this manual for your needs.
Microsoft, Windows, and Internet Explorer are either registered trademarks or trademarks of Microsoft
Corporation in the United States and/or other countries. Mozilla® and Firefox® are registered
trademarks of the Mozilla Foundation. Google Chrome is a trademark of Google Inc., used with
permission. Apple and Bonjour are registered trademarks of Apple Inc. OMICRON Lab and Smart
Measurement Solutions are registered trademarks of OMICRON electronics GmbH.
OTMC 100 Series User Manual
2OMICRON

Contents
Compliance statement ........................................................................................................ 5
Recycling ............................................................................................................................ 5
Preface & general safety instructions ............................................................................ 6
1Introduction and designated use .................................................................................... 8
2Scope of delivery, ordering information, accessories .................................................. 11
3 Device overview ............................................................................................................... 13
4 Mounting ........................................................................................................................... 15
4.1 Safety instructions .............................................................................................................. 15
4.2 Suitable mounting positions ............................................................................................... 15
4.3 Mounting instructions ......................................................................................................... 17
4.3.1 Mounting instructions for mast mounting ........................................................................................... 17
4.3.2 Mounting instructions for temporary mounting using the 1/4" BSW thread ........................................ 19
5 Connection, access & initial setup ................................................................................. 20
5.1 Connecting OTMC 100 to an Ethernet network ................................................................. 20
5.2 Accessing OTMC 100 from a computer ............................................................................. 22
5.2.1 System requirements ......................................................................................................................... 22
5.2.2 Accessing the OTMC 100 web interface ............................................................................................ 22
5.3 Next steps to set up OTMC 100 ......................................................................................... 25
6 Operating OTMC 100 ........................................................................................................ 27
6.1 Operating procedures performed via the web interface ..................................................... 27
6.1.1 Viewing the GPS, PTP, NTP and network status .............................................................................. 27
6.1.2 Defining a password .......................................................................................................................... 27
6.1.3 Running a software update for OTMC 100 ........................................................................................ 28
6.1.4 Performing a reboot of OTMC 100 ..................................................................................................... 28
6.1.5 Performing a factory reset (reset to factory defaults) ......................................................................... 29
6.1.6 Creating a system snapshot for troubleshooting ................................................................................ 29
6.1.7 Uploading new software to the device in recovery mode ................................................................... 29
6.1.8 Assigning an IP address manually ..................................................................................................... 30
6.1.9 Viewing and/or exporting the system log file ...................................................................................... 30
6.2 Operating procedures performed directly on the device .................................................... 31
6.2.1 Performing a reboot of OTMC 100 ..................................................................................................... 31
6.2.2 Performing a factory reset (reset to factory defaults) ......................................................................... 32
7 The OTMC 100 web interface .......................................................................................... 33
7.1 Overview ............................................................................................................................ 35
7.2 Status ................................................................................................................................. 37
7.2.1 GPS status page ................................................................................................................................ 38
Contents
OMICRON 3

7.2.2 PTP status page ................................................................................................................................ 39
7.2.3 NTP status page ................................................................................................................................ 47
7.2.4 Network status page .......................................................................................................................... 50
7.2.5 Log Viewer page ................................................................................................................................ 53
7.3 Configuration ...................................................................................................................... 54
7.3.1 Network configuration page ............................................................................................................... 55
7.3.2 Security configuration page ............................................................................................................... 58
7.3.3 PTP configuration page ..................................................................................................................... 62
7.3.4 NTP configuration page ..................................................................................................................... 69
7.3.5 Log & Notification page ...................................................................................................................... 72
7.3.6 SNMP configuration page .................................................................................................................. 75
7.4 Tools ................................................................................................................................... 77
7.4.1 Device Control page .......................................................................................................................... 78
7.4.2 Software Update page ....................................................................................................................... 79
7.4.3 Configuration Management page ....................................................................................................... 80
8 Automation interface ....................................................................................................... 81
8.1 Access ................................................................................................................................ 81
8.2 Configuration ...................................................................................................................... 81
9 OMICRON Device Link ..................................................................................................... 82
9.1 Installing OMICRON Device Link ....................................................................................... 82
9.2 Accessing the OTMC 100 web interface ............................................................................ 82
10 Technical data .................................................................................................................. 84
10.1 General specifications ........................................................................................................ 84
10.2 Mechanical specifications ................................................................................................... 84
10.3 Environmental conditions ................................................................................................... 84
10.4 Standards ........................................................................................................................... 85
11 Open Source software license information ................................................................... 86
12 Glossary ............................................................................................................................ 87
Support .............................................................................................................................. 88
OTMC 100 Series User Manual
4OMICRON

Compliance statement
Declaration of Conformity (EU)
The equipment adheres to the guidelines of the council of the European Community for meeting the
requirements of the member states regarding the electromagnetic compatibility (EMC) directive and
the RoHS directive.
FCC Compliance (USA)
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
• Consult the dealer or an experienced radio/TV technician for help.
Changes or modifications not expressly approved by the party responsible for compliance could void
the user's authority to operate the equipment.
Declaration of Compliance (Canada)
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de le classe B est conforme à la norme NMB-003 du Canada.
Recycling
This equipment (including all accessories) is not intended for household use.
At the end of its service life, do not dispose of the device with household
waste!
For customers in EU countries (incl. European Economic Area)
OMICRON devices are subject to the EU Waste Electrical and Electronic Equipment
Directive (WEEE directive). As part of our legal obligations under this legislation,
OMICRON offers to take back the device and ensure that it is disposed of by
authorized recycling agents.
For customers outside the European Economic Area
Please contact the authorities in charge for the relevant environmental regulations in
your country and dispose the OMICRON device only in accordance with your local
legal requirements.
OMICRON 5

Preface & general safety instructions
This user manual provides information about the OTMC 100 series grandmaster clocks, their possible
fields of application and how to install and operate them. It furthermore provides information about
how to access and configure the devices using a computer.
Following the instructions given in this user manual will help you avoid danger, repair costs and down
time, and help maintain the reliability and life of OTMC 100.
In addition to the user manual, the applicable safety and lightning protection regulations in the country
and at the site of operation as well as the usual technical procedures for safe and competent work
should be observed.
Safety symbols used
In this documentation, the following symbols indicate safety instructions for avoiding hazards.
WARNING
Death or severe injury can occur if the appropriate safety instructions are not observed.
CAUTION
Minor or moderate injury may occur if the appropriate safety instructions are not
observed.
NOTICE
Equipment damage or loss of data possible.
General safety instructions
Before operating OTMC 100, carefully read the following general safety instructions:
•OTMC 100 may only be used in a safe technical condition taking into account its defined purpose,
safety requirements and possible risks as well as the operating instructions given in this user
manual.
•OTMC 100 is exclusively intended for the application areas specified in chapter Introduction and
Designated Use on page 8. The manufacturer or the distributors are not liable for damage
resulting from unintended usage. The user alone assumes all responsibility and risks.
• Do not open OTMC 100. Opening the device invalidates all warranty claims.
•OTMC 100 is an SELV device (Safety Extra Low Voltage) which is supplied with power by Power
over Ethernet (PoE according to IEEE 802.3af). It may only be connected to Ethernet network
ports or Power over Ethernet power supplies.
• Always use the waterproof RJ45 Ethernet connector supplied with OTMC 100 in order to maintain
the watertightness of the device. Do not use OTMC 100 outdoors without a waterproof connector
inserted.
OTMC 100 Series User Manual
6OMICRON

• For outdoor installation always use a shielded Ethernet cable. The cable shield has to be
connected to the shield of the Ethernet connectors.
Preface & general safety instructions
OMICRON 7

1 Introduction and designated use
OTMC 100 is an antenna-integrated GPS controlled time reference. It provides high-precision time to
synchronize intelligent electronic devices (IEDs), computers and measurement equipment in Ethernet
(TCP/IP) based networks. The OTMC 100 series products can be used as a PTP (Precision Time
Protocol) grandmaster clock according to the IEEE 1588-2008 standard and as an NTP (Network
Time Protocol) time server for NTPv4 compliant equipment according to RFC 5905.
The fields of application for the OTMC 100 series products include applications in industrial production
involving automatic test equipment (ATE), time critical banking and telecom applications as well as
protection and control applications in the electrical power industry. OTMC 100 is the right choice
wherever accurate time in a computer based network is needed.
Due to the unique combination of GPS antenna, GPS receiver and time signal processing, OTMC 100
can be directly connected to Ethernet networks without the need of additional RF cable installation.
The OTMC 100 series is designed for outdoor use in lightning protected areas. It is intended for fixed
installation on masts. For installation requirements, please refer to the Quick Start Guide provided with
the product or to section Suitable mounting positions on page 15.
The following OTMC 100 models are available:
OTMC 100i: Time reference for use in industrial applications supporting the IEEE 1588-2008 default
profiles.
OTMC 100p: Time reference for use in the electrical power industry. In addition to the
IEEE 1588-2008 default profiles, OTMC 100p also supports the following profiles used in the electric
power industry:
• Power profile according to IEEE C37.238-2011 (IEEE profile for use of IEEE 1588-2008 Precision
Time Protocol in power systems applications).
• Power profile according to IEEE C37.238-2017 (IEEE profile for use of IEEE 1588-2008 Precision
Time Protocol in power systems applications).
• Power utility profile according to IEC/IEEE 61850-9-3:2016 (communication networks and systems
for power utility automation - Part 9-3: Precision time protocol profile for power utility automation).
For reasons of simplicity this manual uses the general term "OTMC 100" if the features and
functionality described are common for all products of the OTMC 100 series. The complete names
OTMC 100i and OTMC 100p are only used to indicate differences between the models.
The unique design of the OTMC 100 series offers many advantages:
• Web browser interface (called web interface) allowing for intuitive and straight forward setup and
control. The use of DHCP/Auto IP and the OMICRON Device Link tool allows for easy remote
access to all functions and features from a computer.
• Outstanding precision. Synchronized to the GPS satellite navigation system, the OTMC 100's
internal clock achieves a time accuracy of +/- 100 ns to reference time (UTC).
• No need for rack space in server rooms due to outdoor mounting.
• Extremely low power consumption < 2 W.
• Full compliance with IEEE 1588-2008 (IEEE 1588 version 2).
• Easy installation. No additional power supply required through PoE (Power over Ethernet).
OTMC 100 Series User Manual
8OMICRON

• Ethernet cable length up to 100 m (standard Ethernet). Can be increased to up to 2 km by using
fiber optic Ethernet and media converters.
• Automatic cable length compensation compensates errors due to propagation delays on the
network.
• Automated configuration. The possibility to upload configuration files enables easy exchange and
configuration of the hardware.
•OTMC 100 enables redundant configurations as defined in IEEE 1588-2008. The best master
clock algorithm (BMCA) guarantees that the best clock in the system is used as the master clock.
An automatic changeover to another clock is performed if the active master clock no longer
provides sufficient time accuracy.
• Due to its integrated NTP server functionality, OTMC 100 can also be used in networks containing
devices that are not yet ready for PTP. OTMC 100 is able to simultaneously operate as NTP
server and PTP grandmaster clock.
The following features are supported by the OTMC 100 software:
• Time:
• IEEE 1588-2008 version 2 support:
- Default E2E (end-to-end) and Default P2P (peer-to-peer) profile
- Power profile acc. to IEEE C37.238-2011 (OTMC 100p only)
- Power profile acc. to IEEE C37.238-2017 (OTMC 100p only)
- Power utility profile acc. to IEC/IEEE 61850-9-3:2016 (OTMC 100p only)
- One step and two step operation
- Multicast transport
- IPv4, IPv6 and layer 2
- PTP management interface
- High performance (up to 512 messages per second)
• NTPv4 (according to RFC 5905)
• Time (according to RFC 868)
• Daytime (according to RFC 867)
• Networking:
• 10Base-T/100Base-TX Ethernet
• IPv4 and IPv6
• DHCP/Autoconf
• Zeroconf (mDNS/DNS-SD)
• OMICRON OMFind service
• Differentiated services according to RFC 2474: Configurable DSCP for PTP packets
• Linux operating system:
• TFTP, FTP and SSH access
• Syslog (local and remote)
• E-Mail notification
Introduction and designated use
OMICRON 9

• Configuration:
• Web interface (HTTP & HTTPS)
• Automated configuration via SSH and XML files
• SNMP (for IEEE C37.238-2011)
• Failsafe software upgrades in the field
OTMC 100 series products are exclusively intended for the applications stated in this chapter. Any
other use is considered improper.
OTMC 100 Series User Manual
10 OMICRON

2 Scope of delivery, ordering information,
accessories
Description Part No. Figure
OTMC 100p: PTP grandmaster clock for application in
power system environments.
OTMC 100i: PTP grandmaster clock for application in
industrial environments.
The delivered set includes in addition:
• 1 mast mounting kit for mast diameters of 25 to 70 mm
(see OL000350 for details)
• 1 waterproof RJ45 connector
• 1 standard Ethernet patch cable (3 m)
• 1 OTMC 100 Quick Start Guide (printed)
• 1 CD ROM containing the OMICRON Device Link tool,
the PDF versions of the OTMC 100 Series User
Manual and the OTMC 100 Series Quick Start Guide,
and the source code of the Open Source products
used in the OTMC 100 software
OL000300
OL000301
OTMC 100pOTMC 100i
Scope of delivery, ordering information, accessories
OMICRON 11

Mast mounting kit for mast diameters of 25 to 70 mm
(accessory). Kit consisting of:
• 2 clamping blocks (1)
• 2 clamping jaws (2)
• 1 connection pipe 20 x 300 mm (3)
• 4 screws M6 x 110 with 4 lock washers (4)
• 4 screws M6 x 16 with 4 lock washers (5)
OL000350
1
2
3
45
Waterproof RJ45 connector acc. to IEC 61076-3-106,
variant 4 (accessory)
OL000351
OTMC 100 Series User Manual
12 OMICRON

3 Device overview
36 mm
2 threaded holes
for clamping block
M6 x 9 mm
Waterproof RJ45 connector
acc. to IEC 61076-3-106,
variant 4
LED
Protective cap
Base plate
106.2 mm
Ø 115.5 mm
14.5 mm
Threaded hole
1/4" BSW x 6.5 mm
for temporary mounting
on a stand
Membrane vent covering the pushbutton
(tightening torque: 0.6 - 0.8 Nm)
Type plate with
product name
and serial number
Degree of protection:
IP67 (for outdoor use) if the waterproof
RJ45 connector is inserted properly
Weight: < 500 g
OTMC 100 does not provide an ON/OFF switch. The device automatically powers up after supply
voltage is provided via Ethernet (PoE).
The LED indicates the device status:
LED continuously off OTMC 100 is not supplied with power via the RJ45 Ethernet
connector.
LED lights red Boot process during power-up or device reboot is in progress.
LED flashes red Software update is in progress.
ATTENTION: Do not disconnect OTMC 100 from its PoE source
(Ethernet network) during a software update!
LED lights orange Intermediate state when initiating a factory reset (see also Operating
procedures performed directly on the device on page 31).
LED flashes green OTMC 100 is in the recovery mode, waiting for new software. In the
recovery mode, the device provides only a rudimentary web interface
just allowing for the upload of a software image.
LED lights green OTMC 100 is ready for operation.
The green LED does not provide information about the
number of satellites received or the actual time accuracy
provided by OTMC 100. Such information are displayed in
the Status pages (see page 37) of the web interface.
The pushbutton can be accessed after unscrewing the water-tight membrane vent.
Device overview
OMICRON 13

Membrane vent
detached
Pushbutton
LED
Pushbutton
The pushbutton can be used to:
• Initiate a device reboot.
• Initiate a factory reset to reset the device configuration to the factory defaults (for example, if you
forgot your password).
Please refer to Operating procedures performed directly on the device on page 31 for more detailed
descriptions.
OTMC 100 Series User Manual
14 OMICRON

4 Mounting
4.1 Safety instructions
A position with good view to the sky will usually be located in a lightning endangered zone outside of a
building. OTMC 100 must not be exposed to direct lightning strokes and thus has to be protected
sufficiently. Therefore, OTMC 100 has to be mounted in an area protected by a lightning protection
system according to the relevant standards and regulations. The user is responsible for sufficient
lightning protection of the device and the observance of all lightning protection regulations relevant for
the site of installation.
Always use the waterproof RJ45 Ethernet connector supplied with OTMC 100 in order to maintain the
watertightness of the device. Do not use OTMC 100 outdoors without a waterproof connector inserted.
CAUTION
Risk of injury or damage due to high voltages caused by lightning stroke.
► The installation of OTMC 100 and the implementation of lightning protection
measures have to be performed by accordingly qualified experts.
► Always observe all relevant lightning protection regulations.
► The local lightning protection regulations and the protection concept of the building
and the electrical installation may require a suitable surge protection device for the
Ethernet network cable leading into the building.
► For outdoor installation always use a shielded Ethernet cable. The cable shield has
to be connected to the shield of the Ethernet connectors.
4.2 Suitable mounting positions
OTMC 100 receives the time information from the satellites of the GPS system. However, GPS
reception generally requires a plain line of sight between the antenna and the satellites.
For proper function, OTMC 100 requires signal reception from at least 4 GPS satellites. The more
satellites it can receive, the more reliable the time information OTMC 100 can deliver.
OTMC 100 should generally be mounted outdoors at a location that provides free view in a range of
180° vertically to the sky and 360° horizontally around the device. The view to the sky must not be
blocked by any objects. This is usually given when mounting OTMC 100 on a roof or a sufficiently high
mast. Refer to the figure below.
You should furthermore consider that GPS signals may be reflected by large buildings and structures
around your OTMC 100, which may deteriorate the timing accuracy of OTMC 100.
Always mount OTMC 100 in an upright position with the protective cap to the top, as shown in the
figure below. The RJ45 connector on the base plate of OTMC 100 must point vertically downwards.
Do not mount OTMC 100 inclined to any side or with the base plate to the top!
Mounting
OMICRON 15

2
BAD position.
Will not work properly!
BEST position.
Recommended!
Possible if no alternative position is
available. Not recommended!
Possible position.
Mount in an upright position OTMC 100
with the protective cap to the top only!
Provide a suitable surge
protection device to the Ethernet
cable leading into the building!
Always observe all relevant
lightning protection regulations!
Use shielded Ethernet cable only!
4
1
3
1
Recommended mounting position with best possible reception of GPS signals.
This mounting position provides direct view to the sky. The view is not hindered by any
objects and the GPS signals are not influenced by any reflections.
2
Possible mounting position providing sufficient reception of GPS signals under most
conditions. This mounting position provides direct view to the sky in a range of nearly 180°.
The view is only partly hindered and there is negligible danger of reflections that could
influence the GPS signals.
3
Possible mounting position if no other mounting position is available. Not recommended!
This mounting position provides direct view to the sky for a range of more than 90° but much
less than 180°. The view to the right is hindered by the taller part of the building and there is
an increased danger of reflections that could influence the GPS signals.
4
Bad mounting position. Do not use!
This mounting position provides direct view to the sky for a range of only 90°. Half the sky is
blocked by the taller part of the building and the reception of GPS signals will be considerably
influenced by reflections. OTMC 100 will not work properly.
OTMC 100 Series User Manual
16 OMICRON

4.3 Mounting instructions
There are two possible ways for mounting OTMC 100 devices. Refer to the subsections below for
detailed mounting instructions.
Mast mounting using the delivered mast mounting
kit.
Temporary mounting using the 1/4" BSW
(British Standard Whitworth) thread for
mounting on a stand, for example.
4.3.1 Mounting instructions for mast mounting
The mast mounting kit delivered with OTMC 100 contains the following parts:
• 1 mast clamp consisting of 2 clamping jaws and 4 fastening screws M6 x 110 with lock washers
• 2 clamping blocks and 4 fastening screws M6 x 16 with lock washers
• 1 connection pipe 20 x 300 mm
Proceed as follows:
Assemble the mast clamp and attach it to the mast as
shown in the figure.
The mast clamp is suitable for mast diameters of 25
to 70 mm.
Use a tightening torque of 5 Nm for the fastening
screws of the clamping block (1). The tightening
torque for the fastening screws of the mast clamp (2)
depends on the material and diameter of the mast.
1 2
Attach the clamping block (3) to the base plate of
OTMC 100 as shown in the figure.
Use a tightening torque of 5 Nm for the fastening
screws.
Exclusively use the two M6 x 16 screws delivered
with the mast mounting kit. Do not use longer screws.
The threaded holes in the base plate are only 9 mm
deep.
3
Mounting
OMICRON 17

Insert the connecting pipe (4) to the clamping blocks
on OTMC 100 and the mast clamp as shown in the
figure.
5
4
Align the OTMC 100 device in an upright position as
shown in the figure and tighten both clamping screws
(5) of the clamping blocks evenly with a tightening
torque of 5 Nm.
Assemble the delivered waterproof RJ45 connector
to the Ethernet cable according to the accompanying
assembly instructions and insert it to the RJ45
connector on the base plate of OTMC 100. Use
suitable cable ties to fasten the Ethernet network
cable to the connecting pipe and the mast.
Always use the waterproof RJ45 Ethernet
connector supplied with OTMC 100 in order
to maintain the watertightness of the
device. Do not use OTMC 100 outdoors
without a waterproof connector inserted.
The clamping blocks provide holes for
horizontal and vertical mounting of the
connecting pipe. Therefore, it is also
possible to mount OTMC 100 on the top of
a vertically mounted connecting pipe, as
shown in the figure on the right.
OTMC 100 Series User Manual
18 OMICRON

4.3.2 Mounting instructions for temporary mounting using the 1/4"
BSW thread
Screw the grub screw of the stand into the 1/4" BSW
(British Standard Whitworth) thread (1) on the base
plate of OTMC 100 and tighten it sufficiently.
The threaded hole in the base plate is 6.5 mm deep.
Make sure not to screw in the grub screw too deep.
Assemble the delivered waterproof RJ45 connector
to the Ethernet cable according to the accompanying
assembly instructions and insert it to the RJ45
connector on the base plate of OTMC 100. If
necessary, use suitable cable ties to fasten the
Ethernet network cable to the stand.
1
Do not move OTMC 100 during operation. Changing the position of OTMC 100 during
operation causes time errors.
Mounting
OMICRON 19

5 Connection, access & initial setup
5.1 Connecting OTMC 100 to an Ethernet network
Note regarding network switches:
The precise synchronization of clocks via Ethernet networks requires that the propagation
delay times for data packets is constant on the entire network. Network switches that do not
provide transparent clock functionality may introduce jitter and thus influence the propagation
delay. Therefore, OTMC 100 will only be able to provide highly accurate time
synchronization in networks that are equipped with network switches providing transparent
clock functionality as specified in IEEE 1588-2008 or that do not have a network switch at all.
Do not connect conventional RJ45 connectors that are equipped with a locking tab to
OTMC 100. The locking tab of such connectors cannot be accessed directly anymore after
inserting the plug to OTMC 100. In this case, a small screwdriver must be used to carefully
unlock the RJ45 connector in the socket. Use the waterproof RJ45 connector supplied with
OTMC 100 instead or, when using a cable with a conventional RJ45 connector (for test
purposes only!), break off the locking tab at the RJ45 connector before inserting it to
OTMC 100.
OTMC 100 is supplied with power by Power over Ethernet (PoE) according to IEEE 802.3af. If the
network port OTMC 100 is connected to does not provide PoE, a PoE injector has to be used as
shown in the figure below.
OTMC 100 supports Ethernet cable lengths of up to 100 m without the need of repeaters. By using
additional media converters the use of optical Ethernet is possible, which allows much longer
distances. Depending on the used variant it is possible to cover distances up to 2000 m. For further
details, please refer to the user manual of the media converters used.
OTMC 100 automatically powers up after inserting the RJ45 plug and providing supply voltage to
OTMC 100. After the device is supplied with voltage, the LED first lights up red for approx. 15 s during
the boot process and then changes to green to indicate operational readiness.
OTMC 100 is a class 1 powered device (PD) as defined in IEEE 802.3af (power
consumption < 3.84 W). The network port OTMC 100 is connected to must be able to supply
a class 1 powered device.
CAUTION
Risk of injury or damage due to high voltages caused by lightning stroke.
The local lightning protection regulations and the protection concept of the building and
the electrical installation may require a suitable surge protection device for the Ethernet
network cable leading into the building.
The following figure shows the general arrangement of OTMC 100, the surge protection device and
the PoE injector (if necessary).
OTMC 100 Series User Manual
20 OMICRON