Omicron Lab OTMC 100 User manual
Smart Measurement Solutions®
OTMC 100
Quick Start Guide
Manual Version: ENU 1066 03 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
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OTMC 100 Quick Start Guide
2OMICRON
Contents
1 Introduction ...................................................................................................................... 4
1.1 About this Quick Start Guide .............................................................................................. 4
1.2 About OTMC 100 ............................................................................................................... 4
1.3 General safety instructions ................................................................................................. 4
2Device overview ............................................................................................................... 6
3Mounting ........................................................................................................................... 8
3.1 Safety instructions .............................................................................................................. 8
3.2 Suitable mounting positions ............................................................................................... 8
3.3 Mounting instructions ......................................................................................................... 10
3.3.1 Mounting instructions for mast mounting ........................................................................................... 10
4 Connecting OTMC 100 to an Ethernet network ............................................................. 12
5 Accessing OTMC 100 from a Computer ......................................................................... 14
5.1 System requirements ......................................................................................................... 14
5.2 Accessing the OTMC 100 web interface ............................................................................ 14
6 Troubleshooting ............................................................................................................... 18
6.1 Performing a factory reset (reset to factory defaults) ......................................................... 19
7 Open Source software license information ................................................................... 20
Support .............................................................................................................................. 21
Contents
OMICRON 3
1 Introduction
1.1 About this Quick Start Guide
This OTMC 100 Quick Start Guide provides short information on how to install and access OTMC 100.
It is intended as an aid for the user to install OTMC 100 and take it into operation quickly and easily.
The OTMC 100 Quick Start Guide thus provides only a small subset of information available for
OTMC 100. It cannot substitute the OTMC 100 Series User Manual.
Therefore, also read the OTMC 100 Series User Manual which is available in PDF format on the
CD ROM delivered with OTMC 100 in addition to this Quick Start Guide. The OTMC 100 Series User
Manual provides extensive and more detailed information about OTMC 100, its installation and
intended use, and how to configure and operate it.
1.2 About OTMC 100
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.
OTMC 100 is designed for outdoor use in lightning protected areas. It is intended for fixed installation
on masts. For installation requirements, please refer to chapter "Mounting" on page 8 or to the
OTMC 100 Series User Manual.
1.3 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 the
OTMC 100 Series User Manual.
•OTMC 100 is exclusively intended for the application areas specified in chapter "Introduction and
designated use" of the OTMC 100 Series User Manual. 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 Quick Start Guide
4OMICRON
•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.
• For outdoor installation always use a shielded Ethernet cable. The cable shield has to be
connected to the shield of the Ethernet connectors.
Introduction
OMICRON 5
2 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
(→ see Troubleshooting on page 18).
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.
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.
OTMC 100 Quick Start Guide
6OMICRON
The pushbutton can be accessed after unscrewing the water-tight membrane vent (tightening torque:
0.6 to 0.8 Nm).
Membrane vent
detached
Pushbutton
LED
Pushbutton
The pushbutton can be used to:
• Initiate a factory reset to reset the device configuration to the factory defaults (→ see
Troubleshooting on page 18).
• Initiate a device reboot (→ see "Performing a reboot of OTMC 100" in the OTMC 100 Series User
Manual).
Device overview
OMICRON 7
3 Mounting
3.1 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.
3.2 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.
OTMC 100 Quick Start Guide
8OMICRON
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!
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
Mounting
OMICRON 9
3.3 Mounting instructions
There are two possible ways for mounting OTMC 100.
Mast mounting using the delivered mast mounting
kit (see Mounting instructions for mast
mounting on page 10).
Temporary mounting using the 1/4" BSW
(British Standard Whitworth) thread for
mounting on a stand, for example.
3.3.1 Mounting instructions for mast mounting
The 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
OTMC 100 Quick Start Guide
10 OMICRON
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