Mounting; Safety Instructions; Suitable Mounting Positions - Omicron Lab OTMC 100 Quick Start Manual

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OTMC 100 Quick Start Guide

Mounting

3.1

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

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.

OMICRON

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