M R V C o m m u n i c a t i o n s , I n c . – I n s t a l l a t i o n M a n u a l

APPENDIXF Effect of Wind on Terescope Devices

Introduction

The outdoor environment in which our devices are normally placed exposes the link to wind pressures that may affect the accuracy of the link’s alignment.

Several factors play a role in the determination of the extent to which the directionality of a TS device may be affected by the wind:

Wind speed Wind direction

Surface area of device perpendicular to wind Mechanical stability of aiming head – device system.

For example, the mechanical stability is greatest along the side-side axis of the device. Although the surface area along the side of the device is greatest, the resultant wind force

even at very high wind speeds – will barely have an impact on the beam’s direction, due to the rigid mechanics along the side-side axis.

Wind Limits for TS Devices

All TS devices have been tested in “worst-case” scenario of the above four factors. The force necessary to deviate beam was measured from different direction.

From here1, the minimum wind speed with maximum effect on beam deviation was determined.

The following table lists the minimum wind speeds for different TS products that may cause:

A momentary lapse in the communication.

An extended lapse requiring mechanical repair.

 

TS Device

Momentary

 

Extended

10” (E&F models)

110 Km/hr

 

200 Km/hr

10” with Windproof-L

Over 180 Km/hr

 

Over 250 Km/hr

 

Accessory

 

 

 

 

Over 250 Km/hr

• 4” (B,C, D models)

150 Km/hr

 

4” with Windproof-S

220 Km/hr

 

Over 300 km/hr

• Light (700& 800 series)

150 Km/hr

 

Over 250 Km/hr

PAL (TS1)

180 Km/hr

 

Over 250 Km/hr

• 8” (Models 2000, 4000

 

200 Km/hr

 

and 5000 series)

 

 

 

 

 

1We include here the formula for calculating the effective wind force on a flat surface, given a known wind speed:

Wind Force = 0.79 x (Wind Speed)2 x (Area of Surface)

For instance, assuming a wind speed of 27.78 m/s (equal to 100Km/hr) on a surface area of 0.04m2 (400cm2), the force is equal to 24.4 Newtons.

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MRV Communications TS5000/4U1/V*) TS Device Momentary Extended, Wind Force = 0.79 x Wind Speed2 x Area of Surface

TS5000/ETH/V*, TS5000/XYZ/V**, TS5000/XXX (TS5000G/XYZ/V**, TS5000/4U1/V*) specifications

MRV Communications has established a strong reputation in the networking industry, known for delivering innovative solutions that enhance the performance and reliability of communication systems. One of their standout product lines is the TS5000 series, which includes models such as TS5000/4U1/V*, TS5000/XXX, TS5000G/XYZ/V**, TS5000/XYZ/V**, and TS5000/ETH/V*. These devices are engineered to meet the growing demands of modern networks, providing a range of features that cater to various connectivity needs.

The TS5000 series is designed with versatility in mind, accommodating multiple deployment scenarios in both enterprise and service provider environments. One of the key features of the TS5000 models is their comprehensive support for multi-service operations. This means they can seamlessly handle different types of traffic including voice, video, and data, making them ideal for organizations that require robust communication solutions.

Incorporating state-of-the-art technologies, the TS5000 series supports various networking protocols and standards. This interoperability ensures compatibility with a wide array of existing network setups, allowing for easier integration and reduced overhead costs. The series utilizes advanced Ethernet technologies that enhance bandwidth efficiency and support high-speed data transfers.

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Another notable characteristic of the TS5000 series is its scalability. Organizations can start with a basic configuration and expand their network capabilities as their needs grow. This flexibility makes the TS5000 an ideal choice for businesses aiming for future growth.

In summary, the MRV Communications TS5000 series represents a comprehensive solution for today's networking challenges. With its focus on multi-service support, advanced technology, reliability, security, and scalability, the TS5000 models are well-equipped to serve the demands of diverse environments, making them a valuable addition to any network infrastructure.