User's Manual

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Prism System Components

Page 50 FlexWave Prism Host, Remote and EMS 5.1 System Reference

2.4 PRISM SYSTEM ACCESSORIES

This section provides a brief description of various accessory items that are available

separately. The accessory items may or may not be required depending on the

application.

2.4.1 Lightning Surge Suppressor (Remote Accessory)

An externally-mounted lightning surge suppressor is available separately as an

accessory for the Remote. To reduce the chance of damage to electronic components

should a lightning strike occur, install a lightning surge suppressor at each antenna

port that connects to an outdoor antenna. The surge/antenna connector on the

lightning suppressor is an N-type female connector. The Prism Remote Unit must be

properly grounded for the lighting surge suppressor to function properly.

2.4.2 Uninterruptible Power Supply (Accessory)

Any power interruption without an external Uninterruptible Power Supply (UPS)

system will potentially result in an RF power outage. If a UPS is required it should be

designed into the site plan during the engineering process.

2.4.3 Wavelength Division Multiplexer System

(Accessory)

In some applications, it may be desirable or necessary to combine the forward path

and reverse path optical signals from a single Host/Remote pair onto a single optical

fiber. This can be accomplished by using a passive bi-directional Wavelength Division

Multiplexer (WDM) system. The optical wavelengths used in the Prism system are

1550 nm for the forward path and 1310 nm for the reverse path. Because different

wavelengths are used for the forward and reverse paths, both signals can be

combined on a single optical fiber. A WDM application is shown in Figure 2-15.

Figure 2-15. Wavelength Division Multiplexer Application

77073-053

NON-DIVERSITY FIBER OPTIC LINK

FORWARD AND

REVERSE PATH

DIVERSITY FIBER OPTIC LINK

WDM

FORWARD AND

REVERSE PATH

AND

DIVERSITY REVERSE PATH

WDM

HOST

UNIT

REMOTE

UNITS

WDM

REMOTE

UNITS

WDM

UP TO

EIGHT