Avocent HGA51G-DIR30 User Manual

The following will help you install your directional

antenna easily. Should you require further assistance,

please contact Avocent Technical Support.

Quick Installation Guide

Emerge™ HGA51G-DIR30

High Gain 5.1 GHz Directional Antenna

Emerge HGA51G-DIR30 Antenna

Shown with EWMS1000 Extender

Extended Range Operation

The HGA51G-DIR30 directional antenna is

an accessory for Emerge wireless extenders,

which are factory-equipped with omni-

directional antennas. Directional antennas

provide extended range operation by focusing

the energy of radio waves into an intensiﬁed

directional beam. Extended distance operation

requires installation of at least one directional

antenna onto a transmitter and one onto a

receiver. Installation of two antennas per unit

will guard against signal blockage but will not

increase transmission distance.

If your wireless extenders are not already

properly placed and connected to audio, video,

power and control sources, then please refer

the appropriate product documentation before

proceeding with the instructions provided in

this document.

Facing the product, remove the omni-

directional antenna from the left-hand antenna

jack on both the transmitter and receiver.

The antennas loosen from the antenna jack

by turning the knurled fastener in a counter-

clockwise manner.

Select either directional antenna and

extend the assembly such that its connector

Omnidirectional Antenna

Knuckle Joint

arm and antenna shaft are parallel with each other at

the knuckle joint.

Engage the center socket of the antenna

connector arm onto the center pin of the transmitter

antenna jack. Turn the knurled fastener clockwise

until ﬁnger tight to secure the antenna.

If the transmitter is to be shelf or rack mounted,

raise the antenna head such that the antenna

shaft is pointed upward and perpendicular to the

connector arm at the knuckle joint. This motion

requires proper alignment of the knuckle joint,

which can be accomplished by rotating the antenna

shaft. Once vertical, swivel the curved antenna face

toward the intended receiver.

Directional Antenna

Antenna Head (curved face shown)

Antenna Shaft

Connector Arm

Knurled Fastener

If the transmitter is to be wall-mounted,

allow sufﬁcient clearance for the curved

antenna face to swivel freely in all directions.

Repeat steps 2 through 5 for the receiver.

For best results, position the wireless extenders

so they are on the same horizontal plane.

Using the signal strength LEDs for

guidance, swivel the curved face of transmitter

antenna head toward the directional antenna on

the receiver.

Using the signal strength LEDs for

guidance, swivel the curved face of receiver

antenna head toward the directional antenna on

the transmitter.

To Contact Avocent Technical Support: CALL (888) 793-8763 USA or 353-61-715292 Shannon, IR VISIT www.avocent.com

Avocent, the Avocent logo, and Emerge are trademarks or registered trademarks of Avocent Corporation. All other marks are the property of their respective owners. ©2007 Avocent Corporation. All rights reserved. 590-626-501C

The following will help you install your directional

antenna easily. Should you require further assistance,

please contact Avocent Technical Support.

Additional Information

Emerge extenders feature an intelligent dual

antenna system, in which the antenna with

the strongest receive signal becomes the

active antenna for transmission while the

other becomes passive. For this reason the

directional antenna, due to its increased

sensitivity, will become the active transmission

antenna when environmental conditions are

static. Under such conditions there is no

reason to install multiple directional antennas

on a single device. Transient environmental

conditions, however, as might occur in a

warehouse in which boxes are routinely

stacked and moved, can impair the signal of

the active antenna, resulting in activation of

the passive antenna. Under these shifting

conditions, it might be advantageous to install

two directional antennas on a single Emerge

wireless extender.

Emerge HGA51G-DIR30 directional antennas

are compatible with each other as well as with

omni-directional antennas. It is recommended

to install at least one directional antenna on

both the transmitter and receiver because

the receiver’s acknowledgements must be

properly received by the transmitter.

Quick Installation Guide

Emerge™ HGA51G-DIR30

High Gain 5.1 GHz Directional Antenna

Emerge HGA51G-DIR30 Directional Antenna

Shown with EWMS1000 Extender

Transmitter and receiver pair with properly aligned antennas

The directional antenna achieves extended range

by concentrating its radiated power in a narrow

(approximately 30 degree) arc. Therefore, care

must be taken to ensure that all receivers paired

with a transmitter are located within the 30

degree arc of its directional antenna.

Because a directional signal is focused into

a relatively narrow arc, it is easily blocked by

objects such as steel beams, HVAC ducts and

re-bar. For this reason, care must be taken to

avoid obstructions in the signal path. Moving

the transmitter or receiver a few feet may

improve performance signiﬁcantly.

The HGA51G-DIR30 antenna is designed to

provide 8 dB of gain within the 5.150 – 5.825

GHz UNII bands.

To Contact Avocent Technical Support: CALL (888) 793-8763 USA or 353-61-715292 Shannon, IR VISIT www.avocent.com