Advantech ADAM-4550 User Manual

ADAM-4550 User's Manual

13

Indoor communication distance is about 300 to
550 ft. using a standard 2 dB antenna.  Howev-
er, actual distance depends on environmental
conditions as well as antenna type and position-
ing.

Longer communication distances can be
achieved by using an antenna with a higher gain.
A table of communication ranges as a function
of differing combinations of antennas (at the
source and receiving ends) is displayed below.

Note : 1. While using directional antennas, care
should be taken to install and adjust the anten-
na

‘

s direction according to the instructions of

the antenna’s manufacturer.   Please see the
example specification for an external 24 dBi an-
tenna at appendix A.

2. A user’s license may be required to use a
directional antenna.  Please consult your local
authority for local regulations.

3. We strongly recommend that you install
ADAM-4550 as near as possible to its antenna.
Where the antenna has to be located at a dis-
tance from the ADAM, special RF cable is re-
quired.  Please see the example cable connec-
tion arrangement in appendix B.

4. Omnidirectional antennas should be used
when the ADAM-4550 communicates with more
than one other ADAM-4550 unit located in dif-
ferent directions.

a

n

n

e

t

n

A

t

a

n

i

a

G

d

n

e

r

e

h

t

i

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B

d

4

2

l

a

n

o

i

t

c

e

r

i

d

B

d

8

1

l

a

n

o

i

t

c

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r

i

d

-

i

n

m

o

B

d

1

1

l

a

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r

i

d

B

d

4

2

l

a

n

o

i

t

c

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r

i

d

m

K

0

1

m

K

5

m

K

2

B

d

8

1

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a

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t

c

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r

i

d

m

K

5

m

K

5

.

2

m

K

1

-

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m

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B

d

1

1

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K

2

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5

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