User Manual

1. Introduction
WIDT20R is a USB embedded module compliant with IEEE802.11n standard. The
core chipset is from Ralink, part number is RT5572.
2. Hardware Architecture:
2.1 Main Chipset Information
2.2 Circuit Block Diagram
The major internal components and external interfaces of WIDT20R are illustrated in Figure 1-1.
Figure 1-1 WIDT20R Major Component and System Interface
3. Antennas Information
Two SMD a
ntennas supporting both TX & RX.
Hz
+VGO 8GPFGT 2CTVPWODGT
0$&%%35DGLR7UDQVFHLYHU3$ 5DOLQN 57
* Information for OEM integrator : The OEM integrator has to be aware not to provide information to the end user regarding how to install or
remove this RF module in the user manual of the end product.
The user manual which is provided by OEM integrators for end users must include the following information in a prominent location.
“To comply with FCC RF exposure compliance requirements, the antenna used for this transmitter must be installed to provide a separation
distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter.”
Label for end product must include “Contains FCC ID: A3LWIDT20R/ IC ID:649E-WIDT20R or
“ A RF transmitter inside
,
FCC ID: A3LWIDT20R/ IC ID:649E-WIDT20R”.
g
The major internal components and external interfaces of WIDT20R are illustrated in Figure 1-1.
Figure 1-1 WIDT20R Major Component and System Interface
2.2 Circuit Block Diagram
+VGO 8GPFGT 2CTVPWODGT
0$&%%35DGLR7UDQVFHLYHU3$ 5DOLQN 57
* Inf
o
rm
a
ti
o
n f
o
r
O
EM
i
nte
g
rato
r
:
The
O
EM
i
nte
g
rator
has
t
o
be
a
w
a
r
e
not
to
p
rov
id
e
i
nf
o
rm
a
ti
o
n t
o
the
e
n
d
user
r
e
g
ar
di
n
g
ho
w
to
i
n
s
t
all
o
r
remove
thi
s
RF
mo
d
u
l
e
in
t
h
e user manua
l
of t
h
e
e
n
d
p
ro
d
uct.
Th
l
hi
h
i
id d
b
OEM
it t
f
d
t
ild
th
fll i
if ti
i
it
lti
1. Introduction
WIDT20R is a USB embedded module compliant with IEEE802.11n standard. The
core chipset is from Ralink, part number is RT5572. m
2. Hardware Architecture:
2.1 Main Chipset Information
Th
e
use
r
man
ua
l
w
hi
ch
i
s
p
rov
id
e
d
by
OEM
i
n
t
e
g
ra
t
ors
f
or en
d
use
rs
mus
t
i
nc
l
u
d
e
th
e
f
o
ll
ow
i
n
g
i
n
f
orm
a
ti
on
i
n
a
prom
i
nen
t
l
oca
ti
on.
“T
o
c
omp
ly
w
i
t
h
F
CC
RF
e
x
p
osure com
pli
ance re
q
u
i
rements, t
he
a
nt
e
nn
a
used
for
this
t
r
a
n
s
m
i
tt
er
m
us
t
be
i
n
s
t
alled
t
o
p
rov
id
e
a
s
e
p
arat
i
on
di
stance
o
f
at
l
east 20
c
m from
all
p
ersons an
d
mus
t
no
t
b
e co-
l
ocate
d
or
o
perat
i
ng
in
con
j
unct
i
on w
ith
any
o
t
h
er an
t
enna
or
t
ransmitter.
”
L
abel
f
o
r
e
nd
p
roduct mus
t
i
nclude
“C
ontains
FCC
ID:
A
3LWIDT20
R/
I
C
I
D:
6
4
9
E-WIDT
20
R
or
“
A
RF
t
r
a
n
s
mitt
er
inside
,
FCC
I
D:
A3
LWIDT2
0
R
/
I
C
ID:
6
4
9
E-WIDT2
0
R
”
.