1 -12/2012
Optical Power Meter
Extremely simle to use but
at same time very accurate
1 -12/2012 —
TELE-satellite International —
Small Size
But Excellent Performance
Fiber optic cables are find-
ing their way into digital TV
installations more and more
often. They are superior to
coax cables due to very low
attenuation and immunity
to electromagnetic interfer-
ence. Their advantages are
especially striking in larger
networks - dedicated for a
multistory building or even
larger. However, like with
the classical coaxial cable
networks, the installer must
have a suitable tool to meas-
ure signal power, even when
dealing with modern optical
networks. And because here
we are dealing with light
rather than electric voltage
and current, another type of
meter is needed.
The AE 120 Optical Power
Meter made by Deviser is a
tiny and lightweight meter
that you can use not only to
confirm that the optical sig-
nal is reaching a given node
of a network but also to ac-
curately measure its power
level. Using the AE120, you
can find bad fiber optic ca-
ble junctions, i.e. the ones
introducing excessive light
attenuation, or locate faulty
components - like optical
The AE120 is enclosed in
a gray plastic case which is
surrounded with a protective
holder made of blue rubber.
Below a classical LCD dis-
play, 6 buttons are located.
The input connector can be
found on the top side of the
case. Thanks to the two ad-
ditional adapters included in
the set, you can connect the
AE120 to any type of optical
connector you are likely to
find in an optical networks:
FC, SC or ST. After taking
the meter out of the blue
rubber holder you get access
to its rear panel. There is a
slide door there securing the
battery compartment. Two
AA batteries (or AA accumu-
lators) can be used. In the
set we got for testing, there
was also an AC/DC charger
The user manual that came
along with the AE120 was in
the form of a small booklet.
And because operating the
meter is so simple and intui-
tive, we are sure that except
for maybe the first time, you
will hardly need it. But any-
way, the manual is well writ-
ten and provides all the infor-
mation you might need. The
display of the meter shows
two values: optical level ex-
pressed either in dBm or in
Watts, and the wavelength
in nanometers the meter is