What Is It?
The Ameritec Model AM44XT is a compact,
user-friendly, yet powerful hand-held analog
transmission test
set. About the size of a personal organizer and weighing less
than
2 lbs., it can easily be transported in a briefcase or
slide into a tool kit. Powered by four
AA batteries or an
accessory 110/220 VAC adapter/recharger.
The unit is designed for field testing and measurement of voice
and data for 2 or 4 wire
telecommunications transmission
circuits. This unit is a full function signal generator
able to generate all of the test tones and waveforms needed to perform a
variety of
standard measurements. It is a telephone set with
built-in dial, talk and listen capability
with a selection of 600 ohm or 900 ohm termination impedance. This unit fully
complies
with Bell Standard 41009.
What Does It Do?
The Ameritec Model AM44XT can do a variety of
measurements. With its built-in dial
capability on dial-up
networks it can access a distant responder or a second AM44XT
for centralized 2-wire testing. You can use a single unit with
an Ameritec responder for
centralized loop back testing. Or, use
two sets for a complete end-to-end test of 4-wire
data lines.
How Does It Work?
The user utilizes the color-coded controls and menu selection to
select the desired
measure mode and send mode. Measurements are
captured and are automatically
displayed. Immediate display indicates if the measurement is out of range "over" or
"under". All controls are edge-mounted rocker switches or slide switches
color coded
with descriptive labeling on the front of the unit for all switch functions. The keypad
which is normally used for
dialing, has a unique secondary function which allows setting
of
all control parameters associated with the more complex tests. The keypad is also able
to set signal generator levels and
frequencies.
What Can It Test?
A
single unit with the capability to do the measurements of three
separate instruments.
Able to measure transmission circuits over
the extended voice band 200 Hz to
5000 Hz as follows:
- dBm level or dB loss
- Frequency
- Frequency Response
(Attenuation Distortion)
- Noise
- Noise with Tone
- Signal/Noise Ratio
- P/AR
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