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- 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.
- 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 Does It Do?
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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.
- 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
