Ameritec AM-44A

The Ameritec Model AM44a series Personal V.F. Test Set is a handheld telecommunications transmission test set designed to make analog telephone transmission measurements in accordance with Bell Publication 41009 or ITU recommendations. The unit contains The generator and measurement functions may be operated simultaneously for full duplex operation.

The system is based on digital circuit design employing a dual low power microprocessor with CMOS EPROM program store. All
integrated circuits are CMOS for low power consumption. The measurements are displayed on a custom liquid crystal display
that also contains operating mode annunciators. Because of the all-digital design, there are no calibration adjustments, and the unit will maintain specified accuracy during its entire life.both a signal generator and measurement capability, and operates in the telephone voice band (i.e., 200HZ to 5KHZ, measure capability to 10KHZ). The unit is compatible with both 2-Wire and 4-Wire telephone circuits and can be used on private lines or switched access lines.

SIGNAL GENERATOR SECTION	MEASUREMENT SECTION
2713HZ Momentary	Level
1004HZ	Frequency
Quiet Termination	C-Message Noise
Variable frequency (204HZ-5004HZ)
P/AR Send	P/AR Measure

Slope tones	Notch Noise
DTMF	3KHZ Noise
MF, Dial Pulse	S/N Ratio

The generator and measurement functions may be operated simultaneously for full duplex operation. The system is based on digital circuit design employing a dual low power microprocessor with CMOS EPROM program store. All integrated circuits are CMOS for low power consumption. The measurements are displayed on a custom liquid crystal display that also contains operating mode annunciators. Because of the all-digital design, there are no calibration adjustments, and the unit will maintain specified accuracy during its entire life. B. PHYSICAL All components are mounted on three interlocking printed circuit boards that are housed within a high-impact injection-molded ABS plastic case. The case is factory sealed, since there are no user-serviceable parts inside. The unit, with batteries, weighs 26 ounces and measures 1.7” (106mm x 193mm x 43mm).