| The Line Tester LT41 is a handheld battery powered
instrument for testing Voice Frequency transmission
circuits and lines used for xDSL upto 200 kHz. The
main characteristic of the LT41 is the large number
of facilities provided in such a small package.
It combines the features of a comprehensive
Line Tester (including Audio Oscillator, Noise Meter, Return Loss,
Impulsive Noise, Dropout Testing) with the fully
Automatic Loss Measurement (ALM) function.
ALM is used in conjunction with a second LT41 acting as a
responder to automatically evaluate bi-directional loss
over the PSTN or a pair of data lines.
Telephone conversation is supported via a plug-in
handset. Ring voltage, loop voltage and loop current
is measured and line activity is monitored by a speaker.
Great care has been taken to achieve easy operation of
this instrument. All functions are activated by one
button. Most instruments of this complexity revert to
menu tree mode selection thereby necessitating handbook
guidance or on screen help. The LT41 can be operated
without these aids. Measurement results can be stored for
later PC evaluation and
printing.
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