AALogic ST-101, User Manual

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Version 1.0.2 1
1 G
ENERAL
D
ESCRIPTION
The ST-101 Signal Transmitter is a signal transmitter used to transmit signals on twisted pair telephone lines for
locating resistive faults when used with a receiver such as the AALogic SR-101.
1.1 F
EATURES
The features of the ST-101 Signal Transmitter include:

Five frequencies: 335Hz, 577Hz, 987Hz, 2KHz, and 4KHz.

Simple user interface and operation.

Rechargeable internal battery

Water resistant, lockable case
1.2 H
OW
F
AULT
L
OCATING
W
ORKS
The ST-101 helps locate faults by transmitting a signal on a pair with a resistive fault. The technician uses a
signal receiver, such as the AALogic SR-101, to trace the signal on the cable. The current flowing in the
pair causes the signal to be radiated. The highly sensitive receiver, tuned to the same frequency as the
transmitted signal, allows the technician to locate the fault by observing the changes in the signal
strength. The signal significantly increases or decreases as the technician moves past the fault.
The ST-101 offers a high voltage, low current signal that is compatible with receivers capable of
monitoring one of the five signal frequencies.
This manual describes the setup of the transmitter for the various faults to be located. It is important that
the technician setup the system as described to obtain reliable results. In all cases, a complete circuit,
through the fault, is required.
The receiver operating instructions must also be used for effective location of faults.
2 W
HAT IS INCLUDED
The ST-101 includes the following:

ST-101 Signal Transmitter

Test cord with clips

Charger

USB Drive with manual