Operation - Testboy TB 27 Analog Manuel D'utilisation

Operation

Operation
Connect the cables of the transmitter (1) with a wire of
the line which you are seeking and the other line on
the shielding.
Activate the transmitter (1) and select the test
sound (3) (continuous or alternating tone).
Switch on the receiver (2). The device is only active
for the period in which the button (5) is pressed.
The sensitivity can be adjusted to the ambient condi-
tions.
Touch the instrument tip (6) to all lines which come
into question.
The loudest sound is received from the cable
searched for.
1. Transmitter
2. Receiver
3. Selector switch (continuous or alternating tone)
4. On / off switch of the transmitter
5. On / off button of the receiver
6. Tip of the receiver
7. Rotary switch for transmitter signal strength
8. Rotary switch for sensitivity of the receiver
9. Signal strength display
10. Power display (transmitter)
11. Power display (receiver)
12. Display test sound
When searching for a line using the cable detector, the various field strengths of the tone signal
could result in the incorrect or multiple lines being found. The cable detector may receive the tone
signal of a different line not connected to the TRANSMITTER. A weak field strength could result
in the cable detector not detecting the correct line. Tone detection can be influenced by different
factors, including:
● Screened lines/wires
● The thickness and type of insulation
● Distance from the source of sound
● Fully-isolated consumers that prevent effective earthing
● The routing of the cable network
● The condition of the test instrument and its batteries
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Testboy TB 27 Analog