NOYAFA NF-826 User Manual Download

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Fig

Fig 2

Optional connections of this Cable Locator

1. One-pole application: Connect the transmitter to only one conductor. Due to the
high-frequency signal generated by the transmitter, only one single conductor
can be located and traced. The second conductor is the ground.
This arrangement causes a high frequency current to flow through the conductor
and to be transmitted to the ground, similar to a radio or a receiver.
2. Double-pole application: The transmitter is connected to the conductor by two
test leads. This application includes live mains and dead mains.
♦ The transmitter is connected to live mains:
Connect the

“

”

hole of the transmitter to the phase line of mains and the

Grounding hole of the transmitter to the neutral line of the mains. Under this
circumstance, if there is no load in the mains, the modulated current from the
transmitter will go to the neutral line via coupling through the distributed
capacitance in the mains and then return to the transmitter.
♦ The transmitter is connected to dead mains:
Connect the hole of the transmitter to a terminal of a line in the mains, connect
the Grounding hole to the terminal of another parallel line in the mains, and then
connect the other two terminals in the mains with each other. Under such
circumstance, the modulated current will directly return to the transmitter through
the mains. Optionally, the two test leads of the transmitter can be respectively
connected to the two ends of the conductor.
Besides, the "+” hole of the transmitter can be connected to a terminal in the
mains while the Grounding hole of the transmitter can be connected to the
protective grounding terminal of the mains.

2.3 Examples of Typical Application

In this example, please take a piece of a shielded cable with a cross sectional area of 1.5mm² Provisionally
install 5m of this cable along the wall with nail clips at eye level as surface mounting. Make sure that
the wall is accessible from both sides. Create an artificial interruption at a distance of 1.5m before the
line terminal. The line terminals must be open. Strip the interrupted lead at the beginning of the light
shielded cable and connect it via the test leads (provided) with hole

of the transmitter. Connect

⑪

terminal

⑩

of the transmitter to a suitable ground. All other cable leads must also be connected to the

transmitter and the same ground (See Fig. 2-2).
Switch on the transmitter via key ,when the LCD screen of the transmitter will display the initial
screen and the buzzer will buzz. Press key of the transmitter to enter the screen for setting transmitting
level and then press up key or down key to select transmitting power level(Level I, II or III). After
this level is set, press key to exit. If you want to change the transmitting code, press key of the
transmitter for about 1 second and then press up key or down key to select transmitting code
(A,C,E,F,H or L, with default A). Press key to exit. Then, press key to send information. At this
moment, the concentric circles

⑩

on the LCD display will be gradually spread, and symbol will

display the transmitting code received by the transmitter itself, and symbol will display the signal
intensity. Press key of the receiver to power on the receiver, when the LCD screen of the receiver
will display the initial screen, the buzzer will buzz, and the receiver will enter the default "Automatic
Mode". Move the probe of the receiver slowly along the cable to the interruption position, when symbol
of the receiver will display transmitting power level, will display the code transmitted by the
transmitter, will display the dynamic signal intensity, and the loudspeaker will change tone with the
change in signal intensity. When the probe of the receiver passes the interruption position, the signal
intensity as displayed by and will have an obvious drop it completely disappears. At
this moment, press MANUAL key of the receiver to switch it to manual mode and then use key
and to reduce the sensitivity as much as possible while ensuring that the receiver's screen can display
the code transmitted by the transmitter. Then, this area is where the interruption located.

1. Full grounding should be ensured.
2. Adjust the transmitting power level of
the transmitter to adapt it to different
detection radiuses.
3.The best practice fortesting is to mark
the interruption position on the other
side of the wall.Press MANUAL key
of the receiver to switch it to manual
mode. Press key and to reduce
the sensitivity to make sure that the
signal is just receivable. Trace the
signal in front of the wall with the
receiver till it is no longer indicated.
The interruption position can be
further localized through such
adjustment.

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