SNIFFER XR- 71 Kit Manual Instruction

SNIFFER XR 71 12V - +

COIL

NOISE

SIGNAL SENS

GAIN

TUNE

TRESH

VOLUME

1. 12V.DC- Connector for power supply. 2. COIL.-Connector for search coil. 3. J3 – Switch for manual and auto tuning. When the switch is switched to auto mode, setting it to, with potentiometer TRESH and push button TUNE, within a few

seconds machine tune automatically. 4. When the switch is switched to manual mode, setting it to with

5.

6.

7. 8.

potentiometer TUNE and fine setting with potentiometer TRESH.Button tune no function in manual mode. NOISE- Regulate power.Before turn on device this potenciometer must be in minimum position extreme left.After turn on device smooth turn potentiometer a clockwise.If during this time flash a red led for bat low,turn off device and check your coil.Coil must be resistans about 3 to 5 om. when properly constructed coil in resistans about 3-5 om and inductance 400-500 uh. scheme is working properly. if necessary, to connect a resistor 2om. 5 watt. in series to coil. SIGNAL-used for acceptance and rejection of a small metal objects. increased sensitivity. SENS-regulates the effects of ground. This potentiometer can be left in the middle position. GAIN-Sets the gain.Turn this knob until you hear sound in speaker then slightly back until sound disappears.

9. TUNE -- Used for manual operation mode.When rotates smoothly

to heartaking sound in speaker. 10. TRESH- Used for auto mode .When rotates smoothly to heartaking sound in speaker. 11. Buttone TUNE-by pressing and holding this button for several seconds scheme automatically adjusts .This buttone work only in auto mode. 12. VOLUME-Adjust sound.

CONSTRUCTION of the search coil 1.Framework search coil can be made as are needed 4 x 1 m. pipe

with diameter 32 mm.4 count PVC elbow.Connect the four tubes in a square with knees.Inside this square have the coil windings. Windings of the coil can be made from standard Internet FTP cable CAT 5 or UTP 8 wire cable,by making a coil inside the pipe and can outside of pipes .Eight cables are connected in series ,as start and end are the terminals of the coil. Another option for making the framework as a coil inside the pipes are lap 1516 coils of flexible (stranded cable) with a diameter of 0.70 to 1 mm. 2.For the construction of a small coil, for example 32-40 cm are needed about 3 turns of FTP cable series.Or 25-30 windings from 0.50.8 mm . The coil parameters are:Resistance about 3-5om. And inductance about 400-500uh. . To further the scheme may include LCD for visual display of signal level and battery. For video how work this device watch in http://www.youtube.com/ For more information of this scheme please visit http://www.geotech1.com For order http:// www.crazy-tech.net