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Operating Procedure to Search an Area. 

CAUTION 

prior to each use of the mine detector, check its 

operation by setting the switch to the ON position 

the search head to rest on the ground with no 

movement for about thirty seconds. After this time, any 

movement of the search head 

cause a 

switchover from search to point mode, as indicated by a 

higher 

rate. Set the switch to the OFF position and 

Proceed as described in 

paragraphs. 

a. 

the search head at a height of 

3 inches 

above the ground over homogenous 

(free from known 

such as 

tree roots; ruts, mounds, etc.) set the switch from OFF to 

ON. 

This action not 

power to the equipment, but 

starts the 

period used by the 

processor to form an estimate of the background 

and background 

va ria tions , 

based on the 

returned from the 

soil. 

be heard 

in 

the headset at 

of 

2.5 

seconds, 

indicating the system is operating in the SEARCH mode. These 

function as 


metronome and 

make it easy to sweep the search head at the optimum sweep rate 

by synchronizing sweep direction 

with the 

(See figure 3-1 .) 

c. 

keeping the search head 

3 inches 

above the 

ground, depending upon the surface condition of the terrain, sweep the search head 
from side to side at a sweep rate such as to make each change of sweep direction 

(sweep end points) coincide with a metronome 

(Sweep rate is 

feet 

in 2.5 seconds). With each sweep, advance a distance 

of 

no more than 4 

inches 

cm) or about 

the width of the search head. (See figure 3-1 .) Ensure that 

the search head is 

to the ground at 

times as 

the search head 

produce a 

to a mine 

Operation in the prone position is the same, 

except the sweep rate is 

3.5 to 4 feet (1 to 

in 2.5 seconds. 

3-2 

Summary of Contents for 156-PMD

Page 1: ...OMII56 PMD OPERATION MANUAL For MINE DETECTING SET METALLIC AND NONMETALLIC CUBIC C0RPORATI0N MODEL 156 PMD 3 May 1983...

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Page 3: ...iminaryAdjustment and Initial Checkout 2 3 Disassemblyand Repacking Section 111 OPERATION 3 1 Operationwith More than One Mine Detector 3 2 Operating Procedure to Search an Area 3 3 Investigation of I...

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Page 5: ...e In addition a transmitter and a receiver are mounted in a housing on the search head A rubber bumper is mounted around the search head as a protectivedevice The search head assembly generates and ra...

Page 6: ...CARRYING CASE TOP W CARWING SrzzAp Figure 1 1 Mine Detecting Set Model I56 PMD 1 2...

Page 7: ...SEARCH n m D 1 SHORT HANDLE SHORT HANDLE EWER HOUSIN CONTaOL Box CARRYING STBAP I TRANSMITTER RECEIVER HOUSING Figure 1 2 Mine Dete aor Assembled...

Page 8: ...eadset assembly consists of two earphones joined by an adjustable stainless steel headband and a headset cable Rubber ear cushions are fastened over the two earphones to cut out extraneous noise and m...

Page 9: ...mperature Range operating Temperature Range storage 30 C to 50 C 25 F to 125 OF 55 C to 70 C 65 F to 155 F Battery Complement Battery pack Cubic P N 171013 containing five replaceable standard C size...

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Page 11: ...x with the snap terminals up Note arrangement of the snaps on battery plug and snap the plug onto the battery pack accordingly See figure 2 2 Replacecover on control box check for proper alignment and...

Page 12: ...d n E 2 2...

Page 13: ...TEST CONNECTOR fWith Shorting Plug Installed 1 Figure 2 2 Control Box Covet Removed 2 3...

Page 14: ...tachment eye at the top of the long handle See figure 1 2 d Headset Put on the headsetwith the headbandforward Adjust headbandso that the rubber ear cushions press against the ears with just enough pr...

Page 15: ...0 i 0 i t I I c 2 5...

Page 16: ...to the POINT mode indicated by a sudden change in click rate between 3 and 150clicks per second 3 Moving the search head away from the ground the systemwill automatically resetto the SEARCH mode with...

Page 17: ...estdiameter 3 Detach long handle from the short handle by pushing down and twisting 4 Remove the battery pack from the control box See paragraph 2 1 b the coupling 1 4 turn counterclockwise 5 Place ea...

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Page 19: ...ator should have a minimum of two hours per week m test bed operation when he is not operating regularly in combat conditions The test bed should contain at least one dummy target such as an empty woo...

Page 20: ...ons based on the signals returnedfrom the soil b A click should be heard in the headset at intervals of 2 5 seconds indicatingthe system is operating in the SEARCH mode These clicks also function as a...

Page 21: ...ME AT BURIED POINT OF STARTING P o m d eFeet Sm lc I I 1 I 1 ENDPOINT I 3 3...

Page 22: ...asses over the edge of the buried object The click rate response sounds similar to a Geiger Counter The click rate will decrease when the search head is centered over the object and will increase agai...

Page 23: ...ted by slowly moving the search head over the area surrounding the clump of grass while in POINT mode A repeatable increase in click rate indicates a probable mine Passing the search head over surface...

Page 24: ...t the switch to the OFF position Then set the switch to the ON position following the standard search procedures described in paragraph 3 2 and sweep the area again If an area without visible anomalie...

Page 25: ...aning of all components of the mine detecting set before and after each use to ensure availability of the equipment when needed and to prolong its useful life When damage to the equipment is noted or...

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