Cubic 156-PMD Operation Manual

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OPERATION MANUAL

For

MINE DETECTING SET ;

METALLIC AND NONMETALLIC

MODEL 156-PMD

C U B I C C 0 R PO RAT I 0 N

May 1983

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Summary of Contents for Cubic 156-PMD

Page 1 OPERATION MANUAL MINE DETECTING SET ; METALLIC AND NONMETALLIC MODEL 156-PMD C U B I C C 0 R PO RAT I 0 N May 1983...
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Page 3: Table Of Contents
TABLE CONTENTS Page Section 1. DESCRIPTION AND DATA 1-2. Tabulated Data 2- 1 Section ASSEMBLY AND DISASSEMBLY 2- 1 2-2. Preliminary Adjustment and Initial Checkout 2-3. Disassembly and Repacking 3- 1 Section 111. OPERATION 3-1 Operation with More than One Mine Detector 3-2 Operating Procedure to Search an Area Investigation of Initial Alarms (Chirps) 3-4 Stopping...
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Page 5: Section 1. Description And Data
Section I. DESCRIPTION AND DATA a. General Information. The Mine Detecting Set, Model 156-PMD, shown in figure 1-1 consists of a mine detector, carrying case, carrying strap, one battery pack for use in the mine detector, and one spare battery pack. These components are described in the following paragraphs.
Page 6 CARRYING CASE (TOP Figure Detecting Set, Model...
Page 7 S E A R C H SHORT HANDLE SHORT HANDLE TRANSMITTER- EWER HOUSIN CARRYING...
Page 8 Control Box Assembly. The control box assembly contains the processor module with its associated electronic components and the battery pack. The control box housing is an aluminum water-tight enclosure. A gasketed steel cover secured by four latches seals the control box. The control box mounts the onloff switch, the cable to the search head, and the headset assembly.
Page 9: Tabulated Data
-30 "C to +50 "C (-25 "F Temperature Range (storage) -55°C to +70"C (-65°F to +155"F) Battery Complement Battery pack, Cubic P/N 171 01 3, containing five replaceable standard C-size alkaline batteries. or: Rechargeable sealed lead-acid battery, Cubic PIN B-l56A.
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Page 11: Assembly And Disassembly
Section II. ASSEMBLY AND DISASSEMBLY a. General. (1) To a large extent, the mine detector, as contained in the carrying case, is pre-assembled as shown in figure 2-1. The short handle is attached to the search head, as is the control box to the long handle. (2) Remove the following items from the carrying case: The search head with short handle attached, the long handle with control box attached, and one of the batteries provided with the equipment.
Page 13 TEST CONNECTOR Figure Control Box Removed) (Covet...
Page 14: Preliminary Adjustment And Initial Checkout
Handle and Carrying Strap. (1) Long handle Attachment. Attach the long handle to the short handle by means of the quick-disconnect bayonet coupling. Engage and compress spring-loaded coupling and twist 114 turn clockwise. (2) Carrying Strap Attachment. The carrying strap assembly is comprised of a long strap and a short strap.
Page 16 (2) With the search head resting on the ground, move the short handle the angle desired, against the friction produced by the friction clutch. (3) When using the carrying strap for operation in the standing position, adjust the length of the carrying strap to a comfortable length that will not restrict the required swinging motion.
Page 17: Disassembly And Repacking
Disassembly and Repacking. To disassemble the equipment for storage in the carrying case proceed as fo I I ows : (1) If the carrying strap is attached, unhook it at top and bottom. (2) Collapse the long handle, using the same procedure as for handle extension but in reverse order, i.e.
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Page 19: Section 111. Operation
Section 111. OPERATION WARNING At all times during operation clicks should be heard in the headset, either at metronome rate or higher. If clicks disappear, stop operation immediately, as the mine detector is no longer operating due to low battery voltage or possible equipment failure.
Page 20: Operating Procedure To Search An Area
Operating Procedure to Search an Area. CAUTION operation by setting the switch to the ON position while movement for about thirty seconds. After this time, any switchover from search to point mode, as indicated by a higher click rate. Set the switch to the OFF position and Proceed as described in following paragraphs.
Page 21 BURIED...
Page 22: Investigation Of Initial Alarms (Chirps)
NOTE: At each end point, a distance of about 6 inches ( 15cm) is blanked out. This feature prevents alarms caused by tilting of the search head at the sweep reversals, observed as a natural tendency in most operators. d. A sudden short-duration increase of the click rate (chirp) followed by a lower click rate (anywhere between 3 and 150 clicks per second) indicates an initial alarm and simultaneous automatic switchover to the POINT mode, when the search head is swept over an anomaly in the soil, such as at point A in figure 3-1.
Page 23 c. When a chirp is obtained, it does not always indicate the presence of a mine, but could also be caused by tilting the search head, touching the ground or a clump of wet high grass with the search head, passing over an area with ruts or ridges on the surface, or by sudden variation of soil moisture or consistency.
Page 24: Stopping
f. Occasionally an area is encountered where it is difficult to keep the mine detector in the SEARCH mode, that is, as soon as a sweep, is started following the automatic reset to SEARCH mode, a chirp is heard again. This could be due to a sudden change in soil characteristics and can be countered as follows: Step back about 3 feet (1 m) into the area previously cleared and set the switch to the OFF position.
Page 25: Section Iv. Maintenance
When damage to the equipment is noted or operation cannot be restored with a known good battery report the discrepancy to the proper authority. 4-2 Repair For repair or replacement of the parts and components of the mine detecting set by authorized maintenance personnel refer to the Maintenance Manual MM/156-PMD. 4- I...