Fisher 1236-X2 warranty Searching

SEARCHING

Now comes the fun part if you follow a few simple rules. Good search techniques are every bit as important as a good detector.

1.The 1236-X2 has two operating modes. The “Search” mode is activated simply by turning the unit on. This is a “VLF-Motion Discrimination” mode that automatically ignores most ground minerals, rejects junk and works only when the search coil is moving. The “PINPOINT” mode is activated by depressing the PINPOINT button and will be explained later.

2.Set the FREQUENCY control at zero.

3.Adjust your SENSITIVITY control. Only experience will tell you how much sensitivity to use in any given situation, but start out at 8.

NOTE: As a general rule, turn your sensitivity down to reduce excessive false signals caused by highly mineralized ground or interference caused by power lines, radio stations, etc. Turn it up if you want those deepest, smallest targets and you’re willing to put up with a few more false signals.

4.Decide how much discrimination you want to use. a. In relatively non-trashy soil use a low level of discrimination (2 for example) with the SILENCER OFF. In this manner the 1236-X2 will detect all metal targets

Figure 7. Keep the search coil parallel and as close to the ground as possible.

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SEARCHING

within its range and you can instantly increase the discrimination for further identification.

b. In trashy areas you’ll probably want to operate at a higher level of discrimination (6 for example) with the SILENCER switched ON to cut down on the amount of time you spend digging bad targets.

5.Keep the search coil moving at a comfortable rate. Remember that the 1236-X2 is a motion detector and responds only when the search coil (or the target) is moving while in the Search mode.

6.Keep the coil parallel to, and as close to the ground as possible. Keep the search coil parallel to, and as close to the ground as possible.

7.Overlap your sweeps approximately 50 percent.

8.Search in a methodical manner, sweeping in a tight semicircle. Pay close attention to where you’re going and where you’ve been.

9.TAKE YOUR TIME. Also very important. If you walk too fast you can’t overlap your sweeps and you’ll miss a lot of ground.

NOTE: If you sweep too fast, you’ll lose sensitivity and miss the deep targets.

10.The figure below shows the search coil detection pattern and how it is affected by sweep speed, discrimination level and overlapping sweeps in the Search mode.

Figure 8. The 1236-X2 is balanced for sweeping in a tight semicircle. Always overlap your sweeps by at least 50% or you’ll miss a lot of the deeper targets

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1236x2 manual-8704810.indd 14 6/9/06 10:09:00 AM