Fisher 1270 Controls & Functions, On / Off Volume On /Off Volume, Normal Disc, Iron Disc Adjust

CONTROLS & FUNCTIONS

1. ON / OFF VOLUME: ON /OFF VOLUME:

Allows you turn on the 1270 and adjust the volume to a comfortable level. No need to have a special headphone with volume controls. Turning this control clockwise adjusts the volume.

2. NORMAL DISC:

When operating in NORMAL DISC mode, this control gives you the ability to adjust the rejection point of the 1270 to a wide range of metal objects. At lower settings, the 1270 will reject most ferrous and low-conductivity metal objects. At higher settings, more high-conductivity metal objects will be rejected. At maximum (10), all targets except silver and copper should be rejected. This is the “primary” mode when both the ALL-METAL GROUND ADJ. control and the IRON switch are OFF.

3. ALL METAL GROUND ADJUST:

Turning this control clockwise, out of its OFF position (0), allows you to operate in the All-Metal mode and adjust the 1270 to compensate for vari- ous ground mineral conditions. In this All-Metal mode, all DISC mode control settings will be ignored, but can be momentarily re-engaged with- out changing the GROUND setting by pushing the MODE TRIGGER switch forward (the DISC mode engaged will be the one that is presently set on the panel controls). Turning the GROUND ADJ. control fully counter- clockwise into its OFF position will return the unit to the DISC mode set on the panel controls.

4. IRON DISC ADJUST:

When operating in the IRON DISC mode, this control provides an expanded discrimination range to fine-tune the rejection point of most small iron objects (used in conjunction with the IRON switch). This is the “primary” mode when the IRON switch is ON, and the ALL-METAL GROUND ADJ. control is OFF

5. HEADPHONE JACK:

Accepts most stereo headphones with 1/4" diameter plugs. When headphones are used, the speaker is disconnected. Headphones are beneficial when hunt- ing in noisy areas. Faint and deeper signals will be heard better.

6. SENSITIVITY:

This control adjusts the sensitivity level and scan width of the 1270. Turn- ing the control clockwise increases the sensitivity to weak target signals (from deeply buried or small metal objects). A low audio threshold is pro- vided at higher settings to allow monitoring of weak threshold variations resulting from deeply buried objects. Reducing the sensitivity is necessary at times to reduce false signals when working in areas of high trash, highly mineralized ground, electrical interference, or near large metal objects, such as buildings, fences, or bleachers

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