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Published on Jun 5, 2018 By Fisher Metal Detectors

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From https://www.detectorprospector.com/forums/topic/5683-fisher-f-pulse-versus-garrett-carrot/?do=findComment&comment=69859 by First Texas engineer Carl Moreland:

“There are 2 software versions, R1 & R2. R1 had a lock-up problem if you turn the unit on while overloaded. R2 fixed that problem, and in the process I added a few new features. Therefore, you need to figure out which version you have as I moved the factory reset from 3 clicks to 2 clicks, should you need that feature. The easy way to tell what version you have is to turn the thing on while a coin is right against the tip; if it locks up, that's R1; if you hear a beep-boop-beep-boop-beep-boop overload jingle, that's R2.

In R2 I slightly extended the default time-out from 2s to 3s. I also added a Turbo-On mode which bypasses the auto-cal procedure and shortens the power-on time to maybe 1/4 seconds. There is a separate Turbo-Off mode which reverses the "off" and "retune" functionality; a quick-press powers down, while a press-hold retunes. If you use both Turbo-On and Turbo-Off, then the F-Tek powers up & down incredibly fast.”

F-Pulse Detailed Instructions Revision 1

F-Pulse Detailed Instructions Revision 2

Only version 2 of the F-Pulse features Turbo Mode. From the Revision 2 instuctions above:

Advanced Features

All advanced features are accessed in the following way:

1. From OFF state, press/hold the button; there is an immediate single audio chirp.
2. After 1⁄2 second, the state of the LED toggles (off-to-on or on-to-off).
3. As soon as the LED flashes immediately release the button, then quick-press the button N times in a row. Each press will be indicated by a short beep. The number of presses “N” determines the feature selected, described below. Further steps are also listed.

N=2: Restore Factory Defaults

This procedure restores all settings to factory defaults:

Response = Beep+Vibe
Sensitivity = 2
Frequency offset = 1
LED = On, 70% TurboOn/TurboOff disabled

4. After 1⁄2 second the LED will begin weirdly flashing, indicating success.
5. Quick-press the button to operate, or press/hold to power down.

N=3: Turbo-On Mode

This procedure toggles the Turbo-On mode. Normally on turn-on the PP executes a calibration routine that optimizes the sensitivity. This can take anywhere from 1⁄2 to 1 second. Turbo-On bypasses the calibration and immediately goes to operation. While much faster, the downside is a slight reduction in sensitivity, and over time hardware “aging” may require occasional calibration (see below). Note: TurboOn also shortens the turn-on response.

4. A short beep indicates completion.
5. Quick-press the button to operate, or press/hold to power down.

N=4: Turbo-Off Mode

This procedure toggles the Turbo-Off mode. Normally to turn off the PP you press/hold the button for about 1⁄2 second, then release. In Turbo-Off mode, only a quick-press of the button is required to turn off. Note: Retune is now based on a press/hold of 1⁄2 second, indicated by a brief chirp. Note: TurboOff also shortens the turn-off response.

4. A short beep indicates completion.
5. Quick-press the button to operate, or press/hold to power down.

N=5: Calibration

This procedure recalibrates the internal DAC which primarily affects turn-on speed in Normal mode, but in TurboOn mode can also optimize sensitivity.

CRITICAL: Keep the PP away from any metal during the cal procedure (including watch/rings on hand).

4. Calibration can take up to 10 seconds; when done, unit will beep 2-3 times.
5. The LED will begin weirdly flashing, indicating success.
6. Press/hold to power down.

N=6: Calibration & Master Reset

This procedure recalibrates the internal DAC which primarily affects turn-on speed. It also executes a factory reset on all settings.

CRITICAL: Keep the PP away from any metal during the cal procedure (including watch/rings on hand).

4. Calibration can take up to 10 seconds; when done, unit will beep 2-3 times.
5. The LED will begin weirdly flashing, indicating success.
6. Press/hold to power down.

 

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"As soon as the LED flashes immediately release the button, then quick-press the button N times in a row."

Thank you. Does the flash occur when the LED goes on or off, it a second or two after?

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It's amazing I called Fisher for clarification and Technical support and they kept stating to me there was no such thing as a turbo mode.

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I would go through the instructions myself with my pinpointer to see if I could tell you but my older version does not have Turbo Mode. Looks like Carl needs to let the folks at the front desk know about the secret features he is slipping in! :smile:

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Steve, I figured out I have version 2. I got it in and out of turbo mode. It was just not an easy task. Still not sure exactly how I did it. Thanks for your help

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