Koden ESR-145, Руководство по эксплуатации

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3-8
FUNCTION SETTINGS
4. PULSE WIDTH
The transmitted pulse width can be set.
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The transmitted pulse can be set to these three (narrow, normal, wide), where the
optimum setting will be applied according to the range automatically.
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Or it can be set manually, if a specific pulse width (0.3 to 3.6 msec) is required.
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Each press of [ ← ] or [ → ] key changes the setting, "NARROW, NORMAL, WIDE, 0.3ms."
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Select the desired value.
NORMAL : Setting NORMAL changes automatically according to the range.
NARROW : When the searching range is short and higher resolution is required,
the pulse width should be set NARROW.
WIDE : The longer range gives less resolution.
CONSTANT : The initial value of the pulse width is 0.3 ms. The pulse width is to
be set every 0.1 ms unit from 0.3 to 3.6 ms.
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Use [ ↑ ] key to select the larger value.
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Use [ ↓ ] key to select the smaller value.
NOTE !---------------------------------------------------------------------------------------------------------
In actual practice, the shorter pulse (narrower) gives better resolution, and
Less noise in shallow water or surface scanning. The longer pulse (wider)
will reach deeper but give less resolutions.
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5. TX POWER
The output power of the ultrasonic sound wave may be selected.
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In crowded fishing areas, this function may be used to reduce power and avoid
interference to other Fishing boat's Sonars and Echo Sounders.
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Each press of [ ← ] or [ → ] key change the setting, "LOW or HIGH."
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Select the desired level of the transmitting power.