Settings For The Pulse Length - JRC JFS-280 Instruction Manual

Operating Procedure
Press the [MULTI] knob to open the submenu.
Turn the [MULTI] knob to select "1. TX POWER".
5
Press the [MULTI] knob to confirm the selection.
Be aware that by setting the "TX POWER" to 0, transmissions are not output.
For normal operations, use the TX POWER setting at 10.

5.2.2.2 Settings for the Pulse Length

You can set the pulse length of transmission waves. Decrease this value to shorten pulse
length. Increase this value to lengthen it.
By shortening the pulse length, you can improve resolution for directional distance; however,
the stability of detection performance and images worsens. By lengthening the pulse length,
you worsen resolution for directional distance; however, the stability of detection performance
and images improves. The initial value is set to 10. Adjust and use according to the types of
fish and the conditions of the sea.
Pulse length automatically worsens due to the sonar range that is used. However, the
maximum values for the sonar range can be limited by this setting value. The pulse length
setting range is set between 1 and 20.
5 Adjusting How Images Appear
Press the keys "7 → 2 → 1" to go to TX POWER settings
Press the [MENU] key to display the menus.
Turn the [MULTI] knob to move to "7. FISH IMAGE".
Press the [MULTI] knob to open the submenu.
Turn the [MULTI] knob to move to "2. TX".
Turn the [MULTI] knob to adjust.
The setting range for "TX POWER" is 0 to 10, and can
be set in steps of 1.
5-10