Humminbird 400TX manual

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It is not possible to use Zoom in conjunction with the Large Digital

View.

To disable Zoom, press the MENU button until the Zoom menu is on- screen. Use the UP ARROW to highlight Off, and let the menu time out.

When the unit is powered off, the Zoom menu returns to Zoom Off.

Depth Alarm. The 400TX contains an audible alarm to warn you of shallow water depths. The alarm is adjustable to depths of 2' (.6m) to 99' (30m). When the alarm is enabled, an audible alarm sounds if the water beneath the boat is equal to or less than the selected alarm depth. The alarm sounds continuously for about five seconds, and then intermittently to remind you that you are still in shallow water. Additionally, the 400TX can anticipate quickly changing terrain and sound the Depth Alarm before the bottom depth actually reaches the preset alarm depth.

Fish Alarm. The Fish Alarm alerts you to the presence of fish, or other targets not connected to the bottom. The Fish Alarm has three different settings that correspond

to the three different size fish symbols shown onscreen.

The default setting is "OFF." With the "Large fish only" setting, the 400TX alarms on only those targets that are represented by the large fish symbols. The 400TX can be set to alarm on only large and medium fish, or set to alarm on all fish.

Once the Fish Alarm is enabled, the 400TX emits an audible beep when the selected size fish symbol appears on-screen. The sound is slightly different for each of the three fish symbol sizes, so with practice, it is possible to distinguish the size of the detected fish without looking at the unit.

Fish Alarm settings are remembered when the unit is powered off.

Triplog. Triplog provides a running log of information based on input from the Temp/Speed sensor.

Since Triplog requires information from the Temp/Speed sensor to operate, if this sensor is not detected by the 400TX, the Triplog menu will not appear as an option.

Triplog provides four pieces of information: the total time elapsed since power-up or reset, the distance traveled since the 400TX was powered up or reset, the average speed, and the input voltage from your boat's electrical system.

The time, speed and distance calculations are useful for tracking your progress on a trip. The input voltage is useful for determining the

condition of the charging system of the boat. When used in a portable application or whenever the 400TX is operated from a battery source, the voltage number can be used to determine battery life. The 400TX will operate at voltages from 10 to 20 VDC. Voltages in excess of 20 or less than 10 VDC cause the unit to power off. The Triplog resets at power off.