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Pub. 988-0064-351
LST-3800
In-Dash Digital Sonar Gauge
Installation & Operation Instructions
The LST-3800 is a depth and temperature gauge that comes with a 200
kHz transducer, features deep and shallow alarms and has three main
page displays. It can show depth in Meters or Feet, temperature in Fahr-
enheit or Celsius and its display may be set to rotate between Tempera-
ture, Depth or Dual display pages. The unit fits in a standard 2-1/8" (54
mm) hole used by most marine equipment manufacturers.
The 3800 is designed to display water depth and surface water tempera-
ture, but you MUST have a transducer with built-in temp sensor to re-
ceive temperature information.
LST-3800 temperature gauge.
Mounting Preparations
When installed, the gauge's bezel will cover a circular area at least 2-1/2"
(64 mm) wide on the front of the dash. To mount the unit, make sure
there is at least 4-1/8" (105 mm) from the front of the dash to any ob-
struction behind the dash. The maximum usable dash thickness is 1-1/8"
(28.5 mm). Also, make certain there is room to route the unit's cables.
The following figure shows gauge dimensions.
1
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Table of Contents
Related Manuals for Lowrance LST-3800
Summary of Contents for Lowrance LST-3800
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Page 1: Mounting Preparations
In-Dash Digital Sonar Gauge Installation & Operation Instructions The LST-3800 is a depth and temperature gauge that comes with a 200 kHz transducer, features deep and shallow alarms and has three main page displays. It can show depth in Meters or Feet, temperature in Fahr- enheit or Celsius and its display may be set to rotate between Tempera- ture, Depth or Dual display pages. - Page 2 Dash Gasket 2-1/2" (64 mm) Dash installation, cross-section view. Caution: You should read over the entire installation section before drilling any holes in your vessel! You can install this gauge in some other order if you prefer, but we rec- ommend the installation sequence summarized below: 1.
- Page 3 Slide the cables through the hole from the front side of the dash, then push the LST-3800 housing through the hole until it is flush with the dash surface. Make sure the gauge is aligned correctly.
- Page 4 Black wire This wire configuration lets you turn off the gauge when it's not in use. LST black wire to buzzer black wire Transducer LST-3800 cable connections. Red wire 12 volt and fuse battery Buzzer red wire to boat power...
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Page 5: Operation
The unit won't be harmed if the power wires are connected backwards, but it won't work until they are connected correctly. NOTE The LST-3800 comes with a 200 kHz transducer. For installation in- structions, download Installation Instructions for Skimmer Transduc- ers from the Lowrance web site, www.lowrance.com. part number, 988-0147-582, at www.lowrance.com. - Page 6 Timeout There is no exit key in the LST 3800. The menus "time out" instead. That means they automatically close after a preset amount of time. When you install the gauge, the default timeout duration is 5 seconds. You can modify the setting by pressing IMEOUT...
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Page 7: Auto Scroll
Depth Page The Depth Page displays water depth readings taken by the 200 kHz transducer packed with the LST-3800. For transducer installation instructions, see Installation Instructions for Skimmer Transducers, part number, 988-0147-582. Temperature Page The Temperature Page monitors surface water temperature via a tem- perature sensor built into your 200 kHz transducer. -
Page 8: Up And Down
Backlight Once in the Backlight menu, use the five brightness levels, wires are connected, the backlight will come on when with the rest of the dash lights are turned on. See wiring options on pages 4. To control the backlight manually, check or uncheck the pressing in the Backlight internal menu. - Page 9 alarm menu into the center square. Press to access the alarm MENU menu, then use the keys to set the alarm to the desired DOWN depth. Set Units The Set Units menu allows you to switch the units of measure for tem- perature and depth from (°F) AHRENHEIT...
- Page 10 Notes...
- Page 11 LOWRANCE ELECTRONICS FULL ONE-YEAR WARRANTY "We," "our," or "us" refers to LOWRANCE ELECTRONICS, INC., the manufacturer of this product. "You" or "your" refers to the first person who purchases this product as a consumer item for personal, family or household use.
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Page 12: Accessory Ordering Information
800-324-1356. 8 a.m. to 5 p.m. Central Standard Time, M-F Lowrance Electronics may find it necessary to change or end our shipping policies, regu- lations and special offers at any time. We reserve the right to do so without notice.