La Crosse WT-3129B User Manual

Model: WT-3129B www.lacrossetechnology.com/support Page | 1
Model: WT-3129B
Instruction Manual
DC: 072115
12” Atomic Wall Clock
Get Started
Step 1: Slide the switch to select a time zone.
Step 2: Insert 1 fresh AA, Alkaline battery according to the
polarity marked on the case.
Step 3: For the best reception, please place clock on a wall that
faces Ft. Collins, Colorado. During the night, your clock
will automatically set itself.
 When the battery is installed, the hands will move to the 12:00
position and search for the radio signal.
 If the radio signal is not received in the first 10 minutes, the
clock will start running from the 12:00 position and will
continue to run.
 Do not attempt to reset the hands manually even though the
time on the clock is incorrect. The clock is synchronizing to
the WWVB signal and once the radio signal is decoded, the
hands will automatically adjust to the correct time. This may
take up to 5 nights if there is atmospheric interference.
Reset: If the clock does not respond to the various function
modes, press the RESET button on the movement case.

La Crosse WT-3129B Specifications

General

Brand	La Crosse
Model	WT-3129B
Category	Watch
Language	English

Summary

Get Started

Initial Setup Steps

Instructions for setting up the atomic clock, including time zone selection and battery installation.

Automatic Time Setting Behavior

Details on how the clock's hands move to 12:00 and search for the WWVB signal automatically.

Resetting the Clock

Procedure for resetting the clock if it does not respond to function modes, using the movement case button.

Position Clock for Best Reception

Optimal Wall Placement

Place clock on a wall facing Ft. Collins, Colorado, with one wall or window between clock and outside.

Location Interference

Avoid placing clock near electronics like phones, TVs, microwaves, or routers to prevent signal interference.

Building Material Interference

Large buildings, schools, hospitals, or structures with metal roofs may affect WWVB signal reception.

Manual Set Time Procedure

Manual Time Setting Instructions

Steps to manually set the clock when radio control is not possible, using the SET button to advance the minute hand.

Troubleshooting Common Issues

Signal Reception Factors

Troubleshooting common issues like battery, location, weather, and hands spinning due to signal or power.

Daylight Saving Time

DST Automatic Adjustment

Clock automatically adjusts for DST based on WWVB transmission. Switch ON/OFF if DST is not recognized.

Manual WWVB Time Signal Search

Initiating Signal Search

Hold WAVE button for 3+ seconds to reset hands to 12:00 and search for the WWVB time signal.

Manual Time Setting Override

Manually setting the clock allows the micro-CPU to control timekeeping if WWVB signal is not received.

Care and Maintenance Guidelines

Battery Handling

Use fresh, correct type/grade batteries, replace all at once, ensure correct polarity, and remove for storage.

Cleaning and Installation

Clean battery contacts before installation and ensure correct polarity (+/-) for battery installation.

Warranty and Support Information

Product Warranty Details

Provides 1-year limited warranty against manufacturing defects. Contact customer support for assistance.

Online Support Resources

Access product support, registration, and full warranty details via the La Crosse Technology website.