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Version 1.0  

 

©Copyright 2015, Ambient LLC. All Rights Reserved. 

 

 

 

Page 2 

 

 

1

 

Introduction 

Thank  you  for  your  purchase  of  the  Ambient  Weather  Radio  Controlled  Analog  Wall  Clock.  The 
following  user  guide  provides  step  by  step  instructions  for  operation  and  troubleshooting.  To 
download the latest manual and additional troubleshooting tips, please visit: 
 

http://ambientweather.wikispaces.com/rc1250ch

 

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Quick Start Guide 

 

1.

 

Set Time Zone and Daylight Savings Time switch (Section 7). 

2.

 

Insert the battery. 

3.

 

Hang the clock on the wall. 

4.

 

Wait 24-48 hours for the correct time to set. 

 

3

 

Overview 

The  radio  controlled  wall  clock  (RCC)  updates  time  and  date  automatically  using  a  radio  receiver 
from the atomic time transmitted from Fort Collins, CO, USA (WWVB). 
 
This signal is shortwave, and travels thousands of miles by bouncing off of the ionosphere. The signal 
is best received at night when there is no solar interference. 
 
The  radio  controlled clock never requires setting,  and automatically  adjusts to  daylight savings time 
(DST). This feature can be overridden for locations that do not observe DST (examples, Arizona and 
Hawaii). 
 
Features include: 

 

Noise free second hand 

 

Hour, minute and second hands 

 

Automatic daylight savings time update and leap year observation 

 

Four time zone settings (Pacific, Mountain, Central, Eastern) 

 

Long battery life 

 

The radio controlled reception is attempted every two hours, and generally is successful at night. Just 
one successful synchronization per day is sufficient to accurately set the clock to the second. 

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Important Notes 

Before using this product, please read the following :

 

1.

 

Read these instructions – All operating instructions should be read before the unit is operated. 

2.

 

Operate and store in a dry location.    Do not operate outside. 

3.

 

The product must be protected against electromagnetic fields, static electrical fields, extreme 
temperatures, and moisture. 

4.

 

Clean only with soft damp cloth. 

5.

 

Do not use near any heat sources such as radiators, heat registers, stoves, or other device 
(including amplifiers) that produce heat. 

Summary of Contents for RC-1250CH

Page 1: ...ion 2 2 Overview 2 3 Important Notes 2 4 Installation 3 5 Controls 3 6 Battery Installation and Initial Operation 4 7 Mechanical Deviation Adjustment 4 8 Setting the Time Manually 4 9 Forced Radio Resynchronization 5 10 Maintenance 5 11 Specifications 5 12 Glossary of Terms 5 13 Troubleshooting Guide 6 14 Liability Disclaimer 6 15 Warranty Information 7 16 Disposal 7 ...

Page 2: ...trolled clock never requires setting and automatically adjusts to daylight savings time DST This feature can be overridden for locations that do not observe DST examples Arizona and Hawaii Features include Noise free second hand Hour minute and second hands Automatic daylight savings time update and leap year observation Four time zone settings Pacific Mountain Central Eastern Long battery life Th...

Page 3: ...attery electrolyte in the cells should get on your skin thoroughly wash with soap and water If in the eyes rinse thoroughly with cool water Immediately seek medical attention 2 Leaking or damaged batteries might cause acid burns when in contact with skin therefore use suitable protective gloves to handle corrupted batteries 3 Correct polarity must be observed while inserting the batteries 4 Batter...

Page 4: ...not receive the signal from the atomic clock very likely during the daytime the clock will begin running from the 12 00 position until the time synchronization is successful The clock will attempt synchronization every two hours 1 00 3 00 5 00 7 00 9 00 11 00 13 00 15 00 17 00 19 00 and 21 00 During synchronization the second hand will operate properly 8 Mechanical Deviation Adjustment During norm...

Page 5: ...enance free but should be cleaned occasionally Only use a slightly dampened and soft cloth to clean the housing Do not use abrasives or solvents 12Specifications Operating Voltage 1 5 Vdc Battery 1 x AA Battery Life About 1 year high quality batteries Radio controlled time protocol WWVB USA Dimensions Approximately 12 5 13Glossary of Terms Term Definition DST Daylight saving time DST or summer tim...

Page 6: ...or outer wall and away from other radiating sources like wireless routers or TVs This will insure the best reception possible Replace the batteries in the clock if required Low batteries are often the cause for weak reception Check your Time Zone Setting Make sure your time zone is set properly in the clock settings Avoid closed in areas Closed in areas such as basements are not recommended The cl...

Page 7: ...nt LLC will replace this product with new or reconditioned parts or products if found to be defective during the limited warranty period specified above Replacement parts and products assume the remaining original warranty or ninety 90 days whichever is longer The owner must pay any shipping charges incurred in getting your Ambient LLC product to a Ambient LLC for replacement or repair Ambient LLC...

Page 8: ...Version 1 0 Copyright 2015 Ambient LLC All Rights Reserved Page 8 ...

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