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Version 1.2  

 

©Copyright 2016, Ambient LLC. All Rights Reserved. 

 

 

 

Page 5 

 

2.

 

On  the  back  of  the  housing,  insert  one  AA  battery,  observing  the  correct  polarity.    The 
correct polarity is indicated in the battery compartment.   
Replace the cover by rotating clockwise, as shown in Figure 1. 

3.

 

The second hand will run and stop at the 12:00 o’clock position, followed by the minute hand 
and  hour  hand  aligning  to  the  12:00  o’clock  position.  This  confirms  the  clock  hands  are 
operating properly. 

4.

 

The  clock attempts to  synchronize with the atomic clock  for  10  minutes.  If it  synchronizes, 
the  clock  sets  properly.  If  it  does  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  at  the  following  times:  2:16:00,  4:16:00,  14:16:00, 
and 16:16:00. During synchronization, the second hand may stop until the time is correct. 

8

 

Mechanical Deviation Adjustment 

During normal operation, the second hand will resynchronize at 9:30 for two minutes to account for 
mechanical  deviation.  The  resynchronization  occurs  for  two  minutes,  and  makes  the  proper  second 
hand adjustment. 
 
During normal operation, the minute hand will resynchronize from 11:51 to 11:54. If the minute hand 
deviates within two minutes, it will automatically adjust. If the minute deviates more than two minutes, 
the clock hands will attempt resynchronization. 

9

 

Setting the Time Manually 

If reception is not available, the clock date and time can be set manually. 
 
To set manually, press and hold the 

M. SET

 button (Figure 2) for three seconds, and the clock second 

hand will stop and enter the manual mode.   
 
Next, press and hold the 

M. SET

 button again until the time is set to the current time. 

 
The clock will begin updating again after the 

M. SET

 button has not been pressed for 6 seconds. 

 
The  clock  will  attempt  synchronization  at  the  following  times:  2:16:00,  4:16:00,  14:16:00,  and 
16:16:00. 

10

 

Forced Radio Resynchronization 

To force resynchronization from the atomic clock, press and hold the 

REC

 button for 3 seconds. The 

second hand will stop.   
 
The clock attempts to synchronize with the atomic clock for 10 minutes. If it synchronizes, the clock 
sets properly. If it does not receive the signal from the atomic clock (very likely during the daytime), 
the clock will begin running until the time synchronization is successful. 
 
The  clock  will  attempt  synchronization  at  the  following  times:  2:16:00,  4:16:00,  14:16:00,  and 
16:16:00. 

Summary of Contents for RC-1800WSTH

Page 1: ...k Start Guide 2 3 Overview 2 4 Important Notes 2 5 Installation 3 6 Controls 3 7 Battery Installation and Initial Operation 4 8 Mechanical Deviation Adjustment 5 9 Setting the Time Manually 5 10 Forced Radio Resynchronization 5 11 Temperature and Humidity Sensors 6 12 Maintenance 6 13 Specifications 6 14 Glossary of Terms 7 15 Troubleshooting Guide 7 16 Liability Disclaimer 8 17 Warranty Informati...

Page 2: ... 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 example Arizona Features include Hour minute and second hands Automatic daylight savings time update and leap year observation Four time zone settings Pacific Mountain Cen...

Page 3: ...rotective gloves to handle corrupted batteries 3 Correct polarity must be observed while inserting the batteries 4 Batteries should be removed from the device if not used for a long period of time to avoid damage through leaking 5 Keep batteries out of reach of children Batteries can be swallowed and represent a choking hazard 6 Batteries must not be dismantled short circuited or thrown into fire ...

Page 4: ...ain C Central E Eastern 3 AA Battery Compartment 7 Daylight Savings Time Observation OFF for Arizona 4 Manual Clock Set Same as 8 8 Manual Clock Set Same as 4 Figure 2 7 Battery Installation and Initial Operation 1 Reference Figure 2 Enter the Time Zone and Daylight Savings Time DST as outlined in Table 1 Cities Time Zone Hours from GMT Daylight Savings Time DST 1 Pacific Time P 8 ON 2 Mountain Ti...

Page 5: ...utes and makes the proper second hand adjustment During normal operation the minute hand will resynchronize from 11 51 to 11 54 If the minute hand deviates within two minutes it will automatically adjust If the minute deviates more than two minutes the clock hands will attempt resynchronization 9 Setting the Time Manually If reception is not available the clock date and time can be set manually To...

Page 6: ...ure accurate temperature and humidity Figure 3 12Maintenance The device is maintenance free but should be cleaned occasionally Only use a slightly dampened and soft cloth to clean the housing Do not use abrasives or solvents 13Specifications 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 18 ...

Page 7: ...lled clock is a clock that is synchronized by a time code bit stream transmitted by a radio transmitter connected to a time standard such as an atomic clock WWVB WWVB is a NIST time signal radio station near Fort Collins Colorado WWVB is the station that radio controlled clocks in most of North America use to synchronize themselves The 70 kW ERP signal transmitted from WWVB is a continuous 60 kHz ...

Page 8: ...e your time zone is set properly in the clock settings Avoid closed in areas Closed in areas such as basements are not recommended The clock is off by increments of an hour Check your Time Zone and DST Settings Make sure your time zone and DST switches are set properly The clock does not respond to commands Remove and replace the battery 16Liability Disclaimer Reading the User manual is highly rec...

Page 9: ... 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 will pay reasonable return shipping charges to the owner of the product Your Ambient LLC warranty covers all defects in material and workmanship with the following specified...

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