Sima Products RCW-101 Watch User Manual

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DIGITAL RADIO

CONTROLLED WATCH

INTRODUCTION

Congratulations on your purchase of the

Sima RCW. Before you begin using the

RCW, please read this manual carefully and

keep this manual for further information.

ABOUT NIST

The RCW utilizes a highly sensitive radio

receiver to automatically set the time and

date. The National Institute of Standards

and Technology (NIST) measures each

second of time as 9,192,631,770 vibrations

of a Cesium 133 atom in a vacuum. The

measurement of the Cesium 133 atom is

accurate to one second every one million

years. The time is then transmitted from

Fort Collins, CO to the rest of the United

States (US). NIST is the official time used

by the US; it governs ship movements,

radio stations, and space flights. The RCW

also automatically adjusts for daylight

saving time, leap years, and leap

seconds. For more details about

the NIST Clock, please visit

www.NIST.gov

AUTOMATIC TIME SETTING

The RCW receives the NIST signal

automatically at 3:00AM every night. Once

the NIST signal is received the watch will

display the official U.S. time. The time and

date are set automatically for Eastern

Standard Time, which will need to be

adjusted if you are located in a different time

zone. If the signal cannot be received, the

RCW also can be set manually.

BEFORE USING THE RCW

The time zone that you are located in must

be selected. Setting the correct time zone

will allow the watch to set itself to the

correct time.

This watch should be set manually for the

first time. After that, the watch will

automatically adjust itself to maintain

accurate time.

SETTING THE TIME ZONE

The RCW will automatically set the time and

date when a NIST signal is received

successfully. However, you will still have to

set the correct time zone.

(Note: The RCW will not automatically

adjust to a new time zone if you are

traveling. You must change the time zone

setting to continue to keep the exact time.)

TIME ZONE SETTING

1. Press the MODE button three times and

the time zone will be displayed.

2. Press and hold the SET button for three

seconds or until the offset hours digits

begin to flash.

3. Press the RECEIVE button to increase or

press the LIGHT button to decrease the

hour-offset.

4. For standard time: (Eastern = -5) (Central

= -6) (Mountain = -7) (Pacific = -8)

5. Press the SET button once to return to

normal operation.

MANUAL TIME AND DATE SETTING

1. Press and hold the SET button for

three seconds and “12” or” 24” will blink

on the LCD.

Press the RECEIVE or LIGHT button to

change the setting from 12 to 24 or 24 to

12.

2. Press the SET button to advance to

the year setting.