also automatically adjusts for daylight
DIGITAL RADIO
saving time, leap years, and leap
CONTROLLED WATCH
seconds. For more details about
the NIST Clock, please visit
www.NIST.gov
Models
RCW -101
AUTOMATIC TIME SETTING
RCW -103
The RCW receives the NIST signal
RCW -303
automatically at 3:00AM every night. Once
the NIST signal is received the watch will
RCW -305
display the official U.S. time. The time and
date are set automatically for Eastern
Online Product
Standard Time, which will need to be
Registration
adjusted if you are located in a different time
http://www.simacorp.com
zone. If the signal cannot be received, the
RCW also can be set manually.
BEFORE USING THE RCW
INTRODUCTION
The time zone that you are located in must
Congratulations on your purchase of the
be selected. Setting the correct time zone
Sima RCW. Before you begin using the
will allow the watch to set itself to the
RCW, please read this manual carefully and
correct time.
keep this manual for further information.
This watch should be set manually for the
ABOUT NIST
first time. After that, the watch will
The RCW utilizes a highly sensitive radio
automatically adjust itself to maintain
receiver to automatically set the time and
accurate time.
date. The National Institute of Standards
and Technology (NIST) measures each
SETTING THE TIME ZONE
second of time as 9,192,631,770 vibrations
The RCW will automatically set the time and
of a Cesium 133 atom in a vacuum. The
date when a NIST signal is received
measurement of the Cesium 133 atom is
successfully. However, you will still have to
accurate to one second every one million
set the correct time zone.
years. The time is then transmitted from
(Note: The RCW will not automatically
Fort Collins, CO to the rest of the United
adjust to a new time zone if you are
States (US). NIST is the official time used
traveling. You must change the time zone
by the US; it governs ship movements,
setting to continue to keep the exact time.)
radio stations, and space flights. The RCW
TIME ZONE SETTING
or the LIGHT button to decrease the day
1. Press the MODE button three times and
of the week.
the time zone will be displayed.
6. Press the SET button to advance to
2. Press and hold the SET button for three
hours.
seconds or until the offset hours digits
Press the RECEIVE button to increase
begin to flash.
the hour or the LIGHT button to
3. Press the RECEIVE button to increase or
decrease the hour.
press the LIGHT button to decrease the
7. Press the SET button to advance to
hour-offset.
minutes.
4. For standard time: (Eastern = -5) (Central
Press the RECEIVE button to increase
= -6) (Mountain = -7) (Pacific = -8)
the minute or the LIGHT button to
5. Press the SET button once to return to
decrease the minute.
normal operation.
8. Press the SET button to advance to
seconds.
MANUAL TIME AND DATE SETTING
Press the RECEIVE button or the
1. Press and hold the SET button for
LIGHT button to reset the seconds to
three seconds and "12" or" 24" will blink
"00".
on the LCD.
9. Press the SET button one more time
Press the RECEIVE or LIGHT button to
to return to normal operation.
change the setting from 12 to 24 or 24 to
12.
1.
2. Press the SET button to advance to
2.
the year setting.
3.
Press the RECEIVE button to increase
4.
the year or LIGHT button decrease the
5.
desired year.
3. Press the SET button to advance to
the month setting.
Press the RECEIVE button to increase
the month or LIGHT button decrease the
desired month.
4. Press the SET button to advance to
the day of the month.
Press the RECEIVE button to increase
the day or LIGHT button to decrease the
day of the month.
5. Press the SET button to advance to
the day of week.
MODE
Press the RECEIVE button to increase
BUTTONS AND FUNCTIONS
RECEIVE BUTTON
Pressing and holding the RECEIVE button
for five seconds activates the manual signal
receiver.
Pressing the RECEIVE button while in
manual setup will increase the digits
displayed on the LCD.
Press and hold the RECEIVE button to
increase the numbers at a faster rate.
LIGHT
Pressing the LIGHT button activates the
RCW backlight.
Pressing the LIGHT button while in manual
setup decreases the digits displayed on the
LCD.
Press and hold the LIGHT button to
decrease the numbers at a faster rate.
WATCH DISPLAY ICONS & BUTTONS
AM/PM Indicator
6.
Month & Day
Time Zone indicator
7.
Hours: Minutes: Seconds
NIST Reception
8.
Alarm Indicators (AL1 + AL2)
Daylight Saving Time Indicator,
9.
EL - Light (RCW 101 only)
Day of Week
6
4
5
3
SET
2
1
SET
Pressing and holding the SET button for
three seconds enters the manual setup
mode. Different settings can be accessed
by pressing the SET button repeatedly .
MODE
Press the MODE button to enter the
alarm-setting menu.
EL (RCW-101 only)
Pressing the EL button will activate the
RCW backlight.
SETTING ALARM 1 & ALARM 2
The RCW has two alarms that can be
activated, AL1 and AL2. Pressing any
button will turn the alarm sound off once
activated. If no button is pushed, it will
automatically shut off after two minutes.
1) Press the MODE button once for
AL1, twice for AL2. The icon will
blink on the right side of the LCD.
2) Press and hold the SET button for
three seconds.The hour section of
the clock will begin blinking.
3) Press the RECEIVE button to
increase the hour or the LIGHT
button to decrease the hour.
4) Press the SET button to move to the
7
minute section of the clock.
5) Press the RECEIVE button to
RECEIVE
increase the minute or the LIGHT
button to decrease the minute.
6) Press the SET button to advance to
the ON / OFF setting.
8
7) Press the RECEIVE button to set the
alarm to ON or OFF.
The icon for ON/OFF is located above
LIGHT
the second portion of the clock (on=ON,
oF=OFF).
8) The RCW will return to normal
9
operation in approximately 15 seconds.