SkyScan 88302 User manual

QUICK SET UP INSTRUCTIONS
Welcome to the world of radio controlled timekeeping technology. We hope you will
enjoy the convenience of never having to set your clock again and the confidence of
knowing exactly what time it is.
Twist and lift open the battery compartment cover at the back of the clock and
Insert 1 fresh AA, LR6 1.5 volt ALKALINE battery according to the polarity
marked on the case.
Press time zone button to select a time zone.
Replace the battery compartment cover.
THAT'S IT! During the night your clock will automatically set itself.
For a better understanding of how and why your clock works please continue reading.

Note: When the battery is installed the second hand will advance eight seconds (two
seconds per step x four steps). The clock is now searching for a signal. For the initial
setting it is recommended to stand the clock in an upright position near a window. Within
five minutes the clock will either receive the WWVB signal and set itself to the exact
time, or it will determine that the signal is not receivable at its current location and time
of day. If a signal is not receivable it will fast-forward the hands to the 4, 8, or 12 o'clock
position and search for WWVB until a signal is received. If the time is manually set, the
clock will continue to periodically search for a signal and automatically reset the hands
when the signal is received.
NOTHING IS MORE PRECISELY MEASURED THAN TIME!
Since the beginning of time, man has been fascinated with the measurement of time and
has devised more accurate machines to trap and measure time. Today, time is precisely
measured in the United States by the most accurate clock in North America, the Atomic
Clock of the US National Institute of Standards and Technology, Time and Frequency
Division in Boulder, Colorado. A team of atomic physicists continually measures every
second of every day to an accuracy of ten billionths of a second per day. These physicists
have created an international standard, measuring a second as 9,192,631,770 vibrations of
a Cesium 133 atom in a vacuum. This atomic clock regulates the WWVB radio
transmitter located in Fort Collins, Colorado, where the exact time signal is continuously
broadcast throughout the United States at 60 kHz to take advantage of stable longwave
radio paths found in that frequency range. Radio waves at these low frequencies use the
earth and the ionosphere as a wave-guide and follow the curvature of the earth for long
distances.
The built in antenna system will receive the WWVB signal anywhere in North America
within 2000 miles of Fort Collins where long-wave radio reception is undisturbed. A
microprocessor activates the receiver and processes the time signal from Fort Collins
overnight.
Through the radio signals, Skyscan radio controlled clocks always keep precise time. The
changeover from standard time to daylight savings time, and vice versa, takes place
automatically with the same precision.
ADDITIONAL DETAILS
To set up your clock simply install one fresh AA, LR6 ALKALINE battery. Due to the
nature of long wave radio signals it is normally not possible to receive a signal during the
day so it is best to install the battery late in the evening. Select your time zone by
pressing one of the four time zone buttons PT-Pacific Time, MT-Mountain Time, CT-
Central Time, ET-Eastern Time. The time zone buttons may be pressed any time after
installing the batteries. If multiple buttons are pressed the clock will set to the time zone
selected last. If no time zone is selected the clock will default to Pacific Time. Another
time zone can be selected during or after the clock has set itself. Your clock can only set

itself to one of the four time zones stated above. For time zones outside of PT, MT, CT or
ET you must manually set the time using the Manual Time set button on the back of the
movement.
The Skyscan clock is designed for indoor or outdoor use. For indoor locations, select a
location to place your radio-controlled clock where it will be at least six feet away from a
TV, computer, air conditioner or other household electrical appliances. The optimal
location is near a window. Windows facing Colorado provide the best signal. For outdoor
locations, select a location sheltered from direct sunlight, preferably under a roof or porch
area, and facing Colorado for better reception of the WWVB signal. Although the clock's
case is weather resistant, it is not waterproof. Avoid exposing the clock directly to
sunlight, rain, snow or extreme weather conditions (recommended operating temperature
range is between 23QFto 131QF) as it may cause damage and the clock will malfunction.
Note: High humidity combined with a hot sunny day and a cool night may also cause
water to condense on the inside surface of the lens. The lens will clear up as soon as the
weather is stabilized. This water condensation does not interfere with the function of the
clock.
The WWVB time signal will easily penetrate masonry and wood framed buildings.
WWVB will penetrate almost every residential building and most steel buildings if they
have adequate windows. It is not possible, however, for WWVB to penetrate most indoor
shopping malls and rooms in the center of large office buildings that do not have
windows. In buildings that WWVB cannot penetrate, you may set the time using the
manual time set button. When the clock receives the WWVB signal it will automatically
set the hands to the exact time.
Skyscan clocks do not receive or process radio controlled time signals from Germany's
DCF 77, Japan's J Ga AS, or England's MSFs atomically regulated transmitters. Skyscan
clocks can be manually set and used anywhere.
For more information on the NIST and radio controlled time, see www.tf.nist.gov
SET THE TIME USING THE MANUAL TIME SET BUTTON
In some cases, the Skyscan clock may not receive the WWVB signal due to atmospheric
disturbances or hard to reach locations such as inside malls. In this case, please use the
Manual Time Set button, located at the back of the clock to manually set the time. To do
this:
1. Press and hold the Manual Set button.
2. The minutes and hour hands will fast-forward.
3. Keep holding the Manual Set button until the time is set as required.
4 Release the button.

Note:
The clock will continuously search for WWVB at1:00 am, 3:00 am, 4:00 am, 6:00 am,
12:00 pm, 6:00 pm and 11:00 pm until a signal is received. Once the WWVB time signal
is received, the WWVB time will override the manual set time.
TEMPERATURE AND HUMIDITY
The Skyscan clock has two analog sensors that measure surrounding temperature and
humidity. The temperature information is displayed in Fahrenheit and the Humidity data
is displayed in percentage.
The thermometer and hygrometer have been calibrated at the factory. To check the
sensors accuracy, tune to your local weather forecast information broadcast for the latest
weather information. It may be necessary to adjust the sensors.
To manually adjust the sensors, gently turn the corresponding knobs located at the back
of the clock until the required reading has been reached.
TROUBLESHOOTING
The wonderful advantage of owning a SkyScan radio controlled clock is that it is
virtually trouble free. If the clock receives a clear signal it will set itself perfectly. If it
does not receive a signal consider the following:
Battery: The SkyScan clock must have a fresh battery to receive and process the time
signal.
Location: Try a different location, ideally near a window. It should be at least six feet
from computers, TVs, air conditioners, other Radio-Controlled clocks and other electrical
appliances that cause interference.
Weather: Electrical storms between you and Colorado during the night will interfere
with the WWVB signal.
DAYLIGHT SAVINGS TIME
The National Institute of Standards and Technology and WWVB encode a special DST
"bit" in the WWVB transmission for DST. Your Skyscan clock will read this information
and automatically advance the hands one hour in the spring and eleven hours in the fall.
ARIZONA AND INDIANA
If you live in an area that does not recognize DST you must press the (unmarked) DST
button for one second to deactivate your clock's DST program. To reactivate the DST
program simply press the DST button again for one second.

FREQUENTLY ASKED QUESTIONS
Q. How long will the battery last?
A. A good AA alkaline battery will last over one year. If your clock is located in an
area with little interference where it can quickly receive a signal the battery will
last much longer than one year.
Q. Can the clock be wired to control timing circuits?
A. No.
Q. Why does the second hand move only once every two seconds, but it moves two
seconds per step?
A. When the battery drops below 1.25 volts the clock indicates that it is time to
change the battery by advancing the second hand in two second steps. The
operating voltage range is 1.25 to 1.75 volts.
WARRANTY:
This product is warranted to be free of defects in manufacturing for 2 years after purchase
at Costco.
This model is discontinued and is not eligible for the manufacturer’s warranty. Defective
clocks should be returned to the place of retail purchase.
BATTERIES CHANGE:
For best performance, batteries should be replaced at least once a year to maintain the
best running accuracy. Ensure that the batteries used are new and the correct size.
Please help in the preservation of the environment and return used batteries to an
authorized depot.