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The HAA-1401B
has a black rim, a white face, and large, highly readable
numbers and
minute/second markers. Its 14-inch diameter is popular for
medium size classrooms, reception areas, and conference rooms
The HAA-1401B is a high
performance clock with quality construction and excellent
sensitivity, yet still at a price within reach for schools on a
budget.
HTAWI atomic clocks are easy to
set up. Simply set the time zone switch to the correct
time zone, enable or disable DST compliance (disable only if you
are in an area that does not switch to DST), and hang the
clock. The clock will receive the WWVB signal and set
itself*. In good conditions, this will occur within the
hour. In non-ideal conditions, it could take longer,
possibly overnight. It is possible to manually set the
clock, in which case the manual setting will be overridden when the
signal is received.
Features:
- Large digits for readability
from a distance
- High quality construction with
a scratch resistant glass face to endure many years of
cleanings
- Accurate to 1 second per million years
- Sets automatically to WWVB radio signal
- Switch selection for all four U.S. mainland time zones
- Automatically adjusts for daylight savings time
(may be optionally disabled)
- White face with black rim for an exceptionally clean,
contemporary look
- Powered by one AA alkaline
battery (not included), with normal life of
over 1 year
Dimensions:
- Diameter:
14 inches overall, 11 5/8 inch face
- Depth:
1.75 inches
Atomic Time:
The NIST (National Institute of
Standards and Technology, Time and Frequency Division) maintains
a highly accurate master clock based on the resonance of a
Cesium-133 atom (hence the name, atomic clock). Timing
information from this master atomic source is broadcasted by the
WWVB radio station in Ft. Collins, Colorado.
Hewes Time and Weather
Instruments (HTAWI) "Atomic" clocks maintain
exceptional accuracy by tuning into the WWVB radio signal. The built-in
receiver achieves reliable signal reception up to 2000 miles from the WWVB
transmitter in Ft. Collins, Colorado. As a result, HTAWI atomic clocks will calibrate
themselves to the atomic clock
throughout the continental U.S., and also in much of Canada.
Just set the time zone switch, insert the battery, and wait until the signal is received.
*Although
HTAWI clocks have proven to have excellent signal reception
capabilities, like any radio receiver, they cannot receive a
signal that doesn't reach the clock, or is overwhelmed by
interference. Building construction with a large steel
content (like many modern high rises) may block the transmissions, making clock setting
problematic, unless the clock is placed with a view out a window
facing Colorado. Interference from lamp dimmers, computer
monitors, or other electrically noisy devices which are in close
proximity to the clock can also cause problems. If the
clock does not set itself within 24 hours, you may wish to try
placing the clock in a window facing Colorado to receive it's
first setting, and then relocating it to your desired
location.
Instructions
for setup
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