World Time Setting
1.
The hour digits of the worldtime on LCD 1 will start flashing. Select the desired hour by use of the
“+”
key. Setting
of minutes is neither possible nor necessary.
2. Press
the
“SET”
key to move on to the
“ °C/°F Setting”
.
°C/°F Setting
1.
The temperature displays including the characters
“°C”
or
“°F”
will start flashing on LCD 3 (Default setting °F). By
use of the
“+”
key select
“°C”
for temperature display in degrees Celsius or
“°F”
for degrees Fahrenheit.
2. Press
the
“SET”
key to move to the mode
“LCD Contrast Setting”
.
LCD Contrast Setting
1. The
word
“LCD 5”
will be flashing on LCD 1. This is the manufacturer's default setting.
2. Using
the
“+”
key choose the most convenient contrast (0 - 7 contrast levels) for the location of the World Time
Center.
3. Press
the
“SET”
key to exit the programming mode and switch back to the normal display mode.
Leaving the Programming Mode
•
To return to the normal display mode from anywhere in programming mode simply press any desired key
but
the
“SET”
or the
“+”
key at any time.
•
If no keys are pressed for at least 15 seconds in programming mode, the Wallclock Weather Station will
automatically switch back to normal display mode.
Reset of all Data
By removing the batteries from both World Time Center and Temperature sensor all displayed data will be lost. To reset
all data perform a basic setup as described in “
Reset
” above.
Data Reception
Criteria for Reception
For reception and computing of displayed values, the software of the World Time Center performs a number of
comprehensive operations
(
see
Index
) which are not necessarily important for the user to know. In case the time is not
correctly displayed on LCD 2, then please see “
WWVB Reception Check”
.
WWVB-Signal Test
The World Time Center will automatically start scanning for the WWVB frequency signal (time signal transmission) after
the batteries are inserted. In normal surroundings (i.e. at a safe distance from interferring sources such as TV sets), it
takes between 3 to 5 minutes to receive the signal. If after 10 minutes of inserting the batteries the WWVB signal is not
properly received then check the following list before manually setting the time (see “
Time Setting”
) in programming
mode.
1.
The distance of the units should be at least 1.5 - 2.0 Meters away from interferring sources such as computer
monitors or TV sets.
2.
Avoid placing the units onto or in the immediate proximity of metal window frames.
4.
Within thick concrete rooms such as basements and tower blocks, the WWVB frequency signal is naturally
weaker for reception. In extreme cases, place the unit closer to a window and/or point its front or rear towards the
general direction of NIST Radio Station WWVB in Ft. Collins, Colorado (again avoid placing near metal frames or
structures).
Note:
Users may be located in areas where atmospheric disturbances are the immediate cause for not receiving the WWVB
frequency signal. During nighttime, atmospheric disturbances are usually less severe and reception is possible in most
cases. With a single daily reception, it is adequate for the World time Center to keep time accuracy deviation to below
0.5 seconds in a period of 24 hours.
When reception is successful, the WWVB transmission tower icon will start flashing in the upper center of LCD 2 as a
sign that the signal has been located and is about to be received. Once the signal has been locked, the WWVB tower
icon will stay fixed on the LCD and the received time will then update and correct the manually set time.
Positioning
Positioning of World Time Center
The World Time Center has been designed to be hung on a wall. To mount please do the following:
1.
Fix a screw (not supplied) into the desired wall, leaving the head extended out the wall by about 5 mm as indicated
above.
2.
Using the World Time Center's hanging hole on the back of the unit, carefully hang it onto the screw. Always
ensure that the product securely locks onto the screw head before releasing.
Positionning of the Outdoor temperature sensor
The Outdoor temperature sensor has a holder and is supplied screws and double sided tape for affixing by method of
sticking or by screw. Before securing the transmitter to the desired location,
check that the temperature can be
received first
.
To affix by screw, follow these steps
:
1.
Using the holes in the holder as a guide, mark the holes on the drilling surface.
2.
Drill the marked area to the required depth
3.
Screw the holder onto wall and click the transmitter into holder
To affix using double sided tape, follow these steps
:
1.
Peel one side of the tape and press it firmly against the back of the holder
2.
Now peel the other side of the tape and stick the holder firmly onto the surface. Do not stick onto bricks, enamel
finished or greasy surfaces.
Note:
Users are recommended to check that the WWVB time signal or temperatuire from the transmitter is
properly received before permanent standing, hanging or mounting of World Time Center. Should the
World Time Center not pick up the signal from the desired location, then relocate slightly. Once the signal
is received, mount your system units permanently.
Important Notes
Hanging
Hole
