Mandolyn Electronic Technology WS738 Weather Station Receiver User Manual WS738A3C DSN WS738A3

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Document ID	448005
Application ID	UVDC2Wp6kmSDiSNPv99fCQ==
Document Description	Users Manual
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	102.35kB (1279318 bits)
Date Submitted	2004-07-08 00:00:00
Date Available	2004-07-08 00:00:00
Creation Date	2004-07-01 10:22:13
Producing Software	Acrobat PDFWriter 5.0 for Windows
Document Lastmod	2004-07-01 10:22:38
Document Title	WS738A3C.DSN - WS738A3
Document Creator	OrCAD Capture for Windows - [WS738A3C.DSN - WS738A3]
Document Author:	kkng

Main Display Unit:
* Auto synchronizing radio controlled clock (DCF77)
* Perpertual Calendar
* Local temperature and humidity display
* Receives and monitors temperature and humidity
from up to 4 remote sensors via RF technology of
433MHz
* Maximum/minimum temperature records
* Temperature and humidity trend indicator
* Temperature history chart
* Temperature alarm (for local and one out
channel)
* Weather forecast display
* Moon phase symbols
* Sunrise/ Sunset time display
* Backlight
* User-selectable C or F
* Battery: 2 x AA size
Remote Sensor WT440H:
* Splash proof design with LCD
* Temperature display in user-selectable C or F
* Humidity display
* Transmission range: up to 40 meters
* Battery: 2 x AA size
WS738
receiver
OUT
WT440H
remote sensor
ii
iii
iv
Radio Control Clock
manual clock setting
Press and hold MODE for 3 seconds to enter the clock setting mode
(the CLOCK 1 symbol appears and the time will flash)
Press HOUR to set the hour and MINUTE to set the minute;
Press ALARM/(C/F) during clock setting, to change between
12 and 24 hour display. This also will end clock setting.
Press MODE or do not press any key for 1 minute to finish
clock setting.
Clock 2 Setting:
i iv v
ALARM/(C/F): toggles between C and F, 12 and 24
hour format, Alarm 1 & 2 on and off; disables (resets)
high & low temperature alarms; disable/enable backlight
CHN: scrolls through remote channels (1 to 4); scrolls
through local and remote channels (1 to 4) in (high &
low) temperature alarm mode; set sunrise/sunset
zone; activate learn process
SET: enter into setting mode and confirm the
values during setting.
Battery compartment
v Scroll to Clock 2 mode using MODE
vi Press + or - key to change the hour
(in one hour increments/decrements relative to Clock 1)
SET
C/F
Learn function executes automatically and runs for approximately 3
minutes when batteries are first installed in the receiver.
Within these 3 minutes, receiver picks up the temperature &
humidity signals from remote sensor and displays the readings.
RF WIRELESS
OUT
WEATHER
TRANSMITTER
SET
C/F
Manual-Learn (Searching for Remote Signals):
If a new remote sensor is added or if signal is lost (outdoor display
blinking), learn function must be executed again.
setting remote sensors
Press SET to start
House code will flash for 10 seconds
Select house code (1-15) by pressing C/F key.
Press SET to confirm.
Remote sensors for each receiver must be
set to the same house code.
3a 5a
5b 3b 1
OUT
SET
Channel will flash for 10 seconds
Select channel(1-4) by pressing C/F key.
Press SET to confirm.
Press and hold CHN for 3 seconds to start
Beep sound indicates that
learn function has started
'Channel' symbol will flash and
unit will beep as each remote
sensor is detected
Temperature & humidity readings of
remote sensor displays on the receiver.
C/F
*Use a different house code if your weather station detects
othersignals from neighbouring sources
* Factory default: house code = 01 and channel = 01
LCD display
Remote sensor: Low battery indicator will appear on sensor’s LCD along with a low battery
indication next to the corresponding channel on the receiver’s LCD
OUT
C/F: change value of channel and house code during
setting. Select between C or F.
DATE, YEAR & ALARM SETTING
Date Setting:
a Scroll to date mode using MODE
a e
c f
from the year/month/day setting
February will have either 28 or 29 days depending on the year setting
Year Setting
1 Scroll to Year mode using MODE
2 Press ALARM manually to enable
When Alarm Sounds
SUNRISE/ SUNSET TIME DISPLAY
This weather station has state-of-art feature of Sunrise/ Sunset time display.
The Sunrise/ Sunset time will display corresponding to your selected
location. Please follow the procedures as below:
seconds to enter the clock setting mode )
2 Identify which zone you are located at
(see the zone map at last page)
3 Set the Zone code with CHN key
4 Daytime duration will change according to selected zone code
and date.
5 Sunrise and Sunset times follows to date.
Example:
and disable DST
ii vi
P.6
P.7
OUT
1 Enter into clock setting mode ( Press and hold MODE for 3
After that the alarm will sound again.
3 Press ANY other key will shut off the alarm.
Without interruption, alarm will shut off automatically after one minute.
Note:
* It is not recommended unless DCF is failed to synchronize
* It is recommended to change the year/month/day information accordingly
or
will flash
2 Press SNOOZE to snooze the alarm for 8 minutes.
DST Setting
User can manually select DST (daylight saving time)
feature when DCF is failed to receive
5 When the alarm is set ON, the bell symbol will appear
e Scroll to YEAR mode using MODE
f Press + or - key to adjust year
Alarm 1and Alarm 2 Setting
1 Scroll to Alarm1 mode (Alarm2 mode)
2 Press HOUR to set hour
3 Press MINUTE to set minute
4 Press ALARM to toggle alarm on and off
P.4
DATE, YEAR & ALARM SETTING
using MODE
f b
Auto/Manual Learn will not operate while the radio controlled clock is receiving DCF77 signals
P.3
b Press HOUR/+/MAX to set month
c Press MINUTE/-/MIN to set date
d Weekday is automatically determined
OUT
LOW BATTERY INDICATION:
Receiver: Low battery indicator will display continuously when batteries need replacing
2 AA size batteries (WS738)
2 AA size batteries (WT440H)
(included)
Insert between terminals observing
proper polarity then replace cover
3 When DST is set ON, the DST symbol will appear
iii
P.5
Automatic Learn Function:
remove battery cover
P.2
The Ws738 is designed to automatically synchronize its calendar clock once
it is brought within range of 1500km of the Frankfurt DCF77 radio signal.
When the WS738 is within this range, its radio-control mechanism will
override all manual settings.
When receiving radio signal, the Radio Tower symbol starts
to blink. A complete reception generally takes several
minutes, depending on the strength of the radio signal.
When the reception is complete, the Radio Tower
symbol will stop blinking and remain solid.
For better reception, place the clock away from metal
objects and electrical appliances (i.e. television, computer,
monitor, etc.) to minimize interference.
Clock 1 Setting:
MINUTE/-/MIN: shows minimum
temperature; adjusts clock, alarm, date &
year and temperature alarm values
P.1
CLOCK SETTING
Synchronization
SETUP
AA 1.5V
HOUR/+/MAX: shows maximum
temperature; adjusts clock, alarm, date &
year and temperature alarm values
battery installation
AA 1.5V
GETTING STARTED
- AA 1.5V +
The WS738 is a weather station device that has
several weather related functions. The main
features are:
SNOOZE/MODE: scrolls through Clock 1 & 2,
Alarm 1 & 2, Date & Year, and Temperature Alarm
(high & low) mode; snooze for alarm
+ AA 1.5V -
with weather forecast
button placement
GETTING STARTED
- AA 1.5V +
WS738
Wireless Weather Station
+ AA 1.5V -
OWNERS MANUAL
Congratulations on your purchase of this weather
station, WS738. Please take the time to read and
understand this manual so you can begin to enjoy
the convenience and features this product has to
offer.
P.8
MOON PHASE
The moon phase is automatically updated
according to the year/month/day.
Check Local Temperature & Humidity
Moon Phase Display
1 New Moon
Check Remote Temperature & Humidity
Young Crescent
Waning Gibbous
After insert batteries, local temperature &
humidity will display in alternate pattern.
Press CHN to toggle between Channel 1, 2, 3 and 4.
Temperature and humidity readings will alternate
on the receiver.
Waxing Gibbous
Full Moon
You can set high temperature or low temperature alarms for one local
1 5
and one for one remote channel
Local temperature alarm
Toggle between C and F by pressing
C/F in either Clock1 or Clock2 mode.
2 The default value 14C or existing preset will flash
3 Press + or - key to set the temperature limit value
4 Press ALARM key continuously to scroll and select the high
temperature alarm, low temperature alarm or disable the alarm function
5 Press MODE to finish
Min and Max Temperature & Humidity
Press MIN in Clock1 mode to display
minimum temperature and humidity
Press MAX in Clock1 mode to display
maximum temperature and humidity
Note:
Min/Max readings are
automatically cleared
daily at 00:00
2 The default value 14C or existing preset will flash
3 Press + or - key to set the temperature limit value
4 Press ALARM key continuously to scroll and select the high
temperature alarm, low temperature alarm or disable
the alarm function
5 Press CHANNEL to select one desired channel of transmitter
6 Press MODE to finish
Last Quarter
when temperature alarm sounds
Old Crescent
The trend indicator shows the trend of temperature & humidity
determined by the particular sensor in the past half hour interval.
PRESSURE HISTORICAL BARGRAPH
Rising
Steady
Freeze
Warning
Storm Alert


Storm Alert
* Storm symbol will flash to warn of thunderstorm.
* It is activated when pressure falls/rises and temperature plunges.
About Freeze Warning
* Snow symbol will flash to warn of 'freezing'.
* Activated when Channel 1's temperature is between -1.9 C and +2.9 C
* Snow will appear solid if and when Channel 1's temperature falls below -1.9 C.
It is to alert that
1 the temperature has exceeded the preset temperature limit.
a Press any key to stop temperature alarm; or
b If no key is pressed, the temperature alarm will automatically stop
Falling
Note:
* Sun / Moon symbol display according to sunset/ sunrise time.
* Initially, the weather will be cloudy
* Remote sensor Channel 1 will be used for weather indication.
sound, different to that of Alarm1 and Alarm2.
P.11
P.10
BACKLIGHT
This Weather Station is equipped with Backlight function.
Pressing any key will turn on the backlight function.
To save energy, you can select to Turn Off the backlight by executing the
following steps:
Turn Off Backlight
Steps
1. Use MODE key scrolling to Date display
2. Press ALARM key
Afterwards, the backlight will not be activated even if pressing any key
Reactivate Backlight
Repeat the above same steps to reactivate the backlight function. Afterwards,
pressing any key will turn on the backlight
P.14
P.12
TROUBLESHOOTING
solution
problem
i Cannot receive radio control DCF-77
i Place the clock away from metal objects or
ii The temperature measurement of
ii Wait for about 1-2 minute to ensure the remote
signals to update the clock.
remote sensor and receiver does
not match.
electricalappliances such as TVs, computers,
monitors, etc.
sensor and receiver are in phase. Otherwise,
re-synchronize receiver by holding CHNfor 3
seconds until a beep is heard.
iii Temperature reading of outdoor
iii Ensure the remote sensor is out of direct sunlight,
iv Receiver is no longer receiving
iv - Repeat the learning procedures.
remote sensor seems to high.
The bar graph lets you see the pressure trend over a period of 12 hours
in 3-hour intervals.
P.13
Snowing
c Once triggered, temperature alarm comes on as a distinctive
P.9
WEATHER DISPLAY
Raining
OR
34
Cloudy
itself after one minute.
Arrow Indicator
REMARKS:
* After setting up, reading for weather forecasts should be discarded for the
next 12-24 hours. This will allow sufficient time for the Weather Station to
operate at a constant altitude and therefore result in a more accurate forecast.
* Common to weather forecasting, absolute accuracy cannot be guaranteed.
The weather forecasting feature is estimated to have an accuracy level of about
75% due to the varying areas the Weather Station has been designed for use in.
* If the Weather Station is moved to another location significantly higher or
lower than its initial standing point (e.g from ground floor to 1st floor of a
house), remove the batteries and reinsert them after about 30 seconds. By
doing this, the Weather Station will not make mistake of new location being a
possible change in air pressure. Again, discard the weather forecasts for the
next 12-24 hours as this allow time for operation at a constant altitude.
1 6
weather forecast symbols
This weather station is capable of detecting barometric pressure changes, and based on
the data collected, can predict the weather for the next 12 to 24 hours. The effective range
covers an area of 30 – 50km.
Sunny
Outdoor temperature alarm
1 Scroll to remote channel temperature alarm mode by using MODE
WEATHER DISPLAY
Temperature & humidity trend
Trend
1 Scroll to local temperature alarm mode by using MODE
C or F Temperature Display
First Quarter
TEMPERATURE ALARM
TEMPERATURE & HUMIDITY DISPLAY
remote sensor signals or display
SPECIFICATIONS
Weather Station Receiver WS738
Battery Type: 2 X 1.5V AA batteries
Operation Temp: -5°C to +50°C
Temp. Range: -9.9°C to +55°C
Measurement Accuracy: Max. +/- 1°C
within measuring range of 0 to 40°C
Resolution: 0.1°C
Humidity Range: 25% to 90% RH
Weather Station Transmitter WT440H
Battery Type: 2 X 1.5V AA batteries
Operation Temp.: -20°C to +60°C
Temp. Range: -30°C to +70°C
Temperature Resolution: 0.1°C for above -10°C /
1°C for below -10°C
Measurement Accuracy: Max. +/- 1°C within
measuring range of 0 to 40°C
Humidity Range: 25% to 90% RH
Transmission Frequency: 433.92 MHz
Transmission Range: 40 meters (in open area)
and away from sources of heat.
- Temperature may be below -30C.
- Batteries in remote sensor may need changing.
- Move remote sensor closer to the receiver.
- Make sure remote sensor is away from sources of
electrical disturbance.
P.15
P.16
INSTRUCTION TO THE USER
This equipment has been tested and found to comply with the limits for a class B digital device, pursuant to
part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses and can radiate radio frequency
energy and if not installed and used in accordance with the instructions, may cause harmful interference to
radio communications. However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television reception, which can
be determined by turning the equipment off and on, the user is encouraged to try to correct the interference
by one or more of the following measures:
•
•
•
•
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
In order to maintain compliance with FCC regulations, shielded cables must be used with this equipment.
Operation with non-approved equipment or unshielded cables is likely to result in interference to radio and
TV reception. The user is cautioned that changes and modifications made to the equipment without the
approval of manufacturer could void the user’s authority to operate this equipment.

---

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About                           : uuid:d6f9691c-3cd9-4bd4-a79b-9c7446d96b1e
Modify Date                     : 2004:07:01 10:22:38+02:00
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Format                          : application/pdf
Title                           : WS738A3C.DSN - WS738A3
Creator                         : OrCAD Capture for Windows - [WS738A3C.DSN - WS738A3]
Author                          : kkng
Producer                        : Acrobat PDFWriter 5.0 for Windows

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