Casio SGW300H-1AV User Manual

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Operation Guide 3202
2
To change the Daylight Saving Time (summer time) setting
1. In the Timekeeping Mode, hold down 
A until the 
currently selected city code (Home City) starts to flash. 
This is the city code setting screen.
 Before the city code starts to flash, the message 
SET Hold will appear on the display. Keep 
A
depressed until SET Hold disappears and the city 
code starts to flash.
2. Press 
C to display the DST setting screen.
3. Press 
D to toggle between Daylight Saving Time (On)
and Standard Time (OFF).
4. After all the settings are the way you want, press 
A to 
return to the Timekeeping Mode.
 The DST indicator appears to indicate that Daylight 
Saving Time is turned on.
Configuring Current Time and Date Settings
You can use the procedure below to adjust the current time and date settings if they 
are off.
To change the current time and date settings
1. In the Timekeeping Mode, hold down 
A until the 
currently selected city code (Home City) starts to flash. 
This is the city code setting screen.
 Before the city code starts to flash, the message 
SET Hold will appear on the display. Keep 
A
depressed until SET Hold disappears and the city 
code starts to flash.
2. Use 
D and B to select the city code you want.
 Select your Home City code before changing any 
other setting.
 For full information on city codes, see the “City 
Code Table”.
3. Press
C to move the flashing in the sequence shown below to select the other settings.
Barometer
unit
Temperature
unit
Illumination
Duration
Button Operation 
Tone On/Off
Day
City
Code
DST
Altitude
unit
12/24-Hour
Format
Seconds
Hour
Minute
Year
Month
 The following steps explain how to configure timekeeping settings only.
4. When the timekeeping setting you want to change is flashing, use 
B and/or D to 
change it as described below.
Screen
To do this:
Do this:
Change the city code
Use
D (East) and 
B (West).
Toggle between Daylight Saving Time (On)
and Standard Time (OFF).
Press
D.
Toggle between 12-hour (12H) and 24-hour 
(24H) timekeeping.
Press
D.
50
Reset the seconds to 00
Press
D.
Change the hour or minute
Use
D (+) and B
(–).
Change the year, month, or day
5. Press 
A to exit the setting screen.
Note
 For information about selecting a Home City and configuring the DST setting, see 
“Configuring Home City Settings”.
 While 12-hour format is selected for timekeeping, a P (PM) indicator will appear for 
times from noon to 11:59 p.m. No indicator appears for times from midnight to 
11:59 a.m. With 24-hour format, time is displayed from 0:00 to 23:59, without any P
(PM) indicator.
 The watch’s built-in full automatic calendar makes allowances for different month 
lengths and leap years. Once you set the date, there should be no reason to 
change it except after you have the watch’s battery replaced.
Barometer/Thermometer
This watch uses a pressure sensor to measure air pressure (barometric pressure) and 
a temperature sensor to measure temperature.
To enter and exit the Barometer/Thermometer Mode
1. While in the Timekeeping Mode, press 
C to enter the 
Barometer/Thermometer Mode.
BARO will appear on the display, indicating 
that barometric pressure and temperature 
measurements are in progress. The measurement 
results will appear on the display after about five 
seconds.
 After you press 
C, the watch will take readings 
every five seconds for the first three minutes, and 
then every two minutes after that.
2. Press 
C five times to return to the Timekeeping Mode.
The watch will return to the Timekeeping Mode automatically if you do not perform 
any operation for about one hour after entering the Barometer/Thermometer Mode.
Barometric Pressure
 Barometric pressure is displayed in units of 1 hPa (or 0.05 inHg).
The displayed barometric pressure value changes to - - - if a measured barometric 
pressure falls outside the range of 260 hPa to 1,100 hPa (7.65 inHg to 32.45 inHg). 
The barometric pressure value will reappear as soon as the measured barometric 
pressure is within the allowable range.
Setting
DST indicator
Setting
DST indicator
PM
indicator
Seconds
Hour : Minutes
City
code
PM
indicator
Seconds
Hour : Minutes
City
code
Temperature
Current time
Barometric
pressure
Pressure
differential
pointer
Temperature
Current time
Barometric
pressure
Pressure
differential
pointer
Temperature
 Temperature is displayed in units of 0.1°C (or 0.2°F).
 The displayed temperature value changes to --.- °C (or °F) if a measured 
temperature falls outside the range of –10.0°C to 60.0°C (14.0°F to 140.0°F). The 
temperature value will reappear as soon as the measured temperature is within the 
allowable range.
Display Units
You can select either hectopascals (hPa) or inchesHg (inHg) as the display unit for the 
measured barometric pressure, and Celsius (°C) or Fahrenheit (°F) as the display unit 
for the measured temperature value. See “To specify temperature, barometric 
pressure, and altitude units”.
Barometric Pressure Differential Pointer
This pointer indicates the relative difference between 
the most recent barometric pressure reading and the 
current barometric pressure value displayed in the 
Barometer/Thermometer Mode.
Reading Barometric Pressure Differential Pointer
Pressure differential is indicated in the 
range of ±5 hPa, in 1-hPa units.
If the pointer is 
located here:
It means this:
CLOUDY (–)
Pressure is falling and 
weather will tend to 
deteriorate.
FINE (+)
Pressure is rising and 
weather will tend to 
improve.
 The nearby screen shot, for example, 
shows what the pointer would indicate 
when the calculated pressure 
differential is approximately – 3 hPa 
(approximately – 0.09 inHg).
 Barometric pressure is calculated and displayed using hPa as the standard. The 
barometric pressure differential also can be read in inHg units as shown in the 
illustration (1 hPa 
=
 0.03 inHg).
Pressure Sensor and Temperature Sensor Calibration
The pressure sensor and temperature sensor built into the watch are calibrated at the 
factory and normally require no further adjustment. If you notice serious errors in the 
pressure readings and temperature readings produced by the watch, you can calibrate 
a sensor to the reading of another device to correct the errors.
Important!
 Incorrectly calibrating the temperature sensor can result in incorrect readings.
Carefully read the following before doing anything.
– Compare the readings produced by the watch with those of another reliable and 
accurate thermometer.
– If adjustment is required, remove the watch from your wrist and wait for 20 or 30 
minutes to give the temperature of the watch time to stabilize.
To calibrate the pressure sensor and the temperature sensor
1.Take a reading with another measurement device to 
determine the exact current barometric pressure or 
temperature.
2. With the watch in the Timekeeping Mode, press 
C to 
enter the Barometer/Thermometer Mode.
3. Hold down 
A until the current temperature value starts 
to flash on the display. This is the setting screen.
 Before the temperature value starts to flash, the 
message SET Hold will appear on the display. 
Keep 
A depressed until SET Hold disappears.
4. Press 
C to move the flashing between the temperature 
value and barometric pressure value, to select the one 
you want to calibrate.
5. Use
D (+) and B (–) to adjust the calibration value in the units shown below.
            Temperature                         0.1°C (0.2°F)
            Barometric Pressure             1 hPa (0.05 inHg)
 To return the currently flashing value to its initial factory default setting, press 
B and D at the same time. OFF will appear at the flashing location for about 
one second, followed by the initial default value.
6. Press 
A to return to the Barometer/Thermometer Mode screen.
Barometer and Thermometer Precautions
 The pressure sensor built into this watch measures changes in air pressure, which 
you can then apply to your own weather predictions. It is not intended for use as a 
precision instrument in official weather prediction or reporting applications.
 Sudden temperature changes can affect pressure sensor readings.
 Temperature measurements are affected by your body temperature (while you are 
wearing the watch), direct sunlight, and moisture. To achieve a more accurate 
temperature measurement, remove the watch from your wrist, place it in a well 
ventilated location out of direct sunlight, and wipe all moisture from the case. It 
takes approximately 20 to 30 minutes for the case of the watch to reach the actual 
surrounding temperature.
Altimeter
The watch displays altitude values based on air pressure readings taken by a built-in 
pressure sensor.
How the Altimeter Measures Altitude
The altimeter can measure altitude based on its own preset values (initial default 
method) or using a reference altitude specified by you.
When you measure altitude based on preset values
Data produced by the watch’s barometric pressure sensor is converted to approximate 
altitude based on ISA (International Standard Atmosphere) conversion values stored 
in watch memory.
When you measure altitude using a reference altitude specified by you
After you specify a reference altitude, the watch uses 
that value to convert barometric pressure readings to 
altitude.
Barometric
pressure
differential
pointer
Barometric
pressure
differential
pointer
−0.15
0
0.15
−5
0
5
inHg values
hPa values
Current pressure 
less than most 
recent measured 
pressure
Current pressure 
greater than most 
recent measured 
pressure
−0.15
0
0.15
−5
0
5
inHg values
hPa values
Current pressure 
less than most 
recent measured 
pressure
Current pressure 
greater than most 
recent measured 
pressure
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