vlahova ST3830 Handbuch Seite 7

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Features
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Time, calendar, alarm 1 chronograph and countdown;
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Turn on/ off, mute key, temperature display, low battery indication;
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Three row display, resolutions of 1/100 a second, count up max to 10 hours;
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30 memory records with split and lap times.
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Buttons
[A] START/STOP
[B] LAP/SPLIT x RESET
[C] RECALL
[D] MODE
OPERATION INSTRUCTIONS
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Shutdown operation
Before turning off the stopwatch, please make sure the data in
[stopwatch]and [countdown] mode are all cleared, then enter [clock]
mode, press and hold [A] and [B] keys for 3 seconds, the interface displays "OFF", the clock makes 3
sounds. Afterwards, it is turned off. If you release the two keys within 3 seconds, the interface will go
back to [clock] mode. During the turning off period, if the stopwatch and countdown is running or all
data in stopwatch or countdown mode are not all cleared, the interface will display "alert" and the
watch will beep. When you release the buttons, the interface will get back to [clock] mode.
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Turn on
To turn on the watch, press and hold [D] key for 2 seconds.
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Switching between modes
In clock mode, press the key [D] to switch between the modes in the following sequence:
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Clock mode.
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Alarm / Temperature mode.
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Stopwatch mode.
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Countdown mode.
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Time / Calendar settings, button mute settings
While in the clock mode, press and hold the [C] key for 2 seconds to enter the [time] setting.
"Seconds" start to flash; then press [B] key to switch between „seconds →minutes → hours → years
→ months →days → sounds". When the digits are flashing, press [A] to increase the value by 1. Long
press [A] to increase the value rapidly. When you switch to the „sound" mode, you can set the
loudness of the key sound. Press [A] to select between „on" or „off". „On" indicates that the sound is
active. There is beep sound when pressing the keys. „Off" indicates that the sound is inactive. There is
no sound when pressing the keys. After finishing setting, press [C] once to exit [time] setting. (The
week is updated automatically, there is no need to set it.
To switch between the display of year/month, day, week Press [A] in the time mode. To switch
between the 12/24 hour system, press [B].
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Alarm settings
In Alarm / Temperature mode, press and hold [C] for 2 seconds to enter the alarm setting mode.
"Hour" starts to flash. Press [B] to switch between „Hour → Minute". When the digits start to flash,
press [A] to increase the value by 1. Keep the button pressed to increase the value quickly. When the
setting is finished, press [C] to exit alarm setting mode. Press [A]to turn on/off the alarm.
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Switching between °C and °F
Switch between °C and °F by pressing [B] in alarm / temperature mode.
ST3830 – MANUAL (EN)
7