Using The Chronograph; Time Measurement - Citizen 0S80 Instruction Manual

E) USING THE CHRONOGRAPH
This chronograph is able to measure and display time in 1/20 second timing up to maxinum of 11 hours 59
minutes 59 seconds 95.
Measuring time with the chronograph
1. Press button "B" to change the watch to the chroonograph mode.
The small second hand stops at zero position, and changes to the chronograph 1/20 second hand.
2. The chronograph can be started and stopped each time button "A" is pressed.
The chronograph 1/20 second hand stops at zero position 30 seconds after starting.
When button "A" is pressed to stop the chronograph, the chronograph 1/20 second hand advances
rapidly to display the measured time.
3. Pressing button "B" resets the chronograph and all chronograph hands return to zero position.
RESET
F) CHRONOGRAPH RESET (INCL. AFTER REPLACING BATTERY)
This procedure shoud be performed when the chronograph second hand and the chronograph 1/20
second hand do not return to zero position after the chronograph has been reset, and including after the
battery has been replaced.
1. Pull the crown out to the 2nd position.
2. Press button "A" to set the chronograph second hand to zero position.
3. Press button "B" to set the chronograph 1/20 second hand to zero position.
The chronograph hand can be advanced rapidly by continuously pressing button "A" or "B".
4. Once the hand have been zeroed, return the crown to the normal position.
5. Press button "B" to check that the chronograph hands are reset to zero position.
* Do not push the crown to the normal position while the chronograph second hand and the chronograph
1/20 second hand return to zero postion. Each hands stop on the way when crown are returned to normal
position and these positions are recognized as zero position.
" A "

TIME MEASUREMENT

" A "
STOP
" A "
" B"
" B "