Omega omegaette hht=1501 ユーザーズマニュアル
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3.4. Use as an Event Counter with External Light Source
a. Press the unit button several times to select the unit of "No. O"
(counts). The "O" symbol is used to instruct users that external light
source is required.
b. When the symbol "No. O" appears, the tachometer reset the upper
clock to 00:00 and start counting the pulses it detects. (Auto-power-
off is automatically disabled)
c. To stop counting, press the START button once.
d. To reset counts to zero, press the function(right) button.
(counts). The "O" symbol is used to instruct users that external light
source is required.
b. When the symbol "No. O" appears, the tachometer reset the upper
clock to 00:00 and start counting the pulses it detects. (Auto-power-
off is automatically disabled)
c. To stop counting, press the START button once.
d. To reset counts to zero, press the function(right) button.
3.5. Use as an Event Counter with Internal Red LED
a. Press the unit button several times to select the unit of "No. "
(counts).
b. When the symbol "No." appears, the tachometer reset the upper
clock to 00:00 and start counting the pulses it detects (Auto-power-
off is automatically disabled).
c. To stop counting, press the START button once.
d. To reset counts to zero, press the function(right) button.
(counts).
b. When the symbol "No." appears, the tachometer reset the upper
clock to 00:00 and start counting the pulses it detects (Auto-power-
off is automatically disabled).
c. To stop counting, press the START button once.
d. To reset counts to zero, press the function(right) button.