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9
IP-RPM
,
or
M function
Press
button momentarily to select through RPM
for 4-stroke, RPM
for 2-stroke and
DIS, and RPM
M for special 2-stroke waste ignition engine
Trigger level defaults at 3. Press the Level (RANGE) button momentarily to select another trigger
level. If the RPM reading becomes unstable, select lower sensitivity to avoid electrical noise. If the
reading shows zero, select higher sensitivity. Number of Bar-graph pointer is used to indicate
sensitivity selected.
Backlighted LCD display (Model 319 only)
Press the SELECT button for 1 second or more to toggle the LCD backlight. The backlight will
also be turned off automatically after 32 seconds to extend battery life.
Hold
The hold feature freezes the display for later view. Press the HOLD button momentarily to toggle
the hold feature.
Manual or Auto-ranging
Press the RANGE button momentarily to select manual-ranging, and the meter will remain in the
range it was in, the LCD
turns off. Press the button momentarily again to step through the
ranges. Press and hold the button for 1 second or more to resume auto-ranging.
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