User Manual

page 3page 6
UNITS
BATTERY ICON
4. Aim the ESL-20 at object. To approximate true
rpm, rapidly increase the flash rate by pressing
x2 until multiple images of the feature or mark
appear almost frozen.
Use or v to adjust the flash rate until the images
of the feature or mark appear frozen.
By holding or v switch, the flash rate changes
more rapidly the longer the switch is held down,
then resets 1.5 seconds after it is released.
Advanced users: After you release the or
v switch,
the rate of change is indicated by a flashing digit.
The place of the flashing digit advances from second
to third as the switch is held longer. While a digit is
flashing, press the phase shift switches < or > to
move the place of the flashing digit higher or lower.
Then press or
v switch to change the flash rate by
that amount.
5. Confirm true rpm by pressing ÷2 until a single image appears. Then
press ÷2 again. If a single image appears again, press x2 for true rpm.
If true rpm cannot be confirmed repeat steps four and five.
v
v
v
v
BOTTOM VIEW
BATTERY INDICATOR
PHASE SHIFT
BY 1° PER CLICK
OR HOLD
INPUT
OUTPUT
AC ADAPTER/CHARGER
2X SPEED
4X SPEED
TRUE RPM
1/2 SPEED
1/4 SPEED
UNITS
MEMORY LOCATIONS 1-19POWER ICON
BATTERY ICON
EXTERNAL
TRIGGER ICON
Specifications
Recharging the Battery
IMPORTANT! Use the provided AC adapter/charger
exclusively and plug into the correct AC output; others will
cause damage.
When the Battery icon flashes on the display, turn off the unit and
connect to the AC adapter/charger. The indicator light near the On/Off
button will flash and turn solid as the unit is charged. The indicator will
go off when the strobe is fully charged.
BATT
Accuracy ±0.007%, ±1LSD
Power NiMH rechargeable battery
Display 12mm, 5 digit LCD
Light Source LED Array
Phase Shift 0 – 359° in 1° increments
Flash Rate Coarse Adjust Press x2 or ÷2
Flash Rate Fine Adjust Press v or
(adjustable rate)
Synchronous Output NPN Open collector 30V, 10mA max., 100 µs pulse width
Synchronous Input Low level: 0~0.8VDC, High level: 2.5~30VDC,
or use with NPN open collector output,
50µs minimum pulse width, negative edge trigger
Tripod Thread ¼ - 20 UNC
Operating Temperature 0 – 45°C
Storage Temperature -10 – 50°C
Weight 1.2 lb/540 g
Standard Accessories Carrying case, AC Adapter/Charger
v
Range Resolution
6.0 – 9999.9 fpm/rpm ±0.1 fpm/rpm
10000 – 120000 fpm/rpm ±1 fpm/rpm Display flashes over 100000 rpm
> 120000 fpm/rpm “E” on Display (Strobe cut-off)