Checkline DT-725 - Manual (Page 3)

– 3–
3.0 B ATTERY USAGE (DT-725 ONLY )
Model DT-725 is equipped with an internal, lead acid, rechargeable battery that
provides one hour of continuous operation.
NOTE: Charge battery for approx. 15 hrs. before using the instrument
for the first time.
When battey power is low, the Low Batt indicator on the display will light up.
3.1 Charging the battery
1. Turn power off.
2. Instert AC adapter into the
receptacle in the bottom of the
instrument handle..
3. Approximate charging time:2 hours.
NOTE: The charger adapter may also be
used to power the instrument
continuously.
3.2 Replacing the battery
The life of the built-in battery should be approximately 300 charges. When
the time period between charges becomes increasingly shorter, replace the
battery.
– 6–
5.0 M EMORY
When the strobe is turned off and on again at a later time, it will start to flash at
the previous displayed rate regardless if the setter has been moved or not.
6.0 T RUE RPM
All strobes give the illusion of stopped motion when flashing in submultiples of
the true speed.
To obtain the correct rpm, turn knob from highest fpm downward. When the first
single image appears, read the true rpm. To verify it, press the “1/2” key. A single
image will appear again.
Rotation of shaft
(rpm)
Number of
flashes (rpm)
Flashes/
rpm shaft
Number of
stopped images
at
1,500 rpm
6,000 4 times 4
4,500 3 times 3
3,000 2 times 2
1,500 1 times 1
750 1/2 times 1
500 1/3 times 1
AC adapter/charger receptacle
CAUTION
Only charge the
instrument using the
AC adapter/charger
provided.