Checkline DT-725 - Manual (Page 4)

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4.0 O PERATION
4.1 Internal Triggering
1. DT-721 only: Firmly plug the power cord into a 100 VAC (Japan),
120 VAC (US) or 230 VAC (Europe) power source.
DT-725 only: Charge battery for approx. 15 hrs. before using strobe
for the first time (see section 2.3).
2. Aim light beam at the object under observation. The best distance
between the strobe and moving object is approximately 2 ft (61 cm).
3. Measure rpm by turning setter. Turn the setter to adjust the flashing rate
to the rotational speed of the object. To reach the desired rate faster, use
the 1/2 or x2 switches (see Section 2.1).
4.2 External Triggering
1. Connect wires according to connector
pin designation:
Tip: signal
Sleeve: Gnd (ground)
2. Pull power trigger switch and lock it.
When the ext phone jack is inserted
in unit, the strobe automatically switches
from the internal mode to the external.
3. The strobe will flash every time the sensor
puts out a pulse. Input signal requirements
are listed below:
a. 12 – 24 VDC thru a 3-wire NPN sensor.
(Requires external power supply).
b. 12 VDC thru a 2-wire proximity sensor.
(Leakage Current 1 mA max. Load
current 8 mA min.)
c. Switch or Relay Contact.
4. If the input signal frequency exceeds upper
or lower limits, the alarm mark will be
displayed and the strobe will stop flashing.
ELECTROMATIC CHECK • LINE ®
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4.3 Synchronous Output Signal
The Synchronous output signal appears on the tip of the output phone jack.
See below
4.4 Using A Tripod
1. To mount the strobe on a tripod or any other mounting surface, place
a 1/4– 20unc screw, 8mm or shorter, through the tripod screw hole on
the bottom.