INTRODUCTION - TM-9-6625-2465-150007

SECTION 1

INTRODUCTION

1-1. PURPOSE.

The Type 1531 Strobotac is a versatile flashing-light source that

is used to measure the speed of fast-moving objects or to produce the

optical effect of stopping or slowing down high-speed motion for purposes

of observation, analysis, or high-speed photography.

1-2. DESCRIPTION.

1.2.1 GENERAL.

The Type 1531 is a portable electronic stroboscope that emits a

high-intensity, short-duration, flash of light. The instrument includes

a strobotron lamp and reflector, an electronic pulse generator that con -

trols the flashing rate, and a line-operated power supply. A built-in

calibration system utilizes the power-line frequency for checking and

adjusting the flashing -rate calibration,

The strobotron lamp and reflector assembly is mounted on a swivel

arm which can be pivoted 180; the reflector can be turned 360. Thus,

the operator can conveniently aim the light beam in almost any direction

while the instrument is hand-held or mounted in a stationary position. The

high -intensity light will adequately illuminate most moving objects - even

in relatively high ambient light - and it permits observation of distant

and difficult-to-illuminate objects, in otherwise inaccessible areas.

The Type 1531 Strobotac is housed in the General Radio Flip-Tilt

case, which protects the instrument when it is not in use and also serves

as a convenient support for the instrument during operation (see Figure

1 -1). When in use, the instrument can be held in the operator's hands.

placed on any convenient flat surface, mounted on a conventional tripod,

or supported by the neck strap provided.