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3B SCIENTIFIC

PHYSICS

Light barrier U11365

Instruction sheet

01/10 Hh/570012

1. Safety instructions

• When using the equipment in conjunction with

a laser source, strictly observe the stipulated

safety regulations.

• Never look directly into the laser beam.

2. Scope of delivery

1 Light barrier

1 Stand rod, length: 120 mm

1 8-pin mini DIN connection cable, length: 1 m

1 Knurled screw M6x1

3. Description

The light barrier can be used in two operating

modes.

1. Internal light barrier mode: light barrier with an

infrared light source and an infra-red detector with

a very short signal delay for measuring time inter-

vals with moving bodies, e.g. during free fall, in air

track experiments and for pendulum oscillations,

as well as for counting pulses.

2. Laser light barrier mode: laser diode detector

built in at the side for setting up a wide-range

barrier along with a laser pointer, e.g. during sport-

ing events.

The light barrier is equipped with a built-in LED

function display: beam broken = 1 (TTL high).

When disabled or when the beam is interrupted,

the LED function display comes on.

The narrow barrier arm in front of the infra-red

source includes a sliding mechanical shutter that is

used for disabling internal light-barrier mode and

activating laser light -barrier mode.

4. Technical data

Separation of prongs: 82 mm

Rise time: 60 ns

Spatial resolution: < 1 mm

Time resolution: 10 µs

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3B SCIENTIFIC 1
PHYSICS 1

Summary of Contents

Page 1 - PHYSICS

3B SCIENTIFIC® PHYSICS 1 Light barrier U11365 Instruction sheet 01/10 Hh/570012 1. Safety instructions • When using the equipment i

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3b-scientific Photo Gate User Manual

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