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현재위치 : Home > 회전수측정기 > Lutron Stroboscope (5 종)

Laser Pen Stroboscope 회전수 측정기
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High Performance Pen-sized Digital Stroboscope.

The perfect tool for studying motion, vibration and rotation in various objects, ideal for motion control or sound and vibration engineers.

Uses a high intensity super bright white LED instead of the more common xenon light source. Other LED color models are available.

The small size and battery power source make the Pen-Strobe a great portable tool for on-site studies. And its wide frequency range of 2Hz to 2kHz (120-120,000 RPM/FPM) makes it possible to study even high frequency vibrations, such as tweeter resonances.

 

Easy to use, high performance and portable as well!

The Pen-Strobe is simple to use, with its micro-controller design and just two buttons to control the increment, sweep, memory, reset and on/off functions. The instrument has a high resolution of 0.12Hz increments and a very wide revolving frequency range of 2Hz to 2kHz. The frequency range and accuracy make this a very high performance instrument. It also includes a bright flashlight mode.

Housed in a very small package similar to a laser pointer, the Pen-Strobe is powered by two standard AAA 1.5V batteries. The Pen-Strobe comes with batteries in a black instrument case with a foam insert for protection during shipping and for storage. Its small, portable size and power source allow you to take the stroboscope anywhere.

The Pen-Strobe is mainly used to study motion, not for absolute measurements since it has no frequency or RPM/FPM read-out. An optical sensor/tachometer can be used to measure the blink rate of the Pen-Strobe. The Pen-Strobe includes a memory function which stores the latest setting for later retrieval or measurement.

 

A few examples of applications: Pen-Strobe in use. Woofer cone and surround excursions are easily seen under the stroboscope light.

  • Study motion and resonance's of loudspeaker components such as cones, surrounds, spiders, litz wires etc.
  • Analyze panel vibrations and cone breakup modes with the use of surface indicating materials, i.e. talc or cork.
  • The wide frequency range up to 2kHz and the high resolution allow even tweeter motions to be observed.
  • Test if systems, multiple loudspeaker drivers or arrays are in phase.
  • High speed balance or synchronization of reciprocating or rotating parts.
  • Production and installation quality control and troubleshooting.
  • Portable sales tool to show customers the performance of your components, products or installations.
  • Other applications include vibration analysis of electronic components on printed circuit boards and PCB panels.

 

The Pen-Strobe's two buttons control all functions.

Press both buttons down at the same time for more than one second, and the stroboscope toggles on or off. When the instrument is on, a short press of a button, less than a second, steps one unit (0.12Hz) up or down at a time. A button held down for more than one second sweeps automatically up or down over the revolving frequency range while the button is pressed.

When the Pen-Strobe is turned off, the memory function stores the latest setting and it goes into a sleep mode with very little current draw. The Pen-Strobe returns to the stored setting when it is turned on again. To reset the Pen-Strobe to the lowest frequency setting (2Hz), the two buttons are held down for more than three seconds when turning on the Pen-Strobe.

An auto shutdown after approximately 25 minutes saves battery life if left on unintentionally.

 

Technical data:

  • Micro-controller design with two buttons for increment, sweep, memory, reset and on/off functions.
  • Range: 2Hz - 2kHz (120 - 120,000 RPM/FPM), revolving up or down.
  • Automatic sweep speed: 69 seconds for total range.
  • Resolution: 62.5ns time base (16MHz?.5%) - 0.12Hz steps up to 1.4kHz, linearly increasing to 0.24Hz at 2kHz.
  • Light source: Super bright LED, 5mm diameter.
  • Emission color: White (x=0.310, y=0.320 chromaticity coordinates).
  • Luminous intensity: 13.5 cd peak, 0.42 cd stroboscope (1/32 on-time), 2.7 cd flashlight mode (1/5 on-time).
  • Directivity: 20 degrees (2).
  • Operating temperature range: 0 - 40?C (32 - 104?F).
  • Housing: Black, all metal (brass, aluminum), pen shaped, 153mm (6") long, 13mm (?quot;) diameter.
  • Power source: Two 1.5V AAA (LR03) alkaline batteries.
  • Automatic power off after 25 minutes if no keys pressed.
  • Battery consumption: Stroboscope/flashlight/off mode - typically 35mW/215mW/35. Battery life typically more than 50 hours. The power draw in off mode does not degrade battery shelf-life.

 

Some current Pen-Strobe users:

Peerless, Polk Audio, Samsung, MTX, AAD Loudspeakers, Bose, Harman Consumer Group, Harman-Motive, Harman Multimedia, Credence Speakers, Etymotic Research, Panasonic, Focal.JMlab, EVI Audio, Acoustic Expertise, Thiel, JBL, Infinity, Redrock Acoustics, Posh Speaker Systems, Triad Speakers, Phoenix Gold, Finch & Marsh, Dupont, Robert Bosch Corp., Rockford Fosgate, Blaupunkt, Telex, Alumapro, IBM, etc...

 

Pen-Strobe in case with batteries and user's guide. Click for larger picture (76kb)

Pen-Strobe User's Guide

Getting Started

Insert the batteries
Unscrew the end cap of the Pen-Strobe and insert the batteries as shown in the figure below. Screw the end cap back on.

Replace worn-out batteries
When the Pen-Strobe does not turn on (only blinks dimly a few times), replace the batteries. The Pen-Strobe uses two standard 1.5V AAA (LR03) alkaline batteries. To replace batteries, unscrew the end cap of the Pen-Strobe and remove the batteries. Insert the new batteries as shown in the figure above and screw the end cap back on.

How to hold the Pen-Strobe
Hold the Pen-Strobe like a pencil,

between your thumb and
forefinger, with the light
pointing away from you.

Use your forefinger to
press the buttons.

Button functions
The button closest to the light is the "up" button and the button farthest from the light is the "down" button. See figure below.

How to turn the Pen-Strobe ON or OFF
To turn the Pen-Strobe on or off, press both buttons at the same time for more than one second until the light turns on or off, and then release the buttons. When you turn the Pen-Strobe back on, it will return to the latest setting.

Note the automatic power off feature after 25 minutes if no keys have been pressed.

How to reset the Pen-Strobe to 2Hz
To reset the Pen-Strobe to its lowest frequency setting (2Hz), continue to hold both buttons down after you have turned on the Pen-Strobe, until the blink rate changes to 2Hz, and then release the buttons. If you continue to hold both buttons down, the Pen-Strobe will cycle off and on at this setting (2Hz).



Using the Pen-Strobe

Change the blinking rate
Pressing the buttons on the Pen-Strobe causes the blinking rate (frequency) to increase or decrease. The "up" button will increase the blinking rate, the "down" button will decrease the blinking rate.

One frequency step at a time
Press the "up" or "down" button for less than a second to step up or down one frequency unit (0.12 - 0.24Hz).

Automatic sweep of frequency range
Hold the "up" or "down" button down continuously to sweep up or down in frequency range. Release the button to stop at a frequency.

Note that when you have swept through the entire frequency range, you will reach flashlight mode and then the cycle will repeat.

Flashlight mode
To make the Pen-Strobe shine a brighter light (flashlight), press the "down" button once for less than a second after you have reset the Pen-Strobe. The flashlight mode marks the point in the frequency range between the highest and lowest frequencies.

Technical Information

  • Micro-controller design with two buttons for increment, sweep, memory, reset and on/off functions.
  • Range: 2Hz - 2kHz (120 - 120,000 RPM/FPM), revolving up or down.
  • Automatic sweep speed: 69 seconds for total range.
  • Resolution: 62.5ns time base (16MHz?.5%) - 0.12Hz steps up to 1.4kHz, linearly increasing to 0.24Hz at 2kHz.
  • Light source: Super bright LED, 5mm diameter
  • Emission color: White (x=0.310, y=0.320 chromaticity coordinates)
  • Luminous intensity: 13.5 cd peak, 0.42 cd stroboscope (1/32 on-time), 2.7 cd flashlight mode (1/5 on-time).
  • Directivity: 20 degrees (2)
  • Operating temperature range: 0 - 40?C (32 - 104?F)
  • Housing: Black, all metal (brass, aluminum), pen shaped, 153mm (6”) long, 13mm (?#148;) diameter.
  • Power source: Two 1.5V AAA (LR03) alkaline batteries
  • Automatic power off after 25 minutes if no keys pressed.
  • Battery consumption: Stroboscope/flashlight/off mode - typically 35mW/215mW/35. Battery life typically more than 50 hours. The power draw in off mode does not degrade battery shelf-life.

Care of the Pen-Strobe
The Pen-Strobe is not waterproof. Do not use or store the Pen-Strobe under wet conditions. Remove batteries from instrument if stored for a longer period (6 months or more) to avoid battery leakage problems.

Warranty
MLS Instruments warrants this product to be free of defective materials or workmanship for a period of one (1) year from the original purchase date. This warranty does not cover product subjected to abuse, misuse, neglect or accidental damage. Removal of the serialized label or any modifications to the product voids this warranty.

During the above one year warranty period, your MLS Instruments product will be either repaired or replaced with a reconditioned comparable unit at MLS Instruments option when the product is returned, postage prepaid, to MLS Instruments. The repaired or replacement unit will be in warranty for the remainder of the original warranty period or for six months, whichever is longer. Other than the postage requirement, no other charges will be made for such repair or replacement.

Warnings!

Blinking light causes the appearance of stop-motion in moving parts. Do not touch object being observed.

Bright light can cause eye damage.
Do not look directly into light source.

Blinking light may induce an epileptic seizure in those predisposed to this type of attack.

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