background image

– 4 –

0

4

PHASE de

Delay time between the internal trigger signal 
and the flash (in degrees relative to the 
frequency).

0

5

DIV

Pulse divider, maximum value 255 

0

6

OPT

Trigger signal edge selection

0 = positive edge 
1= negative edge 

0

7

Display

For units, see numbers 8-10.

0

8

FPM

Flashes per minute.

0

9

1/min

Rotations per minute

10

Hz 

Frequency of motion per second.

11

RANGE

External trigger signal is causing the flash 
frequency to be too high

12

EXT

External trigger signal selected

13

INT

Device is generating flash frequency.

14

LOBAT

Battery running low 

NOTE: 

A parameter which has been set to differ frm the default setting 
flashes during operation.

3.2 Mode 

Keys

On/Off 

Press and hold down the button for approx. 
3 seconds

Mode Button

Each time the Mode Button is pressed, the 
gauge switches to the next setting in the 
numerical order (1–10, see pages 3 & 4).

NOTE: 

Some modes only effect the functioning of the device when
external triggering is employed.

Increases the currently set value. 

Speeds up when this button is held down

.         

Halves the currently set value. 

Speeds up when this button is held down.

Doubles the currently set value. 

Speeds up when this button is held down

.

Lowers the currently set value. 

Speeds up when this button is held down

– 17 –

Helpful Hints

The most commonly used formulas are indicated by an asterisk.

The values for “X,” “Y” and “Z” are taken in descending order. For 
example, the value for “X” is greater than the value for “Y.”

The values are for successive singular harmonic images. Do not use 
multiple images.

If two points are recorded, equation (1) Y gives only approximate 
results. Equations (2) with (4) and (3) with (5) are more precise, but 
error can be introduced due to the rounding.

If three points are found, Equation (6) is the most commonly-used 
formula.

For completeness, equations (9) through (21) offer mathematical 
derivations and condensed versions of Equation (6). Also included 
are the formulas for calculating Sx, Sy and Sz.

11.0 M

ULTI

-K

EY

C

OMBINATION

F

EATURES

M

+

*

\

Key

Description of Functions

M

+

Pressing both buttons simultaneously resets
the gauge to its default settings.

+

Pressing both buttons simultaneously 
activates and deactivates the Button Lock.

M

+

Pressing both buttons simultaneously 
switches between internal and external 
trigger signals.

Содержание DS-2000LED

Страница 1: ...OING WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED INCLUDING BUT NOT LIMITED TO THE WARRANTY OF MERCHANTABILITY AND FITNESS FOR ANY PARTICULAR PURPOSE OR APPLICATION ELECTROMATIC SHALL NOT BE RESPONSIBLE NOR LIABLE FOR ANY CONSEQUENTIAL DAMAGE OF ANY KIND OR NATURE RESULTING FROM THE USE OF SUPPLIED EQUIPMENT WHETHER SUCH DAMAGE OCCURS ORIS DISCOVERED BEFORE UPON OR AFTER REPLAC...

Страница 2: ... and cloth looms Motors fans pumps and turbines Calibration and inspection equipment Monitoring laboratory research applications Models Available DS 2000LED operates from Internal Rechargeable Battery or AC Power DS 2000LED OT same as above but includes external trigger output 2 0 CONTENTS Stroboscope Operating manual Calibration certificate Batteries Case OT Model Only Cable with plug for trigger...

Страница 3: ...upply 3 x AA size disposable batteries or 3 x NiMH rechargeable batteries Continuous use time NiMH approx 11 h 6 000 FPM Disposable approx 6 h 6 000 FPM HOUSING Material Aluminium ABS Heavy duty design Dimensions 191 x 82 x 60 mm 7 5 x 3 2 x 2 4 inch Weight Approx 400g including batteries AMBIENT CONDITIONS Temperature Range 0 45 C 32 113 F Humidity Protection code IP65 Additional information for ...

Страница 4: ...alves the currently set value Speeds up when this button is held down Doubles the currently set value Speeds up when this button is held down Lowers the currently set value Speeds up when this button is held down 17 Helpful Hints The most commonly used formulas are indicated by an asterisk The values for X Y and Z are taken in descending order For example the value for X is greater than the value ...

Страница 5: ...ation 6 RPM 2AB A B A B 2 2x2 400x1 200x 2 400 1 200 2 400 1 200 2 14 400 Where A X Y 7 200 4 800 2 400 And B Y Z 4 800 3 600 1 200 Therefore the true speed of the object is 14 400 RPM To help further illustrate this point the figure below shows the harmonic relationship of the four images found in this example If TWO points X and Y are recorded 1 RPM XY X Y 2 RPM Sx Sx 1 X Y 3 RPM S S 1 X Y 4 Sx ...

Страница 6: ...s been set to differ from the default setting flashes during operation NOTE Pressing the and buttons simultaneously resets the strobe to its default settings NOTE Some modes only effect device functioning when external triggering is employed NOTE Static images are not only created at a precisely corresponding flash frequency but also at multiples and fractions of this frequency 15 The harmonic ima...

Страница 7: ...rvation position within a motion cycle PHASE deg Phase shift adjustment between the internal trigger signal and the flash in degrees relative to the frequency This function enables you to set a fixed angle between the internal trigger signal and the flash Example The position of observation can be adjusted extremely precisely without altering the flash frequency You can shift the observation posit...

Страница 8: ...determine the true RPM and or the reciprocation rate of an object This is done by visually freezing the object s movement and then reading the LCD display As with all stroboscopes it is important to verify that this frozen image is not a harmonic of the object s actual rate Helpful Hints Knowing the approximate rate of the object in advance gives you a useful starting point If the object has a uni...

Страница 9: ...d stroboscope would regularly fl ash too soon With the PHASE deg function you can adjust the delay so that the fl ash position of the stroboscope is altered by a set angle This setting is independent of the current speed ofrotation which means that the stroboscope will flash at the required position even during the start up process or when the speed of rotation is fluctuating 12 9 0 HARMONICS If y...

Страница 10: ...fely and easily To make an object appear to move in slow motion you need to strobe it at a rate slightly above or slightly below its actual speed or any harmonic of its speed as discussed below Helpful Hints The speed at which the object appears to move can be determined by subtracting the flash rate from the object s actual rate Example If an object is rotating at 1 000 RPM and you strobe it at a...

Страница 11: ...E BY ELECTROMATIC Models DS 2000LED DS 2000LED OT O P E R A T I N G M A N U A L Distributed by ABQ Industrial LP USA Tel 1 281 516 9292 888 275 5772 eFax 1 866 234 0451 Web https www abqindustrial net E mail info abqindustrial net ...

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