Checkline DT-329 User Manual

DT-329

LED Linear Stroboscope

Operation Manual

Read manual thoroughly prior to operation.
Use instrument only after reading the complete manual.
Follow all safety precautions.

Safety Precautions

Avoid the following.

Please be sure to closely follow all safety precautions.

Be sure to read the entire instruction manual thoroughly before initial set-up, operation and maintenance.
The instruction manual provides two grades of safety warnings: "Danger" and "Caution".
Follow these precautions.

Danger

"Danger" marking indicates possible death, severe injury or fire if the user disregarded.

Caution

"Caution" marking indicates possibility of severe bodily injury or object damage if operated improperly.

This warning indicates a prohibited operation.

Execute this warning.

Never use in flammable
environments.

May result in fire or explosive.

Danger

Never look directly into the LED light
source.

May result in eye injury.

Do not drop.

May cause damage or injury.

Do not alter, modify or dispose of
improperly.

May cause damage, accidents and void warranty.

To clean, gently wipe with a soft
cloth.

No volatile chemicals such as usage Benzene, Thinner,
or Alcohol.

Caution

Direct sunshine, condensation, dust or caustic
Chemicals, combustible gases
Oils, water, salts

Operate within 0-35°C(32-95°F),
35-85%RH

May alter operation of the unit.

DT-329 case may become excessively hot

when used continuously long time.
Never use while touched directly as possession
by the hand etc.

- Contents -

1

Summary

2

Product Inspection and Preparation

2.1 Confirmation of product packaging

2.2 Removal of protective sheet................................

3

Names and functions of the components

3.1 DT-329 Unit

3.2 Operation panel

3.3 LCD Display

3.3.1

3.3.2

3.3.3

3.3.4

3.3.5

4

Function Instructions

4.1 Power on/off

4.2 Mode Selection

4.3 Internal flashing mode

4.3.1

4.3.2

4.3.3

4.3.4

4.3.5

4.3.6

4.3.7

4.4 External Trigger Mode

4.4.1

4.4.2

4.4.2.1 “Delay time” setting

4.4.2.2 “Delay angle” setting

4.4.3

4.5 Parameter Setting Instruction

4.5.1

4.5.2

4.5.3

4.5.3.2 Delay angle setting

4.6 Connector of External input/output................................

4.6.1

4.6.2

4.6.3

5

Specifications

6

Dimensions

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Display Names and Descriptions
Main data display
Sub data display
Units of Measure: Display
Setting project display

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Instruction for Internal flashing mode
Changing Units of Measure in Internal Mode
FLASH function
Flash rate and frequency “Internal Mode”
Multiply / Divide by 2 Function
Phase Shift (Angle)
Flash Pulse Duration (FOCUS) setting

External trigger mode: LCD display information
Flash Delay Setting

Units of Measure- Changing from FPM to Hz................................

Measurement range setting
Trigger Edge setting (External Mode)

Delay setting................................

Connector Pin Assign

External Pulse Input................................

External pulse output

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1111
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2323

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25

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2525
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2525
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2626

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2929

1 Summary

The DT-329 LED Linear Stroboscope is AC powered precision instrument used to illuminate wide spot and
measure the rotational speeds of objects with a certain speed and a constant period.
By illuminating the rotating object with the DT-329, the moving object appears to remain still when the
flashing rate of the DT-329 is equals the rotational speed of the target object. This allows inspection of
rotating and moving parts, printed matter, labels, gears, shafts and others. Additionally, the target object can
appear to rotate back or forth (frequency) by utilizing the phase shift function.

Main features

Wide spot range- 23.62 in x 15.75 in (600mm x 400mm)
=>refer to 5. Specifications

Wide flash range- 60 to 120,000 FPM
=> refer to 4.3.4 Flash rate and frequency setting in Internal mode

High brightness- 1,950 lux at 120,000 FPM and 7.87 in (20cm)
=>refer to 5. Specifications

Two units of measure- FPM (flashes per minute) and Hz.
=>refer to 4.3.2 Changing Units of Measure in Internal mode

Multiply or Divide by 2- function to quickly adjust flash rate
=>refer to 4.3.5 Multiply/Divide by 2 Function

Phase Shift function - “+3°”, “-3°”
=> refers to 4.3.6 Phase shift (Angle)

Adjustable flash duration – (FOCUS) Time can change for 0.1° each time as in the range of 0.1° / 360° -

2.5°/360°
=> refer to 4.3.7 Flash duration (FOCUS) setting

External input/output port-Synchronization of flash rate with external pulse, or flash rate pulse signal output
=>refer to 4.4 External trigger mode, 4.6 Connector of External input/output

1

1. O

ne (1)

LED

linear

stroboscope

2 Product Inspection and Preparation

2.1 Confirmation of product packaging

Confirm the following five parts in your DT-329 packaging:

3. One (1) External output connector (3 pins)
SRCN6A13-3P [JAE]

5. Instruction Manual

2.2 Removal of protective sheet

Remove protective sheet covering the operation panel.

2. One (1) External input connector (7 pins)
SRCN6A16-7P [JAE]

4. One (1) AC cable

Operation Panel

2

3 Names and functions of the components

3.1 DT-329 Unit

LED light source (24 totals)

Outlet (AC power)

Handles

Mounting arm

Power switch

External

input

connector

External

output

connector

Flash rate setting dial

Operation keys

(9 totals)

3

LCD indicator display

3.2 Operation panel

2

3

4

5

6

No. Key Function Instructions

SE

SET

SE

×2

1/2

SE

FLASH

SE

SE

MODE

POWER

PHA SE+

PHA SE-

FOCUS

SE

SE

SE

SE

1

7

9

8

10

1 POWER Power the unit on or off
2 MODE

3 SET

4 ×2

5 1/2

6 FLASH

7 PHASE “+”

8 PHASE “-“

Select Internal /External/Parameter mode of operation

Unit change, Select parameter setting item, Store setting value.

Multiplies the flash rate/frequency by a factor of 2.

Divides the flash rate/frequency by a factor of 2.

Flash on and off
Advance image forwards 3 degrees at a time in internal mode.

In parameter setting mode, change setting value.
Retard image backwards 3 degree at a time in internal mode.

In parameter setting mode, change setting value.
Set flash rate or frequency.

CW; Increase flash rate/frequency.

9 Dial

CCW; Decrease flash rate/frequency.
(Turn dial “quickly” to drastically change value. Turn dial “slowly” to change value 1 digit.)
In parameter setting mode, CW or CCW rotating changes the setting value.

10 FOCUS

Adjusts the flash duration (flash pulse width) in Internal/External mode.

4

Unit set to Hz

min

min

Min

Auto Range

min

ms

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3.3 LCD Display

3.3.1 Display Names and Descriptions

Setting project

Sub data

3.3.2 Main data display

-Internal flashing mode: Displays flash rate.

-External trigger mode: Display external trigger frequency.

-*Parameter setting mode: Display LCD backlight setting (“P” or “LCD”)

*Refer to section 4.5 for detail.

3.3.3 Sub data display

Internal Flash Mode Display

-To change the degrees of phase shift, press PHASE + or PHASE - keys. The display will reflect the
cumulative angle of phase shift.

-“Flash Time” will be displayed when FOCUS key is pressed. The flash time (pulse flash duration) can then
be set using the dial to increase or decrease the flash time from 0 to 1.0 (0 - 1.0°).

External Trigger Mode Display

- Displays delay time setting. Refer to section 4.4.2 for detail.

*Parameter Mode Display

-Displays the following:

-Selected measuring range

-Delay time (in ms)

-Backlit LCD (ON or OFF)

*Refer to 4.5 “Parameter setting mode” for detail.

3.3.4 Units of Measure: Display

Digital display will show the following according to the unit of measure setting.

Unit set to FPM

(flashes/minutes)

Trigger Divider
Edge Delay Deg
Flash Time Mem

AveLastMinMax

Hz

Main data display

sec
hHz

Unit

Ｈｚ

Ｈｚ

ＨｚＨｚ

Flashing
(Blinking)

5

Auto Range

Auto Range

Auto Range

Auto

Range

Auto

Range

Auto Range

Auto Range

Auto Range

Choose delay time when delay

Auto Range

3.3.5 Setting project display

The following will be displayed, according to the mode of measure and *parameter settings

Trigger Divider
Edge Delay Deg

Flash Time Mem

AveLastMinMax

Internal flashing mode

Trigger Divider

Edge Delay Deg
Flash Time Mem
AveLastMinMax

Positive auto trigger

Trigger Divider

Edge Delay Deg
Flash Time Mem
AveLastMinMax

Negative auto trigger

Trigger Divider
Edge Delay Deg

Flash Time Mem

AveLastMinMax

Set the flash time
(duration)

Trigger Divider
Edge Delay Deg

Flash Time Mem
AveLastMinMax

Choose positive when set
trigger edge in *Parameter
setting mode

Trigger Divider
Edge Delay Deg

Flash Time Mem
AveLastMinMax

Choose negative when set
trigger edge in *Parameter
setting mode

Trigger Divider
Edge Delay Deg
Flash Time Mem
AveLastMinMax

set in *Parameter setting mode

* Please see section 4.5 for Parameter setting data.

Trigger Divider
Edge Delay Deg
Flash Time Mem
AveLastMinMax

Set the measuring
range in Parameter
setting mode*

Trigger Divider
Edge Delay Deg
Flash Time Mem
AveLastMinMax

Choose angle setting when
delay set in *Parameter
setting mode

6

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4 Function Instructions

4.1 Power on/off

Turn on Main Power Switch, then press “POWER” key to turn on unit. The unit will begin to flash in internal
mode and the display will indicate the flash rate (FPM = flashes per minute).

Operation Indication

Power off

POWER

Press and release

Press “POWER” key again to turn off unit. The display will turn off, and the device will stop flashing. Then
turn off the main power switch.

Operation Indication
Power on

POWER

Press and release

Auto Range
Trigger
Edge Deley Deg
Flash Time

Ave Last Min Max

Auto Range
Trigger
Edge Deley Deg

Flash Time

Ave Last Min Max

min
sec

hHz

min

sec

hHz

POWER

POWER

Auto Range
Trigger
Edge Deley Deg

Flash Time

Ave Last Min Max

Auto Range
Trigger
Edge Deley Deg
Flash Time

Ave Last Min Max

Display will indicate the
flash rate in internal
mode, and the LED light

min

source will begin

sec

hHz

flashing.

Display will turn off and
unit will stop flashing.

min
sec

hHz

4.2 Mode Selection

Press and release “MODE” key to toggle between INTERNAL, EXTERNAL and PARAMETER mode.

MODE doesn't change while flashing. Please stop flashing by pressing “FLASH" key.

Operation Indication

MODE

Press and release

to switch modes

Auto Range
Trigger
Edge Deley Deg

Flash Time

Ave Last Min Max

Internal flashing mode

min

sec

hHz

MODE

Auto Range
Trigger

Edge Deley Deg
Flash Time

Ave Last Min Max

min

sec

hHz

External trigger mode

MODE

Auto Range
Trigger
Edge Deley Deg
Flash Time

Ave Last Min Max

min

sec

hHz

Parameter setting mode

MODE

7

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ternal flashing

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4.3

Internal flashing mode

4.3.1 Instruction for Internal flashing mode

In

mode

Auto Range
Trigger
Edge Deley Deg

Flash Time

Ave Last

4.3.2 Changing Units of Measure in Internal Mode

Press and release “SET” key to toggle between FPM and Hz measuring unit.

Operation Indication

SET

Press and release

Auto Range
Trigger
Edge Deley Deg

Flash Time

Ave Last Min Max

min

sec

hHz

SET

min

sec

hHz

Auto Range
Trigger
Edge Deley Deg

Flash Time

Ave Last Min Max

Flashing time (Hz shown)
setting
Flash indicator

Unit (min or Hz)

Total phase shift angle

SET

min
sec

hHz

Auto Range
Trigger
Edge Deley Deg

Flash Time

Ave Last Min Max

min

sec

hHz

Measuring unit “FPM”

4.3.3 FLASH function

Press and release “FLASH” key to toggle between flashing on and off.

Operation Indication

FLASH

FLASH

FLASH

FLASHFLASH

Press and release

Auto Range
Trigger
Edge Deley Deg

Flash Time

Ave Last Min Max

min

sec

hHz

FLASH

Flashing off Flashing on Flashing off

Auto Range
Trigger
Edge Deley Deg

Flash Time

Ave Last Min Max

blinking

Measuring unit “Hz” Measuring unit “FPM”

FLASH

Auto Range

min

sec

hHz

Trigger
Edge Deley Deg

Flash Time

Ave Last Min Max

min

sec

hHz

8

4.3.4 Flash rate and frequency “Internal Mode”

Set the flash rate (frequency) by turning the center dial.

Clockwise: Increase

Counter-clockwise: Decrease
For small adjustments, turn the dial slowly. For large adjustments, rotate the dial quickly.
The flash rate and resolution differs according to measuring range. Refer to section 4.5.1 for details.

Notes for setting the flash rate

One function of a stroboscope is to provide a “Frozen” virtual image of a rotating target once the flash rate
of the stroboscope matches the rotational speed of the target object (FPM=RPM). The stroboscope will
also show a single image when the flash rate or frequency is set to a lesser multiple of the RPM (1/2, 1/3,
etc.) When the flash rate is increased to a high multiple (2, 3, etc.), multiple images will appear. To find the
true RPM of the target object, beginning the flash rate to lower multiples until only a single image appears.
For more information regarding the multiply/divide by 2 function, please see 4.3.5.

“Frozen”

virtual image

1

True rotational speed of

target object

(rpm)

900

Pattern

2 times

1/2 times

Motor

3 times

4 times

1/3 times

Flash rate of
stroboscope

(FPM)

3600 4 times 4
2700 3 times 3
1800 2 times 2

Multiple of true

rotational speed

900 1 times 1

450 1/2 times 1
300 1/3 times 1

Number of

stopped

images

9

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4.3.5 Multiply / Divide by 2 Function

The flash rate or frequency can be doubled or halved by the “x2” and “½” keys on the operation panel.

1) Doubling the flash rate (x2)
Press “x2” key to multiply the current flash rate by a factor 2 until the max flash rate is reached.

Operation Indication

FLASH

×2

Press and release

Auto Range
Trigger
Edge Deley Deg

Flash Time

Ave Last Min Max

min

sec

hHz

×2

Auto Range
Trigger
Ehidge Deley Deg

Flash Time

Ave Last Min Max

min

sec

hHz

Auto Range
Trigger
Edge Deley Deg

Flash Time

×2

Ave Last Min Max

min

sec

hHz

Ex. Flash rate 1,500 FPM

Double the rate 3,000 FPM

After the flash rate (frequency) changes, it becomes the new value based on the set display resolution. (See
section 5. Specifications)
Therefore, the frequency is likely not to return to the original frequency, even if the “1/2” key is pressed after
pressing the “x2” key.

2) Halving the flash rate (½)
Press “½” key to divide the current flash rate by a factor of 2 until the min flash rate is reached.

Operation Indication

FLASH

1/2

Press and release

Auto Range
Trigger
Edge Deley Deg

Flash Time

Ave Last Min Max

min

sec

hHz

Ex. Flash rate 1,500 FPM

Auto Range
Trigger
Edge Deley Deg

Flash Time

Ave Last Min Max

1/2

New flash rate 750 FPM

min

sec

hHz

Double the rate 6,000 FPM

Auto Range
Trigger
Edge Deley Deg

Flash Time

1/2

Ave Last Min Max

New flash rate 375 FPM

min

sec

hHz

After the flash rate (frequency) changes, it becomes the value based on the set display resolution. (See
section 5. Specifications)
Therefore, the frequency is not to return to the original frequency even if “x2”key is pressed after pressing “½”
key.

10

Press and release

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360° 360°

OFF

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4.3.6 Phase Shift (Angle)

Once "Frozen" virtual image is achieved via FPM=RPM, the phase shift function can advance or delay the
flash so that the image appears to be rotating incrementally.
Press “PHASE+” key or “PHASE-“ key to increment or decrement the phase shift angle by 3°.
The display will show the cumulative angle of the phase shift.

Operation Indication

FLASH

PHASE+

Auto Range
Trigger
Edge Deley Deg

Flash Time

Ave Last Min Max

min

sec

hHz

PHASE+

Auto Range
Trigger
Edge Deley Deg

Flash Time

Ave Last Min Max

min

sec

hHz

PHASE+

Auto Range
Trigger
Edge Deley Deg

Flash Time

Ave Last Min Max

min

sec

hHz

Ex. Flash rate 6,000 FPM

Operation Indication

FLASH

PHASE-

Press and release

Auto Range
Trigger
Edge Deley Deg

Flash Time

Ave Last Min Max

Ex. Flash rate 6,000 FPM

Phase shift at 0°

4.3.7 Flash Pulse Duration (FOCUS) setting

The FOCUS can be set within the range of 0.1°/360° - 1.0°/360°, with a resolution of 0.1°.
Period of flashing = 360°.

Flash

ON

The Flash Pulse Duration (RATIO) is directly proportional to the LED brightness, which in turn, is inversely related
to the target image focus.

If "PHASE +" key is pressed at 359°, it becomes 0°.

min

sec

hHz

PHASE-

If "PHASE -" key is pressed at -359°, it becomes 0°.

Flashing Duration (

Increment phase shift by 3°

Auto Range
Trigger
Edge Deley Deg

Flash Time

Ave Last Min Max

min

sec

hHz

Decrement phase shift by 3°

0.1°- 1.0°

)

Increment phase shift by 3°

Final phase shift of 6°

Auto Range
Trigger
Edge Deley Deg

Flash Time

PHASE-

Ave Last Min Max

Decrement phase shift by 3°

Final phase shift of -6°

min

sec

hHz

11

When blinking, flash duration can be modified (see

(blinking)

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Press the “RATIO” key. The current mode will start blinking for 5 seconds allowing modification at this point.

Operation Indication

FOCUS

FOCUS

FOCUSFOCUS

Internal flashing mode

External trigger mode

Press and release

Auto Range
Trigger
Edge Deley Deg

Flash Time

Ave Last Min Max

min

sec

hHz

Phase shift
angle

FOCUS

FOCUS

FOCUSFOCUS

Auto Range
Trigger
Edge Deley Deg

Flash Time

Ave Last Min Max

min

sec

hHz

Flash pulse
duration
(blinking)

next section for directions on this step)

Auto Range
Trigger

Edge Deley Deg
Flash Time

Ave Last Min Max

min

sec

hHz

Flash delay
angle

FOCUS

FOCUS

FOCUSFOCUS

Auto Range
Trigger

Edge Deley Deg

Flash Time

Ave Last Min Max

min

sec

hHz

Flash pulse
duration

When blinking, flash duration can be modified (see

next section for directions on this step)

**

Auto Range
Trigger
Edge Deley Deg

Flash Time

Ave Last Min Max

FOCUS

FOCUS

FOCUSFOCUS

min

sec

hHz

**

Auto Range
Trigger

Edge Deley Deg
Flash Time

Ave Last Min Max

Phase shift
angle

Return to normal internal flashing

mode and display

Return to normal external

triggering mode and display

** While in the flash pulse duration setting mode, if no manual changes are made to the DT-329 settings for
5 seconds the LCD display will return to a normal indication of each mode.

Press “PHASE+” key, or turn the dial clockwise to increment the Focus by 0.1°.
Press “PHASE-” key, or turn the dial counter clockwise direction to decrement the Focus by 0.1°.

FOCUS

FOCUS

FOCUSFOCUS

min

sec

hHz

Flash delay
angle

12

○○○○

○○○○

○○○○

Press and release

Press and release

○○○○

○○○○

○○○○

Turn clockwise

Turn counter

clockwise

Operation Indication

FLASH

PHASE

PHASE＋＋＋＋

PHASEPHASE

OR

Auto Range
Trigger
Edge Deley Deg

Flash Time

Ave Last Min Max

min

sec
hHz

PHASE+

または

Auto Range
Trigger
Edge Deley Deg

Flash Time

Ave Last Min Max

min

sec
hHz

・・・・

Auto Range
Trigger
Edge Deley Deg

Flash Time

Ave Last Min Max

min

sec
hHz

FLASH

PHASE

PHASE－－－－

PHASEPHASE

OR

Flash duration (FOCUS)

0.1°/ 360°

Auto Range
Trigger
Edge Deley Deg

Flash Time

Ave Last Min Max

Current (FOCUS)

1.0°/ 360 °

min

sec
hHz

PHASE－

または

Incremented

0.2°/ 360 °

Auto Range
Trigger
Edge Deley Deg

Flash Time

Ave Last Min Max

Decremented

0.9°/ 360°

min

sec
hHz

・・・・

Maximum

1.0°/ 360 °

Auto Range
Trigger
Edge Deley Deg

Flash Time

Ave Last Min Max

Minimum

0.1°/ 360°

min

sec
hHz

13

External Trigger

○○○○

○○○○

ms

○○○○

ms

4.4 External Trigger Mode

This mode allows synchronization of the FPM with external signal input such as a sensor.
See section 4.6 for details.
Parameter settings are possible, like phase shift, delay time, flash duration, edge trigger.

4.4.1 External trigger mode: LCD display information

Mode Indicator

Trigger edge Indicator

Auto Range
Trigger

Edge Deley Deg
Flash Time Max

The frequency of the external signal is measured each period, while the latest external frequency
measurement is updated every 50ms.
For an out of range external input signal, the display will appear as follows:

External signal < 60FPM/1Hz.

4.4.2 Flash Delay Setting

This mode allows for delayed flashing once an external signal is triggered.
The unit of delay is time (msec) or degree (°).
Press “PHASE+” or ”PHASE-” key to toggle between two settings of “delay time” or “delay angle”.

Operation button Indication

FLASH

PHASE+

FLASH

PHASE-

Press and release

Auto Range
Trigger

Edge Deley Deg
Flash Time

Ave Last Min Max

min

sec

hHz

Frequency of external trigger input

Flash indicator

Flash rate unit of measure: “min” or “Hz”

Min

Sec

hHz

External signal > 10,000FPM/166Hz.

PHASE+

displayed (“min” = FPM flashes per minute)

Flash delay time/angle display

Auto Range
Trigger

Edge Deley Deg
Flash Time

Ave Last Min Max

min

sec

hHz

PHASE-

“delay angle” in deg “delay time” in ms

14

4.4.2.1 “Delay time” setting

This can be set to 0~999 msec with a resolution of 1 ms.
The internal calculation time of the unit is 60us, which results in the actual delay time being (Setting delay
time) + 60us.
The DT-329 will begin flashing after the 1st trigger pulse. See timing chart below.
[Example]

Trigger: Positive edge (The instant where the delay time)

Delay time: 10ms (Independent of external input frequency)

External Pulse
Input

LED Flash

If external signal period < delay time, then the delay time value = 0.
Please note the built in 60us internal delay on top of the external signal input.

100ms

Measure

frequency

10ms

Delay

80ms

Measure

frequency

10ms

Delay

15

Turn clockwis

e

○○○○

ms

Turn counter

Go to delay angle setting

Go to delay angle setting

○○○○

ms

○○○○

ms

○○○○

ms

○○○○

ms

○○○○

ms

Press "PHASE+" key to select the delay time setting. Turn dial CW to increase and CCW to decrease.

Button operation Expression

Auto Range
Trigger

Edge Deley Deg
Flash Time

Ave Last Min Max

min

sec
hHz

Auto Range
Trigger

Edge Deley Deg
Flash Time

Ave Last Min Max

PHASE-

min

sec
hHz

・・・・

Auto Range
Trigger

Edge Deley Deg
Flash Time

Ave Last Min Max

min

sec
hHz

clockwise

Auto Range
Trigger

Edge Deley Deg
Flash Time

Ave Last Min Max

min

sec
hHz

Auto Range
Trigger

Edge Deley Deg
Flash Time

Ave Last Min Max

PHASE-

min

sec
hHz

・・・・

Auto Range
Trigger

Edge Deley Deg
Flash Time

Ave Last Min Max

min

sec
hHz

16

Turn clockwise

frequency

○○○○

ms

○○○○

ms

○○○○

ms

4.4.2.2 “Delay angle” setting

Set the delay angle from 0° to 360° in 1° increment s.
The actual delay time is as follows:

Delay angle setting

While the DT-329 does not flash at the 1st trigger pulse as shown below in the timing chart.

[Example]

Trigger : Positive edge
Delay angle : 36°

External Pulse
Input

LED Flash

If the frequency of the external trigger input changes, the timing of the flash inaccurate, because the timing is
calculated based on the previous measured period.
If the current period of external trigger input is less than the previous period and the next trigger input occurs
before the flash time, the delay angle setting is ignored and the unit flashes at delay angle = 0°.

Delay angle increases as the dial is rotated to the right. The angle settings will go to 0° when angle increases past

359°.

Operation Expression

360°

Auto Range
Trigger

Edge Delay Deg
Flash Time

Ave Last Min Max

× Period of External Input + approx. 60us (Built-in)

100ms (360°)

Measure

min

sec

hHz

80ms (360°)

10ms (36°)

Delay

frequency

Auto Range
Trigger

Edge Delay Deg
Flash Time

Ave Last Min Max

8ms (36°)

Delay Measure

min

sec

hHz

Auto Range
Trigger

Edge Delay Deg
Flash Time

Ave Last Min Max

min

sec

hHz

17

PHASE+

Go to delay time setting

Turn counter

○○○○

○○○○

○○○○

○○○○

ms

○○○○

ms

○○○○

ms

Delay Angle setting will decrease from 359° (Max) to 0° (Min) value for counter clockwise. The settings will
eventually go to 0°as when angle decreases from 359°.

Auto Range
Trigger

Edge Delay Deg
Flash Time

Ave Last Min Max

min

sec

hHz

Auto Range
Trigger

Edge Delay Deg
Flash Time

Ave Last Min Max

min

sec

hHz

・・・・

Auto Range
Trigger

Edge Delay Deg
Flash Time

Ave Last Min Max

min

sec

hHz

clockwise

PHASE+

4.4.3 Units of Measure- Changing from FPM to Hz

Press and release the “SET” key to toggle between “FPM” to “Hz”.

Operation Expression

SET

Press and release

Auto Range
Trigger

Edge Deley Deg
Flash Time

Ave Last Min Max

min

sec

hHz

SET

Auto Range
Trigger

Edge Deley Deg
Flash Time

Ave Last Min Max

Measuring unit “FPM” Measuring unit “Hz”

NOTE: Fraction values are rounded down.

Go to delay time setting

SET

min
sec

hHz

Auto Range
Trigger

Edge Deley Deg
Flash Time

Ave Last Min Max

min

sec

hHz

Measuring unit “FPM”

18

Press to cycle

○○○○

○○○○

○○○○

ms

○○○○

ms

Press to change

Rotate the dial to

then go to

In

ternal

flashing

mode

4.5 Parameter Setting Instruction

Press “MODE” until the LCD displays “P” (Parameter setting mode). Please refer to 4.2. Mode selection.
Press the “SET” key to cycle between the various parameter settings available (range, trigger edge and delay
time/delay angle). For more information regarding the various parameter settings, please refer to sections 4.5.2
through 4.5.4 below. Press the “MODE” key to store the settings and return to measuring modes.
Note: “MODE” key must be pressed to store settings.

Operation Expression

FLASH

SET

SET

SETSET

between

parameters

FLASH

PHASE

PHASE++++

PHASEPHASE

PHAS

PHASEEEE----

PHASPHAS

Auto Range
Trigger
Edge Deley Deg
Flash Time

Ave Last Min Max

min

sec
hHz

SET

Auto Range

Trigger
Edge Deley Deg

Flash Time

Ave Last Min Max

min

sec
hHz

the selected

parameter setting

OR

change

the selected

parameter setting

Measuring range setting

(Press “PHASE+”, “PHASE-“ key

or turn the dial to switch

the measuring range)

SET

Auto Range
Trigger
Edge Deley Deg
Flash Time

Ave Last Min Max

min

sec
hHz

Delay angle setting

(use dial to change settings)

Set and store parameter settings,

MODE

PHASE+

PHASE-

Trigger edge setting

(Press “PHASE+”, “PHASE-“ key

or turn the dial to change

the trigger edge setting)

SET

Auto Range
Trigger
Edge Deley Deg
Flash Time

Ave Last Min Max

min

sec
hHz

Delay time setting

(use dial to change settings)

19

Turn cou

nter

Press and release

○○○○

ms

○○○○

ms

○○○○

ms

○○○○

ms

4.5.1 Measurement range setting

The DT-329 has a selectable measuring range, which can be set in the Parameter mode setting. The
range and resolution of this setting will be different for each measuring range, as indicated in the table
below.

Test unit Measuring range as Indicated in Parameter Settings

FPM

12,000

(range 60.0 - 12,000.0)

120,000

(range 60 - 120,000)

Hz

200

(range 1.000 - 200.00)

(range 1.00 - 2000.0)

*Note that if the flash range is changed to a lower range, the current flash rate, if larger than 12,000 FPM or
200 Hz, will decrease to the maximum allowable value of the range.

Ex: If flash rate is set to 60,000 FPM in the range of 60 – 120,000 FPM, it will automatically switch to
12,000 FPM when the flash measuring range parameter is changed to 60.0 – 12,000.0 FPM. The max
value is limited if the Flashing time (frequency) setting is greater than the range in the test range switch.

To adjust the measuring range parameter, press “PHASE +” or turn the dial clockwise to set the range as
“120,000 FPM” or “2000 Hz”
Press “PHASE -” or turn the dial counter clockwise to set the range as “12,000 FPM” or “200 Hz”.

Operation Expression

PHASE+

Press and release

Auto Range
Trigger
Edge Deley Deg
Flash Time

Ave Last Min Max

min

sec

hHz

FLASH

PHASE+

Or

Auto Range
Trigger
Edge Deley Deg
Flash Time

Ave Last Min Max

2,000

min

sec

hHz

Turn clockwise

PHASE-

clockwise

Measuring range set to

“60.0 - 12,000.0 FPM”

Auto Range
Trigger
Edge Deley Deg
Flash Time

Ave Last Min Max

Measuring range set to

“60 - 120,000 FPM”

min

sec

hHz

FLASH

PHASE-

Or

Measuring range set to

“60 - 120,000 FPM”

Auto Range
Trigger
Edge Deley Deg
Flash Time

Ave Last Min Max

min

sec

hHz

Measuring range set to

“60.0 - 12,000.0 FPM”

20

Press and release

Turn clockwise

Turn counter

Press and release

○○○○

ms

○○○○

ms

○○○○

ms

○○○○

ms

Operation Expression

FLASH

PHASE+

Auto Range
Trigger
Edge Deley Deg
Flash Time

Ave Last Min Max

min
sec

hHz

FLASH

PHASE+

Or

Auto Range
Trigger
Edge Deley Deg
Flash Time

Ave Last Min Max

min
sec

hHz

4.5.2

FLASH

PHASE-

clockwise

Trigger

Edge setting (External Mode)

Select Positive or Negative edge.
Examples:

-When trigger edge setting is set to “Positive Edge”, the flash will occur on the positive edge of the input
pulse (when delay setting is zero).

External Pulse signal
from machine/sensor

Stroboscope flash

-When the trigger edge setting is set to “Negative Edge”, the flash will occur on the negative edge of the
input pulse (when delay setting is zero).

External Pulse signal
from machine/sensor

Stroboscope flashing

Measuring range set to

“1 – 200 Hz”

Measuring range set to

“1 – 2000 Hz”

Auto Range
Trigger
Edge Deley Deg
Flash Time

Ave Last Min Max

min
sec

hHz

FLASH

PHASE-

Or

Measuring range set to

“1 – 2000 Hz”

* * *

Auto Range
Trigger
Edge Deley Deg
Flash Time

Ave Last Min Max

Measuring range set to

“1 – 200 Hz”

*Delay time (based on the delay settings of parameter)

* * *

:*Delay time (based on the delay settings of parameter)

min
sec

hHz

21

Press and release

Turn clockwise

Or

Or

Trigger edge set as

Turn counter

clockwise

Press and release

○○○○

ms

○○○○

ms

○○○○

ms

○○○○

ms

Press the “SET” key to cycle to the Trigger Edge setting parameter mode.
To set the trigger edge as “Down edge”, press “PHASE -“key or turn the dial clockwise.
To set the trigger edge as “Up edge”, press “PHASE +” key or turn the dial counter clockwise.

Operation Expression

FLASH

PHASE-

PHASE+

Auto Range

Trigger
Edge Deley Deg

Flash Time

Ave Last Min Max

Trigger edge set as

“Positive edge”

Auto Range

Trigger
Edge Deley Deg

Flash Time

Ave Last Min Max

“Negative edge”

min

sec

hHz

min

sec

hHz

FLASH

PHASE-

FLASH

PHASE+

Auto Range

Trigger
Edge Deley Deg

Flash Time

Ave Last Min Max

Trigger edge set as

“Negative edge”

Auto Range

Trigger
Edge Deley Deg

Flash Time

Ave Last Min Max

Trigger edge set as

“Positive edge”

min

sec

hHz

min

sec

hHz

22

Turn counter

○○○○

ms

○○○○

ms

○○○○

ms

○○○○

ms

○○○○

ms

○○○○

ms

4.5.3 Delay setting

Delay time and angle setting will allow the flash to be delayed after an external pulse is sensed by the unit.
The Parameter setting mode:
Press “PHASE +” and “PHASE -“ key, to select between delay time and delay angle.

4.5.3.1

Delay time setting

Selecting Delay time from an external pulse input to LED flashing can be set in the range of 0 – 999 msec,
with a resolution of 1msec.
For details, please refer to “4.4.2 Flash delay setting”.

Rotate the dial clockwise to increase delay time setting or counter clockwise to decrease the delay time.

Operation Expression

Turn clockwise

Auto Range
Trigger
Edge Delay Deg
Flash Time

Ave Last Min Max

min

sec

hHz

Auto Range
Trigger
Edge Delay Deg
Flash Time

Ave Last Min Max

min

sec

hHz

Auto Range
Trigger
Edge Delay Deg
Flash Time

Ave Last Min Max

min

sec

hHz

clockwise

Auto Range
Trigger
Edge Delay Deg
Flash Time

Ave Last Min Max

min

sec

hHz

FLASH

PHASE-

Auto Range
Trigger
Edge Delay Deg
Flash Time

Ave Last Min Max

FLASH

PHASE-

Go to delay angle setting

min

sec

hHz

Go to delay angle setting

Auto Range
Trigger
Edge Delay Deg
Flash Time

Ave Last Min Max

min

sec

hHz

23

Turn counter

○○○○

ms

○○○○

ms

○○○○

ms

○○○○

ms

○○○○

ms

○○○○

ms

4.5.3.2 Delay angle setting

The delay angle can be set from 0° to 360° by 1° in crements.
Delay angle setting increases as the dial turns right, and decreases as it turns left.
Delay angle events to zero when set below 0° (min) or 360° (max).

Operation Expression

Turn clockwise

Auto Range
Trigger
Edge Delay Deg
Flash Time

Ave Last Min Max

min

sec

hHz

Auto Range
Trigger
Edge Delay Deg
Flash Time

Ave Last Min Max

FLASH

PHASE+

min

sec

hHz

Go to delay time setting

Auto Range
Trigger
Edge Delay Deg
Flash Time

Ave Last Min Max

min

sec

hHz

clockwise

Auto Range
Trigger
Edge Delay Deg
Flash Time

Ave Last Min Max

min

sec

hHz

Auto Range
Trigger
Edge Delay Deg
Flash Time

Ave Last Min Max

FLASH

PHASE+

Go to delay time setting

min

sec

hHz

Auto Range
Trigger
Edge Delay Deg
Flash Time

Ave Last Min Max

min

sec

hHz

24

4.6 Connector of External input/output

4.6.1 Connector Pin Assign
External Input

Pin No. Signal Name Contents

1 +12V +12V power supply output
2 G12 Ground of power supply output
3 TRG_IN External pulse input
4 IN_COM Common of External pulse input
5 NC
6 NC
7 FG Frame ground

DT-329 side: SRCN2A16-7S [JAE]
Accessory: SRCN6A16-7P [JAE]

External Output

Pin No. Signal Name Contents

1 OUT External pulse output
2 OUT_COM Common of External pulse output

3 FG Frame ground

DT-329 side: SRCN2A13-3S [JAE]
Accessory: SRCN6A13-3P [JAE]

4.6.2 External Pulse Input

The unit can be operated and controlled by an external signal, from either a sensor or a machine signal like
an output from a printing press, re-winder or others. This will allow the stroboscope to flash in sync with the
target object’s rotational speed.
The input signal will have the following characteristics.

Input frequency: 60 - 10,000 FPM (1 – 160 Hz)
Input pulse width: over 50us
Delay angle: 0 - 359° (every 1° )
Delay time: 0 - 999ms (every 1ms)

Please connect with open collector output (below 1V (ON voltage)) or no-voltage contact output (approx.

11mA current)

[Input circuit]

Connector of

External

input

3pin
4pin

1kΩ

+12V

Photocoupler

Inside DT-329

25

Photocoupler

External

4.6.3 External pulse output

The unit will also output a signal that is related to the flash rate of the unit. This signal can be used to control
additional stroboscopes so that each flashes at the same rate or to send a pulse to data collectors.
External circuit: Open collector output, Voltage below DC30V, Current below 30mA
Output pulse width: Approx. 200us

[Output circuit]

1pin

(The same with TLP127
Toshiba made)

[Output time]

Flashing

2pin

(36V)

Inside DT-329

pulse output

Approx. 200us

26

1-200 Hz

FPM

100,010

- 120,000

10FPM

5 Specifications

Model Number DT-329
Units of measure FPM (flashes per minute) or Hz (frequency)
Measuring range 1 - 2,000Hz

60 - 120,000 FPM
Accuracy +/-0.02% (at 73°F [23°C])
Resolution

of flash rate

Unit;
Hz

Measuring
range:

0.01Hz

setting in
internal
mode

Measuring
range:

0.1Hz

1-2000 Hz

Unit;
FPM

Measuring
range:
60 - 12,000 FPM
Measuring
range:
60 - 120,000

60.0 - 3,000.0

3,000.2 - 6,000.0

6,000.5 - 12,000.0

60 - 30,000

30,002 - 60,000

60,005 - 100,000

0.1FPM

0.2FPM

0.5FPM
1FPM
2FPM
5FPM

Flashing time (Duty)
Mode Internal Set and change

flashing rate
Phase Shift Forward/backward by 3° increments

Unit change “FPM” or ”Hz”

External
trigger

Flash rate
(Input frequency)

Input pulse width More than 50 us
Unit change “FPM” or ”Hz

Parameter

Measuring range 1 - 2000Hz (60 - 120,000 FPM) range or

setting

Trigger Edge Positive or Negative edge
Delay time/angle Delayed time : 0 - 999ms *1

Input/ Output (I/F) External Trigger Input

External Trigger output Photo Coupler (Open collector) Output

Sensor Power Supply DC12V/max.40mA

*1

Built-in delay time = 60us

0.1° - 1.0°/360° setting can be changed by 0.1° inc rements

Change flash rate by using dial, or “×2” and “1/2” key

1 – 166 Hz

60 – 10,000 FPM

1 - 200Hz (60 - 12,000 FPM)

Delayed angle : 0 - 359° *1

Photo Coupler Input, Current 12mA (approx.)

Voltage: DC30V or less, Current: 30mA or less.

Pulse width: approx.200us

27

Display LCD 6 digits (main), 5 digits (sub)

“Setting item”, “Unit”

Back light

Flashing part

Flash Source
Life time

Luminance

value)

Flash area
Power supply

(typical

20cm | 6,000FPM About 1250 lx
50cm | 6,000FPM About 700 lx
20cm | 120,000FPM About 1950 lx

Temperature Range 32 - 95

（Flashing

Yellow green LED
Super High Brightness White LED

5500K (typ)

More than 1500 hours (approx. 5X108 times at 6000 FPM)

About 23.62in x 15.75in (600mm x 400mm)
AC100 – 240V (50Hz/60Hz)

°F [

0 - 35°C]
Operating humidity limits 35 – 38 % RH
Use Environment No dust, No corrosive gas
Resistance of Environment No water-proof/explosion protection and non-RoHS
Standards CE
Weight

About 11lbs(5kg)

Housing Material Steel
Accessories

AC cable
Connector for External input
Connector for External output

28

6 Dimensions

30mm

1.18”

7.28”

185mm

370mm 14.57”

1.57”

40mm

340mm

13.39”

6.02”

153mm

3.94”

100mm

29