Before use, please carefully read these safety precautions as well as instructions,
and follow them for proper use.
Page 2
Safety Requirements
Be sure to observe
Before operation, maintenance and inspection, please carefully read this instruction manual and
follow it for proper use. Please carefully read all information related to this unit's safety precautions
before use.
This instruction manual provides two grades of safety warnings: Danger and Caution.
Each of them is an important description related to safety. Be sure to follow them.
DANGER
CAUTION
This indicates the possibility of fire, severe injury and even death if a user disregards the instruction
and operates the unit improperly.
This indicates a potential situation that could produce a minor injury or damage to material if it is
improperly handled.
However, depending on the circumstances, there could be a possibility that it may cause more
serious results. Be sure to follow them.
Protection categories are explained and separated by the following symbols
Not allowed -prohibited
Mandatory Must follow
DANGER
Do not use this product in an atmosphere
with risk of fire and/or explosion.
Failure to follow this could result in fire.
Do not look directly at the light emitting
section.
Failure to follow this could result in injury to the eyes.
CAUTION
Do not use and/or store the unit in the
Do not apply strong impact to the unit, or
drop it.
Failure to follow this could result in abnormal
operation.
Never disassemble, repair, and remodel
the unit.
Failure to follow this could result in injury due to
abnormal operation.
Wipe clean the unit with a soft dry cloth if it gets dirty.
Or immerse a cloth in water diluted neutral detergent,
wring it, and wipe clean the unit with it.
Do not use any volatile chemicals, such as benzene,
thinner, or alcohol.
Since continuously emitting light for long time
causes the unit's housing to be very hot, fix
the LED strobe using a tripod, etc. and use the
unit (avoid direct skin contact with the unit,
such as holding it by hand).
Failure to follow this could result in mild burns.
following places.
•Where water may come in contact
•Where direct sunlight come in contact
•Where high humidity environment may be present
•Where dust, dirt, salt, and/or iron may be present
•Where oil, water, and/or chemicals come in contact
•Where a fire or explosion may exist or occur.
Use the unit within the proper operating
temperature range (32 - 95F).
Failure to follow this could result in malfunction.
Use the unit within the proper operating
humidity range (35 - 85%RH). (No
condensation)
Failure to follow this could result in malfunction.
2
Page 3
- Contents -
1 Overview 4
2 Before use
2.1 Checking accessories 4
2.2 Peel off the protection sheet 5
2.3 Charging (only for DT-365)
2.3.1 Charging method
2.3.2 Indication of low battery voltage
2.3.3 Battery replacement
3 Part names and functions
3.1 Main unit
3.2 Operation section
3.3 Display
3.3.1 Part names
3.3.2 Number display
3.3.3 Unit display
3.3.4 Emission setting display
3.3.5 Mode display
3.3.6 Memory number display
3.3.7 Charging lamp (only for DT-365)
4 Functions and operations
4.1 Power ON/OFF
4.2 Emission setting
4.3 Internal oscillation emission
4.3.1 Display of internal oscillation emission
4.3.2 Switching the modes
4.3.3 Switching the unit display
4.3.4 Emission count mode
4.3.4.1 Emission count setting
4.3.4.2 Changing the emission count (frequency) to double or half
4.3.5 Emission duration mod
4.3.6 Phase mode
4.4 External synchronous emission
4.4.1 Emission count mode
4.4.2 Emission duration mode
4.4.3 Phase mode
4.4.3.1 How to set the delay
4.5 Memory function
4.5.1 Saving each setting value
4.5.1.1 Saving on internal oscillation emission
4.5.1.2 Saving on external synchronous emission
4.5.1.3 Saving the setting value when the power is OFF
4.5.2 Reading out each setting value
4.5.2.1 Reading out on internal oscillation emission
4.5.2.2 Reading out on external synchronous emission
4.6 Function mode
4.6.1 Moving to the function mode
4.6.2 Measurement range setting (Function mode 1)
4.6.3 Trigger edge setting (Function mode 2)
4.6.4 Auto emission stop time setting (Function mode 3)
4.6.5 Input signal setting (Function mode 4)
4.7 External I/O connector
4.7.1 Specifications for external I/O connector and pin assignment
A stroboscope tachometer is a measurement instrument to measure the speed (cycle) of rotating
objects that rotate at a constant speed, or moving objects that repeatedly operate at a constant
cycle. When the rotation (motion) cycle matches the flash cycle while the strobe flash is periodically
applied on a rotating or moving object, the rotating (moving) object image appears to stand still. This
stroboscope tachometer is non-contact and can be used to read the flash frequency when such a still
image appears. Also, a stroboscope can be used to make images of rotating or moving objects stand
still or slightly move in order to observe their appearances.
Main features
Wide-range measurement of 60 to120,000 fpm
Simply pressing the x2 or ÷2 key can change the emission count (frequency) to double or half
respectively
The emission time (duty) can be changed by 0.1º within the range between 0.1º/ to 3.6º/ 360º
The emission timing (phase) can be adjusted
The external I/O function is implemented which enables emission in synchronization with the external
pulse, and enables the pulse signal in synchronization with the strobe emission to be output.
Refer to 4.3.4.1 Emission count setting for details
Refer to 4.3.4.2 Changing the emission count (frequency) to double or
half for details
Refer to 4.3.5 flash duration mode
Refer to 4.3.6 Phase mode for details
Refer to 4.4 External synchronous emission for details
Before use2
Checking accessories2.1
Check that the three items in the table below are supplied.
DT-361DT-365
DT-361 x 1DT-365 x 1
Main unit
External signal I/O connector (8 pin) x 1
RM15WTP-8S(7)
Connector
Instruction manual
This document x 1This document x 1
Dedicated AC adapter x 1
4
Page 5
Peel off the protection sheet2.2
Peel off the protection sheet on the operation section.
Operation section
Peel off the (transparent)
protection sheet
Charging (only for DT-365)2.3
Be sure to charge the battery before initial use. Before charging, be sure to check that the power is
turned OFF.
Charging method2.3.1
Turn the power OFF and connect the supplied AC adapter's connector to the main unit. Next insert
the AC adapter's AC plug into an outlet. The battery lamp lights up and charging starts.
Charging is complete in approximately 2.5 hours. Then the battery charging lamp turns off.
* Be sure to use only the supplied AC adapter.
When the power is turned ON with the supplied AC adapter connected, charging ends and
operation starts.
* Note that operation and charging cannot be performed simultaneously.
Connect the supplied AC adapter
Note 1) Since the battery current is automatically shut off when charging is complete, there is no need
to worry about overcharging.
Note 2) When the power is turned ON during charging, charging is canceled and emission starts. When
the unit uses the AC adapter as its power source, it is not charged.
Note 3) To extend battery life and charging capacity, it is recommended to deplete the battery fully
before charging. ( LLLLLL is indicated on the number display)
Note 4) If the unit is charged immediately after long periods of usage at a high ambient temperature,
the temperature rise protection circuit will turn on and the charging lamp may not light up. In
that case, disconnect the AC adapter and let the unit cool. When the product temperature is
decreased, connect the AC adapter again to start charging.
Note 5) Never charge the unit under the following conditions.
Using another AC adapter than supplied.
Adapter of
another device
Charging near flammable materials
Oil
5
Page 6
Indication of low battery voltage2.3.2
If the remaining batter y power drops to near zero, the number display alternates between the
process setting and LLLLLL. However, operation can be performed even when the battery is in this
low condition.
If the remaining battery decreases further, the number display indicates only LLLLLL, which then
stops operation. Press the power switch and shut off the power immediately.
In either case, charge the unit according to the procedure in 2.3.1 Charging method .
•Indication of low battery
•Indication of stopped operation
voltage
Indicates alternately
Battery replacement2.3.3
If the fully charged battery continually decreases, please replace it with the specified replacement
battery. Please contact your local dealer for details.
1. Remove 4 screws located on the bottom of DT-365 and take out the battery assembly.
2. Remove the screws on the connector and the battery supporter and replace with the new
battery.
3. Fix the new battery with the screws and connect the connector.
4. Install the new battery assembly to DT-365.
Connector
Battery
Fix with the hole facing the front.
6
Page 7
Part names and functions3
Main unit3.1
Super luminosity LED (18 lights)
Operation section3.2
⑥
Operation
section
External I/O connector
* The image is for DT-365.
⑤
Power switch
⑦
⑧
* The image is for DT-365.
No.NameFunction description
Power switchTurns the power ON/OFF.
①
DialUsed to change the emission frequency or emission duration.
②
Each press of this key switches the number display in the following order: Emission
MODE key
③
LOAD (SAVE) key
④
SIG keySwitches the internal oscillation emission and external synchronous emission.
⑤
UNIT key
⑥
x2 key
⑦
÷2 key
⑧
frequency (FPM), Emission duration, Emission delay duration (PHA), Emission
frequency (FPM)...
Reads the saved setting value.
Also, saves the current setting value by pressing and holding it.
Switches to indicate the emission time when the emission duration is indicated. When
the delay duration is indicated, each press of this key switches indication of the delay
time and angle.
Each press of this key during on internal oscillation emission alters allows the
performance of emission by double the current set emission count (frequency).
Each press of this key during on internal operation mode drops the current emission by
half the count (frequency).
④
①
③
②
7
Page 8
Display3.3
Part names3.3.1
Charging lamp (only for DT-365)
Numerical display
Unit display
Memory number display
Mode display
Emission setting
display
Number display3.3.2
•Indicates the setting value of the emission count (frequency) in internal oscillation emission mode.
•Indicates the external signal frequency in external synchronous emission mode.
•Each setting value is indicated in the function setting mode.
* For details about the function setting mode, refer to 4.6 Function mode.
Unit display3.3.3
Indicates the unit of the value on the number display.
Indicates the memory number on the number display.
When all the numbers go off the memory number 0 (free mode) is assigned and the previous
setting value is indicated.
Charging lamp (only for DT-365)3.3.7
Lights up while charging and goes off when charging is complete.
8
Page 9
Functions and operations4
Power ON/OFF4.1
Press the power switch when the power is OFF to turn the power ON.
When the power is turned ON, the model is indicated, followed by internal oscillation emission or
external synchronous emission.
OperationDisplay
When the power is
OFF
Press the power
switch
Internal oscillation emission
when the power was last OFF
The screen of internal oscillation
emission is indicated and emission
starts.
External synchronous emission
when the power was last OFF
* When DT-365 is used, the indication may go off immediately after the power is turned ON. In that case,
charge the unit because the remaining battery level is low. For details about charging, refer to 2.3 Charging.
The screen of external synchronous
emission is indicated and the unit
enters the standby mode for the
external signal.
Press the power switch when the power is ON to turn the power OFF, then the indication goes off.
OperationDisplay
When the power is ON
Press the power
Indicated letters go off.
switch
* When the power is turned ON, the following indication may be displayed.
The following is the error message showing EEPROM read failure. Press the x2 key to return to the normal
emission screen from the error message display.
OperationDisplay
Press the x2 key
Error display
EEPROM read failure
Returns to the normal
setting screen
9
Page 10
Emission setting4.2
Each press of the SIG key switches between internal oscillation emission and external synchronous
emission.
Each press of MODE key switches the setting display value to FPM (emission count mode), DUR
(emission duration mode), and PHA (phase mode).
OperationDisplay
Emission count mode
Emission duration mode
Each press switches
the modes
Phase mode
Switching the unit display4.3.3
While the UNIT key is pressed and held in the emission duration mode (DUR), the unit display is
switched from [º] to [μs].
Each press of the UNIT key in the phase mode (PHA) switches the unit display from [º] to [ms].
Button operationDisplay
•Emission duration mode (DUR)
Indicates time while
the key is being
pressed
Indicates angleIndicates time
•Phase mode (PHA)
Each press switches
the display
Indicates angleIndicates time
11
Page 12
Emission count mode4.3.4
The emission count (frequency) can be set in the emission count mode (FPM).
Emission count setting4.3.4.1
Turn the dial to the CW direction to increase the emission count (frequency), and to the CCW
direction to decrease it. Turn the dial fast to change the setting value greatly and slowly to change
it slightly.
The emission count (frequency) you can set depends on the measurement range. For details about
the measurement range, refer to 4.6.2 Measurement range setti ng.
Press the MODE key to switch to the emission duration mode (DUR).
OperationDisplay
CW
Increase/decrease
the emission count
(frequency)
Press the key to
switch to the emission
duration mode
Decrease
Emission count mode
CCW
Increase
Emission duration mode
12
Page 13
Changing the emission count (frequency) to double or half4.3.4.2
The emission count (frequency) can be changed to double or half of the current setting value using
the key operation on internal oscillation emission.
1) To change the emission count (frequency) to double of the current setting value
Each press of the x2 key changes the emission count (frequency) to double of the current setting
value on internal oscillation emission.
* If the doubled emission count (frequency) goes beyond the value in the measurement range, the key
operation will be disabled.
The emission count (frequency) after change provides the value according to the setting display
resolution (for details about the setting display resolution, refer to 5 Specifications). For this reason,
after pressing the x2 key and doubling the emission count (frequency), the value may not be returned
to the initial value even by pressing the "÷2" key and halving it.
2) To change the emission count (frequency) to half of the current setting value
Each press of the "÷2" key changes the emission count (frequency) to half of the current setting
value on internal oscillation emission.
* If the half of the emission count (frequency) goes below the value in the measurement range, the key
operation will be disabled.
The emission count (frequency) after change provides the value according to the setting display
resolution (for details about the setting display resolution, refer to 5 Specifications). For this reason,
after pressing the ÷2 key and halving the emission count (frequency), the value may not return to the
initial value even by pressing the x2 key and doubling it.
13
Page 14
Emission duration mode4.3.5
The emission time (ratio) can be set by 0.1º within the range between 0.1º/ 360º and 3.6º/ 360º in
the emission duration mode (DUR). The emission time setting value shows the strobe emitting
time by angle while a rotating object rotates one revolution (360º).
While the “UNIT” key is being pressed, the value converted from the emission angle to time can be
checked.
A longer emission time increases the brightness, but a measured object appears to be moving.
Also, a shorter emission time decreases the brightness, but a measured object appears to stand
more still.
Adjust the appropriate emission time according to your application and conditions and use the unit.
Press the MODE key to switch to the phase mode (PHA).
Indicates the value converted
from the emission angle to time
Emission duration modePhase mode
Indicates the value converted
from the emission angle to time
CW
14
Page 15
Phase mode4.3.6
When the rotation (motion) cycle of a measured object matches with the strobe flash cycle, the
measured object appears to stand still. To change the angle (position) to make the object stand
still, use the phase mode.
The phase can be changed by 0.1º using the dial within the range between 1º and 359º in the phase
mode (PHA).
Press the UNIT key to set the phase change by time. The phase can be changed by 1 ms within
the range between 0 ms and 999 ms (max.).
When time is used for setting, a longer time duration than the emission cycle cannot be set.
Press the MODE key to switch to the emission count mode (FPM).
OperationDisplay
CW
Delay angle: DecreasesDelay angle: Increases
Increase/decrease
the delay angle
Each press switches
the delay time
display
Press the key to
switch to the emission
count mode
CCW
CW
Delay time: DecreasesDelay time: Increases
Phase mode
CCW
Emission count mode
15
Page 16
External synchronous emission4.4
External synchronous emission is the function to emit a strobe flash in synchronization with an
external pulse.
• You can set which edge of the external pulse triggers the emission, the rising edge or falling edge.
Refer to 4.6.3 Trigger edge setting.
•Timing (delay) from the external pulse entry to strobe flash emission can be optionally set.
Emission count mode4.4.1
Measurement value of the emission count (frequency)
Indicates the memory
number
Indicates the external
synchronous emission
* The external pulse frequency is measured per cycle and indicated (An averaging procedure is applied
every 200 ms to update the measurement value and indicate the latest one.)
If the external pulse cycle is beyond the specifications range, the following letters are indicated.
Mode display
[Without the delay angle setting]
Measurable range 40 to 35,000
When the external input pulse
frequency goes below 40 fpm
When the external input pulse
frequency goes beyond 35,000 fpm
[With the delay angle setting]
Measurable range 60 to 10,000
When the external input pulse
frequency goes below 60 fpm
When the external input pulse
frequency goes beyond 10,000 fpm
Press the MODE key to switch to the emission duration mode (DUR).
OperationDisplay
Press the key to
switch to the emission
duration mode
Emission count mode
16
Emission duration mode
Page 17
Emission duration mode4.4. 2
The emission time (ratio) can be set by 0.1º within the range between 0.1º/ 360º and 3.6º/ 360º in
the emission duration mode (DUR). (The emission time setting value shows the strobe emitting
time by angle while a rotating object rotates one revolution (360º).)
While the “UNIT” key is being pressed, the value converted from the emission angle to time can be
checked.
A longer emission time increases the brightness, but a measured object appears to be moving.
Also, a shorter emission time decreases the brightness, but a measured object appears to stand
more still.
Adjust the appropriate emission time according to your application and conditions and use the unit.
Press the MODE key to switch to the phase mode (PHA).
* When the external synchronous signal has not been entered, [ _ _ _ _ _ _ ] and the emission time are
indicated alternately.
When the external synchronous signal has been entered, only the emission time is indicated.
OperationDisplay
Increase/decrease the
emission angle
Indicates the time
conversion value
while the key is being
pressed
Press the key to
switch to the phase
mode
CCW
Emission angle: Decreases
Indicates the value converted
from the emission angle to time
Emission duration modePhase mode
Emission angle: Increases
Indicates the value converted
from the emission angle to time
CW
17
Page 18
Phase mode4.4.3
Delay emission can be set within the input signal range between 60 fpm and 10,000 fpm.
In the phase mode (PHA), the delay angle from the external pulse entry to strobe flash emission
can be changed by 0.1º using the dial within the range between 1º and 359º.
Press the UNIT key to set the phase change by time. The phase can be changed by 1 ms within
the range between 0 ms and 999 ms (max.).
When time is used for setting, a time longer than the emission cycle cannot be set.
Press the MODE key to switch to the emission count mode (FPM).
* When the external synchronous signal has not been entered, [ _ _ _ _ _ _ ] and the delay setting values
are indicated alternately.
When the external synchronous signal has been entered, only the delay setting value is indicated.
OperationDisplay
CW
Delay angle: DecreasesDelay angle: Increases
Increase/decrease
the delay angle
CCW
CW
Each press switches
the delay time
display
Press the key to
switch to the phase
mode
Delay time: DecreasesDelay time: Increases
Phase mode
CCW
Emission count mode
18
Page 19
How to set the delay4.4.3.1
The delay angle from the pulse input to emission can be set by 0.1º within the range between 1º
and 359º by setting one cycle of the external pulse to 360º. Measure the external pulse frequency
per cycle, and calculate the delay angle based on the measured frequency to perform the delay
emission. Since a delay of approximately 30 μs always exists for the internal calculation, the actual
delay time is calculated as follows:
Delay setting angle
360°
× External pulse cycle + Approximately 30 μs
[Example 1] When setting the input frequency to 10 Hz (600 fpm), trigger edge to rising, and
delay angle to 36º
100ms(360º)
100ms(360º)
External pulse
(Pulse entered from an
external device to DT-361/365)
Strobe emission
Frequency
calculation
Delay
emission
10ms(36º)
Frequency
calculation
10ms(36º)
Delay
emission
* When the delay unit is set to ms in the above example, the delay time can be set within the time range
of less than one cycle input pulse (0 ms to 99 ms).
• Since the delay angle is calculated based on the previously entered pulse cycle, if the external
pulse frequency changes, emission cannot be performed at a precise angle. Also, since the
external pulse cycle becomes shorter than the previous pulse cycle, if the next pulse is entered
before delay angle emission, the delay angle setting will be disabled, and emission is performed
simultaneously* with the external pulse.
•When the delay angle is set to 0º, emission is performed simultaneously with the external pulse.
* Since there is a delay caused by the internal calculation process, the strobe actually emits light in
approximately 30 μs after the external pulse is entered.
Turn the dial to the right to increase the delay angle setting value. Increasing the setting value from
359º will be 0º.
19
Page 20
Memory function4.5
Each setting value can be saved and read out.
Saving each setting value4.5.1
This function is used to save each setting value.
There are two types of saving methods, one is to save a parameter by pressing and holding the
“LOAD(SAVE)” key, and the other is to save a setting value by turning the power OFF.
The number of data entries that can be set is five on internal oscillation emission and external
synchronous emission respectively when saving by the “LOAD(SAVE)” key, and one when saving
by power OFF.
Setting values that can be saved
Saving method
Emission status when the value is saved
Memory number that can be saved1 to 51 to 5--
Emission mode (INT/EXT)××○○
Setting mode (FPM/DUR/PHASE)○○○○
Internal
oscillation
emission
(INT)
External
synchronous
emission
(EXT)
Emission frequency (FPM)
Emission duration (DUR)
Delay angle (PHASE)○×○○
Delay time (PHASE)○×○○
Emission duration (DUR)
Delay angle (PHASE)×○○○
Delay time (PHASE)×○○○
Save a parameter using the
“LOAD(SAVE)” key
Internal
oscillation
emission
○×○○
○×○○
×○○○
External
synchronous
emission
Save when the power is turned OFF
Internal
oscillation
emission
External
synchronous
emission
20
Page 21
Saving on internal oscillation emission4.5.1.1
Press and hold the “LOAD(SAVE)” key in the Internal oscillation emission mode to save the setting
value.
Press and hold the LOAD(SAVE) key to enter the save standby status. SAVE and the memory
number in which the setting value is saved are indicated alternately. In this status, a memory
number in which the setting value is saved can be changed using the dial operation.
Operate the dial to end alternate lighting. Only a memory number in which the setting value is
saved is indicated.
To save, press the “LOAD(SAVE)” key. The setting value is saved in the specified memory number
and the display returns to the emission screen.
To cancel saving, press the x2 key. The save standby status ends and the display returns to the
emission screen.
OperationDisplay
Press and hold
Indicates
alternately
Press and hold
Go to the screen to
save the setting value
Select the memory
number
Cancel
Confirm saving
Cancel saving
CCW
Save standby status
Operate the dial to specify the save destination
Save the setting value
CW
21
Page 22
Saving on external synchronous emission4.5.1.2
Press and hold the “LOAD(SAVE)” key in the external synchronous emission mode to save the
setting value.
Press and hold the LOAD(SAVE) key to enter the save standby status. SAVE and the memory
number in which the setting value is saved are indicated alternately. In this status, a memory
number in which the setting value is saved can be changed using the dial operation.
Operate the dial to end alternate lighting and only a memory number in which the setting value is
saved is indicated.
To save, press the “LOAD(SAVE)” key. The setting value is saved in the specified memory number
and the display returns to the previous setting screen.
To cancel saving, press the x2 key. The save standby status ends and the display returns to the
previous setting screen.
OperationDisplay
Press and hold
Select the memory
number
Cancel
Cancel saving
Press and hold
CCW
Save standby status
Operate the dial to specify
destination for saving
Indicates
alternately
CW
Confirm saving
Save the setting value
Saving the setting value when the power is OFF4.5.1.3
While using the unit on internal oscillation emission and external synchronous emission, press the
power switch and turn the power OFF to save the setting value to that which it was before turning
the power OFF.
When the power is turned ON again, operation starts from the previous setting value.
22
Page 23
Reading out each setting value4.5.2
This function is used to read out each setting value.
Reading out on internal oscillation emission4.5.2.1
Press the “LOAD(SAVE)” key in the internal oscillation emission mode to read out the setting value.
Each press of the “LOAD(SAVE)” key changes the memory number to call.
Each press of the LOAD(SAVE) key changes the memory number in the order of 1->2->3->4->5-
>0 (free mode)->1->....
The memory number being read is indicated on the memory number display.
OperationDisplay
No memory number
(Free mode)
Memory number 1
Each press of this
key
Memory number 2
Memory number 5
* After reading out the setting value, when any of the setting values for the emission count (FPM),
emission angle (DUR) and/or delay time (PHA) are changed, the called memory number display goes
off, and it goes to free mode.
23
Page 24
Reading out on external synchronous emission4.5.2.2
Press the “LOAD(SAVE)” key in the external synchronous emission mode to read out the setting
value.
Each press of the “LOAD(SAVE)” key changes the memory number to call.
The memory number being read is indicated on the memory number display.
OperationDisplay
No memory number
(Free mode)
Memory number 1
Each press of this
key
Memory number 2
Memory number 5
* After reading out the setting value, when any of the setting values for the emission count (FPM),
emission angle (DUR), and/or delay time (PHA) are changed, the called memory number display goes
off, then it goes to free mode.
24
Page 25
Function mode4.6
The following settings in the table can be configured in the function mode.
Setting itemDefault setting value
Function mode 1Measurement range setting120,000
Function mode 2Trigger edge settingL-H
Function mode 3Auto emission stop time setting0
Function mode 4External input signal settingOFF
Moving to the function mode4.6.1
Turn the power ON while pressing the MODE key to enter the function mode.
During the function mode, press the MODE key to indicate the next setting item.
The items that have been set are collectively saved when function mode 4 is moved to the emission
screen.
If the power is turned OFF in the middle of the function mode, the setting value will not be saved in
the memory.
OperationDisplay
Press and hold
Press once
Turn the power ON
while pressing the MODE key
Go to the function mode
After the above display is
indicated for 2 seconds,
go to function mode 1.
25
Page 26
Measurement range setting (Function mode 1)4.6.2
This function is used to set the measurement range on internal oscillation emission. The
measurement range has two levels. The indicated contents depend on the measurement unit
setting.
Measurement unit*Measurement range
fpm
* The emission count saved in the memory will be x10 or 1/10 by changing the measurement range.
Example: Save the emission count (frequency) of 6000 fpm in the range between 60 fpm and 120,000
fpm. After that, the saved value of the emission count (frequency) will be 600.0 fpm by
changing the measurement range to between 60 fpm and 12,000 fpm.
* If the emission count (frequency) setting value is set to the one beyond (or below) the range when
changing the measurement range, the value will be limited to the maximum (or minimum) value within
the range.
Example 1: Save the emission count (frequency) of 60,000 fpm in the range between 60 fpm and
120,000 fpm. After that, the saved value of the emission count (frequency) will be 12,000.0
fpm by changing the measurement range to between 60 fpm and 12,000 fpm.
Example 2: Save the emission count (frequency) of 100 fpm in the range between 60 fpm and 120,000
fpm. After that, the saved value of the emission count (frequency) will be 60.0 fpm by
changing the measurement range to between 60 fpm and 12,000 fpm.
(Available setting range: 60.0 to 12,000.0)
60 to 12,000
(Available setting range: 60.0 to 12,000.0)
60 to 120,000
Turn the dial to the CW direction to set the range to between 60 fpm and 120,000 fpm, and to the
CCW direction to set the range to between 60 and 12,000.
Operate the dial to stop the alternate display, then only the measurement range setting value is
indicated.
OperationDisplay
Indicates alternately
Change the setting
CCW
value
Go to function mode
2
* Previous setting value
CW
Go to function mode 2
26
Page 27
Trigger edge setting (Function mode 2)4.6.3
In the external trigger mode in which the edge of the external pulse triggers emission, the rising
edge or falling edge can be set.
When the trigger edge is set to L-H
External pulse
(Pulse entered from an
external device to DT-361/365)
Strobe emission
※※※
* Delay time (time based on the delay angle setting value)
When the trigger edge is set to H-L
External pulse
(Pulse entered from an
external device to DT-361/365)
Strobe emission
※※※
* Delay time (time based on the delay angle setting value)
* With a NPN open collector connected, emission is performed at the rising edge when the trigger edge
setting is L-H and at the falling edge when H-L.
27
Page 28
Turn the dial to the CW direction to set the trigger edge to H-L (falling).
Turn the dial to the CCW direction to set the trigger edge to H-L (rising).
Operate the dial to stop the alternate display and only the trigger edge setting value is indicated.
OperationDisplay
Indicates alternately
* Previous setting value
Change the setting
value
Go to function mode
3
CCW
CW
RisingFalling
Go to function mode 3
28
Page 29
Auto emission stop time setting (Function mode 3)4.6.4
This setting is used to stop the emission automatically when no operation is performed for a certain
period of time.
The available setting time is within the range between 0 min and 120 min, which can be changed
by 1 minute.
When it is set to 0, the auto emission stop function is turned OFF and emission is performed
continuously.
When emission is stopped by the auto emission stop function, use the key or dial operations to
restart emission.
OperationDisplay
Indicates alternately
* Previous setting value
Change the setting
value
Go to function mode
4
CCW
Go to function mode 4
Display when emission is stopped by the auto emission stop function
Key or
dial operations
CW
Restart emission
29
Page 30
Input signal setting (Function mode 4)4.6.5
Signals to be entered for external synchronous emission can be selected either from open collector
input or voltage pulse input.
Set it to ON to select open collector input, and OFF to select voltage pulse input.
For details about the circuit, refer to 4.7.2 External pulse input.
Press the MODE key to save the settings in the function mode and move to the emission screen.
OperationDisplay
Indicates alternately
* Previous setting value
Change the setting
value
Go to the emission
screen
Collectively save changes
of the function mode
Open collector inputVoltage pulse input
Go to the emission screen
30
Page 31
External I/O connector4.7
Specifications for external I/O connector and pin assignment4.7.1
•DT-361
Pin numberSignal nameRemark
1NC─
2NC─
312VDC 12 V power output
4OUTExternal pulse output
5INExternal pulse input
6COMExternal pulse input/output common
7NC─
8NC─
Connector (on the side of DT-361): Hirose (RM15WTP-8S(7))
•DT-365
Pin numberSignal nameRemark
1+24VDC 24 V power output +
2G24DC 24 V power output -
312VDC 12 V power output
4OUTExternal pulse output
5INExternal pulse input
6COMExternal pulse input/output common
7NC─
8NC─
Connector (on the side of DT-361): Hirose (RM15WTP-8S(7))
8
1
7
6
5
4
2
3
Connector pin number
31
Page 32
External pulse input4.7.2
Connect the unit to external devices (sensors, etc.) to allow the strobe to emit light using the pulse
signal from those devices in the external trigger mode.
(For details, refer to 4.4 External synchronous emission)
Available input frequency : Available measurement range 40 to 35,000fpm
Available delay emission range 60 to 10,000fpm
Available input pulse : Hi 2.5 to 12V
: Lo 0 to 0.5V
Available input pulse width : 50 μs or more
Available delay setting angle : 0º to 359º, available to set by 1º
Available delay setting time : 0 to 999 (max.) ms, available to set by 1 ms
[Input circuit]
External
I/O connector
5pin
6pin
12V
4.7k
10kΩ
10kΩ
12V
Switch in function mode 4
Go to the input circuit
(insulated by photo coupler)
External trigger pulse output4.7.3
Output the pulse to external devices simultaneously with emission while emission is performed in
the internal oscillation mode or external trigger mode.
A delay of approximately 30 μs caused by the internal circuit exists.
Output circuit specification : 12 V voltage output
Output pulse width : Approx. 200 μs
[Output circuit][Output timing]
External
I/O connector
4.7kΩ
3pin
(36V)
4pin
12V
Emission
External
pulse output
Inside DT-361/365
32
Approx. 200 μs
Page 33
Specifications5
ModelDT-361DT-365
ApplicationAC power input modelCharging battery built-in model
Emission count60 to 120,000fpm
Setting accuracy±0.02%
Available to set to the range between 60 fpm and 120,000 fpm, or 60 fpm
Measurement range setting
Measurement
Setting
display
Internal
oscillation
emission
External
synchronous
emission
Emission
duration
* 1 A delay of approximately 30 μs caused by the internal calculation process will be added.
resolution
(internal
oscillation)
Function to change the emission
frequency setting
Phase change function
Input interface
Pulse output interface
Synchronous edge switch
Frequency measurement range40 to 35,000fpm
Available delay emission range60 to 10,000fpm
Available phase setting range
Sensor powerDC12V/max50mA
Display6-digit red LED
Setting devicesMulti-turn encoder, tact switch
Emission sourceUltra luminosity LED 18 lights
ConnectorI/O signal connector
range:
60 to 12,000fpm
Measurement
range:
60 to 120,000fpm
AngleAvailable to set by 0.1º within the range between 0.1º and 3.6º (/360º)
TimeMax. 400 μsec
and 12,000 fpm
(Set in function mode 1)
60.0 to 3,000.0 : 0.1fpm
3,000.2 to 6,000.0 : 0.2fpm
6,000.5 to 12,000.0 : 0.5fpm
60.0 to 30,000 : 1fpm
30,00.2 to 60,000 : 2fpm
60,00.5 to 100,000 : 5fpm
100,010 to 120,000 : 10fpm
Available to change the emission frequency to an optional value
Available to change the emission frequency to double or half of the
current value
(Each press of the key changes the value to double, quadruple..., or half,
one-quarter, ...)
Based on the current emission phase,
For angle setting: by 1º within the range between 0º and 359º
For time setting: by 1 ms within the range between 0 and 999 ms (max.)
Voltage pulse input or open collector input of Hi: 2.5 V to 12 V and Lo: 0
V to 0.5 V
(Set in function mode 4)
12 V voltage pulse output
Pulse width: Approx. 200 μs
Available to select either the rising edge or falling edge
(Set in function mode 2)
Delay angle: by 1º within the range between 0º and 359º
Delay time: by 1 ms within the range between 0 and 999 ms (max.)
Power supply and I/O signal
integrated connector
33
Page 34
Memory function
Auto emission stop
•Saving the setting value when the power is OFF
•
Saving 5 setting values each on internal oscillation and external synchronous emission respectively
Available to set continuous emission, or set the time to stop emission by 1 minute within the range between 1 min and 120 min.
(Set in function mode 3)
Built-in NiMH battery
•Continuous emission time
Approx. 2 hours (when the emission duration is set to 3.6º)
Approx. 5 hours (when the emission duration is set to 1.0º)
PowerAC100 to 230V(50Hz/60Hz)
•Charging time: Approx. 2.5 hours
Supplied AC adapter
•Input : AC100 to 230V
•Output : DC24V
Operating temperature32 to 95 F (0 to 35 ºC)
Operating humidity35 to 85%RH
Operating environment No dust and/or corrosive gases
Compliance standardRoHS
Protection structureEquivalent to IP65 NEMA 4X
WeightApprox. 4 lb (1.8 kg)Approx. 4.6 lb (2.1 kg)
Standard accessoriesExternal I/O connector (8 pin) x 1Dedicated AC adapter x 1
External dimensions6
[DT-361]
[DT-365]
149
137
132
137
213
213
98
98
12
12
103
14.4
103
14.4
149
132
34
Page 35
Trouble shooting 7
SymptomsFactorsCausesTreatment
DT-365 does not flash and the
display shows LLLLLLL.
The display of DT-365 shows
LLLLLLL even though the
battery is fully charged
DT-365 does not flash even
though the power plug is
connected.
The battery charging lamp for
DT-365 does not go off even
after charging is finished
Flashing is not stable or stop
The display or FPM does
not change even though the
operation dial is rotated.
The display show the proper
FPM but the actual flash rating
does not change.
The display does not show
anything,. The strobe also
does not flash at all.
Battery voltage is lowBattery is not chargedPlease charge the battery
Less capacity in the
battery
No power at the LED
strobe
Charging not done.
Breakage in internal
circuit
Breakage in internal
circuit
Breakage in internal
circuit
Breakage in internal
circuit
Battery lifetime
Something wrong with
the battery
Something wrong with
the circuit
AC power plug is not
connected
AC power plug is broken.Send for repair
Battery lifetime
Something wrong with
the battery
Something wrong with
the circuit
Breakage in internal
circuit
Breakage in internal
circuit
Breakage in internal
circuit
Breakage in internal
circuit
Replace the battery
Please send it for repair if the
problem is not fixed after replacing
the battery
Check the connection
Replace the battery
Please send it for repair if the
problem is not fixed after replacing
the battery
Send for repair
Send for repair
Send for repair
Send for repair
35
Loading...
+ hidden pages
You need points to download manuals.
1 point = 1 manual.
You can buy points or you can get point for every manual you upload.