DT-326 LED Stroboscope Operation Manual Read manual thoroughly prior to operation. Use instrument only after reading the complete manual. Follow all safety precautions.
Safety Precautions 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.
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1 Summary The DT-326 LED Stroboscope is a portable, AC/DC powered precision instrument used to illuminate and measure the rotational speeds of objects with a certain speed and a constant period. By illuminating the rotating object with the DT-326, the moving object appears to remain still when the flashing rate of the DT-326 is equals the rotational speed of the target object. This allows inspection of rotating and moving parts, gears, shafts and others.
2 Product Inspection and Preparation 2.1 Confirmation of product packaging Confirm the following five parts in your DT-326 packaging: 1. One (1) LED stroboscope 2. Four (4) alkaline batteries (AA) 4. One (1) set of External input/output connector 3240-10P-C [HIROSE ELECTRIC CO., LTD.] 3. One (1) AC Adapter (120V/240V, 50/60Hz) 5. Operation Manual 6.
2.2 Removal of protective sheet Remove both protective sheets covering the operation panel and light source as shown below. Operation panel Protective sheet Light source 2.3 Installation of Battery Turn coin screws counter-clockwise to remove battery cover, and insert batteries in proper polarities as shown below: Coin screw Battery cover * Avoid battery leakage/ corrosion when not in use for extended period of time.
3 Names and functions of the components 3.
3.2 Operation panel 2 3 1 4 7 9 No. 5 8 6 10 Key Function Instructions 1 POWER Power the unit on or off 2 MODE Select Internal/ External/ Parameter mode of operation instruction 3 SET Unit change, Select parameter setting item, Store setting value. 4 ×2 Multiplies the flash rate/frequency by a factor of 2. 5 1/2 Divides the flash rate/frequency by a factor of 2. 6 RATIO Adjusts the flash duration (flash pulse width) in Internal/External mode.
3.3 LCD Display 3.3.1 Display Names and Descriptions Battery indicator Main data display Setting project Unit Sub data Auto Range Trigger Divider Edge Delay Deg Flash Time Mem AveLastMinMax min sec Hz Ave Last Min ○ ms 3.3.2 Main data display - Internal flashing mode: Displays flash rate. - External trigger mode: Display external trigger frequency. -Display will indicate “P” or “LCD” (in ON/OFF setting of LCD backlight) in *Parameter setting mode.
3.3.
4 Function Instructions 4.1 Power on/off 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).
4.3 Internal flashing mode 4.3.1 Instruction for Internal flashing mode Battery power indication Flashing time (Hz shown) setting Flash indicator Auto Range Trigger Edge Deley Deg Flash Time Ave Last Min Max Internal flashing mode min sec hHz ○ Unit (min or Hz) “Min” means Eco mode Total phase shift angle 4.3.2 Changing Units of Measure in Internal Mode Press and release “SET” key to toggle between FPM and Hz measuring unit.
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.
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 Auto Range Trigger Ehidge Deley Deg Flash Time Ave Last Min Max min sec hHz ○ ×2 ○ Ex.
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 slowly rotating CW or CCW 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.
Press the “RATIO” key. The current mode will start blinking for 5 seconds allowing modification at this point.
Operation Expression FLASH PHASE+ Press and release OR … 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 Or Auto Range Trigger Edge Deley Deg Flash Time Ave Last Min Max min sec hHz ○ ○ Incremented 0.2°/ 360 ° Flash duration (RATIO) 0.1°/ 360° min sec hHz Maximum 2.
4.4 External Trigger Mode This mode allows synchronization of the FPM with external signal input such as a sensor. See section 4.7 for details. Parameter settings are possible, like phase shift, delay time, flash duration, edge trigger. 4.4.
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. st The unit will begin flashing after the 1 trigger pulse as detected per timing chart below.
Press "PHASE+" key to select the delay time setting. Turn dial CW to increase and CCW to decrease.
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 360° × Period of External Input + approx. 60us (Built-in) st While the DT-326 does not flash at the 1 trigger pulse as shown below in the timing chart.
Delay Angle setting will decrease from 359°(Max) t o 0°(Min) value for counter clockwise. The setting s will eventually go to 0°as when angle decreases from 359 °. ・・・・ Auto Range Trigger Edge Delay Deg Flash Time Ave Last Min Max Turn counter clockwise Auto Range Trigger Edge Delay Deg Flash Time Ave Last Min Max min sec hHz ○ ms Auto Range Trigger Edge Delay Deg Flash Time Ave Last Min Max min sec hHz ○ ms PHASE+ min sec hHz ○ ms Go to delay time setting 4.4.
4.5 Parameter Setting Instruction Press “MODE” until the LCD displays “P” (Parameter setting mode). Press the “SET” key to cycle between the various parameter settings available (range, trigger edge, delay time, and LCD backlight). For more information regarding the various parameter settings, please refer to sections 4.5.2 through 4.5.4 below. Press the “MODE” key again to store the settings and return to measuring modes. Note: “MODE” key must be pressed to store settings.
4.5.1 Measurement range setting The DT-326 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 FPM Hz Measuring range as Indicated in Parameter Settings 12,000 120,000 (range 60.0 - 12,000.0) (range 60 - 120,000) 200 2,000 (range 1.000 - 200.00) (range 1.00 - 2000.
Operation Expression FLASH PHASE+ Press and release Auto Range Trigger Edge Deley Deg Flash Time Ave Last Min Max FLASH PHASE+ min sec hHz Or Auto Range Trigger Edge Deley Deg Flash Time Ave Last Min Max ○ ms Turn clockwise min sec hHz ○ ms Measuring range set to “1 – 2000 Hz” Measuring range set to “1 – 200 Hz” FLASH PHASEPress and release Auto Range Trigger Edge Deley Deg Flash Time Ave Last Min Max min sec hHz ○ ms Turn counter clockwise FLASH PHASEOr Auto Range Trigger Edge Deley Deg F
4.5.2 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 leading edge of the input pulse (when delay setting is zero). External Pulse signal from machine/sensor Stroboscope flash * * * *Delay time (based on the delay settings of parameter) -When the trigger edge setting is set to “Negative Edge”, the flash will occur on the trailing edge of the input pulse (when delay setting is zero).
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.
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 refers to “4.4.
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).
4.5.4 Back light setting Press “SET” key in Parameter mode to enable this mode. Turning off the backlight will conserve battery power. For more information regarding the automatic settings of the backlight, see section 4.6. Press “PHASE +” key to turn on the backlight.
4.7 Connector of External input/output 4.7.
4.7.4 Option Cable- Input/ Output cable adaptor Because the connector of the unit is not separate from input and output signal, the option cable adapter separated I/O is provided for easy connection.
5 Specifications Model Number DT-326 Units of measure FPM (flashes per minute) or Hz (frequency) Measuring range 1 - 2,000Hz 60 - 120,000 FPM Accuracy Resolution of flash rate setting in internal mode +/-0.02% (at 73°F [23°C]) Unit; Hz Unit; FPM Flashing time (Duty) Mode Internal External trigger Measuring range: 1-200 Hz Measuring range: 1-2000 Hz Measuring range: 60 - 12,000 FPM 0.
Display LCD 6 digits (main), 5 digits (sub) Back light Flash Source Life time “LOW BAT”, “Setting item”, “Unit” Yellow green LED Super High Brightness White LED 5500K (typ) More than 1500 hours (approx. 5X108 times at 6000 FPM) Luminance Normal 20cm | 6,000FPM About 1300 lx (typ value) mode 50cm | 6,000FPM About 200 lx *2 ECO mode 20cm | 6,000FPM About 400 lx 50cm | 6,000FPM About 100 lx Battery Alkaline AA battery (1.5V×4pcs) *3 AC adapter Charge function DC5V / 2.
Dimensions Top 70mm (2.36”) (2.76”) (8.66”) 69mm 60mm (2.72”) Side 220mm 1/4-20UNF Depth 8mm Front 3mm 36mm 52mm (0.12”) (1.42”) (2.05”) Back Bottom 32 (5.95”) (0.
