Model DT-311J And DT-311J-230V(AC) DIGITAL STROBOSCOPE INSTRUCTION MANUAL
1. GENERAL The DT-311J DIGITAL STROBOSCOPE is designed to assist mechanical timing adjustments and emit flashes synchronously with an external signal and an internal signal. Flashes can be delayed continuously from 0 up to 359 degrees at a positive edge of an external signal by regulating the adjustment knob and the delayed angle is shown on the LED display. Zero position can be set to any optimal synchronous position. Revolutions per minute (RPM) can also be displayed.
2. SPECIFICATIONS (1) (2) (3) (4) (5) (6) (7) Flashing range Phase shift Internal signal range Delay setter Display Divided ratio Input signal (8) Input impedance (9) Display mode (10) Accuracy (11) Flash tube (12) Operating temperature (13) Power requirement (14) Power consumption (15) Dimensions (16) Weight (17) Accessories included 200 – 1,500 rpm 0 – 359º 200 up to 1,500 rpm ROTARY ENCODER 4 digits, 10mm high, Red LED 1/1, 1/2, 1/3, 1/4, 2/4 with shift High level, 5 to 24v pulse width, 2 msec min.
3. DIAGRAM A. Front panel (1) (2) (3) (4) (5) Xenon lamp Protective window Protective window screws Reflector Handle B.
(3) (4) (5) (6) (7) (8) (9) (10) Power switch Connector Mode select switch Setting knob: for Flash Rate and Phase Shift adjustment Zero setting switch Divide ratio select switch Stroboscope flash: on/off switch Shift switch 4. CABLE CONNECTION Connect power and signal with provided cable as follows: 110 VAC or 230VAC at 50/60 Hz AC plug (with 3-prong plug) Red clip Signal (positive) Black clip 0V 5. MODE SELECTION Press (MODE) switch (5) to select internal or external signal mode.
. INTERNAL SIGNAL OPERATION When internal signal mode is selected (‘INT’ LED on), flash rate is adjusted by turning the setting knob (6). 7. EXTERNAL SIGNAL OPERATION When external signal mode is selected (‘deg’ or ‘rpm’ LED on), flashing rate is synchronized with the external signal. Deg rpm Delayed angle # of revolutions per 1 minute Degree rpm (1) DIVIDE RATIO SETTING (See 8. FLASH INTERVAL for detail) Select 1/1 to provide a flash per every 1 rotation.
8. FLASH INTERVAL (1) FLASH MODE Flashing behavior at each mode.
Every time you depress the shift button (SHIFT), the flashes slide to the next pulse.
MODE 2/4 1 ON 2 2 ON 5 3 3 ON 1 ON 1 6 4 4 2 6 9 7 7 5 5 10 8 8 6 10 9 9 10 9. LAMP ON/OFF SWITCH LAMP ON/OFF switch provides power to the lamp. To save the flash tube and general lamp life, turn the lamp off when not in operation. Once power is applied and no adjustments are made during the next 30 minutes, the flashing will automatically turn off the lamp causing the display to flash rapidly. To continue operation, press the LAMP ON/OFF switch and the flashing will continue.
. ALARMS 1. LOW SPEED INDICATOR (External signal operation only) Below 180 rpm, the “under” symbol appears. At degree mode At rpm mode 2. HIGH SPEED INDICATOR (External signal operation only) Over 1,550rpm “over” symbol appears. At degree mode At rpm mode If AC power is low, the flashing will stop and “LLLL” will be displayed. If an alarm symbol appears, (“under”, “over”) the stroboscope flash will not function.
. INPUT CIRCUITRY 12. LAMP REPLACEMENT Indications: • Lamp life is about 100 million flashes. • Rotation speed is displayed, no flash is emitted. • When the flash is intermittently emitted, this indicates the lamp must be replaced. • Only replace flash tube with the specified lamp: (FLASHTUBE311-J). Directions: (1) After unplugging the line cable from the power line, let the stroboscope sit for about 30 minutes or longer. Be sure stroboscope is cool to the touch before replacing the lamp.
13. INITIAL RESET Factory default settings: Simultaneously press the LAMP ON/OFF button and ZERO. Next press the “Power” switch on. The memory will be cleared and the factory default condition will resume. Contact Shimpo Instruments with any questions or concerns: Shimpo Instruments 1701 Glenlake Avenue Itasca, IL 60143 USA p: (800) 237-7079 f: (630) 924-0342 www.shimpoinst.com info@shimpoinst.
