Phone: 253-927-6186
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DT-900 Stroboscope Tachometer.

The DT-900 Stroboscope Tachometer is the perfect tool for slow motion or stop action stroboscopic
inspection, and is the only palm size unit to include a Phase Shift feature!
Phase shifting allows the TechStrobe tachometer operator to advance or retard the flash timing by
degrees° of angle, without changing the actual flash rate (FPM) of the TechStrobe. Employing its unique
Phase shifting feature, the TechStrobe "freezes" rotating or reciprocating machinery for visual inspection
of covered gear teeth, shafts, oil/fuel/ink injector patterns, and print media, and all without stopping production.

DT-900 Stroboscope Tachometer

Model  Description 
DT-900  Stroboscope (includes battery, charger, spare flashtube) 
DT-900U  Stroboscope (includes battery, universal charger, spare flashtube) 

Brightest flash of any strobe in it’s class
Long run per charge time
User adjustable flash rates
Buttons for easy x2 and ÷2 adjustment
Phase shift mode for full inspection of gears and rolls
Alphanumeric LCD display w/ easy user interface
One hand operation for right or left handed operators
Removable battery w/ built-in charge electronics
External trigger and clock output
Includes AC adapter and extra flashtube
TechStrobe kits include free padded belt holster

Designed for right or left hand, all TechStrobe functions are intuitive and easy to use.
Quality and Maintenance Professionals will appreciate the rotary and push button controls for internal
flash (FPM/RPM) control, external triggering, tachometer mode and Phase shift control.

The push buttons rapidly increase (x 2), or decrease (÷2) the flashes per minute (FPM) and change by
degrees° the Flash phase.

DT-900 Stroboscope Tachometer.
Model  DT-900 
Flash Rate Range  40.0 - 12,500 fpm (flashes per minute) 
Flash Rate Accuracy  +/- 0.5 fpm or +/- 0.01% of reading, whichever is greater 
Resolution  0.1 fpm for 100 to 9,999 fpm
1 fpm for 10,000 to 12,500 fpm 
Tachometer Range  40 - 59,000 rpm  
Tachometer Accuracy  +/- 0.5 rpm or +/- 0.01% of reading, whichever is greater  
Flash Tube
Xenon, 10 W max. (100 million flashes) 
Flash Duration  9 - 15 μsec 
Battery Type  NiMH, rechargeable, removable  
Battery Capacity  2.6 AmpHr  
Battery Charge Time  2-4 hours, using supplied AC adapter  
Run Time Per Charge  2.5 hours at 1600 fpm, 1.25 hours at 3200 fpm  
Battery Charger AC Input  115 VAC, 50/60 Hz / Universal charger optional  
Time base  Crystal oscillator, 100 ppm accuracy 
Controls  Power, multiply by 2, divide by 2, phase shift, external trigger 
External Trigger Input  0-5V TTL type via stereo phone jack 
Ext Trigger To Flash Delay  5 usec maximum  
Clock Output  0-5V TTL type signal via stereo phone jack  
Weight  1.5 lb (0.7 kg) 
Housing  Impact and oil resistant polycarbonate  
Warranty  1 year 
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Hotek Technologies, Inc
tel: 253-927-6186