Flash Rate Range

40-12, 500 Flashes Per Minute (FPM)

Accuracy

Flash Rate: +/- 0.5 fpm or +/- 0.01% of   reading, whichever is greater

Tachometer: +/- 0.5 rpm or +/- 0.01% of   reading, whichever is greater

Display 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

Flash Tube

Xenon, 10W, user replaceable; Life: 100   Million Flashes

Flash Duration

9-15 usec

Light Power

154 mJoules per flash

Battery

NiMH, rechargeable, removable; Capacity:   2.6 AmpHr; 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

115/220 VAC 50/60 Hz

Display

8 character by 2 line LCD, alphanumeric

Timebase

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 phono jack

External Trigger to Flash Delay

5 usec maximum

Clock Output

0-5V TTL type signal via stereo phono   jack

Housing

Impact & oil resistant polycarbonate

Dimensions

9.63" (244 mm) x 3.25" (82.6 mm) x 3.25"   (82.6 mm)

Product Weight

1.44 lbs (0.65 kg)

Package Weight

3.4 lbs ( 1.54 kg)

Included Accessories

rechargeable battery (BAT-900),   additional flashtube (FT-900), 120 VAC charging adapter (CH-900)

DT-900-UT

Traveler Kit: Same as DT-900-U with   additional padded belt holster and protective carrying case, spare flash tube

DT-900-UP

Professional Kit: Same as DT-900-U with   additional padded belt holster, protective carrying case, spare rechargeable   battery, spare flash tube

NIST-STROBE

NIST traceable certificate for digital   stroboscopes, includes data

CHU-900

Universal AC charging adapter for   rechargeable batteries

FT-900

Flash tube replacement for DT-900

PBH-900

Padded belt holster for DT-900

CASE-900

Protective carrying case with padded   inserts for DT-900 and accessories