Nova-Strobe x - The standard for high intensity multi-function portable stroboscopes. Models are available with digital displays, battery or AC power, and a useful range of features which provide unmatched performance and value. Four models range from the Nova-Strobe dbx Deluxe the most versatile battery powered digital stroboscope with internal phase shifting, down to the Nova-Strobe bax Basic, the most cost effective AC powered digital stroboscope. Both the battery powered Nova-Strobe dbx and AC powered Nova-Strobe dax provide a range of 30 to 20,0000 flashes per minute and an accuracy of ±0.002 of setting. Flash rates are easily adjusted to fractional RPM by a coarse/fine control knob. Individual TTL compatible input and output jacks are provided for ‘daisy chaining’ of multiple strobes, triggering from an external source, or providing a trigger signal to external equipment. Both dbx and dax provide internal phase shifting to keep the target precisely in view. Both provide x2 and ÷2 capability for distinguishing actual RPM from harmonic frequencies. In addition, 9 user presetable memory flash rates for repetitive measurements and storage of the last flash rate measured are included.