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A Maximum of 3GHz(SC-7217A), and the Digit Display Greatly Increased to Accommodate a Maximum of 12Digits/sec The SC-7217A / SC-7215A universal counters provide full capabilities including frequency, period, time interval, pulse width, phase, frequency ratio, duty cycle, event accumulation and peak voltage measuring, with simple operation. They are suitable for R&D and technical training as a basic measuring instrument as well as for production/inspection lines.

	Easy operations with single key strokes for each action.
	Making line inspection tasks more efficient is a simple chore with the comparison and statistic calculation functions.
	The scaling calculation function enables single unit conversion (revolutions, speed, etc.)
	Input signal peak voltage measurements make it easy to confi rm the waveform amplitude.
	The save/recall function for panel setup makes predetermined inspection tasks more effi cient.
	USB, LAN, RS-232 (option) and full remote control with GPIB (option)
	Full lineup of options to provide greater expandability ・ Data stored on USB storage memories. ・ High-stability clock oscillator option.

Measurement function Combinations between the functions and gates

The following table shows combinations between the functions and gates.

Measuring functions SC-7217A SC-7215A Gate Internal 10μs-10s EXT-B MANUAL SGL Internal 10μs-10s EXT-B MANUAL SGL FREQ-A(Frequency) ○ ○ × ○ ○ ○ × ○ FREQ-B(Frequency) ○ × × ○ ○ × × ○ FREQ-LINE(Frequency) △ × × × △ × × × FREQ-C(Frequency) ○ ○ × × × × × × PERI-A(Period) ○ ○ × ○ ○ ○ × ○ DUTY-A(Duty cycle) ○ × × ○ ○ × × ○ P.W-A(Pulse width) ○ × × ○ ○ × × ○ TOT-A(Totalize) ○ ○ ○ × ○ ○ ○ × T.INT A-B(Time interval) ○ × × ○ ○ × × ○ FREQ A/B(Frequency ratio) ○ × × × ○ × × × PHAS A-B(Phase) ○ × × ○ ○ × × ○

○ : Can be selected　× : Invalid　△ : 10 μs, 100 μs, 1 ms, and 10 ms are invalid

Frequency miasurements

Gate selection EXT-B/time (set as 10 μs to 10 s × 10n)
The display digits for time gate, EXT-B gate, and single gate are listed in the table below.

Gate FREQUENCY A,B FREQUENCY C 10 µs gate 7 digits *1 7 digits *2 100 µs gate 8 digits *1 8 digits *2 1ms gate 9 digits 9 digits 10ms gate 10 digits 10 digits 0.1s gate 11 digits 11 digits 1s gate 12 digits 12 digits 10s gate 13 digits 13 digits EXT-B gate No. of digits is determined based on EXT-B gate time *2 Single gate No. of digits is determined based on measurement signal -

*1 EXT-B cannot be selected during FREQ-B measurement.
*2 GATE 1/1000 setting is required for 10 μs gate and 100 μs gate.