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The '''Tektronix 7D15''' is a 225 MHz frequency counter plug-in for [[7000-series scopes]]. It is optimized for timing measurements, having a 100 MHz oscillator and interval measurement averaging capability. It has two inputs and can measure frequency, period or time difference. The 7D15 was introduced in November 1972. | The '''Tektronix 7D15''' is a 225 MHz frequency counter plug-in for [[7000-series scopes]]. It is optimized for timing measurements, having a 100 MHz oscillator and interval measurement averaging capability. It has two inputs and can measure frequency, period or time difference. The 7D15 was introduced in November 1972. | ||
The front panel uses [[ | The front panel uses [[SMB connector]]s for arming, clock in/out and reset signals. | ||
==Specifications== | ==Specifications== |