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The '''Tektronix 155-0076-00''' (M94) is a Tek-made input protection and probe logic | The '''Tektronix 155-0076-00''' (M94) is a Tek-made input protection and probe logic | ||
integrated circuit in a 16-pin [[minipac]] package, designed by [[John Addis]]. | integrated circuit in a 16-pin [[minipac]] package, designed by [[John Addis]]. | ||
==Probe Readout Ring Decoder== | |||
The M94 has a circuit for decoding the probe attenuation factor based on the probe readout pin. | |||
The probe readout pin contacts the readout ring on the probe input of the scope. | |||
The readout ring is pulled up to 5 volts by a 5 kΩ resistor. | |||
==Used in== | ==Used in== |