HT201 attenuator allows the oscilloscope to measure the injector and primary ignition wave forms.
HT201 attenuator is a passive 20:1 attenuator. This means that a 20V signal is input, and a 1V signal is output.
Because the signal is attenuated, the HT201 attenuator allows the oscilloscope to measure voltages above its input range-20V.
HT201 attenuator provides enhanced input overload protection when used with oscilloscopes to measure inductive signals such as fuel injectors and primary ignition.
Never use it for secondary ignition tests. This attenuator should not be used for any high voltage measurements other than fuel injectors and primary ignition.