The modern sampling oscillograph has got extended application in electronic and physical laboratories. In the conventional system the bandwidth increases as the duration of gating pulses decreases. On the other hand

however

it is preferable to have gating pulses of longer duration from the anti-interference point of view. It is proposed in this paper to employ low frequency equalizing network for the correction of the frequency response which is deteriorated in the sampling process if the gating pulse is not narrow enough. This has been proved theoretically and experimentally in this paper. In the experimental model

both rectangle and triangle gating pulses are tested. The results indicate that for certain desired bandwidth

much longer duration of the gating pulses may be used than is required in conventional sampling oscillographic system.