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Which One? There are three:
? The 1st one Tek made has no Tek part number on it but it does say on the front panel: High Amplitude Pulse Generator. This unit has a Step Attenuator, Variable Amplitude control, and a GR874 plug which you connect a length of coax to. The coax acts as a charged line and determines the duration of the output pulse.
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Mine has an SMA for the charge line. But that is in addition to an internal charge line.
Craig