The mode for starting a sweep can be selected in the "Input" dialog between "Start Input" and "CH1 (Multi-Start)".

- In "Multi-Start" mode, the sweep is started with a pulse at the STOP1 input. This input connector is then exclusively
used for starting a sweep. The "Start" input is disabled. Subsequent pulses at the same input are recorded in the
Stop1 channel. No acquisition delay is necessary.

- In "Start Input" mode the special Start input connector is used for  starting a sweep. It has a dedicated threshold DAC
and is initially connected to the Stop1 input recording channel. Once the sweep is started, the input channel is switched
from the Start input connector to the Stop1 input connector. Now pulses feed to this connector are recorded in Ch1.

This logic was implemented to make 8 stop inputs possible. In "Multi-Start" mode only a maximum of 7 stop inputs are
available. Of course the switching costs some time and therefore a minimal acquisition delay of 6.4 ns is required.
If a customer wants to use the start input and see all stop events at the other inputs without acquisition delay,
he could delay all stop signals by 6.4 ns using cables. When not using Multi-Start mode, the value in the
"Acquisition delay" edit field cannot be changed to a lower value than 6.4 ns or 5.12 ns for 80 ps resolution.