The right-hand side of the D341A Sync & Train Module provides control of the Gating function so that a set number of pulses can be delivered at an accurately set repetition interval. The left-hand side of the D341A Sync & Train Module has the functions of the D334B Sync. If the repetition time is set too short so that a second repetition command is requested during a burst, it is ignored; the requested Number of Pulses is completed and an error is indicated.

Alternative Modules
D331AT Sync & Gate – defines burst duration in time rather than pulse number, otherwise identical to the D341A.