Edited H2BC: Animated sequence

a) Standard sequence

b) Up-down sequence

Representation of the edited H2BC pulse sequence with a 3^rd order low-pass J filter.

The three "time lines" are ¹H channel, ¹³C channel and gradients. The animation shows the way the t₁ period is incremented and the different gradients for the echo and antiecho selection.

Filled black bars are /2-pulses, while the wider grey bars refer to -pulses. The bluish dashed boxes represent ¹³C decoupling.

= [ 2 × ¹J_H,C ]^-1. = (t( _H) + initial value of t₁)/2.