This read-write Integer32 sets the external delay compensation for the PPS signal, in nanoseconds, restricted to 0-90 in steps of 8 (values are rounded up to the next multiple of 8). An administrator adjusts it to offset propagation delay introduced by cabling so the pulse edge presented to downstream equipment lands at the correct instant, which matters for precision synchronization applications. For example, after measuring a 20ns delay on a long antenna cable run, the operator would set this to 24ns, the next multiple of 8.