A shorter Pause (PSE) in a program

[rprosperi]

Page 11 of Jeremy Smith's "HP-41 Synthetic Quick Ref Guide" (available on TOS) lists the timing (in mS) for every 41 normal (non-synthetic) instruction.

A PSE lasts 1300 mS; the only other instruction that is close is BEEP (1100 mS), but there are other combinations you can use to take up the desired amount of time, however most instructions are not stack-neutral, so you'll have to select commands which minimally change the stack in ways you may be able to easily correct, something like SDEV followed by RDN (a total of 496 mS).