HP 16501A LOGIC Uživatelský manuál stáhnout pdf (Strana 21)

To trigger on a loop that occasionally runs too long

This example assumes the loop normally executes in 14 µs.

Select the state analyzer Trigger menu.

2 Define terms LP_START, LP_END, and Timer1 to represent the start

and end addresses of the loop, and the normal duration of the loop.

You can make the sequence specification closer to the problem domain by

renaming Timer1 to LOOP_DUR.

Under State Sequence Levels, enter the following sequence

specification:

•

While storing “anystate” Find “LP_START” 1 time

•

While storing “anystate” TRIGGER on “LOOP_DUR 14.00 µs” 1 time Else

on “LP_END” go to level 1

You will need to start the LOOP_DUR timer (Timer1) upon entering

this state. You do this using the Timer Control field in the menu for

sequence level 2.

•

Store “anystate”

Triggering on a Loop Overrun

Triggering

To trigger on a loop that occasionally runs too long

1–11

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 129 130

Žádné komentáře

HP 16501A LOGIC Uživatelský manuál Strana 21