Oscilloscopes User's Guide

Triggering the Oscilloscope 4
6000 Series Oscilloscope User’s Guide 147
Hex Bus Pattern Triggering
You can specify a bus value on which to trigger. To do this, first
define the bus. See “To display digital channels as a bus” on
page 122 for details. You can trigger on a bus value whether you
are displaying the bus or not.
To trigger on a bus value:
1 Press the Pattern key on the front panel.
2 Press the Channel softkey and rotate the Entry knob to select
Bus1 or Bus2.
3 Press the Digit softkey and rotate the Entry knob to select a
digit of the selected bus.
4 Press the Hex softkey and rotate the Entry knob to select a
value for the digit.
5 You can use the Set all Digits softkey to set all digits to a
particular value.
When a hex bus digit contains one or more don’t care (X) bits
and one or more bit with a value or 0 or 1, the “$” sign will be
displayed for the digit.
For information regarding digital bus display when Pattern
triggering see “Bus values are displayed when using Pattern
trigger” on page 125.
NOTE
If a digit is made up of less than four bits, then the value of the digit will be
limited to the value that can be created by the selected bits.