Agilent Technologies 2000 X-Series, User Manual

Page: 130 / 352

130 Agilent InfiniiVision 2000 X-Series Oscilloscopes User's Guide
10
Triggers
Hex Bus Pattern Trigger
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 94 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 96.
N O T E
Specifying an Edge in a Pattern
You are allowed to specify only one rising or falling edge term in the pattern. If you define an
edge term, then select a different channel in the pattern and define another edge term, the
previous edge definition is changed to a don't care.
N O T E
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.