Agilent Technologies DSO-X 4022A, Руководство пользователя

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Triggers
10
Agilent InfiniiVision 4000 X-Series Oscilloscopes User's Guide 175
• 10 ns to 10 s for >< qualifier, with minimum difference of 5 ns
between upper and lower settings.
Pulse width
trigger < qualifier
time set softkey
• When the less than (
<
) qualifier is selected, the Entry knob sets the
oscilloscope to trigger on a pulse width less than the time value
displayed on the softkey.
• When the time range ( >< ) qualifier is selected, the Entry knob sets the
upper time range value.
Pulse width
trigger > qualifier
time set softkey
• When the greater than ( > ) qualifier is selected, the Entry knob sets the
oscilloscope to trigger on a pulse width greater than the time value
displayed on the softkey.
• When the time range (
><
) qualifier is selected, the Entry knob sets the
lower time range value.
Pattern Trigger
The Pattern trigger identifies a trigger condition by looking for a specified
pattern. This pattern is a logical AND combination of the channels. Each
channel can have a value of 0 (low), 1 (high), or don't care (X). A rising
or falling edge can be specified for one channel included in the pattern.
You can also trigger on a hex bus value as described on
"Hex Bus Pattern
Trigger" on page 178.
1
Press the
[Trigger]
key.
2 In the Trigger Menu, press the Trigger softkey; then, turn the Entry knob
to select Pattern .
3
Press the
Qualifier
softkey; then, turn the Entry knob to select from the
pattern duration qualifier options:
• Entered – when the pattern is entered.
• < (Less Than) – when the pattern is present for less than a time
value.
•
>
(Greater Than) – when the pattern is present for greater than a
time value. The trigger occurs when the pattern exits (not when the
> softkey time value is exceeded).
• Timeout – when the pattern is present for greater than a time value.
In this case, the trigger occurs when the > softkey time value is
exceeded (not when the pattern exits).