Agilent Technologies DSO-X 4022A, Руководство пользователя

Страница: 168 / 488

168 Agilent InfiniiVision 4000 X-Series Oscilloscopes User's Guide
10
Triggers
This key is useful in the Normal trigger mode where acquisitions are made
only when the trigger condition is met. In this mode, if no triggers are
occurring (that is, the "Trig'd?" indicator is displayed), you can press
[Force
Trigger] to force a trigger and see what the input signals look like.
In the Auto trigger mode, when the trigger condition is not met, triggers
are forced and the "Auto?" indicator is displayed.
Edge Trigger
The Edge trigger type identifies a trigger by looking for a specified edge
(slope) and voltage level on a waveform. You can define the trigger source
and slope in this menu. The trigger type, source, and level are displayed in
the upper- right corner of the display.
1
On the front panel, in the Trigger section, press the
[Trigger]
key.
2
In the Trigger Menu, press the
Trigger
softkey, and use the Entry knob
to select Edge .
3 Select the trigger source:
• Analog channel, 1 to the number of channels
• Digital channel (on mixed- signal oscilloscopes),
D0
to the number of
digital channels minus one.
• External — triggers on the EXT TRIG IN signal.
• Line — triggers at the 50% level of the rising or falling edge of the AC
power source signal.
•
WaveGen 1/2
— triggers at the 50% level of the rising edge of the
waveform generator output signal. (Not available when the DC, Noise,
or Cardiac waveforms are selected.)
• WaveGen Mod (FSK/FM) — when waveform generator FSK or FM
modulation is used, triggers at the 50% level of the rising edge of the
modulating signal.
You can choose a channel that is turned off (not displayed) as the
source for the edge trigger.
The selected trigger source is indicated in the upper- right corner of the
display next to the slope symbol:
• 1 through 4 = analog channels.