Fluke ScopeMeter 225C Getting Started Manual page 16

Fluke 19xC-2x5C
Getting Started
Select trigger level control:
• at automatic triggering via input A or B
( ):
AUTO TRIG
AUTO LEVEL :
: manual level control.
MANUAL
• at triggering via the meter input (
: select level 0.12V or 1.2V.
0.12V 1.2V
• at triggering on edges via input A or B
( , see F4 below):
EDGE TRIG
: adjust the level manually.
LEVEL
Use
Select trigger options:
Automatic...
signals >1 Hz or > 15 Hz (faster).
: turns off automatic triggering
On Edges...
and opens the
(screen update)
Update:
□
Free Run
trace even if there are no triggers.
□
On Trigger
when valid triggers occur.
12
automatic level control.
):
Ext
to adjust the trigger level.
: automatic triggering on
menu:
Trigger on Edge
: the test tool updates the
: the screen is updated only
□
Single Shot
trigger. After receiving a trigger, the
waveform is displayed and the
instrument is set to HOLD.
Press
Noise reject Filter:
reduces jitter on the screen when
triggering on noisy waveforms.
Each N
NCycle:
update.
Video on A...
signals (input A only).
Pulse Width on A...
qualified pulses (input A only).
Trigger Point, Trigger Delay
The trigger icon shows the trigger point. Initially you
have two divisions of pre-trigger view (negative delay).
To change the trigger delay, do the following:
Hold down to adjust the trigger delay.
If you move the trigger icon to the left of the screen, it
changes to . The status at the bottom of the screen
shows for example:
The 500ms indicates the (positive) delay between the
trigger point and the waveform display.
: the test tool waits for a
to arm for a new trigger.
the noise reject filter
th
trigger results in a trace
: enables triggering on video
: enables triggering on