Physiological Signal 7-3
Tips:
The trigger mark is displayed in both freeze mode and live mode.
The marks in Dual trigger are different in color.
Trigger function is unavailable if the ECG trace is disappeared. Only the live 2D image can
be triggered.
No delay time or time interval shall less than the time required to scan a single image.
If the delay time is longer than a heart cycle, then the heart cycle between the delay time
is omitted, that is to say no trigger is occurred when R waveform is detected in the
duration.
7.1.2.2 Triggering Mode
There are three triggering modes available: Single, Dual and Timer.
Single Trigger: when an R waveform is detected, the image will be triggered after delay
time T1. The value of T1 can be changed in triggering status.
Dual Trigger: when an R waveform is detected, the image will be triggered respectively
after delay time T1 and T2. The value of T1 and T2 can be changed in triggering status.
Timer Trigger: an image will be triggered after a certain interval. The time interval can be
changed in triggering status.
The image trigger operation is described as follows (Take single trigger as an example):
1. Select exam mode.
2. Touch [Trig Mode] on the touch screen to enable the trigger.
3. Select [Single].
4. Set the delay time on the soft menu according to actual situation.
7.1.2.3 Real & Trigger
Click [Real & Trigger] on the soft menu to enable or disable the real trigger function.
After the [Real & Trigger] is turned on, two images are displayed respectively in two windows, one
is triggered by ECG, and the other is non-triggered real time image.
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