Canberra Lynx DSA, Руководство пользователя

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Digital Oscilloscope
Lynx DSA User's Manual - 9240227J 83
Trigger Source
The trigger source determines which signal will cause the acquisition of the
signal. Source options are as follows:
• Peak Detect • External Gate In
•
Slow Discriminator
•
Reject
•
Fast Discriminator
•
Inhibit
•
BLR Gate (Baseline Restorer)
•
Store
Please refer to the Digital Traces , below, for explanation on each trigger source.
Trigger Status
Status displays the current status of the trigger logic. Status will display
“Waiting” when the capture is waiting for a trigger condition, or “Triggered”
when the trigger condition has been satisfied.
Digital Traces
The trigger traces are displayed in the lower plot of the DSO display. Any
combination of the digital traces can be enabled or disabled through their
respective checkboxes to simplify the display. Digital Traces include:
•
Peak Detect – This signal displays the status of the spectroscopy filter
peak detector. The signal goes low when the signal crosses the slow
discriminator threshold level and begins searching for the peak signal
amplitude. The signal goes high when the system has detected the peak
amplitude.
•
Slow Discriminator – This signal displays the status of slow
(Spectroscopy) filter discriminator signal. This signal is high while when
the amplitude of the filter level is above the slow discriminator threshold
level.
•
Fast Discriminator – This signal displays the status of the fast filter
(Pile-up) discriminator signal. This signal is high while when the
amplitude of the filter level is above the fast discriminator threshold
level.
•
BLR Gate ( Baseline Restorer ) – This signal displays the status of the
slow (Spectroscopy) filter baseline restorer gate. Baseline restoration is
gated off when this signal is high and active while this signal is low
•
Store – This signal goes high when a pile-up free event is detected in the
slow filter. The event will be stored in the spectrum if the system is
acquiring and meets all storage qualifications the user has established
including LLD, ULD, Coincidence gating etc.