Coincidence
Coincidence is the ability to qualify the recording of incoming events. A qualifying
(gate) signal must arrive within a time window which is selectable by the user.
The gate input signal at the COINC/ANTI connector of the instrument determines
which incoming signals are recorded. Events which do not meet the qualification re
-
quirements are not recorded.
Mode (Gating Mode)
Select the gating mode, Coincidence or AntiCoincidence, or none.
•
In Coincidence mode, an incoming pulse of the selected polarity within the
selected gate window permits recording of the event.
•
In AntiCoincidence mode, an incoming pulse of the selected polarity within the
selected gate window inhibits recording of the event.
Polarity
Selects the polarity of the gate input. Positive or Negative.
Gate Delay (
s)
Selects the time window available for arrival of the qualifying gate pulse. Recording
of the event is delayed until the qualifying signal occurs or the window time expires.
External Start/Stop
External Start and Stop signals arriving at the rear panel PHA ACQ SS connector can
be used to control data acquisition.
Four modes of External Start/Stop control are supported, and the polarity of the con
-
trol input is selectable. Your mode selection affects both inputs in the same manner.
A fifth mode option, None, is provided which disables External Start/Stop control.
Initially, External Start/Stop control is disabled.
Chapter 4 - Web-based Operation Acquisition Setup
80 Lynx™ Digital Signal Analyzer
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