Xenus XSL User Guide
Using CME 2
Copley Controls Corp.
137
Trigger Setup
Access the screen by clicking Trigger Setup (
).
The settings described below determine what triggers the start of a trace.
Setting Description
Trigger Type
Selects trigger type.
•
Immediate Trigger: Trace begins as soon as
Record
is pressed.
•
Rising Edge: Trace triggers when (after Record is pressed) the trigger signal rises though the trigger
level setting.
•
Falling Edge: Trace triggers when (after Record is pressed) the trigger signal falls though the trigger
level setting.
•
Above Level: Trace triggers when the trigger signal is greater than or equal to the trigger level setting.
•
Below Level: Trace triggers when the trigger signal is less than or equal to the trigger level setting.
•
Function Generator: Trace begins in synchronization with the
Function Generator
.
•
Move Start (position mode only): Trace begins in synchronization with the trajectory generator
Trigger On
Selects which channel will be used as the trigger signal.
Channel 1, 2, 3, or 4.
Position
Selects placement of the trigger event on the screen. (Value is not configurable for Immediate,
Function Generator, or Move Start trigger types.).
•
Left
for optimal viewing of events following the trigger;.
•
Middle
for optimal viewing of events preceding and following the trigger.
•
Right
for optimal viewing of events preceding the trigger.
Level
Sets the trigger level. The
Level
is expressed in units appropriate to the channel selected.
Auto Trigger
The Auto Trigger option automatically sets the trigger type to Function Generator or Move Start,
depending on which generator is being used. Note that Auto Trigger is automatically set (check in
box) when Auto Setup is set.
Trace Time and Sample Rate
Trace Time sets the length of the recorded trace. Sample Rate is the rate at which the signals are
sampled. The rate depends on the trace time, the number of channels selected, and which
variables are being traced.
Single Trace
Single Trace puts the scope in a single trace mode of operation. In this mode, the trigger is not re-
armed after a trace until the user presses the
Record
button. Single Trace is automatically set by
the generators in certain cases.
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