Tektronix WCA200A, User Manual

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Interface Maps
2- 10
WCA230A & WCA280A User Manual
The status display area in the upper right side of the screen (see Figure 2--7)
shows the instrument status as listed in Table 2--2.
Status display
Figure 2- 7: Status display
Table 2- 2: Status display
Item Description
ARM The pre-trigger portion of the acquisition record is filling.
A trigger event occurring during this state will not be recognized.
READY Pre-trigger data has been acquired, and the instrument is waiting for a
trigger event.
TRIG’D Pre-trigger data has been acquired, and a trigger event has been detected.
The instrument is now acquiring post-trigger data.
FREE RUN The instrument acquires and measures without waiting for a trigger event.
PAUSE The user has temporarily stopped acquisition/measurement cycling.
The acquired data is stored in the data memory from address zero in order of
acquisition. When you set a trigger condition, the acquired data is stored in the
pre-trigger region until the trigger event occurs. Thereafter, it is stored in the
post-trigger region (see Figure 2--8).
Pre-trigger region Post-trigger region Data memory
Trigger point
Time
Figure 2- 8: Pre- and post-trigger regions
Status Display