Tektronix RSA3303B, User Manual

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Functional Overview
Table 3: Status display (cont.)
Item Description
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 22.)
Figure 22: Pre- and post-trigger regions
Front Panel Key Lock
When controlling this instrument through GPIB, you can disable all the keys on
the front panel except the power switch using the :SYSTEM:KLOCK command.
At this time, the message "PANEL LOCK" is displayed on the top side key.
(See Figure 23.)
Figure 23: Key lock display
28 RSA3303B, RSA3308B, and RSA3408B User Manual