Tektronix RSA2200A, Руководство пользователя

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Trigger
3- 92
RSA2203A & RSA2208A User Manual
Stop and Show Results. Stops data acquisition and shows measurement results.
Instead of the
RUN/STOP
key, you can stop data acquisition by pressing the
Stop and Show Results side key when the measurement mode is Real Time
S/A, Demod, or Time. However, there is the following difference in function:
H
Pressing the RUN/STOP key to stop data acquisition: The block data
acquired at the moment of pressing the key is discarded and the measure-
ment results are shown for the previous block of data.
H
Pressing TRIG ➝ Stop and Show Results to stop data acquisition: Shows
measurement results even for the block of data acquired at the moment of
pressing the side key, which might not fill a whole block.
In either case, press
RUN/STOP
again to restart acquisition.
Source. Selects a trigger source when the trigger mode is Triggered.
H
Level (Full BW).
Default
. Uses the internal IF (intermediate frequency)
signal of the analyzer as the trigger source. The Trigger Level and Position
can be set. Refer to page 3--96 for information about the IF trigger.
H
External. Uses the external signal input from the TRIG IN connector on the
rear panel as the trigger source. You can set the trigger level, slope, and
position. For the specification of the external trigger, refer to page A--10.
Level.
Sets the trigger level. Available when the trigger mode is set to Triggered
and the source is Level.
Range: 1 to 100% in 1% step (100% means full scale of the internal A/D output)
For the external trigger, the trigger level is fixed internally. For specifications of
the external trigger, refer to page A--10.