Tektronix SPECMON3 Manual page 272

Pulsed RF
Setting
Time method
Absolute time method
Ref (R)
Start (S)
Length (L)
Relative time method
Length
xxx
Impulse Response
260
Description
Specifies how the measurement's duration is determined. The choices are
Absolute and Relative.
Ref specifies the level along the pulse rising edge that is defined as the point
from which Start time is counted. Choices: 50%, 60%, 70%, 80%, 90% 100%;
Default: 100%
Start specifies the time the instrument waits after the rising-edge reference before
starting to measure the pulse. The Start time is measured from the point along the
pulse rising edge specified by the Ref setting. Start Range: ±100 ms; Resolution:
3 digits; inc/dec small: 1 ns, large: 1,2,5,10...; Default: 0
Length specifies the period of time that is used for pulse measurements The
measurement time begins at the Start point and continues for the amount of time
specified by Length.
In the Relative time method, Length specifies the percentage of the top of the pulse
that is used for measurements. The instrument automatically determines the pulse
top. The measurement length is centered within the pulse ON time.
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