HP 8591C User Manual page 348

standard tune configuration
The tune conEguration in which the channels are at the frequencies that
the Electronic Industries Association (EIA) and FCC define to be the
standard channel frequencies.
STD
See standard tune configuration
stop/start frequency
Terms used in association with the stop and start points of the
frequency measurement range. Together they determine the span of the
measurement range.
sweep time
The time it takes the local oscillator to tune across the selected span.
Sweep time directly affects how long it takes to complete a measurement.
It does not include the dead time between the completion of one sweep
and the start of the next. It is usually a function of frequency span,
resolution bandwidth, and video bandwidth. Resolution affects sweep
time in that the IF Elters are band-limited circuits requiring Enite times to
charge and discharge. The amount of time the mixing product remains in
the IF filter passband is directly proportional to the bandwidth; inversely
proportional to the sweep in Hz per unit of time. The rise time of a Elter
is inversely proportional to its bandwidth, and if the proportionality
constant "k" is included, then we can make the rise time equal the "k"
divided by resolution bandwidth. Mathematically, this is represented as:
Time in Passband =
Rise Time =
Solving for sweeptime:
Sweep Time =
synchronization pulse
A transmitted pulse that is used to synchronize the electron beam of a
picture monitor with the modulation of the transmission source.
resolution bandwidth
(spansweep time)
span
k
resolution bandwidth
k x span
2
resolution bandwidth
Glossary- 15