[Source:]Sweep; [Source:] - HP E1340A User Manual

[SOURce:]SWEep

Sweep Considerations
Chapter 7
The [SOURce:]SWEep subsystem selects:
The number of points in a frequency sweep.
The sweep rate for frequency sweeps.
Frequency sweeping generation requires that
SWEep be set.
Frequency sweeping is controlled entirely by the on-board microprocessor
on the HP E1340A module. Only continuous repetitive sweeping is
supported. A sweep is started by the
advances at a fixed rate determined by the number of points in the sweep
and the sweep time.
The minimum and maximum number of frequency points in a sweep are
constrained by the frequency span and the sweep time.
Looking at the span considerations, and assuming that the internal
42.94967296 MHz reference oscillator is used, the minimum and maximum
frequency increments per frequency point of a 4,096 point waveform are
.01 Hz and 15 MHz. Thus, when sweeping a 4,096 point waveform from
1 kHz to 10 kHz, the minimum number of points is 2, and the maximum is
(10 kHz - 1 kHz) / .01 Hz + 1, or 900,001 points.
Considering sweep time, the fastest the HP E1340A can sweep is 187 S
per frequency point with AC amplitude correction disabled, or 250 S per
point with AC amplitude correction enabled. Up to 25.5 mS additional
delay per frequency point is possible in 100 S increments. Thus, the
fastest amplitude corrected sweep will proceed at a rate of 15 MHz/point /
250 S/point or 60 GHz per second. The slowest non-amplitude corrected
sweep will proceed at a rate of .01 Hz/point / 25.687 mS/point or about
0.3893 Hz per second.
Also, sweeps are limited to a minimum of 2 points (the start and stop
frequencies) and a maximum of 1,073,741,825 points (not a real concern,
since each sweep would take a minumum of 3.1 days to complete).
The SOURce:SWEep:POINts
when or
MINinum MAXimum
command considers the currently specified number of points and whether
AC amplitude correction is enabled when
specified.
[SOURce:]SWEep:SOURce
SOURce:FREQuency:MODE
INITiate:IMMediate
command considers all these constraints
is specified. The
SOURce:SWEep:TIME
MINinum or
HP E1340A Command Reference
command and
MAXimum is
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