User`s guide

Chirp
5-76
Target frequency (Hz)
For
Linear, Quadratic, and Logarithmic sweeps, the instantaneous
frequency, f
i
(t
g
), of the output at the Target time, t
g
. For a Swept cosine
sweep,
Target frequency is the instantaneous frequency of the output at
half the
Target time, t
g
/2. When Frequency sweep is Logarithmic, you
must set the
Target frequency to be greater than the Initial frequency.
Tunable.
Target time (sec)
For
Linear, Quadratic, and Logarithmic sweeps, the time, t
g
, at which
the
Target frequency, f
i
(t
g
), is reached by the sweep. For a Swept cosine
sweep,
Target time is the time at which the sweep reaches 2f
i
(t
g
)-f
0
. You
must set
Target time to be no greater than Sweep time, .
Tunable.
Sweep time (sec)
In
Unidirectional Sweep mode, the Sweep time, T
sw
, is the period of the
output frequency sweep. In
Bidirectional Sweep mode, the Sweep time
is half the period of the output frequency sweep. You must set
Sweep time
to be no less than
Target time, . Tunable.
Initial phase (radians)
The phase, , of the cosine output at t=0; . Tunable.
Sample time
The sample period, T
s
, of the output. The output frame period is M
o
∗T
s
.
Samples per frame
The number of samples, M
o
, to buffer into each output frame.
Supported
Data Types
See Also
T
sw
t
g
≥
T
sw
t
g
≥
φ
0
y
chirp
t() φ
0
()cos=
Double-precision floating point
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