
17
-
56 Analyzin
Waveforms in Probe
Rules for numeric values suffixes
Explicit numeric values are entered in the same form as
PSpice A/D (by means of symbol attributes in Schematics), with
the following exceptions:
• Suffixes M and MEG are replaced with m (milli, 1E-3) and
M (mega, 1E+6), respectively.
• MIL and mil are not supported.
• With the exception of the m and M scale suffixes, Probe is
not case sensitive, therefore upper and lower case characters
are equivalent.
Unit suffixes are only used to label the axis; they never affect the
numerical results. Therefore, it is always safe to leave off a unit
suffix.
The units that Probe recognizes are shown in Table 17-11
.
Table 17-11
Output Units Recognized by Probe
Symbol Unit
Vvolt
A amps
Wwatt
d degree (of phase)
s second
Hz hertz
Example: V(5) and v(5) are
equivalent in Probe.
Example: The quantities 2e-3,
2mV, and .002v all have the
same numerical value. For axis
labelin
purposes, Probe
reco
nizes that the second and
third forms are in volts, whereas
the first is dimensionless.
Probe also knows that W=V·A,
V=W/A, and A=W/V. So, if you
add this trace:
V(5)*ID(M13)
the axis values will be labeled
with W.
For a demonstration of analo
trace presentation, see
Analog
Example on page 17-22.
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