0004-000067
35
Measure Process Variables
The following table lists the PVs for the Measure functionality. Up to 32 measurements
are performed automatically after each waveform acquisition, and the results updated in
the corresponding measurement PVs. In the following table,
N
is substituted with the
appropriate measurement number from 1 to 32 (for example: Meas1Enable), except
where stated otherwise. The corresponding measurements can also be viewed through
ZScope
TM
or the ztscopeM drivers as four lists of eight measurements.
Process Variable
Type
Values
Description
setMeasNMax
getMeasNMax
longout
longin
1 to 100
Sets or gets the maximum to use for
measurements. There are 100 maxima
possible counted in order of occurrence in
time. Default is the first maxima. NMax is used
maximum and time of maximum
measurements.
setMeasGateTimeStart
getMeasGateTimeStart
ao
ai
0 to
Maximum
waveform
length
Sets or gets the start measurement gate in
seconds, if setting the gates by time.
setMeasGateTimeStop
getMeasGateTimeStop
ao
ai
0 to
Maximum
waveform
length
Sets or gets the start measurement gate in
seconds, if setting the gates by time.
setMeasGateFreqStart
getMeasGateFreqStart
ao
ai
0 to ½ of
the current
Sample
Frequency
Sets or gets the start measurement gate in
Hertz, if setting the gates by frequency.
setMeasGateFreqStop
getMeasGateFreqStop
ao
ai
0 to ½ of
the current
Sample
Frequency
Sets or gets the stop measurement gate in
Hertz, if setting the gates by frequency.
setMeasGatePointStart
getMeasGatePointStart
longout
longin
0 to
Maximum
waveform
points
Sets or gets the start measurement gate in
points, if setting the gates by the number of
samples.
setMeasGatePointStop
getMeasGatePointStop
longout
longin
0 to
Maximum
waveform
points
Sets or gets the stop measurement gate in
points, if setting the gates by the number of
samples.
setMeasCurs
N
X
getMeasCurs
N
X
ao
ai
-Inf to +Inf Sets or queries the selected cursor’s position
on the x axis. Units depend upon the cursor
source waveform type. For normal time based
waveforms, the x axis is time. For FFTs the x
axis is frequency.
setMeasCurs
N
Y
getMeasCurs
N
Y
ao
ai
-Inf to +Inf Sets or queries the selected cursor’s position
on the y axis. Units depend upon the cursor
source waveform type. For normal time based
waveforms, the y axis is voltage.