MDO3000 Programmer Manual.pdf - 第468页

Commands Listed in A lphabetical Order Syntax MEASUrement:M EAS<x>:STATE {OFF|ON|<NR1 >} MEASUrement:M EAS<x>:STATE? Related Commands MEASUrement: MEAS<x>:SOUrce<x> , MEASUrement:MEAS<x&g…

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Commands Listed in Alphabetical Order
Group
Measurement
Syntax
MEASUrement:MEAS<x>:SOUrce<x>
{CH1|CH2|CH3|CH4|MATH|R1|R2|R3|R4|D0|D1|D2|D3|D4|D5|D6|D7
|D8|D9|D10|D11|D12|D13|D14|D15|HIStogram|RF_AMPlitude|
RF_FREQuency|RF_PHASe}
MEASUrement:MEAS<x>:SOUrce<x>?
Related Commands
MEASUrement:MEAS<x>:TYPe
Arguments
CH1–4 is an analog channel to use as the source waveform.
MATH is the math waveform.
REF1–4 is a reference waveform to use as the source waveform.
D0–D15 is a digital channel to use as the source waveform.
(MSO/MDO4000/B models only as well as MDO3000 and MDO400C models
with option MDO3MSO or MDO4MSO installed.)
HIStogram indicates the histogram is the object to be measured. HIStogram only
applies to SOUrce1; it is not allowed on SOUrce2.
RF_AMPlitude|RF_FREQuency|RF_PHASe are the RF time domain traces.
(MDO4000/B/C models only.)
Examples
MEASUREMENT:MEAS4:SOURCE2 CH1 specifies CH1 as the delay "to" source
when making delay measurement.
MEASUREMENT:MEAS2:SOURCE2? might return
:MEASUREMENT:MEAS2:SOURCE2 MATH1 indicating that Math 1 is the
measurement 2 source.
MEASUrement:MEAS<x>:STATE
This command specifies whether the specified measurement slot is computed
and displayed. The measurement slot is specified by <x>, which ranges from
1 through 8.
For a measurement to display, you must have selected a source waveform
and defined the measurement you want to take and display. You select the
measurement using the MEASUrement:MEAS<x>:SOUrce<x> command.
You define the measurement type using the MEASUrement:MEAS<x>:TYPe
command.
Group
Measurement
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-437
Commands Listed in Alphabetical Order
Syntax
MEASUrement:M
EAS<x>:STATE {OFF|ON|<NR1 >}
MEASUrement:MEAS<x>:STATE?
Related Commands
MEASUrement:
MEAS<x>:SOUrce<x>,
MEASUrement:MEAS<x>:TYPe
Arguments
OFF disables calculation and display of the specified measurement slot.
ON enables calculation and display of the specified measurement slot.
<NR1> = 0 disables calculation and display of the specified measurement slot; any
other value enables calculation and display of the specified measurement slot.
Examples
MEASUREMENT:MEAS2:STATE ON computes and displays the measurement
defined as measurement 2.
MEASUREMENT:MEAS1:STATE? might return :MEASUREMENT:MEAS1:STATE 0
indicating that measurement defined for measurement slot 1 is disabled.
MEASUrement:MEAS<x>:STDdev? (Query Only)
Returns the standard deviation of values accumulated for this measurementsince
the last statistical reset. Measurements are specified by <x>, the measurement
slots, from 1 through 8.
Group
Measurement
Syntax
MEASUrement:MEAS<x>:STDdev?
Examples
MEASUREMENT:MEAS1:STDDEV? might return :MEASUREMENT:ME AS1:STDDEV
21.0E-12.
MEASUrement:MEAS<x>:TYPe
This command specifies the measurement type defined for the specified
measurement slot. The measurement slotisspecifiedby<x>,whichrangesfrom
1 through 8 in all models except MDO3000, which only support 4 simultaneous
measurements.
Digital channel measurements do not have a user-settable midRef threshold. If
you specify a digital channel measurement that is not available, measurement
error 2200: measurement system error occurs and 9.9e37 is returned.
2-438 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual
Commands Listed in Alphabetical Order
Group
Measurement
Syntax
MEASUrement:MEAS<x>:TYPe
{AMPlitude|AREa|BURst|CARea|CMEan|CRMs|DELay|FALL|FREQuency
|HIGH|HITS|LOW|MAXimum|MEAN|MEDian|MINImum|NDUty|NEDGECount
|NOVershoot|NPULSECount|NWIdth|PEAKHits|PDUty|PEDGECount|PER Iod
|PHAse|PK2Pk|POVershoot|PPULSECount|PWIdth|RISe|RMS|SIGMA1|S IGMA2
|SIGMA3|STDdev|TOVershoot|WAVEFORMS}
MEASUrement:MEAS<x>:TYPe?
Arguments
AMPlitude measures the amplitude of the selected waveform. In other words, it
measures the high value less the low value measured over the entire waveformor
gated region. This measurement is applicable only to the analog channels.
Amplitude = High - Low
AREa measures the voltage over time. The area is over the entire waveform or
gated region and is measured in volt-seconds. The area measured above the
ground is positive, while the area below ground is negative. This measurement is
applicable only to the analog channels.
BURst measures the duration of a burst. The measurement is made over the entire
waveform or gated region.
CARea (cycle area) measures the voltage over time. In other words, it measures, in
volt-seconds, the area over the first cycle in the waveform or the first cycle in the
gated region. The area measured above the common reference point is positive,
while the area below the common reference point is negative. This measurement
is applicable only to the analog channels.
CMEan (cycle mean) measures the arithmetic mean over the first cycle in the
waveform or the first cycle in the gated region. This measurement is applicable
only to the analog channels.
CRMs (cycle rms) measures the true Root Mean Square voltage over the first
cycle in the waveform or the first cycle in the gated region. This measurementis
applicable only to the analog channels.
DELay measures the time between the middle reference (default = 50%) amplitude
point of the source waveform and the destination waveform. This measurement is
applicable only to the analog channels.
FALL measures the time taken for the falling edge of the first pulse in the
waveform or gated region to fall from a high reference value (default is 90%)to
a low reference value (default is 10%). This measurement is applicable only
to the analog channels.
FREQuency measures the first cycle in the waveform or gated region. Frequency
is the reciprocal of the period and ismeasuredinhertz(Hz),where1Hz=1
cycle per second.
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-439