MDO3000 Programmer Manual.pdf - 第255页

Commands Listed in Alphabetical Order if the position for Channel 3 is set to 2.0 and the offset is set to 3.0, then input signals equal to 3.0 units are displayed 2.0 divisions above the center of t he screen (at 1 V/di…

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Commands Listed in Alphabetical Order
Table 2-52: Cha
nnel Offset Range
Offset range
V/Div Setting 1 MΩ Input 50 Ω Inp ut
1 mV/div — 50 mV/div
±1 V ±1 V
50.5 mV/div — 99.5 mV/div
±0.5 V ±0.5 V
100 mV/div — 500 mV/div
±10 V ±5 V
505 mV/div — 995 mV/div
±5 V ±5 V
1V/div—5V/div
1
±100 V ±5 V
5.05 V/div — 10 V/div
1
±50 V
N/A
1
For 50 Ω input, 1 V/div is the maximum setting.
NOTE. The above table describes oscilloscope behavior only when no probe is
attached, and when the external attenuation factor is 1.0.
Group
Vertical
Syntax
CH<x>:OFFSet <NR3>
CH<x>:OFFSet?
Related Commands
CH<x>:POSition
Arguments
<NR3> is a floating point number that specifies the offset value for the specified
channel <x>.
Examples
CH3:OFFSet 2.0E-3 sets the offset for channel 3 to 2 mV.
CH4:OFFSet? might return :CH4 :OFFSET 1.00 00E-03 indicating that the
offset for channel 4 is set to 1 mV.
CH<x>:POSition
This co
mmand specifies the vertical position of channel <x>, where x is the
channel number (1–4). The position value is applied to the signal before it is
digitized.
Increasing the position value of a waveform causes the waveform to move up.
Decreasing the position value causes the waveform to move down. The position
value determines the vertical graticule coordinate at which input signal values,
minus the present offset setting for that channel, are displayed. For example,
2-224 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual
Commands Listed in Alphabetical Order
if the position
for Channel 3 is set to 2.0 and the offset is set to 3.0, then input
signals equal to 3.0 units are displayed 2.0 divisions above the center of the screen
(at 1 V/div).
Group
Vertical
Syntax
CH<x>:POSition <NR3>
CH<x>:POSition?
Related Commands
CH<x>:OFFSet, REF<x>:VERTical:POSition, MATH[1]:VERTical:POSition
Arguments
<NR3> is a floating point number that specifies the position value for channel <x>,
in divisions, from the center graticule. The range is 8 to -8 divisions.
Examples
CH2:POSition 1.3 positions the Channel 2 input signal 1.3 divisions above the
center graticule.
CH1:POSition? might return : CH1:POSITION -1.3000 indicating that the
current position of Channel 1 is 1.3 divisions below the center graticule.
CH<x>:PRObe? (Query Only)
Returns all information concerning the probe attached to channel <x>, where x
is the channel number.
Group
Vertical
Syntax
CH<x>:PRObe?
CH<x>:PRObe:AUTOZero (No Query Form)
This command executes the attached probe’s Auto Zero function, for probes that
support this feature. See your probe documentation for more details.
Group
Vertical
Syntax
CH<x>:PRObe:AUTOZero EXECute
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-225
Commands Listed in Alphabetical Order
Examples
EXECute perfor
ms the AutoZero function in the probe.
CH<x>:PRObe:CALibrate (No Query Form)
This command executes a calibration or initialization for the probe attached to
channel 1–4,
if the probe is calibratable. To determine whether the probe is
calibratable, use CH<x>:PRObe:CALibrate:CALIBRATABLe?. The channel is
specified by x, which can range from 1 through 4.
Group
Vertical
Syntax
CH<x>:PRObe:CALibrate {EXECute|INITialize}
Related Commands
CH<x>:PRObe:CALibrate:CALIBRATABLe?
CH<x>:PRObe:CALibrate:STATE?
Arguments
EXECute — executes a calibration for the attached probe.
INITialize — initializes the attached probe.
Examples
CH2:PRObe:CALibrate execute executes a calibration for the attached probe.
0
CH<x>:PRObe:CALibrate:CALIBRATABLe? (Query Only)
This query returns the state of the probe attached to channel 1–4, either 0 ifthe
probe is not calibratable, or 1 if the probe is calibratable. The channel is specified
by x, which can range from 1 through 4.
Group
Vertical
Syntax
CH<x>:PRObe:CALibrate:CALIBRATABLe?
Related Commands
CH<x>:PRObe:CALibrate
CH<x>:PRObe:CALibrate:STATE?
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