MDO3000 Programmer Manual.pdf - 第170页

Commands Listed in A lphabetical Order AFG:PERIod Sets (or queries) the period of the AFG waveform, in seconds. (Period = 1.0/Freque ncy). The period value is constrained by the frequency max/min/resolution (see AFG:FREQ…

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Commands Listed in Alphabetical Order
Examples
AFG:OFFSET 1.0
sets the AFG offset to 1.0 volts.
AFG:OUTPut:LOAd:IMPEDance
Sets (or queries) the AFG output load impedance.
Conditions
MDO3000 series with option MDO3AFG installed and MDO4000C series with
option MDO4AFG installed only.
Group
AFG
Syntax
AFG:OUTPut:LOAd:IMPEDance {FIFty|HIGHZ}
AFG:OUTPut:LOAd:IMPEDance?
Arguments
FIFty sets the output load impedance to 50 Ohms.
HIGHZ sets the output load impedance to the high-impedance state.
Examples
AFG:OUTP:LOA:IMPED FIF sets the AFG output load impedance to 50 Ohms.
AFG:OUTPut:STATE
Sets (or queries) the AFG output state.
Conditions
MDO3000 series with option MDO3AFG installed and MDO4000C series with
option MDO4AFG installed only.
Group
AFG
Syntax
AFG:OUTPut:STATE {0|1|OFF|ON}
AFG:OUTPut:STATE?
Arguments
1 orON turns on the AFG output state.
0 or OFF turns it off.
Examples
AFG:OUTPUT:STATE ON turns on the AFG output state.
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-139
Commands Listed in Alphabetical Order
AFG:PERIod
Sets (or queries) the period of the AFG waveform, in seconds. (Period =
1.0/Frequency).
The period value is constrained by the frequency max/min/resolution (see
AFG:FREQuency). For example, frequency resolution steps from 0.1Hz to 1Hz,
result in th
e following valid settings for period: 10, 5, 3.33…, 2.5, 2, 1.66…,
1.428571…, 1.25, 1.11…, 1.0.
Conditions
MDO3000 series with option MDO3AFG installed and MDO4000C series with
option MDO4AFG installed only.
Group
AFG
Syntax
AFG:PERIod <NR3>
AFG:PERIod?
Arguments
Floating point number that represents the AFG period value, in seconds.
Returns
The query response is returned in high precision NR3 format (up to 12 digits with
more than 4 trailing 0 digits after the decimal point is omitted).
Examples
AFG:PERIOD 1 sets the AFG period value to 1 second.
AFG:PHASe
Sets (or queries) the AFG phase. The AFG phase setting controls the phase
difference between the trigger signal output and the AFG waveform output.
Phase is expressed in degrees and ranges from -180.0 to 180.0 in increments of
0.1 degrees.
Conditions
MDO3000 series with option MDO3AFG installed and MDO4000C series with
option MDO4AFG installed only.
Group
AFG
Syntax
AFG:PHASe <NR3>
AFG:PHASe?
2-140 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual
Commands Listed in Alphabetical Order
Arguments
Floating point
number that represents the AFG phase, in degrees.
Examples
AFG:PHASE -145.0 sets the phase of the AFG to -145.0 degrees.
AFG:PULse:WIDth
Sets (or queries) the AFG pulse width, in seconds.
Pulse width has an absolute minimum of 10ns and has a relative range of 10% -
90% of the current period setting. Resolution is 0.1ns.
Conditions
MDO3000 series with option MDO3AFG installed and MDO4000C series with
option MDO4AFG installed only.
Group
AFG
Syntax
AFG:PULse:WIDth <NR3>
AFG:PULse:WIDth?
Arguments
Floating point number that represents the pulse width, in seconds.
Examples
AFG:PULSE:WIDTH 100.0E-6 sets the AFG pulse width to 100 microseconds.
AFG:RAMP:SYMmetry
Sets (or queries) the AFG ramp symmetry as a percentage. Minimum is 0.0%,
maximum is 100.0% and increment is 0.10%.
Conditions
MDO3000 series with option MDO3AFG installed and MDO4000C series with
option MDO4AFG installed only.
Group
AFG
Syntax
AFG:RAMP:SYMmetry <NR3>
AFG:RAMP:SYMmetry?
Arguments
Floating point number that represents the AFG ramp symmetry, as a percentage.
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-141