MDO3000 Programmer Manual.pdf - 第171页
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) t …
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
Commands Listed in Alphabetical Order
Examples
AFG:RAMP:SYMM
ETRY 50.0
sets the AFG ramp symmetry to 50 percent.
AFG:SQUare:DUty
Sets (or queries) the AFG duty cycle, as a percentage. The minimum is 10.0%,
maximum is 90
.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:SQUare:DUty <NR3>
AFG:SQUare:DUty?
Arguments
Floating point number that represents the AFG duty cycle, as a percentage.
Examples
AFG:SQUARE:DUTY 50.0 sets the AFG duty cycle to 50 percent.
ALIas:CATalog? (Query Only)
Returns a list of the currently defined alias labels, separated by commas. Ifno
aliases are defined, the query returns the string "".
Group
Alias
Syntax
ALIas:CATalog?
Examples
ALIAS:CATALOG? might return the string :ALIAS:CATALOG
"SETUP1","TESTMENU1","DEFAULT"
showing that there are three aliases
named SETUP1, TESTMENU1, and DEFAULT.
ALIas:DEFine
Assigns a sequence of program messages to an alias label. These messages are
then substituted for the alias whenever it is received as a command or query,
provided that ALIas:STATE has been turned on. The query form of this command
returns the definitions of a selected alias.
2-142 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual