MDO3000 Programmer Manual.pdf - 第169页

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 in…

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Commands Listed in Alphabetical Order
AFG:OFFSet
Sets (or queries) the AFG offset value, in volts. The offset values that can be
specified for each function and load impedance are in the table below. (To
specify the f
unction and load impedance, use the commands AFG:FUNCtion
and AFG:OUTPut:LOAd:IMPEDance.)
NOTE. The AFG:OUTPut:LOAd:IMPEDance command must be used before
using any of the amplitude/offset/highLevel/lowLevel/Preset commands, so that
saved setups are recalled with the proper load factor applied.
AFG:OFFSet Setting Value
Load Impedance
FIFTY Oh
m
Load Impedance
HIGHZ
Min Max Resolution Min Max Resolution
SINE
SQUare
PULSe
RAMP
NOISe
DC
SINC (
Sin(x)/x)
GAUSsian
LORENtz
ERIS
e
EDECAy
HAVERSINe
CARD
Iac
ARBitrary
-1.25V 1.25V 500uV -2.5V 2.5V 1mV
Conditions
MDO3000 series with option MDO3AFG installed and MDO4000C series with
option MDO4AFG installed only.
Group
AFG
Syntax
AFG:OFFSet <NR3>
AFG:OFFSet?
Arguments
Floating point number that represents the AFG offset, in volts.
2-138 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual
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