import pyvisa as visa
#
Change this variable to the address of your instrument
VISA_ADDRESS
= 'TCPIP0::localhost::inst0::INSTR'
#
Create a connection (session) to the instrument
resourceManager
= visa.ResourceManager()
session = resourceManager.open_resource(VISA_ADDRESS)
session.timeout
= 25000
#
Command to preset the instrument and deletes the default trace,
measurement, and window
session.write("SYST:FPR")
#
Create and turn on window 1
session.write("DISP:WIND1:STAT
ON")
#
======================== Set up 4 S-Parameters ========================
#
Create a S11 measurement
session.write("CALC1:MEAS1:DEF
'S11'")
#
Displays measurement 1 in window 1 and assigns the next available
trace number to the measurement
session.write("DISP:MEAS1:FEED
1")
#
Create a S21 measurement
session.write("CALC1:MEAS2:DEF
'S21'")
#
Displays measurement 2 in window 1 and assigns the next available
trace number to the measurement
session.write("DISP:MEAS2:FEED
1")
#
Create a S12 measurement
session.write("CALC1:MEAS3:DEF
'S12'")
#
Displays measurement 3 in window 1 and assigns the next available
trace number to the measurement
session.write("DISP:MEAS3:FEED
1")
#
Create a S22 measurement
session.write("CALC1:MEAS4:DEF
'S22'")
#
Displays measurement 4 in window 1 and assigns the next available
trace number to the measurement
session.write("DISP:MEAS4:FEED
1")
#
======================== Set start and stop ========================
session.write("SENS1:FREQ:START
1e9")
session.write("SENS1:FREQ:STOP
2e9")
#
======================== Change the number of points ========================
session.write("SENS1:SWE:POIN
51")
#
======================== Set IFBW ========================
#
Set IF Bandwidth to 700 Hz
session.write("SENS1:BAND
700")
#
======================== Take a sweep and read back data ========================
#
Perfoms a single sweep
session.write("SENS1:SWE:MODE
SING")
opcCode = session.query("*OPC?")
results1
= session.query_ascii_values("CALC1:MEAS1:DATA:FDATA?")
results2 = session.query_ascii_values("CALC1:MEAS2:DATA:FDATA?")
results3 = session.query_ascii_values("CALC1:MEAS3:DATA:FDATA?")
results4 = session.query_ascii_values("CALC1:MEAS4:DATA:FDATA?")
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