Python Vna.preset Examples

Example #1

File: test_vnachannel.py Project: yadnyeshb/rohdeschwarz

 def test_save_measurement_locally(self):
     vna = Vna()
     vna.open_tcp('rsa22471.local')
     vna.preset()
     ports = [1, 2]
     ch = vna.channel()
     try:
         success = ch.save_measurement_locally('test', ports)
     except:
         print(sys.exc_info()[0])
         print(vna.errors)
         raise
     if not success:
         print(vna.errors)
         vna.clear_status()
     self.assertTrue(success)

Example #2

# create Vna instance
vna = Vna()

# log
vna.open_log(log_file)
vna.print_info()

# connect to instrument (no visa)
vna.open_tcp(address)

# alternatively, using pyvisa:
# vna.open('gpib', 20)

# preset and clear errors
vna.clear_status()
vna.preset()
vna.pause()

# create an interesting setup
# to save
ch1 = vna.channel(1)
ch1.start_frequency_Hz = 1.0e9
ch1.stop_frequency_Hz  = 2.0e9
ch1.points             = 401

trc1 = vna.trace('Trc1')
trc1.parameter = 'S11'

index = vna.create_diagram()

name = vna.create_trace()

Example #3

File: example.py Project: Terrabits/measure_with_a1

from rohdeschwarz.instruments.vna import Vna
from rohdeschwarz.instruments.vna import SweepType
import matplotlib.pyplot as plt
import numpy             as np

# Open instrument connection
vna = Vna()
vna.open('TCPIP', '127.0.0.1')

# SCPI command log
vna.open_log("SCPI Command Log.txt")
print_header(vna.log, "Measure with a1", "0.0.1")
vna.print_info()

# Preset
vna.preset()
vna.pause()
vna.clear_status()

# Setup channel 1
ch1                 = vna.channel(1)
ch1.sweep_type      = SweepType.power
ch1.start_power_dBm = -20.0
ch1.stop_power_dBm  = 0
ch1.points          = 201
ch1.if_bw_Hz        = 1, 'kilo'
ch1.cal_group       = 'example'
ch1.manual_sweep    = True

# Setup Trc1: S21
s21_trace           = vna.trace('Trc1')