def test_source_power_cal(self, data):
reads = data['reads']
ch = data['channel']
port = data['port']
sweeps = data['sweeps']
tolerance = data['tolerance']
vna = Vna()
vna.bus = FifoBus(reads)
vna.channel(ch).source_power_cal(port, sweeps, tolerance)
for write in data['writes']:
if 'position' in write:
pos = write['position']
self.assertEqual(write['command'], vna.bus.writes[pos])
else:
self.assertIn (write['command'], vna.bus.writes)
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)
from pathlib import Path from power_deembed import read_s21 from rohdeschwarz.instruments.vna import Vna # patch rohdeschwarz vna import power_deembed.patch.vna.channel.power_cal root_path = Path(__file__).parent filename = str(root_path / 'test' / 'fixtures' / '3 dB attenuator.s2p') channel = 1 wave = 'b1' vna = Vna() vna.open_tcp() # offsets ch = vna.channel(channel) freq_Hz, offsets_dB = read_s21(filename) assert not False in freq_Hz == ch.cal_freq_Hz # interpolate # offsets_dB = np.interp(ch.cal_freq_Hz, freq_Hz, offsets_dB) # deembed, apply power_cal_dB = ch.get_power_cal(wave) - offsets_dB ch.set_power_cal(power_cal_dB)
from rohdeschwarz.instruments.vna import Vna
# Connect
vna = Vna()
vna.open_tcp('127.0.0.1')
# Calibrate channel 1 ports 1, 2
# using automatic cal unit
index = 1
ports = [1, 2]
vna.channel(index).auto_calibrate(ports)
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()
trc2 = vna.trace(name)
trc2.parameter = 'S21'
trc2.diagram = index
# save
# 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')
s21_trace.parameter = 'S21'
# Setup Trc2: a1(P1)
vna.create_trace(channel=1, name='Trc2', parameter="a1(P1)")
a1_trace = vna.trace('Trc2')