def setUp(self):
vna = Vna()
vna.open_tcp()
vna.clear_status()
vna.manual_sweep = True
timeout_ms = 2 * vna.sweep_time_ms + 5000
vna.start_sweeps()
vna.pause(timeout_ms)
self.vna = vna
def setUp(self):
self.serial_no = "123"
self.settings = default_settings.copy()
path = get_root_path() / "test_measure"
self.settings['save']['directory'] = path
vna = Vna()
vna.open_tcp()
vna.clear_status()
self.vna = vna
def setUp(self):
root_path = get_root_path() / "test_diagram"
serial_no = "123"
by_serial_no = True
self.path = SavePath(root_path, serial_no, by_serial_no)
vna = Vna()
vna.open_tcp()
vna.clear_status()
vna.manual_sweep = True
timeout_ms = 2 * vna.sweep_time_ms + 5000
vna.start_sweeps()
vna.pause(timeout_ms)
self.vna = vna
self.settings = default_settings.copy()
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)
def setUp(self):
source_root = os.path.dirname(os.path.realpath(__file__))
self.source_root = Path(source_root)
root_path = get_root_path() / "test_html"
serial_no = self.serial_no = "123"
by_serial_no = True
self.path = SavePath(root_path, serial_no, by_serial_no)
vna = Vna()
vna.open_tcp()
vna.clear_status()
vna.manual_sweep = True
timeout_ms = 2 * vna.sweep_time_ms + 5000
vna.start_sweeps()
vna.pause(timeout_ms)
self.vna = vna
self.settings = default_settings.copy()
# 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()
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')
s21_trace.parameter = 'S21'
def main():
parser = argparse.ArgumentParser(
description='Connect to a Rohde & Schwarz VNA')
parser.add_argument('--visa',
metavar='bus',
default=False,
help="use VISA with 'bus'")
parser.add_argument('--address',
default='127.0.0.1',
help='instrument address')
parser.add_argument('--port',
default=5025,
type=int,
help='port (TCP only)')
parser.add_argument('--timeout',
default=5000,
type=int,
help='default instrument timeout (ms)')
parser.add_argument('--log', help='SCPI command log filename')
parser.add_argument(
'--export-cal-data',
action='store_true',
help='Save corrections to numpy `savez` (*.pyz) data file')
parser.add_argument('--outer-channel',
type=int,
help='channel with outer corrections')
parser.add_argument('--outer-cal-group',
help='cal group containing outer corrections')
parser.add_argument('--inner-channel',
type=int,
help='channel with inner corrections')
parser.add_argument('--inner-cal-group',
help='cal group containing inner corrections')
parser.add_argument('--filename',
default='Port {port}.s2p',
help="default: 'Port {port}.s2p'")
parser.add_argument('ports',
type=int,
nargs='+',
help='VNA ports to extract DUTs from')
args = parser.parse_args()
if not args.inner_channel and not args.inner_cal_group:
print('error: must include inner source, either channel or cal group')
parser.print_help()
sys.exit(-1)
if not args.outer_channel and not args.outer_cal_group:
print('error: must include outer source, either channel or cal group')
parser.print_help()
sys.exit(-1)
vna = Vna()
try:
if args.visa:
vna.open(args.visa, args.address)
else:
vna.open_tcp(args.address, args.port)
if args.timeout:
vna.timeout_ms = args.timeout
if vna.connected():
if args.log:
vna.open_log(args.log)
print_header(vna.log, 'R&S S2P Extractor', '1.0')
vna.print_info()
else:
raise Exception('Could not connect to instrument')
if args.outer_channel:
outer_source = Source(Type.CHANNEL, args.outer_channel)
else:
outer_source = Source(Type.CAL_GROUP, args.outer_cal_group)
if args.inner_channel:
inner_source = Source(Type.CHANNEL, args.inner_channel)
else:
inner_source = Source(Type.CAL_GROUP, args.inner_cal_group)
print(f"ports: {args.ports}")
for port in args.ports:
filename = args.filename.format(port=port)
print(f' {filename}')
calculate(vna, outer_source, inner_source, port, filename,
args.export_cal_data)
except Exception as err:
parser.print_help()
raise
finally:
if vna.connected():
vna.errors
vna.clear_status()
if vna.log:
vna.close_log()
if vna.connected():
vna.close()