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()