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('--timeout', default=5000, type=int, help='default instrument timeout (ms)') parser.add_argument('--log', default='', help='SCPI command log filename') args = parser.parse_args() vna = Vna() try: if args.visa: vna.open(args.visa, args.address) else: vna.open_tcp(args.address) if args.timeout: vna.timeout_ms = args.timeout if vna.connected(): print("connected: {0}".format(vna.id_string())) if args.log: vna.open_log(args.log) vna.log.write('{0}\n'.format(datetime.datetime.now())) vna.log.write('--------------------------\n\n') vna.print_info() sys.path.insert(0, os.getcwd()) code.interact('', local=locals()) sys.exit(0) else: raise Exception('Could not connect to instrument') except SystemExit: pass except: print('Error connecting to instrument\n') parser.print_help() finally: if vna.log: vna.close_log() if vna.connected(): vna.close()
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('--log', default='', help='SCPI command log filename') args = parser.parse_args() vna = Vna() try: if args.visa: vna.open(args.visa, args.address) else: vna.open_tcp(args.address) if vna.connected(): print("connected: {0}".format(vna.id_string())) if args.log: vna.open_log(args.log) vna.log.write('{0}\n'.format(datetime.datetime.now())) vna.log.write('--------------------------\n\n') vna.print_info() code.interact('', local=locals()) else: print('Could not connect to instrument\n') parser.print_help() except SystemExit: pass except: print('Error connecting to instrument\n') parser.print_help() finally: if vna.log: vna.close_log() if vna.connected(): vna.close()
def connect_to_vna(self, address): self.disconnect_from_vna() try: vna = Vna() vna.open_tcp(address) if not vna.connected(): raise self.command_error(f"cannot connect to '{address}'") except (error, herror, gaierror, timeout): raise self.command_error( f"socket error while connecting to '{address}'") except ConnectionError: raise self.command_error( f"connection error while connecting to '{address}'.") self.vna = vna
def connect_to_vna(address): vna = Vna() try: vna.open_tcp(address) except: print("\n\n* Error!\n* Problem connecting to VNA at ip {0}".format(address)) return None try: if not vna.connected(): print("\n\n* Error!\n* Problem connecting to VNA at ip {0}".format(address)) return None if not vna.properties.is_known_model(): print("\n\n* Error!\n* Could not find R&S VNA at ip {0}".format(address)) print("* *IDN? response: {0}".format(vna.id_string())) return None; except: print("\n\n* Error!\n* Problem connecting to VNA at ip {0}".format(address)) return None # set long timeout, vna.timeout_ms = 60000 return vna
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()