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 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('--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()