def METHOD_NAME(self):
    dprint("connectMaster( " + self.host + " )")
    self.acq = self._connect()
    self.acq.p.expect('MasterInterpreter')
    self.acq.p.sendline('dt100 open master 1')
    i = self.acq.p.expect("DT100:\r", timeout=60)
    if i == 0:
        dprint("OK")
    else:
        print("Timeout")