Lantz Signal Generator
| 15 | |
| 16 | |
| 17 | class LantzSignalGenerator(MessageBasedDriver): |
| 18 | """Lantz Signal Generator |
| 19 | """ |
| 20 | |
| 21 | DEFAULTS = {'COMMON': {'write_termination': '\n', |
| 22 | 'read_termination': '\n'}} |
| 23 | |
| 24 | |
| 25 | def query(self, command, *, send_args=(None, None), recv_args=(None, None)): |
| 26 | answer = super().query(command, send_args=send_args, recv_args=recv_args) |
| 27 | if answer == 'ERROR': |
| 28 | raise InstrumentError |
| 29 | return answer |
| 30 | |
| 31 | @Feat(read_once=True) |
| 32 | def idn(self): |
| 33 | return self.query('?IDN') |
| 34 | |
| 35 | @Feat(units='V', limits=(10,)) |
| 36 | def amplitude(self): |
| 37 | """Amplitude. |
| 38 | """ |
| 39 | return float(self.query('?AMP')) |
| 40 | |
| 41 | @amplitude.setter |
| 42 | def amplitude(self, value): |
| 43 | self.query('!AMP {:.1f}'.format(value)) |
| 44 | |
| 45 | @Feat(units='V', limits=(-5, 5, .01)) |
| 46 | def offset(self): |
| 47 | """Offset. |
| 48 | """ |
| 49 | return float(self.query('?OFF')) |
| 50 | |
| 51 | @offset.setter |
| 52 | def offset(self, value): |
| 53 | self.query('!OFF {:.1f}'.format(value)) |
| 54 | |
| 55 | @Feat(units='Hz', limits=(1, 1e+5)) |
| 56 | def frequency(self): |
| 57 | """Frequency. |
| 58 | """ |
| 59 | return float(self.query('?FRE')) |
| 60 | |
| 61 | @frequency.setter |
| 62 | def frequency(self, value): |
| 63 | self.query('!FRE {:.2f}'.format(value)) |
| 64 | |
| 65 | @Feat(values={True: 1, False: 0}) |
| 66 | def output_enabled(self): |
| 67 | """Analog output enabled. |
| 68 | """ |
| 69 | return int(self.query('?OUT')) |
| 70 | |
| 71 | @output_enabled.setter |
| 72 | def output_enabled(self, value): |
| 73 | self.query('!OUT {}'.format(value)) |
| 74 |