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en:python-ivi:readme [2013/02/17 21:07] alex |
en:python-ivi:readme [2013/06/23 08:19] alex [Instrument communication] |
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| ===== Included drivers ===== | ===== Included drivers ===== | ||
| + | * Oscilloscopes (scope) | ||
| + | * Agilent InfiniiVision 7000A/B series | ||
| + | * Agilent Infiniium 90000A/90000X series | ||
| + | * Function Generators (fgen) | ||
| + | * Tektronix AWG2000 series | ||
| * DC Power Supplies (dcpwr) | * DC Power Supplies (dcpwr) | ||
| * Tektronix PS2520G/PS2521G | * Tektronix PS2520G/PS2521G | ||
| * Agilent E3600A series | * Agilent E3600A series | ||
| - | * Function Generators (fgen) | ||
| - | * Tektronix AWG2000 series | ||
| * RF Power Meters (pwrmeter): | * RF Power Meters (pwrmeter): | ||
| * Agilent 436A | * Agilent 436A | ||
| * RF Signal Generators (rfsiggen) | * RF Signal Generators (rfsiggen) | ||
| * Agilent 8642 A/B | * Agilent 8642 A/B | ||
| - | * Oscilloscopes (scope) | ||
| - | * Agilent InfiniiVision 7000A series | ||
| ===== Instrument communication ===== | ===== Instrument communication ===== | ||
| - | Python IVI can use Python VXI-11, pySerial and linux-gpib to connect to instruments. The implementation of the initialize method takes a VISA resource string and attempts to connect to an instrument. If the resource string starts with TCPIP, then Python IVI will attempt to use Python VXI-11. If it starts with GPIB, it will attempt to use linux-gpib's python interface. If it starts with ASRL, it attemps to use pySerial. Integration with PyVISA is planned, but not currently supported. | + | Python IVI can use Python VXI-11, Python USBTMC, pySerial and linux-gpib to connect to instruments. The implementation of the initialize method takes a VISA resource string and attempts to connect to an instrument. If the resource string starts with TCPIP, then Python IVI will attempt to use Python VXI-11. If it starts with USB, it attempts to use Python USBTMC. If it starts with GPIB, it will attempt to use linux-gpib's python interface. If it starts with ASRL, it attemps to use pySerial. Integration with PyVISA is planned, but not currently supported. |
| ===== A note on standards compliance ===== | ===== A note on standards compliance ===== | ||
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| # read out channel 1 waveform data | # read out channel 1 waveform data | ||
| waveform = mso.channels[0].measurement.fetch_waveform() | waveform = mso.channels[0].measurement.fetch_waveform() | ||
| + | # measure peak-to-peak voltage | ||
| + | vpp = mso.channels[0].measurement.fetch_waveform_measurement("voltage_peak_to_peak") | ||
| + | # measure phase | ||
| + | phase = mso.channels['channel1'].measurement.fetch_waveform_measurement("phase", "channel2") | ||
| </code> | </code> | ||
| Line 108: | Line 113: | ||
| #psu = ivi.agilent.agilentE3649A("ASRL::/dev/ttyUSB0,9600::INSTR") | #psu = ivi.agilent.agilentE3649A("ASRL::/dev/ttyUSB0,9600::INSTR") | ||
| # configure output | # configure output | ||
| + | psu.outputs[0].configure_range('voltage', 12) | ||
| psu.outputs[0].voltage_level = 12.0 | psu.outputs[0].voltage_level = 12.0 | ||
| psu.outputs[0].current_limit = 1.0 | psu.outputs[0].current_limit = 1.0 | ||