SRS-CG635 Synthesized Clock Generator Interface¶

Interface with a Stanford Research Systems CG635 Synthesized Clock Generator.

Installation¶

$ pip install cg635-clock-generator

Supported Features¶

Frequency control
Phase control
CMOS output levels and standards control
Q/*Q outputs levels and standards control
R232 communication

Usage¶

from cg635_clock_generator import CG635ClockGenerator, CG635Communication

clock_generator = CG635ClockGenerator(
        communication_type=CG635Communication.RS232,
        serial_device='/dev/ttyUSB0',
)

print(clock_generator.get_identification())

FREQ = 10e6
PHASE = 90.0

clock_generator.set_frequency(FREQ)

frequency = clock_generator.get_frequency()
print(f"Frequency is {frequency} Hz")

clock_generator.set_phase(PHASE)

phase = clock_generator.get_phase()
print(f"Phase is {phase} degrees")

Running tests on hardware¶

During normal development and for the CI the unit test suite is executed on a mock device using pyvisa-mock. It is also possible to run tests on real hardware connected to your system. Just set the hil flag when running tox

$ tox -- --hil

By default it will try to connect to /dev/ttyUSB0, but you can specify a different device using the --hil_serial_device option:

$ tox -- --hil --hil_serial_device /dev/ttyUSB1

Status¶

Currently only the RS232 communication has been tested on the device.

Documentation¶

For more details of the module API, check the online documentation.

Feeling like contributing?¶

Great! Check the Contributing Guide to get started.