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suservo: add documentation on settings and setup 

close #1015
This commit is contained in:
Robert Jördens 2018-05-31 16:21:09 +00:00
parent 9b5a46dffd
commit e1b0fcc24e
1 changed files with 21 additions and 1 deletions
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artiq/coredevice/suservo.py
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@ -16,7 +16,27 @@ COEFF_SHIFT = 11
class SUServo: class SUServo:
"""Sampler-Urukul Servo configuration device. """Sampler-Urukul Servo parent and configuration device.
Sampler-Urukul Servo is a integrated device controlling one
8-channel ADC (Sampler) and two 4-channel DDS (Urukuls) with a DSP engine
connecting the ADC data and the DDS output amplitudes to enable
feedback. SUServo can for example be used to implement intensity
stabilization of laser beams with an AOM and a photodetector.
Additionally SUServo supports multiple preconfigured profiles per channel
and features like automatic integrator hold.
Notes:
* See the SUServo variant of the Kasli target for an example of how to
connect the gateware and the devices. Sampler and each Urukul need
two EEM connections.
* Ensure that both Urukuls are AD9910 variants and have the on-board
dip switches set to 1100 (first two on, last two off).
* Refer to the Sampler and Urukul documentation and the SUServo
example device database for runtime configuration of the devices
(PLLs, gains, clock routing etc.)
:param channel: RTIO channel number :param channel: RTIO channel number
:param pgia_device: Name of the Sampler PGIA gain setting SPI bus :param pgia_device: Name of the Sampler PGIA gain setting SPI bus