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add details about suservo, urukul, sampler

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Sebastien Bourdeauducq 2019-04-24 12:27:03 +08:00
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<h2>Urukul DDS card</h2> <h2>Urukul DDS card</h2>
<p>Urukul is a 4 channel DDS-based frequency synthesizer for the EEM form factor. It provides sub-Hz frequency resolution, controlled phase steps, and accurate output amplitude control. We offer it in two variants, with either the AD9910 or the AD9912 chip.</p> <p>Urukul is a 4 channel DDS-based frequency synthesizer for the EEM form factor. It provides sub-Hz frequency resolution, controlled phase steps, and accurate output amplitude control. We offer it in two variants, with either the AD9910 or the AD9912 chip.</p>
<p>With the SU-Servo feature of ARTIQ, the AD9910 variant of Urukul (which has fine amplitude control) can be used in combination with the Sampler ADC to form a laser intensity servo. In this application, the Urukul card drives AOMs and photodiodes are connected to Sampler to monitor laser intensities. When ordering your system, specify that you want SU-Servo integrated into the gateware.</p>
<p>In regular mode, various DDS features are supported, including frequency, phase and amplitude control, and AD9910 RAM mode. See the ARTIQ manual for more details.</p>
<p><a href="https://github.com/sinara-hw/Urukul/wiki">More information</a></p> <p><a href="https://github.com/sinara-hw/Urukul/wiki">More information</a></p>
<p><center><img src="urukul.jpg" width="600"></center></p> <p><center><img src="urukul.jpg" width="600"></center></p>
@ -55,6 +59,8 @@
<h2>Sampler ADC card</h2> <h2>Sampler ADC card</h2>
<p>Sampler is an 8-channel, 16-bit ADC EEM with an update rate of up to 1.5MSPS (all channels simultaneously). It has low-noise differential front end with a digitally programmable gain, providing full-scale input ranges between +-10mV (G=1000) and +-10V (G=1).</p> <p>Sampler is an 8-channel, 16-bit ADC EEM with an update rate of up to 1.5MSPS (all channels simultaneously). It has low-noise differential front end with a digitally programmable gain, providing full-scale input ranges between +-10mV (G=1000) and +-10V (G=1).</p>
<p>In SU-Servo mode, Sampler can be used in combination with Urukul to form a laser intensity servo. Otherwise, in regular mode, single sample values can be read out by ARTIQ kernels (due to CPU overhead, the actual sample rate in regular mode is reduced).</p>
<p><a href="https://github.com/sinara-hw/Sampler/wiki">More information</a></p> <p><a href="https://github.com/sinara-hw/Sampler/wiki">More information</a></p>
<p><center><img src="sampler.jpg" width="600"></center></p> <p><center><img src="sampler.jpg" width="600"></center></p>