forked from M-Labs/artiq
tester: tweak suservo
* p gain 1 to get reasonable power * refine testing instructions and comments
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@ -96,7 +96,8 @@ class SinaraTester(EnvExperiment):
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self.suschannels[name] = self.get_device(name)
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# Remove Urukul, Sampler, Zotino and Mirny control signals
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# from TTL outs (tested separately) and remove SUServo Urukuls
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# from TTL outs (tested separately) and remove Urukuls covered by
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# SUServo
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ddb = self.get_device_db()
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for name, desc in ddb.items():
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if isinstance(desc, dict) and desc["type"] == "local":
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@ -116,7 +117,6 @@ class SinaraTester(EnvExperiment):
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del self.urukul_cplds[desc["arguments"]["cpld0_device"]]
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if "dds1_device" in desc["arguments"]:
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del self.urukuls[desc["arguments"]["dds1_device"]]
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if "cpld1_device" in desc["arguments"]:
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del self.urukul_cplds[desc["arguments"]["cpld1_device"]]
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elif (module, cls) == ("artiq.coredevice.sampler", "Sampler"):
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cnv_device = desc["arguments"]["cnv_device"]
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@ -600,20 +600,19 @@ class SinaraTester(EnvExperiment):
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channel.set_iir(
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profile=loop_nr,
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adc=loop_nr, # take data from Sampler channel
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kp=-.1, # -0.1 P gain
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ki=0./s, # low integrator gain
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g=0., # no integrator gain limit
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delay=0. # no IIR update delay after enabling
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kp=-1., # -1 P gain
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ki=0./s, # no integrator gain
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g=0., # no integrator gain limit
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delay=0. # no IIR update delay after enabling
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)
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# setpoint 0.5 (5 V with above PGIA gain setting)
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# 0 phase
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delay(100*us)
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channel.set_dds(
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profile=loop_nr,
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offset=-.3, # 3 V with above PGIA settings
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frequency=10*MHz,
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phase=0.)
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# enable RF, IIR updates and profile 0
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# enable RF, IIR updates and set profile
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delay(10*us)
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channel.set(en_out=1, en_iir=1, profile=loop_nr)
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@ -622,27 +621,33 @@ class SinaraTester(EnvExperiment):
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self.core.break_realtime()
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channel.set_config(enable=1)
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delay(10*us)
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# check servo enabled
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assert channel.get_status() & 0x01 == 1
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delay(10*us)
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def test_suservos(self):
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print("*** Testing SUServos.")
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print("Initializing...")
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for card_n, (card_name, card_dev) in enumerate(self.suservos):
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print(card_name + "...")
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print("Initializing modules...")
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for card_name, card_dev in self.suservos:
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print(card_name)
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self.setup_suservo(card_dev)
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print("Setup SUServo loops.")
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print("Urukul0 channels corresponds to Sampler channels 0-3 and Urukul1 channels correspont to Sampler channels 4-7.")
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print("Only proportional gain and offset such that 1.5V on the input gives 6dB less output power than at 0V input. (open loop)")
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print("Frequency: 10MHz. Output power at 0V input: ~-29dBm")
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for card_n, channels in enumerate(chunker(self.suschannels, 8)):
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for channel_n, (channel_name, channel_dev) in enumerate(channels):
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self.setup_suservo_loop(channel_dev, channel_n)
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print("...done")
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print("Setting up SUServo channels...")
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for channels in chunker(self.suschannels, 8):
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for i, (channel_name, channel_dev) in enumerate(channels):
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print(channel_name)
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self.setup_suservo_loop(channel_dev, i)
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print("...done")
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print("Enabling...")
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for card_n, (card_name, card_dev) in enumerate(self.suservos):
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for card_name, card_dev in enumerate(self.suservos):
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print(card_name)
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self.setup_start_suservo(card_dev)
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print("...done")
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print("Each Sampler channel applies proportional amplitude control")
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print("on the respective Urukul0 (ADC 0-3) and Urukul1 (ADC 4-7, if")
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print("present) channels.")
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print("Frequency: 10 MHz, output power: about -9 dBm at 0 V and about -15 dBm at 1.5 V")
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print("Verify frequency and power behavior.")
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print("Press ENTER when done.")
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input()
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