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FMC TDC 1ns 5cha
Commit a17498f6 authored by Federico Vaga's avatar Federico Vaga
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tst: improve SCPI interface 

Signed-off-by: Federico Vaga's avatarFederico Vaga <federico.vaga@cern.ch>
parent ee464348
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Showing with 19 additions and 13 deletions
pytest/conftest.py
View file @ a17498f6
......@@ -26,40 +26,46 @@ class SCPI(PulseGenerator):
import pyvisa
self.mgr = pyvisa.ResourceManager()
self.instr = self.mgr.open_resource(self.id)
self.instr.query_delay=10
self.instr.query_delay=0
self.instr.timeout = 10000
self.instr.read_termination = '\n'
self.instr.write_termination = '\n'
self.instr.write("*RST")
self.wait_completion()
self.instr.query_ascii_values("*OPC?")
self.instr.write("*CLS")
self.instr.write("INITIATE:CONTINUOUS OFF")
self.instr.write("OUTPUT:STATE OFF")
def wait_completion(self):
if int(self.instr.query_ascii_values("*OPC?")[0]) != 1:
raise Exception("Failed to reset the waveform generator")
def disable(self, ch):
self.instr.write("OUTPUT:STATE OFF")
def generate_pulse(self, ch, rel_time_us,
period_ns, count, sync):
import pdb; pdb.set_trace()
self.instr.write("OUTPUT:STATE OFF")
self.instr.write("SOURCE:VOLTAGE:LEVEL:IMMEDIATE:AMPLITUDE 5.0V")
# START Custom Agilent 33600A commands
self.instr.write("SOURCE:BURST:STATE OFF")
# END Custom Agilent 33600A commands
self.instr.write("SOURCE:VOLTAGE:LEVEL:IMMEDIATE:AMPLITUDE 2.5V")
self.instr.write("SOURCE:VOLTAGE:LEVEL:IMMEDIATE:OFFSET 1.25V")
self.instr.write("SOURCE:FUNCTION:SHAPE PULSE")
self.instr.write("SOURCE:PULSE:WIDTH 100ns")
self.instr.write("SOURCE:PULSE:PERIOD {:d}ns".format(period_ns))
# START Custom Agilent 33600A commands
self.instr.write("SOURCE:BURST:STATE ON")
self.instr.write("TRIGGER:DELAY {:d}e-6".format(rel_time_us))
burst_period_ns = int(count/(1/period_ns)) + 500
self.instr.write("SOURCE:BURST:INTERNAL:PERIOD {:d}ns".format(burst_period_ns))
self.instr.write("SOURCE:BURST:NCYCLES {:d}".format(count))
# self.instr.write("TRIGGER:DELAY {:d}us".format(rel_time_us))
self.instr.write("SOURCE:BURST:STATE ON")
# END Custom Agilent 33600A commands
self.instr.write("OUTPUT:STATE ON")
self.wait_completion()
self.instr.query_ascii_values("*OPC?")
self.instr.write("INITIATE:IMMEDIATE")
if sync:
self.wait_completion()
self.instr.query_ascii_values("*OPC?")
class FmcFineDelay(PulseGenerator):
CHANNEL_NUMBER = 4
......
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