added files required for agilent_e8257d generator

2 files changed, 77 insertions, 0 deletions

diff --git a/qolab/hardware/rf_generator/__init__.py b/qolab/hardware/rf_generator/__init__.py
new file mode 100644
index 0000000..a82c1a0
--- /dev/null
+++ b/qolab/hardware/rf_generator/__init__.py
@@ -0,0 +1,20 @@
+from qolab.hardware.scpi import SCPIinstr
+
+class RFGenerator:
+    # Minimal set of methods to be implemented.
+    pass
+
+class RFGeneratorSCPI(SCPIinstr, RFGenerator):
+    """     
+    Do not instantiate directly, use
+    rm = pyvisa.ResourceManager()
+    ScopeSCPI(rm.open_resource('TCPIP::192.168.0.2::INSTR'))
+    """
+    pass
+    def __init__(self, resource):
+        SCPIinstr.__init__(self, resource)
+        RFGenerator.__init__(self)
+
+from .agilent_e8257d import AgilentE8257D
+
+
diff --git a/qolab/hardware/rf_generator/agilent_e8257d.py b/qolab/hardware/rf_generator/agilent_e8257d.py
new file mode 100644
index 0000000..eef3c7a
--- /dev/null
+++ b/qolab/hardware/rf_generator/agilent_e8257d.py
@@ -0,0 +1,57 @@
+from qolab.hardware.rf_generator import RFGeneratorSCPI
+from qolab.data.trace import Trace
+import re
+import numpy as np
+
+class AgilentE8257D(RFGeneratorSCPI):
+    """ Agilent E8257D RF generator """
+    def __init__(self, resource):
+        super().__init__(resource)
+        self.resource.read_termination='\n'
+
+    """ Note: Fixed frequency and Center frequency (of sweep)  are different in this model """
+
+    def getFreq(self):
+        qstr = f':FREQuency:Fixed?'
+        rstr = self.query(qstr)
+        return( float(rstr) )
+
+    def setFreq(self, freq):
+        cstr = f':FREQuency:FIXED {freq}Hz'
+        self.write(cstr)
+
+    def getSweepCentralFreq(self):
+        qstr = f':FREQuency:CENTer?'
+        rstr = self.query(qstr)
+        return( float(rstr) )
+
+    def setSweepCentralFreq(self, cfreq):
+        cstr = f':FREQuency:CENTer {cfreq}Hz'
+        self.write(cstr)
+
+    def getSweepSpan(self):
+        qstr = f':FREQuency:SPAN?'
+        rstr = self.query(qstr)
+        return( float(rstr) )
+
+    def setSweepSpan(self, span):
+        cstr = f':FREQuency:SPAN {span}Hz'
+        self.write(cstr)
+
+    def setSweep(self, cfreq=None, span=None):
+        if cfreq is not None:
+            self.setSweepCentralFreq(cfreq)
+        if cfreq is not None:
+            self.setSweepSpan(span)
+
+if __name__ == '__main__': 
+    import pyvisa
+    print("testing")
+    rm = pyvisa.ResourceManager()
+    print(rm.list_resources())    
+    instr=rm.open_resource('TCPIP::192.168.0.114::INSTR')
+    rfgen = AgilentE8257D(instr)
+    print(f'Fixed frequency: {rfgen.getFreq()}')
+    print(f'Sweep Central frequency: {rfgen.getSweepCentralFreq()}')
+    print(f'Sweep Span: {rfgen.getSweepSpan()}')
+