diff --git a/.gitignore b/.gitignore
index dde5f156f2a..f727e6ed339 100644
--- a/.gitignore
+++ b/.gitignore
@@ -79,4 +79,7 @@ tmp/
 
 docs/examples/data/*
 
-.idea/
\ No newline at end of file
+.idea/
+
+# Mac files
+.DS_Store
diff --git a/qcodes/instrument_drivers/rohde_schwarz/SGS100A.py b/qcodes/instrument_drivers/rohde_schwarz/SGS100A.py
index f4c2857ab0c..bb487cd730d 100644
--- a/qcodes/instrument_drivers/rohde_schwarz/SGS100A.py
+++ b/qcodes/instrument_drivers/rohde_schwarz/SGS100A.py
@@ -56,6 +56,11 @@ def __init__(self, name, address, **kwargs):
                            set_cmd=self.set_status,
                            get_parser=self.parse_on_off,
                            vals=vals.Strings())
+        self.add_parameter('IQ_state',
+                           get_cmd=':IQ:STAT?',
+                           set_cmd=self.set_IQ_state,
+                           get_parser=self.parse_on_off,
+                           vals=vals.Strings())
         self.add_parameter('pulsemod_state',
                            get_cmd=':SOUR:PULM:STAT?',
                            set_cmd=self.set_pulsemod_state,
@@ -102,6 +107,13 @@ def set_status(self, stat):
             raise ValueError('Unable to set status to %s, ' % stat +
                              'expected "ON" or "OFF"')
 
+    def set_IQ_state(self, stat):
+        if stat.upper() in ('ON', 'OFF'):
+            self.write(':IQ:STAT %s' % stat)
+        else:
+            raise ValueError('Unable to set status to %s, ' % stat +
+                             'expected "ON" or "OFF"')
+
     def set_pulsemod_state(self, stat):
         if stat.upper() in ('ON', 'OFF'):
             self.write(':PULM:SOUR EXT')