diff --git a/secop_psi/FG_Lecroy_3000.py b/secop_psi/FG_Lecroy_3000.py
index a508559..8af00db 100644
--- a/secop_psi/FG_Lecroy_3000.py
+++ b/secop_psi/FG_Lecroy_3000.py
@@ -24,42 +24,17 @@ from secop.core import Readable, Parameter, Override, Command, FloatRange, Tuple
     HasIodev, StringIO, Done, Attached, IntRange, BoolType, EnumType,StringType
 
 
-#class SR7270(StringIO):
- #   end_of_line = b'\x00'
-
-class StringIO(secop.stringio.StringIO):
-    identification = [('*IDN?', 'WST,WaveStation 3000,.*')]
-    wait_before = 0.05    
-# to update....    
-#    def do_communicate(self, command):  #remove dash from terminator
- #       reply = StringIO.do_communicate(self, command)
-  #      status = self._conn.readbytes(2, 0.1)  # get the 2 status bytes
-   #     print('comm=',command,'reply=',reply,'status=',status)
-   #     return reply + ';%d;%d' % tuple(status)
-       
-
-
-    
-    
-    
-class channels(HasIodev, Readable): 
+class Channel(HasIodev, Writable):
     properties = {
-        'out1_arg': Attached(),
-        'freq1_arg': Attached(),
-        'amp1_arg': Attached(),
-        'off1_arg': Attached(),
-        'out2_arg': Attached(),
-        'freq2_arg': Attached(),
-        'amp2_arg': Attached(),
-        'off2_arg': Attached(),   
+        'channel':Property('choose channel to manipulate',IntRange(1,2)),
     }
-    
     parameters = {
-        'value': Parameter('channel status',StringType, poll=False,initwrite=False), 
-        'channel':Parameter('choose channel to manipulate',IntRange(1,2), poll=True,initwrite=False,default=1),
-        'freq': Parameter('exc_freq_int',
+        'value': Override('exc_freq_int',
+                          FloatRange(unit='Hz'),
+                          poll=True, default=1000),
+        'target': Override('frequency set',
                           FloatRange(1e-6,20e6,unit='Hz'),
-                          poll=True, readonly=False, initwrite=True, default=1000),
+                          poll=True, initwrite=True, default=1000),
         'amp': Parameter('exc_volt_int',
                           FloatRange(0.00,5,unit='Vrms'),
                           poll=True, readonly=False, initwrite=True, default=0.1),
@@ -73,19 +48,10 @@ class channels(HasIodev, Readable):
 
         }
     pollerClass = Poller
-    ioidevClass = StringIO
-        
-
-#    def comm(self, command):
- #       reply, status, overload = self.sendRecv(command).split(';')
-  #      if overload != '0':
-   #         self.status = self.Status.WARN, 'overload %s' % overload
-    #    else:
-    #        self.status = self.Status.IDLE, ''
-    #    return reply
 
     
 #update instruments values    
+"""
     def read_value(self):
         #response type: self._freq1_arg.value = self.freq(1) C1:BSWV TYPE', 'SINE', 'FRQ', '1000', 'AMP', '3', 'OFST', '3
         # channel 1 status
@@ -102,7 +68,17 @@ class channels(HasIodev, Readable):
         self._off2_arg.value = reply[7] 
         self._out2_arg.value = out2.split('')[1]
         return reply, out, reply2, out2
+"""
 
+    def read_value(self):
+        reply  = self.sendRecv('C%d:BSWV FRQ?' % self.channel)
+            
+        return reply
+
+
+    def write_target(self,value):
+        self.sendRecv('C%d:BSWV FRQ, %g' % (self.channel, str(value)+'Hz'))
+        
 #signal channel parameter         
     
     def read_channel(self):
@@ -129,6 +105,7 @@ class channels(HasIodev, Readable):
                 
         return reply      
     
+"""
 #signal freq parameter      
     def read_freq(self):
         ch=str(self.channel)
@@ -141,7 +118,8 @@ class channels(HasIodev, Readable):
         self.sendRecv('C'+ch+':BSWV FRQ, %g' % str(value)+'Hz')
         
         return value
-    
+"""
+ 
 #signal amplitude parameter   
     def read_amp(self):
         ch=str(self.channel)
@@ -219,4 +197,4 @@ class arg2(Readable):
     pollerClass = None
     parameters = {
         'value': Override(datatype=BoolType(unit='')),
-    }   
\ No newline at end of file
+    }