diff --git a/.gitignore b/.gitignore
index 9fad30c2..bed8428a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -24,3 +24,7 @@ doc/_build
 
 # pyinstaller
 dist/
+
+*.cfg
+*.bk.tnt
+*.tps
\ No newline at end of file
diff --git a/cfg/psi_nmr_setup_cfg.py b/cfg/psi_nmr_setup_cfg.py
index 46e73cd3..108d144f 100644
--- a/cfg/psi_nmr_setup_cfg.py
+++ b/cfg/psi_nmr_setup_cfg.py
@@ -25,7 +25,7 @@ if('Capacitance' in enabled_modules):
     Mod('io_capacitance',
         'frappy_psi.capacitance_readings.TSSOP16.TSSOP16_IO',
         'communication',
-        uri='serial://COM4?baudrate=9600+bytesize=8+parity=none+stopbits=1')
+        uri='serial://COM5?baudrate=9600+bytesize=8+parity=none+stopbits=1')
 
     Mod('TSSOP16', 'frappy_psi.capacitance_readings.TSSOP16.TSSOP16', 'Capacitance-reading Arduino (with TSSOP16)', io='io_capacitance')
 
diff --git a/frappy_psi/capacitance_readings/TSSOP16.py b/frappy_psi/capacitance_readings/TSSOP16.py
index 91d1011a..1290cffb 100644
--- a/frappy_psi/capacitance_readings/TSSOP16.py
+++ b/frappy_psi/capacitance_readings/TSSOP16.py
@@ -5,7 +5,7 @@ import traceback
 from frappy.core import Readable, Parameter, FloatRange, HasIO, StringIO, Property, IntRange, IDLE, BUSY, WARN, ERROR, Drivable, BoolType, Attached
 
 class TSSOP16_IO(StringIO):
-    end_of_line = '\r\n'
+    end_of_line = '\r'
     wait_before = 3.0
     timeout=1
     identification = [ ('*IDN?', r'0x48,ACM1219,.*') ]
@@ -22,10 +22,9 @@ class TSSOP16(HasIO, Readable):
             l = self.communicate('readCVT')
             vals = l.split(',')
             vals = [ float(v) for v in vals ]
-            print(vals)
             return vals[0]
         except:
-            return self.custom_read_off_cvt(recursive_layer=recursive_layer+1)
+            print('Retrying: ', recursive_layer+1)
             traceback.print_exc()
             self.io.closeConnection()
             self.io.connectStart()
diff --git a/frappy_psi/network_analysers/ZVL/ZVLNode.py b/frappy_psi/network_analysers/ZVL/ZVLNode.py
index 6cc6e1ac..cb15c562 100644
--- a/frappy_psi/network_analysers/ZVL/ZVLNode.py
+++ b/frappy_psi/network_analysers/ZVL/ZVLNode.py
@@ -21,7 +21,10 @@ class ZVLNode(fc.Readable):
         analyser_ip: the IP address of the network analyser. Best to set in the config!
     """
     
-    value = fc.Parameter('value', fc.ArrayOf(fc.FloatRange(unit='dB'), minlen=1000, maxlen=1000), readonly=True)
+    value = fc.Parameter('value', 
+                         fc.StructOf(magnitudes=fc.ArrayOf(fc.FloatRange(unit='dB'), minlen=1000, maxlen=1000), 
+                                     frequencies=fc.ArrayOf(fc.FloatRange(unit='Hz'), minlen=1000, maxlen=1000)), 
+                         readonly=True)
     status = fc.Parameter(datatype=frappy.datatypes.StatusType(fc.Readable, "DISABLED", 'PREPARED', 'BUSY'), default=('IDLE', 'idle'))
     pollinterval = fc.Parameter(default=1)
     central_freq = fc.Parameter('central_freq', fc.FloatRange(min=9_000, max=13_600_000_000, unit='Hz'), default=10_000_000, readonly=False)
@@ -41,16 +44,25 @@ class ZVLNode(fc.Readable):
     @fc.Command(description="Update data") 
     def acq(self):
         self.status = ('BUSY', 'acquiring')
+        #print('acq')
         self.NA.set_freq_span(self.central_freq, self.freq_span)
         freq, vals = self.NA.get_data()
         self.value = { 'frequencies': freq, 'magnitudes': vals }
         self.status = ('IDLE', 'idle')
     
-    def write_calibration(self, f):
-        self.calibration = f
-        self.NA.load_calibration(self.calibration)
-        return self.read_calibration()
+    #@fc.Command(description='Save current calibration')
+    #def write_calibration(self, f):
+    #    self.calibration = f
+    #    self.NA.load_calibration(self.calibration)
+    #    return self.read_calibration()
     
+    @fc.Command(description='Reload last used calibration')
+    def reload_calibration(self):
+        self.NA.reload_calibration()
+        freq_start, freq_stop = self.NA.get_freq_range()
+        self.freq_span = freq_stop - freq_start
+        self.central_freq = freq_start + self.freq_span/2.0
+
     def write_central_freq(self, f):
         self.central_freq = (f)
         self.acq()
diff --git a/frappy_psi/tnmr/OTFModule.py b/frappy_psi/tnmr/OTFModule.py
index 3212af69..1222ce71 100644
--- a/frappy_psi/tnmr/OTFModule.py
+++ b/frappy_psi/tnmr/OTFModule.py
@@ -245,15 +245,15 @@ class ProgrammedSequence(fc.Drivable): # Drivable only for kill() funcitonality
         
     def read_value(self):
         newvals = {}
-        #try:
-        d = self.tnmr().get_data()
-        newvals['reals'] = d[0]
-        newvals['imags'] = d[1]
-        newvals['t']     = [ self.compiled_parameters['acquisition_time'] * i/len(d[0]) for i in range(0, len(d[0])) ]
-        #except:
-        #    newvals['reals'] = []
-        #    newvals['imags'] = []
-        #    newvals['t'] = []
+        try:
+            d = self.tnmr().get_data()
+            newvals['reals'] = d[0]
+            newvals['imags'] = d[1]
+            newvals['t']     = [ self.compiled_parameters['acquisition_time'] * i/len(d[0]) for i in range(0, len(d[0])) ]
+        except:
+            newvals['reals'] = []
+            newvals['imags'] = []
+            newvals['t'] = []
         return newvals
         
     def read_num_acqs_actual(self):