added dwell time before frequency change in hope free regime

1 files changed, 5 insertions, 1 deletions

diff --git a/qolab/hardware/rf_generator/qol_lmx2487.py b/qolab/hardware/rf_generator/qol_lmx2487.py
index b402c0e..340384c 100644
--- a/qolab/hardware/rf_generator/qol_lmx2487.py
+++ b/qolab/hardware/rf_generator/qol_lmx2487.py
@@ -2,6 +2,7 @@ from qolab.hardware.basic import BasicInstrument
 from qolab.hardware.rf_generator import RFGenerator
 import serial
 import re
+import time
 
 
 class QOL_LMX2487(RFGenerator):
@@ -19,8 +20,9 @@ class QOL_LMX2487(RFGenerator):
         self.log = []
         self.logCapacity = 10
         self._FreqFixed = None
-        self.hopeFreeFreqJump = 100e3 # we break laser lock if Freq change is larger
         self.hopeFree = True
+        self.hopeFreeFreqJump = 100e3 # we break laser lock if Freq change is larger
+        self.dwellTime=0.1 # needed for hope free setling
         if setToDefaults:
             self.sendSerialCmd("set_lmx2487_board_to_default_state()")
 
@@ -72,6 +74,8 @@ class QOL_LMX2487(RFGenerator):
             self._FreqFixed = fr
             cmd_str=f'setFreq({fr:.2f})'
             self.sendSerialCmd(cmd_str)
+            if not finished:
+                time.sleep(self.dwellTime)
 
     @BasicInstrument.tsdb_append
     def getFreqFixed(self):