Timothy O'Hanlon
--- a/locklost/config.py
+++ b/locklost/config.py
+    #Threshold is divided by two for the counts can be positive or negative 
+    SATURATION_THRESHOLD_16 = (2**16) / 2
+    SATURATION_THRESHOLD_18 = (2**18) / 2
+    SATURATION_THRESHOLD_20 = (2**20) / 2
+    
+    if IFO == 'L1':
+        # This corresponds to a change from 18 to 20-bit DAC for ETMX L3 channels.
+        # ETMX L3 channels after this date have counts that are four times higher
+        CHANGE_DAC_DATE = 1188518418
+        #This gets the DAC configuration in line with https://alog.ligo-la.caltech.edu/aLOG/index.php?callRep=63133
+        #Exact DAC times should be added later to better analyze old events
+        CHANGE_DAC_DATE2 = 1358033599
+        #https://alog.ligo-la.caltech.edu/aLOG/index.php?callRep=63808
+        CHANGE_DAC_DATE3 = 1361911279
+    
+    if IFO == 'H1':
--- a/locklost/config.py
+++ b/locklost/config.py
+            'SUS-ZM1_M1',
+            'SUS-ZM2_M1',
+            'SUS-OM1_M1',
+            'SUS-OM2_M1',
+            'SUS-OM3_M1'
+        ]
+        if any(x in chan for x in SIXTEEN_BIT_CHANNELS):
+            return SATURATION_THRESHOLD_16
+        return SATURATION_THRESHOLD_18
+    
+    elif gps >= CHANGE_DAC_DATE and gps < CHANGE_DAC_DATE2:
+        # ETM's are 20-bit and were changed at a date within our wanted
+        # lockloss time range
+        if IFO == 'H1':
+            ETM_L3_CHANNELS = 'SUS-ETMX_L3'
+        if IFO == 'L1':
--- a/locklost/config.py
+++ b/locklost/config.py
+            EIGHTEEN_BIT_CHANNELS = [
+                'SUS-SRM_M1',
+                'SUS-SR3',
+                'SUS-OMC',
+                'SUS-IM'
+            ]
+            SIXTEEN_BIT_CHANNELS = [
+                'SUS-ZM',
+                'SUS-OM1',
+                'SUS-OM2',
+                'SUS-OM3',
+                'SUS-RM'
+            ]
+            if gps >= CHANGE_DAC_DATE3:
+                TWENTY_BIT_CHANNELS = TWENTY_BIT_CHANNELS + EIGHTEEN_BIT_CHANNELS
+        if IFO == 'H1':