diff --git a/site_ansto/instrument/hipd/config/hmm/hmm_configuration.tcl b/site_ansto/instrument/hipd/config/hmm/hmm_configuration.tcl
index f273c9e0..98d8943b 100644
--- a/site_ansto/instrument/hipd/config/hmm/hmm_configuration.tcl
+++ b/site_ansto/instrument/hipd/config/hmm/hmm_configuration.tcl
@@ -23,6 +23,8 @@ proc ::histogram_memory::init_OAT_TABLE {args} {
 
       set clock_scale 1000
       set freq 50
+      hmm configure fat_clock_scale $clock_scale
+      hmm configure fat_frame_frequency $freq
       hmm configure fat_frame_source INTERNAL
 
       switch $resolution {
diff --git a/site_ansto/instrument/hrpd/config/hmm/hmm_configuration.tcl b/site_ansto/instrument/hrpd/config/hmm/hmm_configuration.tcl
index b15eeb9b..86df0649 100644
--- a/site_ansto/instrument/hrpd/config/hmm/hmm_configuration.tcl
+++ b/site_ansto/instrument/hrpd/config/hmm/hmm_configuration.tcl
@@ -15,6 +15,8 @@ proc ::histogram_memory::init_OAT_TABLE {} {
 
     set clock_scale 1000
     set freq 50
+    hmm configure fat_clock_scale $clock_scale
+    hmm configure fat_frame_frequency $freq
     hmm configure fat_frame_source INTERNAL
 
     OAT_TABLE -set X { 127.5 126.5 } NXC 128 Y { -0.5 3.5 } NYC 128 T { 0 20000 } NTC 1 
diff --git a/site_ansto/instrument/kookaburra/config/hmm/hmm_configuration.tcl b/site_ansto/instrument/kookaburra/config/hmm/hmm_configuration.tcl
index 93305dfd..e13e0db3 100644
--- a/site_ansto/instrument/kookaburra/config/hmm/hmm_configuration.tcl
+++ b/site_ansto/instrument/kookaburra/config/hmm/hmm_configuration.tcl
@@ -17,6 +17,8 @@ proc ::histogram_memory::init_OAT_TABLE {} {
 
     set clock_scale 1000
     set freq 50
+    hmm configure fat_clock_scale $clock_scale
+    hmm configure fat_frame_frequency $freq
     hmm configure fat_frame_source INTERNAL
 
     OAT_TABLE -set X { 7.5 6.5 } NXC 8 Y { -0.5 0.5 } NYC 1024 T { 0 200000 } NTC 1 
diff --git a/site_ansto/instrument/lyrebird/config/hmm/hmm_configuration.tcl b/site_ansto/instrument/lyrebird/config/hmm/hmm_configuration.tcl
index 9390b9ea..305dec01 100644
--- a/site_ansto/instrument/lyrebird/config/hmm/hmm_configuration.tcl
+++ b/site_ansto/instrument/lyrebird/config/hmm/hmm_configuration.tcl
@@ -17,6 +17,8 @@ proc ::histogram_memory::init_OAT_TABLE {} {
 
     set clock_scale 1000
     set freq 50
+    hmm configure fat_clock_scale $clock_scale
+    hmm configure fat_frame_frequency $freq
     hmm configure fat_frame_source INTERNAL
 
     OAT_TABLE -set X { 29.5 28.5 } NXC 30 Y { -0.5 0.5 } NYC 1024 T { 0 200000 } NTC 1 
diff --git a/site_ansto/instrument/reflectometer/config/hmm/hmm_configuration.tcl b/site_ansto/instrument/reflectometer/config/hmm/hmm_configuration.tcl
index 8c55f584..7bbe9d27 100644
--- a/site_ansto/instrument/reflectometer/config/hmm/hmm_configuration.tcl
+++ b/site_ansto/instrument/reflectometer/config/hmm/hmm_configuration.tcl
@@ -14,6 +14,8 @@ proc ::histogram_memory::init_OAT_TABLE {} {
 
     set clock_scale 1000
     set freq 50
+    hmm configure fat_clock_scale $clock_scale
+    hmm configure fat_frame_frequency $freq
     hmm configure fat_frame_source EXTERNAL
 
       OAT_TABLE -set X { -210.5 -209.5 } NXC 421 Y { -110.5 -109.5 } NYC 221 T { 0 20000 } NTC 1 
diff --git a/site_ansto/instrument/rsd/config/hmm/hmm_configuration.tcl b/site_ansto/instrument/rsd/config/hmm/hmm_configuration.tcl
index e6a72148..c9028418 100644
--- a/site_ansto/instrument/rsd/config/hmm/hmm_configuration.tcl
+++ b/site_ansto/instrument/rsd/config/hmm/hmm_configuration.tcl
@@ -16,6 +16,8 @@ proc ::histogram_memory::init_OAT_TABLE {} {
 
     set clock_scale 1000
     set freq 50
+    hmm configure fat_clock_scale $clock_scale
+    hmm configure fat_frame_frequency $freq
     hmm configure fat_frame_source EXTERNAL
 
     OAT_TABLE -set X { -210.5 -209.5 } NXC 421 Y { -210.5 -209.5 } NYC 421 T { 0 20000 } NTC 1 
diff --git a/site_ansto/instrument/sans/config/hmm/hmm_configuration.tcl b/site_ansto/instrument/sans/config/hmm/hmm_configuration.tcl
index d42a208a..dbd4b87c 100644
--- a/site_ansto/instrument/sans/config/hmm/hmm_configuration.tcl
+++ b/site_ansto/instrument/sans/config/hmm/hmm_configuration.tcl
@@ -15,6 +15,8 @@ proc ::histogram_memory::init_OAT_TABLE {} {
 
     set clock_scale 1000
     set freq 50
+    hmm configure fat_clock_scale $clock_scale
+    hmm configure fat_frame_frequency $freq
     hmm configure fat_frame_source INTERNAL
 
     OAT_TABLE -set X { 191.5 190.5 } NXC 192 Y { -0.5 0.5 } NYC 192 T { 0 20000 } NTC 1