diff --git a/sis8300bcmApp/Db/sis8300bcm-diff.template b/sis8300bcmApp/Db/sis8300bcm-diff.template
index 7bbd7f0a433a208ef80fe84c95b52b586cc99089..3fa69435f52141521515ccb7d4fa0cd1e7aa8f67 100644
--- a/sis8300bcmApp/Db/sis8300bcm-diff.template
+++ b/sis8300bcmApp/Db/sis8300bcm-diff.template
@@ -590,7 +590,9 @@ record(ao, "$(P)$(R)FastWindowWidth")
     field(OUT,  "@asyn($(PORT),$(ADDR=0),$(TIMEOUT=1))BCM.DIFF.FAST_WINDOW_WIDTH")
     field(EGU,  "ns")
     field(PREC, "4")
-    field(VAL,  "23.0")
+    field(DRVH, "2900.0")
+    field(DRVL, "30.0")
+    field(VAL,  "30.0")
     field(PINI, "YES")
     field(ASG,  "critical")
     info(autosaveFields, "VAL")
@@ -611,6 +613,8 @@ record(ao, "$(P)$(R)MediumWindowWidth")
     field(OUT,  "@asyn($(PORT),$(ADDR=0),$(TIMEOUT=1))BCM.DIFF.MEDIUM_WINDOW_WIDTH")
     field(EGU,  "us")
     field(PREC, "4")
+    field(DRVH, "65000.0")
+    field(DRVL, "2.0")
     field(VAL,  "2.0")
     field(PINI, "YES")
     field(ASG,  "critical")