diff --git a/EPICS_R3.13.syncTS/startup.script_epicsdependent b/EPICS_R3.13.syncTS/startup.script_epicsdependent
index bb35f71..80a10d8 100644
--- a/EPICS_R3.13.syncTS/startup.script_epicsdependent
+++ b/EPICS_R3.13.syncTS/startup.script_epicsdependent
@@ -31,6 +31,7 @@ require "base"
 require "slsDev"
 
 # setup clock
+putenv("EPICS_TS_MIN_WEST=-60")
 require "mrcevg"
 require "mrcevr"
 require "TSstat"