diff --git a/script/optics/ExitSlitYScanKei.py b/script/optics/ExitSlitYScanKei.py
index 9375c737..a6949959 100644
--- a/script/optics/ExitSlitYScanKei.py
+++ b/script/optics/ExitSlitYScanKei.py
@@ -47,7 +47,7 @@ caput(KEI_DIODE + "RANGE", 6) # 200 nA
 #caput(KEI_RMU + "NPLC", 1)
 caput(KEI_RMU + "NAVG", 5)
 #caput(KEI_RMU + "TCOUNT", 1)
-caput(KEI_RMU + "RANGE", 8) # 2 nA
+caput(KEI_RMU + "RANGE", 9) # 200 pA
 
 time.sleep(1.0)