diff --git a/script/optics/ExitSlitYScanKei.py b/script/optics/ExitSlitYScanKei.py
index ad43b334..9ceb13f6 100644
--- a/script/optics/ExitSlitYScanKei.py
+++ b/script/optics/ExitSlitYScanKei.py
@@ -18,17 +18,17 @@ DWELL = 1.0
 KEI_DIODE = "X03DA-KEITHLEY-1:"
 KEI_RMU = "X03DA-KEITHLEY-2:"
 
-caput(KEI_DIODE + "READSCAN.SCAN", "Passive")
+caput(KEI_DIODE + "READSCAN.SCAN", 0)
 caput(KEI_DIODE + "NPLC", 1)
 caput(KEI_DIODE + "NAVG", DWELL / 0.02)
 caput(KEI_DIODE + "TCOUNT", 1)
-caput(KEI_DIODE + "RANGE", "200 nA")
+caput(KEI_DIODE + "RANGE", 6) # 200 nA
 
-caput(KEI_RMU + "READSCAN.SCAN", "Passive")
+caput(KEI_RMU + "READSCAN.SCAN", 0)
 caput(KEI_RMU + "NPLC", 1)
 caput(KEI_RMU + "NAVG", DWELL / 0.02)
 caput(KEI_RMU + "TCOUNT", 1)
-caput(KEI_RMU + "RANGE", "2 nA")
+caput(KEI_RMU + "RANGE", 8) # 2 nA
 
 def trig():
     wait_beam()