diff --git a/script/KeithleyVoltageScan.py b/script/KeithleyVoltageScan.py
index d95b56f0..88268007 100644
--- a/script/KeithleyVoltageScan.py
+++ b/script/KeithleyVoltageScan.py
@@ -5,8 +5,8 @@ Keithley voltage scan
 
 POSITIONERS = (Keithley2Voltage)
 SENSORS = (Counts, SampleCurrent, RefCurrent, MachineCurrent, EnergyDistribution, AngleDistribution, Scienta.dataMatrix)
-POSITIONS = (-15.,15.)
-STEPS = 15.
+POSITIONS = (2.,-15.)
+STEPS = -0.5
 LATENCY = 1.0
 RELATIVE = False