diff --git a/script/KeithleyVoltageScan.py b/script/KeithleyVoltageScan.py
index 0e6552b6..f457c9b3 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 = (-0.5, 4.)
-STEPS = 0.5
+POSITIONS = (-2, 7.)
+STEPS = 0.25
 LATENCY = 1.0
 RELATIVE = False