diff --git a/script/KeithleyVoltageScan.py b/script/KeithleyVoltageScan.py
index 8bf3433b..93b99b45 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 = (-50,50)
-STEPS = 5
+POSITIONS = (-25,25)
+STEPS = 100
 LATENCY = 1.0
 
 RELATIVE = False