diff --git a/script/PhotonFluxSpectrum.py b/script/PhotonFluxSpectrum.py
index 66f8e350..77489345 100644
--- a/script/PhotonFluxSpectrum.py
+++ b/script/PhotonFluxSpectrum.py
@@ -9,10 +9,10 @@ AuxCurrent: not connected
 import time
 
 # G1200 1x1 reference sscan_2264 (elog:114)
-STARTPOS = (100)
-ENDPOS = (2000)
-STEPS = 25.0
-LATENCY = 5.0
+STARTPOS = (260)
+ENDPOS = (310)
+STEPS = 1.0
+LATENCY = 1.0
 DWELL = 1.0
 
 SampleCurrentGain.write("L, 10^8")