diff --git a/script/PhotonFluxSpectrum.py b/script/PhotonFluxSpectrum.py
index 55080a90..cddf9647 100644
--- a/script/PhotonFluxSpectrum.py
+++ b/script/PhotonFluxSpectrum.py
@@ -8,12 +8,20 @@ AuxCurrent: not connected
 
 import time
 
-STARTPOS = (270.0)
-ENDPOS = (310.0)
-STEPS = 0.5
-LATENCY = 1.0
+# G1200 full spectrum
+STARTPOS = (100.0)
+ENDPOS = (120.0)
+STEPS = 25.0
+LATENCY = 5.0
 DWELL = 1.0
 
+# carbon edge
+#STARTPOS = (270.0)
+#ENDPOS = (310.0)
+#STEPS = 0.5
+#LATENCY = 1.0
+#DWELL = 1.0
+
 # G1200 1x1 reference sscan_2264 (elog:114)
 #SampleCurrentGain.write("L, 10^8")
 #RefCurrentGain.write("L, 10^9")