diff --git a/script/optics/ExitSlitYScan.py b/script/optics/ExitSlitYScan.py
index 4fc1da94..9f013c81 100644
--- a/script/optics/ExitSlitYScan.py
+++ b/script/optics/ExitSlitYScan.py
@@ -3,7 +3,7 @@ exit slit calibration scan
 
 manual settings: photon energy 800 eV (G1200), FE = 1 x 1, ADC/Keithley averaging
 
-set keithleys manuall to free run!
+set keithleys manually to "poll curr slow" and fixed range (20 nA for diode, 200 pA for RMU)
 """
 
 POSITIONERS = (ExitSlitY)