diff --git a/script/jitter_scan.py b/script/jitter_scan.py
index 9c8c7b7..4dc2465 100644
--- a/script/jitter_scan.py
+++ b/script/jitter_scan.py
@@ -28,21 +28,21 @@ print "Step = ", step
 
 # define all PVs
 # controlled variabales
-cv_rf_phase = PV("phase ref", SECTION + "-RLLE-DSP:PHASE-REFERENCE")
-cv_rf_amplt = PV("amplt ref", SECTION + "-RLLE-DSP:AMPLT-REFERENCE")
+cv_rf_phase = PV("phase_ref", SECTION + "-RLLE-DSP:PHASE-REFERENCE")
+cv_rf_amplt = PV("amplt_ref", SECTION + "-RLLE-DSP:AMPLT-REFERENCE")
 
 # measured variables
-mv_ref_jit_amplt = PV("REF amplt jit" ,SECTION + "-RLLE-REF10:SIG-AMPLT-JIT-P2P-REL")
-mv_ref_jit_phase = PV("REF phase jit" ,SECTION + "-RLLE-REF10:SIG-PHASE-JIT-P2P")
+mv_ref_jit_amplt = PV("REF_amplt_jit" ,SECTION + "-RLLE-REF10:SIG-AMPLT-JIT-P2P-REL")
+mv_ref_jit_phase = PV("REF_phase_jit" ,SECTION + "-RLLE-REF10:SIG-PHASE-JIT-P2P")
 
-mv_iqm_jit_amplt = PV("IQM amplt jit" ,SECTION + "-RIQM-DCP10:FOR-AMPLT-JIT-P2P-REL")
-mv_iqm_jit_phase = PV("IQM phase jit" ,SECTION + "-RIQM-DCP10:FOR-PHASE-JIT-P2P")
+mv_iqm_jit_amplt = PV("IQM_amplt_jit" ,SECTION + "-RIQM-DCP10:FOR-AMPLT-JIT-P2P-REL")
+mv_iqm_jit_phase = PV("IQM_phase_jit" ,SECTION + "-RIQM-DCP10:FOR-PHASE-JIT-P2P")
 
-mv_pre_jit_amplt = PV("PRE amplt jit" ,SECTION + "-RPRE-DCP10:FOR-AMPLT-JIT-P2P-REL")
-mv_pre_jit_phase = PV("PRE phase jit" ,SECTION + "-RPRE-DCP10:FOR-PHASE-JIT-P2P")
+mv_pre_jit_amplt = PV("PRE_amplt_jit" ,SECTION + "-RPRE-DCP10:FOR-AMPLT-JIT-P2P-REL")
+mv_pre_jit_phase = PV("PRE_phase_jit" ,SECTION + "-RPRE-DCP10:FOR-PHASE-JIT-P2P")
 
-mv_kly_jit_amplt = PV("KLY amplt jit" ,SECTION + "-RKLY-DCP10:FOR-AMPLT-JIT-P2P-REL")
-mv_kly_jit_phase = PV("KLY phase jit" ,SECTION + "-RKLY-DCP10:FOR-PHASE-JIT-P2P")
+mv_kly_jit_amplt = PV("KLY_amplt_jit" ,SECTION + "-RKLY-DCP10:FOR-AMPLT-JIT-P2P-REL")
+mv_kly_jit_phase = PV("KLY_phase_jit" ,SECTION + "-RKLY-DCP10:FOR-PHASE-JIT-P2P")
 
 
 # initialize all PVs