diff --git a/script/jitter_scan.py b/script/jitter_scan.py
index e8ce393..1fcc85e 100644
--- a/script/jitter_scan.py
+++ b/script/jitter_scan.py
@@ -9,6 +9,38 @@ stop = 180.0
 step = 10.0
 
 
+def elogllrf(subject, message, attachments = [], system, subsystem, section, machine = "SwissFEL", logbook = "LLRF", encoding=1):
+    """
+    Add entry to ELOG.
+    """
+    if author is None:
+        author = "pshell" + controller.getUser().name
+    entry = ""
+   
+    cmd = 'G_CS_ELOG_add -l "' + logbook+ '" '
+    cmd = cmd + '-a "Author=' + author + '" '
+    cmd = cmd + '-a "Entry=' + entry + '" '
+    cmd = cmd + '-a "Subject=' + subject + '" '
+    cmd = cmd + '-a "Section=' + section + '" '
+    cmd = cmd + '-a "System=' + system + '" '
+    cmd = cmd + '-a "Subsystem=' + subsystem + '" '
+    cmd = cmd + '-a "Machine=' + machine + '" '
+    cmd = cmd + '-a "Domain=All"'
+    for attachment in attachments:
+        cmd = cmd + '-f "' + attachment + '" '
+    cmd = cmd + '-x -n ' + str(encoding)
+    cmd = cmd + ' "' + message + '"'
+    print cmd
+    #os.system (cmd)
+    #print os.popen(cmd).read()  
+    import subprocess
+    proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, shell=True)
+    (out, err) = proc.communicate()
+    if (err is not None) and err!="":
+        raise Exception(err)
+    print out
+
+
 
 print "SECTION = ", SECTION
 print "Start = ", start