diff --git a/KEITHLEY-617/createImages b/KEITHLEY-617/createImages
index 4e8e1e8a0035a7da874a074aaa4dd6c6fa7eaadf..866f1098f91ae259d891f4844b38154888e75007 100755
--- a/KEITHLEY-617/createImages
+++ b/KEITHLEY-617/createImages
@@ -11,7 +11,7 @@
 
 MAIN="KEITHLEY-617" # device name
 IMAGE_DIR=./images
-MAX_DIGITS=7 # do not edit!
+MAX_DIGITS=8 # do not edit!
 MAX_FILES=10 # do not edit!
 NUMBER_OF_DIGITS=$MAX_DIGITS
 
@@ -52,6 +52,7 @@ digitFile[7]='digit-7.png'
 digitFile[8]='digit-8.png'
 digitFile[9]='digit-9.png'
 digitFile[10]='minus.png'
+digitFile[11]=$emptyCanvas
 
 NUM2CHAR[0]='0'
 NUM2CHAR[1]='1'
@@ -64,14 +65,16 @@ NUM2CHAR[7]='7'
 NUM2CHAR[8]='8'
 NUM2CHAR[9]='9'
 NUM2CHAR[10]='-'
+NUM2CHAR[11]='_'
 
 digitPos[1]='+57+123'
 digitPos[2]='+101+123'
 digitPos[3]='+145+123'
 digitPos[4]='+189+123'
 digitPos[5]='+233+123'
-digitPos[6]='+321+123'
-digitPos[7]='+365+123'
+digitPos[6]='+277+123'
+digitPos[7]='+321+123'
+digitPos[8]='+365+123'
 
 dotPos[1]=${digitPos[1]}
 dotPos[2]=${digitPos[2]}
@@ -80,6 +83,7 @@ dotPos[4]=${digitPos[4]}
 dotPos[5]=${digitPos[5]}
 dotPos[6]=${digitPos[6]}
 dotPos[7]=${digitPos[7]}
+dotPos[8]=${digitPos[8]}
 
 for ((FNb=1; FNb<=MAX_FILES; FNb++)); do
 
@@ -87,11 +91,8 @@ value=""
 DPR=$((RANDOM % $NUMBER_OF_DIGITS + 1)) # random dot position (1..$NUMBER_OF_DIGITS)
 for (( i=1; i<=$MAX_DIGITS; i++ )); do
   if (( $i <= $NUMBER_OF_DIGITS )); then
-    R=$((RANDOM % 11)) # random digit number (0..10='0'..'-')
+    R=$((RANDOM % 12)) # random digit number (0..11='0'..'_')
     eval DIGIT$i=${digitFile[R]}
-    if (( $i == 6 )); then
-      value+="_"
-    fi
     value+="${NUM2CHAR[R]}"
     if [ $DPR == $i ]; then
       eval DOT$i="$dotFile"
@@ -124,6 +125,8 @@ convert body.png \
   $DOT6     -geometry ${dotPos[6]}    -composite \
   $DIGIT7   -geometry ${digitPos[7]}  -composite \
   $DOT7     -geometry ${dotPos[7]}    -composite \
+  $DIGIT8   -geometry ${digitPos[8]}  -composite \
+  $DOT8     -geometry ${dotPos[8]}    -composite \
   $fname
   
 exiv2 -M"set Exif.Image.ImageDescription value=$value" $fname
diff --git a/KEITHLEY-617/dot.png b/KEITHLEY-617/dot.png
index cfdbf2d72d6f3a5408b0f3becf336e69e8a5c4d5..b0dee00394c1c884ee6792cb6d7665743feadf5a 100644
Binary files a/KEITHLEY-617/dot.png and b/KEITHLEY-617/dot.png differ