Oce 7050 Technical & Service Manual page 62

Level code indication:
Level 0 Level 1 Level 2
-4
ed. 6
film
Description
+4 exp. zero level +2.50% min.: 8.00%
+3 exp. zero level +1.00%
+2 exp. zero level +0.25%
+1 exp. zero level +0.05%
+0 no function
-1 exp. zero level -0.05%
-2 exp. zero level -0.25%
-3 exp. zero level -1.00%
-4 exp. zero level -2.50%
paper
Remarks
max.: 52.10%
default: 20%
Faults 31