Sony DG805BLM Instruction Manual page 36

Switching of Resolution
Resolution is switched with S2-2, S2-3 and S2-4 (default setting: all OFF).
Resolution switch
(S2-2)
OFF
OFF
ON
OFF
ON
* Combinations other than those shown in the table cannot be used.
The phase difference between phases A and B is taken to be the resolution.
Phase A
Phase B
1 resolution
8
(E)
Resolution switch
(S2-3)
OFF
ON
ON
ON
ON
Resolution switch
(S2-4)
OFF
OFF
OFF
ON
ON
Resolution u u u u u m
0.5
1
2
5
10
DG805BLM/DG805BLE
DG810BM/DG810BE
DG810BLM/DG810BLE