Hitachi SU-1000 Operating Instructions Manual page 27

5.3.3 ON/OFF menu (ADJUST-2) & description.
ADJUST-2
SYSTEM
SD DETAIL ON/OFF
TIMING
ASPECT COMB HD MODE
16:9 FILTER ON 1080i
ADJUST-2
SYSTEM
SD DETAIL
TIMING
ASPECT COMB HD MODE
4:3 FILTER ON 720p
ASPECT
COMB FILTER
HD MODE
ON/OFF
Item Setting
16:9
4:3
ON
OFF
1080i
720P
15
Factory Description
setting
Selects aspect ratio
Selects comb filter on/off
Selects HDTV scan mode