Hitachi S-3000W Operating Instructions Manual page 23

Facility names and functions
48 Brightness control
Adjusts viewfinder screen brightness. Does not
affect camera output signal.
49 Contrast control
Adjusts viewfinder screen contrast. Does not
affect camera output signal.
50 Peaking control
Adjusts viewfinder video contours for easier focus
adjustment. Does not affect camera output
signal.
51 External tally switch
ON External tally lamp lights.
OFF External tally lamp does not light.
52 Camera connector
Connects viewfinder to camera.
53 Eyecup
54 Visibility adjust ring/knob
Adjust for best viewfinder image clarity according
to the operator.
55 Tightening ring
Secures eyecup after adjusting the vertical angle.
56 External tally indicator
When the external tally switch 51 is on, lights in
conjunction with the viewfinder screen tally.
57 Flip-up button
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