RCA LDK 8000 manual Optical filter selection, Variable gain, Symbol Gain

Chapter 5 - Operating instructions

Symbol		Gain
-	is always	-6 or -3dB
0	is always	0dB
+	can be set to	3, 6 or 9dB
++	can be set to	6, 9 or 12dB
+++	is always	12 dB

Variable gain

The gain switch can also be used to vary the gain continuously between its minimum and maximum value.

1.Hold the switch continuously in the up or down position until you see the value in the viewfinder change in steps of 0.1dB.

2.Release the switch when you reach the value you want.

3.Using the switch momentarily again sets the gain to the nearest standard value.

5.7.4 Optical filter selection

A neutral density filter and a special effect filter can be placed in the path of the optical signal to modify the incoming light. The filters are selected via the Filter switches at the top-front of the camera. These filters can be used, for example, to control depth of field or exposure levels.

The camera does not need colour optical filters to be able to white balance correctly. The range of the auto-white balance is so wide (from 2500K to 20000K) that there is never any need to use colour filters to obtain the correct white. Rotate the switches to move the optical filter wheels.

The outer (bigger) filter switch has four positions:

Position Filter

1Clear

2ND 1/4 filter (2 stops)

3ND 1/16 filter (4 stops)

4ND 1/64 filter (6 stops)

The inner (smaller) filter switch also has four positions:

Position Filter

1Clear

24-point star

36-point star

4Soft focus

The status of the filter wheels is displayed in the viewfinder for a few seconds. The ND/RE indicator in the viewfinder lights when an ND (Neutral Density) filter is selected.

54 LDK 8000 HDTV camera system User’s Guide (v3.0)