Museum Technology Source CC-1000 Closed Caption Displays User Manual
Page 3
Setting Brightness:
A knob is provided on the rear panel to adjust the brightness. It is recommended that the
maximum brightness setting only be used when ambient light conditions call for it. If desired, a
temporary connection between pins 3 and 4 will cause a test message to appear on the display.
Remote On-Off
The CC- may be disabled by connecting a toggle switch across pins 1 and 2 of the rear
panel terminal block. When the switch is open (no connection) the CC- functions normally.
When the switch is closed (connection made) the display will switch to CC-3. Since CC-3 is
only used is special instances, the effect will be to turn off the display. When the switch is
next opened the display will be reactivated. There may be a pause of several seconds
between turning the display back on and the appearance of text on the display. This is
because the CC- will wait until a complete new caption is loaded prior to turning on the dis-
play. This is to prevent a partial caption from being displayed.
The voltage across the switch terminals is 5 volts DC, and the current is approximately 10
mA. The switch may be located some distance ( 200 feet) from the CC display board.