User's Manual

Innovator CU250ATD, 250 Watt Transmitter Front Panel Screens Description
Instruction Manual, Rev. 0 18
Table 13: Demodulator Channel Set Up Screen
The channel setup screen can be accessed by holding the left and right arrow keys down
until the setup screen is displayed. Once the user is in this menu, the channel plan can
be changed to either broadcast or cable by hitting the ENTER button. In addition, the
receive channel can be changed by hitting the up or down arrow to select the channel.
After the selections have been made, the user needs to depress the right or left arrow
again and then the display will ask “PUSH ENTER TO ACCEPT CHANGES”. If the ENTER
button is depressed, the changes will be accepted. If any other key is chosen, the
changes will not be made.
Table 14: Modulator Set Up Screen
This screen allows the user to select between an internal or external source in the
modulator. During the installation of the system, an off air signal may not be available
to the modulator, therefore the user can set the source to INTERNAL to generate an 8
VSB signal from the unit that can be used for set up. Once a receive signal is available,
the source should be set to EXTERNAL
This screen controls the operation of the linear equalizer. When set to ON, the
modulator applies linear correction to the IF output. When set to OFF, no
correction is applied to the IF.
This screen controls the operation of the nonlinear correction. When set to ON,
the modulator applies nonlinear correction to the IF output. When set to OFF, no
correction is applied to the IF.
Table 15: Fault Reset Menu
This screen allows the user to reset any previous faults that may have occurred in the
tray. When a fault is present in the tray, the status LED on the front panel will flash
RED as long as the fault is present. In addition, the menu will jump to the present fault
on the display and blink this fault continuously. When the fault goes away, the tray will
turn the status LED to AMBER to indicate that there was a fault and the menu will still
display the fault but it will not flash. This allows the user to know that there was a fault
and what type of fault occurred. To reset the indication of a previous fault, the user can
hit the ENTER button when this screen is visible and all of the faults will be cleared.
This completes the description of the menu screens for the transmitter.