User's Manual

Innovator CU250ATD, 250 Watt Transmitter Tray Description
Instruction Manual, Rev. 0 13
30W Driver Tray Power Supplies
The 110VAC or 220VAC, needed to operate the tray, connects through the AC power
cord at J6, the power entry module located on the rear panel of the tray. An On/Off
10A/250VAC circuit breaker is part of the power entry module. With the circuit
breaker switched On, the (L) line input is wired to F1 a 20 Amp fuse for over current
protection. The AC lines are connected to terminal block TB1, which distributes the
AC to (A9 and A10) the two DC power supplies. Voltages for the operation of the
boards in the tray are generated by (A9) a +5VDC and ±12VDC power supply and
(A10) a +32VDC power supply. There are two varistors, mounted on TB1, connected
from the line input to neutral and to ground for surge protection. The AC also
connects to the (A11) fan mounted on the rear panel of the tray. The fan will run
when AC is applied to the tray. The +5VDC and ±12VDC outputs of the (A9) power
supply connects to the terminal block (TB2) that distributes the DC to the boards in
the tray. Some of the +5VDC and ±12VDC outputs connect directly to the 8 VSB
Demodulator and 8 VSB Modulator boards while the other outputs connect through
the transmitter’s Control Board to the IF Pre-corrector, the Digital Upconverter, the
ALC, the Amplifier Assembly and the Output Detector Boards. The +32VDC power
supply outputs connect to the (A8) Control Board, which then supplies the switched
+32VDC to the (A6) Amplifier Assembly.
30W Driver Tray LCD Display and Front Panel LED Indicators
Table 1: 30W Driver Tray LCD Display
DISPLAY FUNCTION
LCD
Provides a two-line readout of the input received channel, internal
functions, status, and fault conditions.
The front panel has seven pushbuttons for the two for the control of the transmitter
and five for control of the displayed menus.
Table 2: 30W Driver Tray Control Pushbuttons
PUSHBUTTON FUNCTION
OPR When pushed switches the transmitter to Operate.
STBY When pushed switches the transmitter to Standby.
ENTER Selects the changes made in the menus and submenus.
Left & Right Arrow Scrolls through the main menus
Up & Down Arrow Scrolls through submenus of the main menu when they are present.
Table 3: 30W Driver Tray Operate/Standby Indicators
LED FUNCTION
OPERATE/STANDBY
(Green/Amber)
A Green LED indicates that the system is in Operate. An Amber
LED indicates that the system is in Standby.
STATUS
(Green/Red/
Amber)
A Green LED indicates that the system is functioning normally. A
flashing Red LED indicates a fault is occurring at this time. An
Amber LED indicates a fault occurred in the past but the system
is now operating normally.