Technical Manual
PINEAPPLE TECHNOLOGY, INC.
UTX5KW-A Operating and Service Manual
P RFLD................................................................ Reads PA output power being returned from the load an
displayed as a percentage of forward power. Typical reading
would be < 5% indicated.
P AURAL............................................................. Reads the AURAL POWER component as a percentage of
forward power. Typical reading would be 10%.
AUX 1 & AUX 2 ................................................. not used in this conguration.
REFER TO SECTION VI.H. (page 37) FOR SCHEMATICS AND PARTS LIST.
E. REMOTE MONITOR AND CONTROL WITH ABS (AUXILIARY POWER SUPPLY)
This equipment is OPTIONAL and can be used to satisfy FCC remote control requirements.
The Remote Monitor is used to monitor the operational status of the transmitter and will allow the operator to turn
RF on or off and adjust power levels. The following items are monitored or controlled:
1. RF Power on/off function
2. Power output level monitor and adjust.
3. AC Line voltage status. With ABS you can be notied if there is a power failure at the side.
4. Various other custom options are available. Specify these at the time the transmitter is purchased and they
will be included if possible.
Remote monitoring requires a Phone line connection. Information can be accessed via a PC Terminal or via a
“VOICE COMMAND LINE.” Either option is standard with this system.
The Auxiliary power unit requires a battery connection. A common car battery (12 VDC) can be used with a
charger as an ABS. This will run the Monitor and provide access to transmitter status for several hours.
A manual for this equipment is provided by the Manufacturer and is included in the UTX5KW-A package
shipped with the transmitter. This manual is only included if this option was purchased for delivery with
the transmitter.
REFER TO INSTRUCTION MANUAL PROVIDED WITH THIS PACKAGE.
F. MODULATOR/UPCONVERTER
The heart of any TV Transmitter is the “MODULATOR”. This equipment receives the video and audio signals
as well as any control signals needed. The base band signals are converted to RF with an output on the desired
operating channel.
Detail operation of the Modulator with schematics and parts list is provided by the equipment manufacturer.
REFER TO INSTRUCTION MANUAL PROVIDED WITH THIS PACKAGE.
G. DRV100DC-3 DRIVER
The output power of the modulator is applied to the input of the DRV100DC-3 driver. This amplier increases the
drive level to that required for the MFA1KW to make rated power. The driver amplier requires 31 VDC to operate
and does not require any tuning or adjustments to change channels.
REFER TO SECTION VI.C. (page 17) FOR SCHEMATIC AND PARTS LIST.
V — THEORY OF OPERATION
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