User's Manual

Innovator CHV400BTD ATSC Transmitter Unpacking and Installation
Technical Manual, Rev. 0 16
In Translator (BRD) systems there is a SMPTE-310 loop-thru from the output of the
Demodulator Board at J4, mounted on the rear panel of the transmitter or driver tray, to
the input to the Modulator Board at J5, mounted on the rear panel of the transmitter or
driver tray. There is a jumper installed from J4 to J5. To feed SMPTE-310 directly to the
Modulator Board, remove the jumper and insert SMPTE-310 into J5. This is only used in
Translator (BRD) systems not Transmitter (BTD) systems.
The digital RF ON Channel output of the CHV200B and the driver tray for CHV400B and
higher power systems is at J9 the 50Ω “N” connector RF output jack located on the rear
panel. In the CHV200B system the output of the tray at J9 connects to the low pass, digital
mask filter and then to the antenna for your system. In CHV400B and higher power
systems the output of the driver tray at J9 is connected to J1 the 50 Ohm “N” connector RF
input jack located on the rear panel of the 500 Watt, 750 Watt, 1 kW amplifier tray or to a
splitter in multiple amplifier systems. In CHV200B systems, check that the system power
metering interface cable is connected from J11 the 9 position “D” connector located on the
rear panel of the driver tray to J4 the 9 position “D” connector located on the rear panel of
the amplifier tray. This cable provides the control, status and operating parameters of the
amplifier tray to the driver tray. In CHV1000B or higher power systems, the output of the
driver tray is split and connected to J1 the “N” type connector RF input jack on the amplifier
trays. Check that the system power metering interface cable is connected from J11 the 9
position “D” connector located on the rear panel of the driver tray to J9 the 9 position “D”
connector located on the System Metering Board. Also check that the serial connection is
cabled from the RJ-45 connector J13 on the driver tray to the RJ-45 connector J1 on the
system metering board. The system metering board provides serial RJ-45 connections at J2
and J5 that are cabled to the RJ-45 serial port J5 on the rear panel of the amplifier trays.
These cables provide the control, status and operating parameters of the amplifier trays to
the driver tray through the System Metering Board.
The digital RF ON Channel output of the amplifier tray is at J2 the 50Ω “7/16” (1.1cm) Din
connector RF output jack located on the rear panel that connects directly to the digital mask
filter, the low pass filter and then to the antenna for your system in single amplifier
systems. In multiple amplifier tray systems the outputs of the trays connect to a combiner
and then the digital mask filter, the low pass mask filter, the output coupler and finally to
the antenna for your system. The output coupler provides a forward and a reflected power
sample that are cabled to the System Metering Board at J8 reflected and J3 forward. Also
connected to the system metering board at J10-6 & 9, is the output of the overtemperature
switch mounted to the reject load that is used as the reject interlock by the system. The
samples and interlock are fed through J9 on the system metering board to J11 on the driver
tray.
This completes the connections of the system.