VT5F9MN0006/07
RF Data Sheet
FEATURES
鈥?Stabilized, compact, and lightweight design.
鈥?A board-in type mountable directly on the mother
board of the set.
鈥?Bus noise elimination through the use of a built-in
white clip circuit.
鈥?Usable for many purposes such as BS, CATV, etc.,
in addition to VCR and laser disc.
RF Modulator
appear on the RF output when the modulator portion is
not operating, allowing for transparent operation with
other household video appliances. When the modula-
tor is in use, the modulated signal is seen at output and
the antenna input spectrum is suppressed.
A tuner-out port is included in the VT5F9MN0007 as
this unit is intended for applications where a local tuner
capability is desired, such as in a combine VCR prod-
uct. The tuner-out port is a sample of the antenna input
spectrum and is always active. The modulator may also
be used in satellite television applications. The output
channel may be selected between NTSC channels 3
and 4, as designated in North America. The modulator
operates from a +5 V source.
FUNCTIONAL DESCRIPTION
This modulator is designed for operation in NTSC-M
systems. An RF antenna input is provided by an F
Female connector and the combined RF output is pro-
vided on an F connector. The antenna input signals
TUNER
OUT
ANTENNA
IN
DISTRIBUTOR
RF SW
RF SW
HIGH
PASS FILTER
TV
OUT
VIDEO
IN
VIDEO
CLAMPER
WHITE
CLIPPER
MODULATOR
BANDPASS
FILTER
SAW
RESONATOR
CH SW
RF CARRIER
OSC
AMP
AUDIO
IN
PRE-
EMPHASIS
FM
MODULATOR
TANK
(4.5 MHz)
MOD20-3
Figure 1. Block Diagram
RF Data Sheet
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