VT5F9MN0006 Datasheet, PDF (1/5 Pages) Sharp Electrionic Components – RF Data Sheet RF Modulator

RF Data Sheet
VT5F9MN0006/07
RF Modulator
FEATURES
• Stabilized, compact, and lightweight design.
• A board-in type mountable directly on the mother
board of the set.
• Bus noise elimination through the use of a built-in
white clip circuit.
• Usable for many purposes such as BS, CATV, etc.,
in addition to VCR and laser disc.
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
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.
ANTENNA
IN
DISTRIBUTOR
RF SW
HIGH
PASS FILTER
TUNER
OUT
TV
OUT
RF SW
VIDEO
IN
VIDEO
CLAMPER
WHITE
CLIPPER
MODULATOR
BANDPASS
FILTER
AUDIO
IN
SAW
RESONATOR
PRE-
EMPHASIS
CH SW
RF CARRIER
OSC
AMP
FM
MODULATOR
TANK
(4.5 MHz)
Figure 1. Block Diagram
MOD20-3
RF Data Sheet
1