Lectrosonics SRc-941, Инструкция по эксплуатации

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SRc-941 Dual Receiver
LECTROSONICS, INC.
14
PCA900 Printed Circuit
Antenna
This antenna is typically used when the receiver is
mounted in a somewhat fixed position such as on a
sound cart. The pickup pattern is a circular horizontal
pattern with a subtle forward lobe due to the built-in
reflector. The antenna is connected with standard 50
ohm coaxial cable.
The antenna pattern is essentially the same as a dipole,
so mounting it with the elements oriented vertically
provides circular coverage.
A “ bendable ” mounting strap is included that allows
vertical orientation on a variety of surfaces. Several
other adapters are also available for temporary or fixed
installations.
The antenna pattern provides about 3.7 dB of gain,
which makes it ideal for use with a passive splitter to
feed two receivers. This is one example of using two
splitters to feed two receivers for either ratio or antenna
switching diversity.
Use Lectrosonics P/N 21770 BNC (F) to SMA (M) adapter;
Pomona P/N 4290
PCA900
COAXIAL
CABLE
ZSC24
SPLITTER
Tx
WEAK
SIGNAL
STRONG
SIGNAL
Tx
Tx
WEAK
SIGNAL
ANTENNA ORIENTATION
The PCA900 and whip antennas
both have a toroidal shaped pattern.
Viewed from the side, a cross section
of the pattern can be visualized.
The elements of both antennas
should be parallel to each other for
maximum signal strength. When they
are perpendicular or above one an-
other, the signal weakens significantly.