Ritron AIERIT27-150, Руководство пользователя

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1
Getting Started
The LPA-Series receiver is designed for interface to existing wired Public Address
systems to allow PA announcements using VHF or UHF business band, FRS, or
MURS radios.
Major Benefit:
The LPA receiver allows all the wired speakers in a PA/Intercom system immediately accessible via a
2-way radio/base station/ etc. The LPA receiver can be connected to an existing wired system. An
LM and LPA receiver system can be used side-by-side on the same frequency.
What is The Difference b/w The LM-V150/U450 Receiver and The LPA-V150/U450 Receiver?
• The LM Receiver (#LM-V150/U450) has a built-in audio amplifier. The built-in audio amplifier allows the LM receiver
by itself to drive up to 2 Ritron PA horn speakers. The LM receiver and included PA Horn speaker is what we call a
stand-alone wireless PA system.
• LPA Receiver (#LPA-V150/U450) does not have a built-in PA amplifier. The LPA receiver is designed to be
connected to an existing PA/intercom system with its own PA amplifier and wired speakers.
• The LPA receiver does not include a back-up battery since it is merely a component of a larger system usually
powered by AC and its own battery back-up system.
Features/Benefits:
• Available in VHF (150-162 MHz) and UHF (450-470MHz) frequency bands. Provides compatibility with business
band 2-way radios, License-FREE VHF business band radios (MURS), Family Radio Service and GMRS radios.
• Provides interconnection to the Public Address amplifier through a high impedance, unbalanced AUX input
OR
a
600 Ω , balanced MIC input. Allows personnel to remain mobile while providing access via 2-way radio access to
existing PA speakers located throughout the facility.
• If the AUX input of the PA/Intercom amplifier is already used (ie: stereo tuner for background music) the LPA-
Series is installed in-between the audio source (stereo tuner) and the PA/Intercom amplifier. When the LPA-Series
receives a message the audio source is interrupted and the received message is sent to the PA/Intercom amplifier
instead.
• “Record and Play” allows use of radios in close proximity to PA speakers without feedback. The LPA-Series
records/buffers received messages up to 30 seconds in length, then plays them over the PA immediately after
releasing the PTT button on the radio.
• Easy “Plug and Play” installation.
• Programmable volume control adjusts
audio output level 5-99%. Allows custom
adjustment for most applications.
AUX OUT
connects to
the high impedance,
unbalanced AUX input
of the PA amplifier.
If used, a CD player,
tuner or tape player
connects to
AUX IN
600
Ω
BALANCED
connects to the
600 Ω balanced input
of the PA amplifier.
L R
AUX IN
HOT GND COLD
600
Ω
BALANCED
L R
AUX OUT
• Selective signaling includes QC, DQC,
Selcall, 2-Tone to provide an added layer
of access control to the PA system.
• Pre-announce tone (similar to existing PA
systems) with programmable on/off and
volume level.
• NOAA Weather Alert (VHF only).
• Field or PC programmable to frequencies
within the respective band (i.e. 150-165
MHz, 450-470 MHz).
• The LPA-Series is for interface only to an
existing PA system, it cannot drive a
loudspeaker by itself.
• The LPA-Series is for indoor use ONLY.
Section 1
Getting Started 1