47 Applications for Healthcare
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Distribute Three Audio Sources to Multiple Locations Over UTP Cable
AN-2220
Description
Three styles of music are distributed to various rooms in this facility over CAT 5 cable by an RU‑TPS4A Format‑A Active Sender / Distributor. A D Series‑TPRX3A Source Selector and D Series‑PA3 Audio Amplifier installed in each room allow the occupants to listen to any of the three types of music provided or to listen to their own program material simply by plugging their MP3 player into the front‑panel input on the D‑PA3 amplifier. The front‑panel local input overrides the distributed audio.
School Cafetorium Room Combining System with Automatic Audio Leveling Compression
AN-2124
Description
This cafetorium can be used as one large room or as two smaller rooms formed by movable wall partitions. Each room has one mic and one mono or stereo line‑level input connection through a DS‑J3 input plate. EZ‑MCP1 Microphone Compressors provide consistent level and overload protection on the mic inputs. ST‑CL2 Compressor/Limiters provide the same benefits for the line inputs. The DS‑RCX2 Room Controls provide volume control in each room and allow selection of a common external source (typically background music). The RCX‑5C controls the audio system configuration, separating or combining the inputs and amplified audio to the speakers according to the room usage (one large room or two smaller rooms). The paging input overrides the audio in the entire cafetorium. Note: The RCX‑5C can be used for room combinations from two to five rooms. An HD‑PA35UA Audio Power Amplifier is used for each zone in this system to feed 70 Volt speakers. The HD‑PA35UA has an automatic sleep mode that shuts off the power amplifier when it is not in use. This offers significant energy savings for systems not operated by technical staff.
Zoned Paging for Multi-Story Office Building
AN-2167
Description
Installed UTP (unshielded CAT5, CAT6 or similar) cable is used to distribute facility‑wide paging to multiple floors or zones. The three paging sources for this multiple story building are fed to the RDL TX‑TPS3A Active Three Pair Sender. Its RJ45 output is fed to a twisted pair receiver on one floor, then in turn to additional receivers on the other two floors. By setting each TX‑TPR1A receiver to a different receive pair (A, B or C) each floor receives its own paging source. An All Call initiated at the main paging station will page all floors simultaneously. All connections use UTP terminated with RJ45 plugs. A TX‑TPR1A Active Single Pair Receiver on each floor delivers line‑level paging audio to the local amplifier. Each Format A twisted pair receiver bridges the UTP cable, allowing the source signal to continue on to multiple receivers. The receivers are powered from the TX‑TPS3A sender. (Note: If the total distances between the receivers exceeds the recommended cable length for the cable type used, one or more additional power supplies may be required. If needed, an additional power supply may be connected to any of the receiver modules. Consult the Format‑A twisted pair data, or RDL technical support for more information.)
Distribute Three Audio Sources to Multiple Locations Over UTP Cable
AN-2224
Description
Three styles of music are distributed to various rooms in this facility over CAT 5 cable by an RU‑TPS4A Format‑A Active Sender / Distributor. A D Series‑TPRX3A Source Selector, D Series‑PA3 Audio Amplifier and D SERIES‑SP1A 8 Ohm loudspeaker installed in each room allow the occupants to listen to any of the three types of music provided or to listen to their own program material simply by plugging their MP3 player into the front‑panel input on the D‑PA3 amplifier. The front‑panel local input overrides the distributed audio. The D‑SP1A loudspeaker provides rich detailed sound in a compact Decora compatible format.
AUDIO EQUALIZATION ENHANCES VOICE INTELLIGIBILITY
AN-2178
Description
The ST‑EQ3 3 Band Equalizer shown in this paging system tailors the system for voice‑band intelligibility. The midrange control boosts the voice band (200 Hz to 7 kHz). Low and High band controls attenuate audio frequencies outside of the voice band. The center frequency of each of the three bands may be adjusted by +/‑ 12 dB. Note: The ST‑EQ3 is a cost‑effective module to enhance a variety of systems including adjustable “loudness†equalization for music in PA applications.
Intercom System for Health Care Facility
AN-2057
Description
This intercom system allows a health care worker to communicate with a patient in the adjacent room while keeping both hands free for taking notes, using a computer, or accessing reference material. This system is set up with two intercom amplifiers that are both switchable by the health care worker. A foot switch provides a dry contract to control the directional flow of the audio. The ST‑IC1 intercom amplifiers can provide phantom power to condenser microphones and will directly drive a low impedance speaker.
Two P48 Condenser Microphones Mixed to a Single Recording Channel
AN-2204
Description
The two microphones in the Observation Room are mixed by an ST‑MX2 to a single MIC input on the recorder. The ST‑MPA48 provides phantom power to the two P48 condenser microphones. The ST‑MX2 provides individually selectable MIC or LINE inputs and offers both a MIC and LINE output. Inputs and outputs may each be configured balanced or unbalanced. The ST‑MPA48 provides 48 Vdc phantom voltage for P48 designated condenser microphones. The ST‑MPA48 is normally powered from a standard RDL 24 Vdc power supply or may be powered by any dc voltage from 10.5 volts to 26 volts.
Constant Voltage Distributed System
AN-2069
Description
The constant voltage speaker system makes it easy to distribute audio throughout a facility. Speakers can be placed above the listeners tapped for appropriate power levels totalling up to the total amplifier capacity. The TX‑J2 is used to provide a balanced mono signal from the projector’s unbalanced stereo output. For this conference room, the FP‑PA20A constant‑voltage (70 or 100 Volt) amplifier provides up to 20 Watts RMS to speakers located directly above the seating area. The integral compressor/limiter allows high average power levels of audio free from clipping and distortion. The FP‑PA20A can be used in applications that previously would have required amplifiers rated for much higher power levels.
In this example, the amplifier is feeding four speakers at equal power levels. The 70 Volt system makes it easy to distribute audio so that clear, intelligible audio is available for all listeners.
Wall-Mounted Bluetooth Input for Audio Player
AN-2253
Description
One Format‑A receiver is used to feed stereo audio to the power amplifier. Bluetooth audio is sent to the receiver over CATx cable with RJ45 connectors. The Bluetooth wall module is powered by the Format‑A receiver through the CATx cable.
Two Chair Dental Office
AN-2011
Description
The expandable SourceFlex audio system provides distribution of up to 8 audio sources to multiple locations (or zones) throughout a facility. Source selection and audio level for each zone are controlled by the SAS‑RC8. In this system, two sources are being distributed to two different patient rooms in a dental office. The stereo outputs from two separate audio sources (satellite receiver & MP3 player) are converted to balanced mono signals using two RDL TX‑J2s. The mono source signals are fed into the inputs of the SourceFlex Audio Input Chassis (SAS‑8i). Each room in the dental office has a wall control station (SAS‑RC8), which also provides power for a local speaker. Only one cable run is needed between each control station and the SAS‑8i Audio Input Chassis for control and electrical power.