2.3
ENCODER/CPU
**************************************************************************
NOTE: If Nurse Call System interface is not
required, delete references to Nurse Call System.
**************************************************************************
Encoder shall conform to the requirements of EIA 374-A. Encoder shall be
modular in construction utilizing plug-in modules and stored program
control for system features, receiver address and page grouping
programming, and automatic supervision of system, cable or transmitter
failure. Encoder shall provide all necessary programming, memory,
processing, encoding, call prioritization, nurse call interface and self
checking diagnostics for the radio paging system. Wired capacity shall be
at least [8] [_____] data input lines capable of operating simultaneously.
Display message storage shall be provided for at least [16] [_____]
messages of up to [32] [_____] characters per message. Voice message
storage shall be provided for a [30] [_____]-second code blue voice
message. Stored Code Blue message shall be processed to the transmitter on
a top priority basis. Interruption or loss of ac power to the system shall
not cause loss of or change to stored programs. Nurse call system
interface shall be in compliance with UL 1069.
2.4
TELEPHONE INTERFACE COUPLER
Telephone interface coupler shall contain the necessary circuitry to
provide proper paging access for the telephone system. The unit shall
provide automatic disconnect upon paging party hang-up, back-up timer to
automatically disconnect after an adjustable period of [15] [_____] to [45]
[_____] seconds, automatic disconnect or busy signal for override of higher
priority signal, and balanced 600 ohm output.
2.5
TRANSMITTER
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NOTE: Radio paging systems are available in very
high frequency (VHF) and ultra high frequency (UHF)
range 30 MHz to 900 MHz. VHF systems are generally
wide-area systems whereas UHF systems are usually
onsite systems as called for by this specification.
Systems that interface with Nurse Call Systems are
always UHF and generally have a transmitting range
of 40.2 km (25 miles) line-of-sight. Consult Base
Frequency Coordinator for guidance in the selection
of the frequency.
RF power output is dependent upon required range of
transmission, contour of territory covered, antenna
characteristics and antenna mounting height.
Manufacturer can assist in determining proper power
output and parameters of the transmitter.
**************************************************************************
Transmitter shall conform to the requirements of EIA ANSI/TIA/EIA-603B, EIA
374-A, and to the following:
a.
Frequency: [_____] [MHz] (Contractor shall contact the
Contracting Officer to obtain the operating frequency of the
system).
SECTION 16755A
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