Life Sensing Instruments, Inc. | CONFIDENTIAL Pg. 1
NEXUS TELEMETRY RECEIVER
Operator’s Manual
Life Sensing Instruments, Inc.
December 15, 2025
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Nexus Telemetry Receiver Overview
The Nexus Telemetry Receiver is a component of a patient monitoring system designed to enable bi-directional
wireless communication between telemetry patient-worn transmitters and a Central Station computer. Upon
receiving the telemetry signals from the transmitters via the WMTS transmission band, the Nexus forwards the data
over a wired USB connection to the Central Station computer, which hosts specialized software for displaying and
analyzing vital sign data. The Nexus can be powered by an external AC power adapter or by using Power Over
Ethernet (PoE).
The receiver operates in conjunction with an external antenna system to establish wireless links with patient-worn
telemetry transmitters. Theses transmitters collect vital sign data and transmit the data via the 608 – 614, 1395 –
1400, and 1427 – 1432 MHz Wireless Medical Telemetry Service (WMTS) bands to the receiver. The Nexus
supports downstream communication back to the transmitters over the ISM band (910–920 MHz), enabling limited
bi-directional control or configuration updates where applicable.
External Ports
The NEXUS has (4) ports at the rear of the housing.
• ETHERNET: This port can be used for PoE
(optional).
• USB: This port is used for communication between
the Central Station computer and the Nexus.
• POWER: This port is used to power the device using an external AC power adapter.
• BNC: This port is used to connect to the antenna using LMR-240 cable.
LED Status Indicators
The NEXUS has (4) LED lights on the front of the housing.
• Green LED (RIGHT) : Power: The LED indicates
that the NEXUS is powered on.
• Green LED: Firmware: The LED will blink to indicate that the firmware is running.
• Yellow LED: Communication: The LED will blink as data is received from the transmitters.
• Red LED: Fault: The Red LED indicates a fault condition. When the Red LED is displayed, the Nexus
cannot be used.
Instructions for Use
The Nexus Telemetry Receiver requires no user interaction for use. There are no configuration requirements.
Connecting the USB Cable
Insert the “A” end of the USB A to B cable into the port labeled “Data” on the back of the Nexus. Insert the “B” end
of the USB A to B cable into the port labeled “Nexus” on the back of the Central Station computer.
Powering on the Nexus (AC Power Adapter)
Insert the barrel jack connector on the AC power adapter into the port labeled “Power” on the back of the Nexus.
Plug the AC power adapter’s power cord into the electrical outlet. The Nexus will automatically power on without
user interaction. The Nexus will transmit on the ISM band automatically upon powering on.
Powering on the Nexus (POE)
Insert the Ethernet connector from the PoE-enabled network switch or PoE injector into the port labeled “Ethernet”
on the back of the Nexus. The Nexus will automatically power on when a valid PoE connection is established and
will begin transmitting on the ISM band without user interaction.
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Antenna and Professional Installation Information
Antenna Installation and Authorized Use:
The Nexus Telemetry Receiver (Model NEXUS, FCC ID: OF8-NEX1) is designed for operation only with the
antenna(s) supplied or expressly approved by Life Sensing Instruments, Inc.
Authorized Antenna:
• Manufacturer: LSI
• Type: PIFA (50 Ω, BNC male connector)
• Gain: 1.8 dBi
• Cable: LMR-240
Substitution of other antennas, cables, or connectors is not permitted without the express written approval of Life
Sensing Instruments, Inc. Use of unauthorized antennas may void the equipment authorization and the user’s
authority to operate the device.
Professional Installation Requirement:
Installation, configuration, and range validation must be performed only by trained personnel authorized by Life
Sensing Instruments, Inc.
The professional installer shall:
1. Mount the antenna in accordance with the site plan and coverage documentation.
2. Connect the Nexus Telemetry Receiver and antenna with approved components without any
modifications to components (BNC connector, LMR-240 cable, and antenna)
3. Verify field strength coverage and log the installation record in accordance with procedures.
The Nexus Telemetry Receiver is not intended for consumer or residential installation.
Support Services
The authorized support provider for the Nexus Telemetry Receiver is Life Systems International (LSI), located in
Charlotte, NC. Support services include hardware support available through the Repair Depot. To learn more about
the support services offered by LSI, call 800-846-1279 x1.
Repair Depot
For repair services of the Nexus Telemetry Receiver, contact the authorized support provider:
LSI
Attn: Repair Depot
2102 Cambridge Beltway Dr., Ste. A
Charlotte, NC 28273
800-846-1279 x1
support@lsi-medical.com
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Nexus Telemetry Receiver Specifications
MECHANICAL
PHYSICAL DIMENSIONS (WxHxD) 6.85" W X 1.44" x H 8.26" D
WEIGHT 1.75 lbs
ANTENNA CONNECTION
IMPEDENCE 50 OHM
CONNECTOR BNC, FEMALE
DATA
USB B - PROTOCOL USB 2.0
USB B - TRANSMISSION RATE BAUD RATE: 921600 / BANDWIDTH: 75 KBPS
USB B - CONNECTOR TYPE USB B
ELECTRICAL
INPUT VOLTAGE - AC POWER 100 TO 240 VAC
FREQUENCY - AC POWER 50Hz/60Hz
WIRELESS
MODULATION 4GFSK (WMTS), FSK 150 kHz (ISM)
FREQUENCY BAND (RECEIVING) 608.00-614.00, 1395.00-1400.00, 1427.00-1432.00 MHz
FREQUENCY BAND (TRANSMIT) 910.00 – 920.00 MHz
CHANNEL SPACING 75 kHz
Antenna Specifications
MECHANICAL
DIMENSIONS L X W X H 7.1” L x 4.2” W x 1” H
CONNECTOR BNC (THROUGH HOLE)
COAX CABLE LMR-240
MOUNT CEILING
ELECTRICAL
GAIN (PEAK) 1.8 dBi
VSWR (MAX) < 2.0:1
POLARIZATION LINEAR (HORIZONTAL ORIENTATION PREFERRED)
IMPEDANCE 50 OHM
TYPE PIFA (PLANAR INVERTED-F ANTENNA)
INDOOR/OUTDOOR INDOOR USE ONLY
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FCC Information
Tested to Comply with FCC Standards Responsible Party:
Product Name: Nexus Telemetry Receiver Life Sensing Instruments, Inc.
Model Number: NEXUS 2102-A1 Cambridge Beltway Dr.
FCC ID: OF8-NEX1 Charlotte, NC 28273
800-624-2732
Life Sensing Instruments, Inc. declares that the above device complies with the requirements of the Federal
Communications Commission.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
1) this device may not cause harmful interference, and
2) this device must accept any interference received, including interference that may cause undesired
operation.
Changes or modifications not expressly approved by Life Sensing Instruments, Inc. could void the user’s authority
to operate the equipment.
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15
of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when
the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interference at his own expense.
