Enovate Medical Mobius 5 User manual

Mobius 5 User Manual
Enovate Medical Assembly Number: A0001923
1. Device Description:
The Enovate Medical A0001923 Mobius 5 is a 26Ah battery pack with a RF transceiver and
battery monitor. The circuit developed by Enovate Medical for the purposes of wireless BLE
communications using the proprietary BLE wireless communication standard. The Mobius 5
provides BLE wireless communications between itself and another BLE enabled device such as a
smartphone, tablet, BLE Beacon or other BLE-enabled device or network. It also provides power
to our cart ecosystem.
2. Component Description:
2.1: BLE SoC: nRF52832
The Nordic Semiconductor nRF52832 is built around a 32-bit ARM Cortex-M4F CPU Core
running at 64 MHz with 512kB of on-chip Flash memory and 64kB of RAM. This allows it to run
the full BLE stack in addition to running the application code. The nRF52832 includes many
microprocessor features including 12-bit A/D converters, UART, SPI and I2C communications
interfaces, timers, analog comparators, a temperature sensor and General Purpose I/O. The
nRF52832 operates from a supply voltage in the 1.7V –3.6V range. The nRF52832 IC handles all
of the Baseband functions for the BLE transmission including data formatting. Full 2.4 GHz
radio functionality is integrated into the nRF52832 including packet generation with DMA, CRC,
Whitening/Dewhitening, and full transmitter/receiver functionality. It also includes an on-chip
balun, RSSI with 1dB resolution and an internal power amplifier with support for FSK
modulation on the transmit side, and integrated digital demodulation on the receive side. Data
rates of 1 Mbit/s and 2 Mbit/s are supported. The nRF52832 IC generates its own internal
clocks and synthesizes the RF carrier signals from the 32 MHz external crystal.
2.2: 3-Axis Accelerometer: LIS2DE12
The ST Microelectronics LIS2DE12 is a low-power, 3-axis MEMS accelerometer with I2C and SPI
serial interfaces. The I2C interface is used in the Mobius 5 device. The LIS2DE12 has user-
selectable full-scale acceleration measurement ranges of +/- 2g, +/- 4g, +/- 8g and +/-16g. The
chip can also generate user-configurable interrupt signals by detecting inertial wake-up/free-fall
events. The chip operates from a 1.71V to 3.6V voltage supply.
2.3: Battery
The Mobius 5 provides power to our medical cart ecosystem. The battery also provides power
to the nRF52832. The battery pack is a 3S9P 281Wh pack.

2.4: Battery Management: BQ20Z95R
The Mobius 5 has a battery management integrated circuit that monitors voltage of the cells,
temperature, and current going in and out of the pack. It uses the three measurements to
estimate state of charge and verify the battery is operating within its specifications. The
BQ20Z95R also controls bypass for the cells to keep the pack in balance. The nRF52832 can talk
to the BQ20Z95R over I2C to get details on status of the battery.
3. Antenna Description:
The Mobius 5 contains a Molex 1461530300 flat patch antenna. The antenna is impedance-
matched to the RF output of the nRF52832 at 2.4 GHz with a 2450FM07A0029T matching
network. Maximum peak antenna gain of 2.5 dBi is calculated from measured e.i.r.p.
FCC (United States) Compliance Statement
The Mobius 5 does not have a user replaceable antenna. The only valid certification is with the
Molex 1461530300 patch antenna. Accessing the antenna connection and operating with a
different antenna is strictly prohibited.
Warning: Changes or modifications not expressly approved by Enovate Medical could void FCC
compliance and negate the authority to operate the product.
IC (Canada) Compliance Statement
The Mobius 5 does not have a user replaceable antenna. This radio transmitter has been
approved by Industry Canada to operate only with the Molex 1461530300 patch antenna.
Accessing the antenna connection and operating with a different antenna is strictly prohibited.
(RSS-GEN clause 8.3)
Label (example)
SERIAL #
SERIAL # BREAKDOWN
MODEL
DATE YYMM
SERIAL #
311761720010001
3117617
2001
0001

FCC REGULATORY DISCLOSURES
This device complies with Part 15 of the FCC’s 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 undesirable operation.
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions,
may cause harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment
off and on, the user is encouraged to try to correct the interference by one or more of the
following measures:
•Reorient or relocate the receiving antenna
•Increase the separation between the equipment and receiver
•Consult the dealer or an experienced radio/TV technician for help.
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled
environment. This device is intended for installation by Enovate Medical personnel only.
The FCC ID for this device is FCC ID: 2AQ9D-A0001923
INDUSTRY CANADA REGULATORY DISCLOSURES
INDUSTRY CANADA STATEMENT:
This device complies with Industry Canada license-exempt RSS standard(s). 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.
Cet appareil est conforme avec Industrie Canada exempts de licence standard RSS (s). L’operation est
soumise aux deux conditions suivantes: (1) cet appareil ne peut causer d’interferences, et (2) cet
appareil doit accepter route interference, y compris les interferences qui peuvent causer un mauvais
foncionnement de l’appareil.

INDUSTRY CANADA RADIATION EXPOSURE STATEMENT AND LIMITATIONS ON USE
This equipment complies with IC RSS-102 radiation exposure limits set forth for an uncontrolled
environment. This equipment should be installed and must not be co-located or operating in
conjunction with any other antenna or transmitter.
The Industry Canada certification number for this device is: 24335-A0001923