Continental Refrigerator T19Plus US User manual

T19Plus US
User Manual
(STRLNK2P)

Table of Contents
1 Introduction ..........................................................................................................................................3
1.1 Purpose and Scope..............................................................................................................................3
1.2 Product Description ............................................................................................................................3
1.3 Power and Grounding.........................................................................................................................4
1.3.1 Power and Grounding..................................................................................................................4
1.3.2 Backup Battery (BUB)...................................................................................................................5
1.3.3 TCU Interface to External LTE/GSM Antennas.............................................................................5
1.3.4 TCU Interface External Fault Detection .......................................................................................5
1.4 WiFi .....................................................................................................................................................6
1.4.1 WiFi internal Antenna..................................................................................................................6
1.5 Connectors..........................................................................................................................................6
1.5.1 USB Connector.............................................................................................................................6
1.5.2 RF Connector................................................................................................................................7
1.5.3 BUB Connector.............................................................................................................................7
1.6 TCU Module Label...............................................................................................................................8
1.7 TCU Antenna Transmit Area ...............................................................................................................8
2 Vehicle Installation Guidelines..............................................................................................................9
3 Regulatory Compliance Notes.............................................................................................................10
4 External Antenna Requirements for use with T19Plus US Device......................................................11
5 Instructions to OEMS ..........................................................................................................................11

1 Introduction
The Telematics Control Unit (TCU) integrates an on-board cellular communication module with a WiFi
hotspot functionality and interacts with remote call/data centers to provide valuable services to the
vehicle customer.
1.1 Purpose and Scope
This document aims to describe the device operating principles and provide installation instruction to
OEM to insure safe use of the device.
1.2 Product Description
Subaru T19Plus US TCU is a proprietary Telecommunication Unit (TCU) designed and manufactured by
Continental Automotive. The TCU includes an integrated Network Access Device (NAD) that is also
designed and produced by Continental.
The TCU will be installed as a vehicle mounted wireless devices into Subaru vehicles during the OEM’s
factory assembly process and will not be accessible without use of special tools.
The TCU functionalities are accomplished by 2G/3G/4G technologies (Voice & Data) and defined service
feature.
The TCU comprises of the following subsystem components:
- Power supply
- Vehicle micro-controller (VuC)
- Network Access Device (NAD)
- Vehicle interface / communications
- Battery

1.3 Power and Grounding
The TCU is designed to operate via an unfiltered 5 A fused input from the vehicle battery: Vbatt
Ground return is through a single ground pin: GND
1.3.1 Power and Grounding
Operating voltage range is provided in the following table.
Table 3.1.1 TCU Operating Voltage Conditions
Voltage Range (Vdc)
Subsystem Operating Conditions
9.0 < VBATT < 16.0
Normal operation. TCU is fully functional
The VBATT connection (pin 17) shall support up to 2.5A current draw with 4.5A peaks. Vehicle wire
gauge must be chosen to support this current load with less than 0.5V drop between battery terminal
and this pin.
1.3.1.1 VBatt values out of normal range
The threshold voltage transition from Vehicle Battery to Backup Battery:
If the VBATT voltage transitions downward from >8.6V to <7.3V and BUB voltage is >2.0V, the DCM shall
begin using the BUB as a power source (i.e. switch to BUB), or, if no BUB is present, become
UNPOWERED.

The threshold voltage transition from Backup Battery to Vehicle Battery:
If the VBATT voltage transitions upward from <7.7V to >9.0V AND BUB voltage > 2.0V, the DCM shall
begin using the VBATT as a power source (i.e. switch to +B). The DCM shall continue to be OPERATING
ON VBATT until the conditions of DCM_02552 or DCM_00031 are met.
1.3.2 Backup Battery (BUB)
BUB refers to the Back-up Battery installed in the DCM; the DCM is shipped to Subaru with a BUB
installed. This battery can be used to power the DCM if the main vehicle battery is lost.
The BUB has no effect on DCM feature operation when DCM is running on MAIN BATTERY, i.e. when
MAIN BATTERY is at least 7V.
The BUB used on the DCM has the following characteristics
Technology: LiFePO4 (Lithium-Iron)
Rated Capacity: 1100mAh
Nominal Voltage: 3.2V
Temperature: Charge 0 to 45C, Discharge -30 to 60C.
Charging Voltage (Max): 3.81V
Minimum End of Discharge Voltage: 2.0V
Protection Circuit Required : No
1.3.3 TCU Interface to External LTE/GSM Antennas
The TCU has FAKRA connectors to which external LTE/GSM antennas may be connected.
1.3.4 TCU Interface External Fault Detection
For vehicles that are configured to use External LTE/GSM Antennas, the TCU has the capability to
determine if the External Antenna is connected and to log a fault if it determines that the External
Antenna is not connected (circuit open fault). It is also preferred that the TCU detect and log if the
External Antenna is shorted to ground.

1.4 WiFi
The TCU supports IEEE 802.11a/b/g/n/ac 2.4/5GHz WiFi.
1.4.1 WiFi internal Antenna
The TCU contains integrated pcb type F dual band antenna with the following maximum gain
Frequency MAX Gain
2442 MHz 3.14 dBi
5220 MHz 0.68 dBi
5785 MHz 1.94 dBi
1.5 Connectors
1.5.1 USB Connector
USB Connector –pin details
(View from mating side)
Pin No.
Terminal Name
Terminal Description
Input(I) / Output(O)
USB –pin 1
USB+
USB D+
I/O
USB –pin 2
USBS
USB Shield GND
GND
USB –pin 3
USBVCC
USB +5V Supply
PS
USB –pin 4
USB-
USB D-
I/O
2
4
1
3
Shield

1.5.2 RF Connector
RF Connector –pin details
(View from mating side)
Terminal Name
Terminal Description
Input(I) / Output(O)
Primary
TEL MAIN antenna signal
I
TEL MAIN antenna GND
GND
Secondary
TEL SUB antenna signal
I
TEL SUB antenna GND
GND
GPS
GNSS antenna signal
I
GNSS antenna GND
GND
1.5.3 BUB Connector
CONNECTOR
PIN N°
(New N proposal)
Signal Name
BUB connector
Molex 43650-0323
1
VBUB
2
BUB NTC
3
GND
M1
NC
M2
NC

1.6 TCU Module Label
The TCU labeling shall comply with the regulatory homologation compliance mark(s) that are
required by law in those countries. Art work for Subaru T19Plus US is shown below:
The module is marked with the Automotive OEM company trademark, engineering part number, and
supplier code.
1.7 TCU Antenna Transmit Area
For TCU variants that utilize an internal antenna, the module housing shall not be made of a metal, nor
contain a metal coating, that inhibits the transmission, or reception, of cellular signals in the areas
specified in the diagrams below.
Wi-Fi Antenna
The TCU is designed to allow the Wi-Fi antenna signal to propagate out of the top, bottom, and sides of
the module.

2 Vehicle Installation Guidelines
Normal operating conditions are between -30°C to +85°C.
The sheet metal cover is designed to be a heat sink. A gap between the heat sink and the
mounting surface is recommended to facilitate heat transfer out of the module. Exceptions can be
made if the module is mounted to a surface that can help facilitate heat transfer such as a large
aluminum body panel.
The device does not have sealed connectors.
It is designed to meet Class I water intrusion conditions (no drip test required), so it should not
be placed in area that can get wet.
Continental recommends that the automotive OEM uses the mating harness supplier’s
recommendations for the keep out zone around the connectors to ensure proper mating of each
connector.
Changes or modifications to this system by other than a facility authorized by Continental could
void authorization to use this equipment.
The device and its antennas must be installed to provide a separation distance of at least 25 cm
from all persons and must not be co-located or operate in conjunction with any other antenna or
transmitter.

3 Regulatory Compliance Notes
FCC: This device complies with Part 15, Part 22(H), Part 24(E) and Part 27 of the FCC Rules. The FCC ID
for this device is LHJ-STRLNK2P. It also contains a certified module with FCC ID: LHJ-BL28NA003. Part 15
(WiFi) operation is subject to the following two conditions:
1. This device may not cause harmful interference.
2. This device must accept any interference received, including interference that may cause
undesired operation.
Industry of Canada:
This device complies with Industry Canada’s license-exempt RSSs. Operation is subject to the following
two conditions:
(1) This device may not cause interference; and
(2) This device must accept any interference, including interference that may cause undesired operation
of the device.”
« Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts
de licence. L'exploitation est autorisée aux deux conditions suivantes :
(1) l'appareil ne doit pas produire de brouillage, et
(2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est
susceptible d'en compromettre le fonctionnement. »
This radio transmitter (2807E-STRLNK2P) has been approved by Industry Canada to operate with the
antenna types listed below with the maximum permissible gain indicated. Antenna types not included in
this list, having a gain greater than the maximum gain indicated for that type, are strictly prohibited for
use with this device.
« Le présent émetteur radio (2807E-STRLNK2P) a été approuvé par Industrie Canada pour fonctionner
avec les types d'antenne énumérés ci-dessous et ayant un gain admissible maximal. Les types d'antenne
non inclus dans cette liste, et dont le gain est supérieur au gain maximal indiqué, sont strictement
interdits pour l'exploitation de l'émetteur.».

4 External Antenna Requirements for use with T19Plus
US Device
The T19Plus US device is for use with external antennas ONLY, except for Wi-Fi which uses an internal
antenna.
For all LTE/WCDMA/GSM operating bands the maximum antenna gain including cable loss shall not
exceed the following values:
GSM 850: 1 dBi
GSM 1900: 2 dBi
WCDMA Band 2: 2 dBi
WCDMA Band 4: 2 dBi
WCDMA Band 5: 1 dBi
LTE Band 2: 2 dBi
LTE Band 4: 2 dBi
LTE Band 5: 1 dBi
LTE Band 7: 2 dBi
LTE Band 12: 2 dBi
5 Instructions to OEMS
Continental must instruct the automotive OEM and provide them to include the following information
into the car user’s manual (i.e. for the TCU):
1. End-users must be provided with transmitter/antenna installation requirements and operating
conditions for satisfying RF exposure compliance:
2. A separate section should clearly state “FCC RF Exposure requirements:”
3. Required operating conditions for end users.
4. The antenna used with this device must be installed to provide a separation distance of at least
25cm from all persons, and must not transmit simultaneously with any other transmitter, except
in accordance with FCC multi-transmitter product procedures.
5. The Maximum ERP/EIRP and maximum antenna gain required for compliance with Parts 15,
22H, 24E, and 27.
6. Clear instructions describing the other party’s responsibility to obtain station licensing.