Xirgo XT1520-1 Series User manual

XT1520-1 Product Manual
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CONFIDENTIAL AND PROPRIETARY
XT1520-1
Product Manual
Firmware Version: NV11.1125AA1
Revised August 02, 2021

XT1520-1 Product Manual
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CONFIDENTIAL AND PROPRIETARY
TABLE OF CONTENTS
1. Functional Description 3
1.1. Overview 3
1.2. Mechanical 3
2. General Operation 4
3. Installation 5
4. Bluetooth (BLE) 6
4.1. UID Frame 6
4.2. TLM Frame 6
5. Bluetooth protocol Diagram 7
6. Regulatory Statements 8
6.1. FCC 8
6.2. IC 9
6.3. CE 9

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CONFIDENTIAL AND PROPRIETARY
1. FUNCTIONAL DESCRIPTION
1.1. OVERVIEW
The XT1520-1 series are Bluetooth beacons with a single chip Bluetooth 5 + ARM. The beacons allow the user to
quickly identify a cart's location if it is within proximity of an XT49xx to determine whether a cart is at a
distribution center or en route. Each device broadcasts a UID frame payload with a MAC address to an XT49xx at
a 1 Hz frequency. This frequency, along with the namespace, are only configurable at the factory. The device is
expected to last the duration of the cart's life.
1.2. MECHANICAL
Mechanical
Dimensions 4.0 x 2.2 x 1.3 in (10.16 x 5.59 x 3.30 cm)
Weight 3.8 oz
Case Material PC+PBT
IP Rating IP67
Vibration Mil. Std. 202G, SAE J1455

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CONFIDENTIAL AND PROPRIETARY
2. GENERAL OPERATION
The XT1520-1 attaches to Amazon carts and is used in conjunction with an XT49xx mounted on an Amazon
trailer. The XT49xx periodically captures the unique device IDs at a configurable rate of all beacons in range. The
XT49xx then sends the information over the cellular network, which is received by AWS.

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CONFIDENTIAL AND PROPRIETARY
3. INSTALLATION
The XT1520-1 offers two different means of mounting: zip ties, or 3M VHB tape. The back of the device casing is
flat so the VHB tape can be adhered. The holes zip ties are indicated below.

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CONFIDENTIAL AND PROPRIETARY
4. BLUETOOTH (BLE)
The XT1520-1 uses Bluetooth 5 network, utilizing the Eddystone(TM) message protocol from Google. This
protocol has four frame types: UID, URL, TLM, and EID; however, URLand EIDframes are not utilized in this
application. In depth information on Eddystone(TM) can be found here:
https://developers.google.com/beacons/eddystone
4.1. UID FRAME
This frame type is very important in the XT15 as it comprises the primary functionality of the device. The UID is a
unique 16-byte ID with a 10-byte namespace and 6-byte instance ID. The namespace portion is used to group
sets of XT15s and the instance ID is used to identify individual devices.
UIDFrame
Frame Type Power at 1 M Namespace ID Instance ID RFU
1 byte 1 byte 10 bytes 6 bytes 2 bytes
4.2. TLM FRAME
The TLM frame type is used to display telemetry data about the operations of the clients in use. It can be used to
monitor beacons in the field. The frame is paired with an identifier frame because TLMhas no beacon ID. This
frame broadcasts at a 1/10 Hz frequency.
TLMFrame
Frame Type Version Battery
Voltage (mV)
Beacon
Temperature
ADV PDU Count
Since Boot
Time Since Boot
(100ms incraments
1 byte 1 byte 2 bytes 2 bytes 4 bytes 4 bytes

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CONFIDENTIAL AND PROPRIETARY
5. BLUETOOTH PROTOCOL DIAGRAM

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CONFIDENTIAL AND PROPRIETARY
6. REGULATORY STATEMENTS
6.1. FCC
This equipment with FCC-ID: GKM-XT1520-1 and IC-ID: 10281A-XT15201, Model: XT1520-1 is subject to the
Federal Communications Commission (FCC) and Industry Canada (IC) rules.
NOTICE:
Changes or modifications not expressly approved by the party responsible for compliance could void the user's
authority to operate the equipment.
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 made to this equipment not expressly approved by Xirgo Technologies, LLC may void
the FCC authorization to operate this equipment.
NOTE: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:
lReorient or relocate the receiving antenna.
lIncrease the separation between the equipment and receiver.
lConnect the equipment into an outlet on a circuit different from that to which the receiver is connected.
lConsult the dealer or an experienced radio/TV technician for help.
Radio frequency radiation exposure Information:
This equipment, XT1520-1, complies with FCC and ISED radiation exposure limits set forth for an uncontrolled
environment. This equipment must be installed and operated with minimum distance of 20cm between the
XT1520-1 and your body.

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CONFIDENTIAL AND PROPRIETARY
6.2. IC
Antenna Statement
Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and
maximum (or lesser) gain approved for the transmitter by Industry Canada. To reduce potential radio
interference to other users, the antenna type and its gain should be so chosen that the equivalent isotropically
radiated power (e.i.r.p.) is not more than that necessary for successful communication.
Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une
antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le
but de réduire les risques de brouillage radioélectrique à l'intention des autres utilisateurs, il faut choisir le type
d'antenne et son gain de sorte que la puissance isotrope rayonnée équivalente (p.i.r.e.) ne dépasse pas
l'intensité nécessaire à l'établissement d'une communication satisfaisante.
Licence exempt
This device complies with Industry Canada licence-exempt RSS standard(s). 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'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en
compromettre le fonctionnement.
6.3. CE
The DOC (Declaration of Conformity) is either included in the packaging or can be found at the following link:
www.xirgotech.com

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CONFIDENTIAL AND PROPRIETARY
WARNING: This product can expose you to chemicals including Nickel (Metallic), which is known
to the State of California to cause cancer and Bisphenol A (BPA), which is known to
the State of California to cause birth defects or other reproductive harm.
For more information go to www.P65Warnings.ca.gov