Walabot (VSENSE) Environment Sensor
User Manual
Models:
VM20SQ, VS21CBT, VS40SBT
Draft version for FCC and CE evaluation
June 2018
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Contents
Introduction .................................................................................................................................................. 3
Features ........................................................................................................................................................ 3
VSENSE models ......................................................................................................................................... 3
Regulatory domains .................................................................................................................................. 5
Technology .................................................................................................................................................... 5
Block Diagram ............................................................................................................................................... 5
Interfaces ...................................................................................................................................................... 6
USB Interface and Powering Options ........................................................................................................ 6
Software Installation ..................................................................................................................................... 7
Mechanical placement .................................................................................................................................. 7
Safety ............................................................................................................................................................ 7
Legal Information .......................................................................................................................................... 7
Disclaimers ................................................................................................................................................ 7
Trademarks and patents ........................................................................................................................... 7
Regulatory Information ................................................................................................................................. 8
Regulatory Conformance .......................................................................................................................... 8
FCC regulatory statements ....................................................................................................................... 8
FCC ID Labels ............................................................................................................................................. 9
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Introduction
Capability \ Model
VM20SQ
VS21CBT
VS40SBT
Physical
Number of antennas
20
21
40
Board size
107 mm * 115 mm
72 mm * 140 mm
330 mm * 330 mm
External powering option
No
No
Yes
Antenna Type
Printed Dipole
Slot Embedded
Slot Embedded
Frequency ranges
3.3-10.3GHz
6.3-8.3GHz
6.3-8.3GHz
6.3-8.3GHz
Power supply
USB, 4.5-5.5V
USB, 4.5-5.5V
External, 5V
Walabot is a programmable 3D sensor that looks around using radio frequency technology that breaks
through known barriers, bringing highly sophisticated sensing capabilities to your fingertips. The Walabot
family of products is based on VSENSE/VMAKER family of sensor modules. The VSENSE family expands the
capabilities of the previous VMAKER family, primarily for larger-area indoor coverage and higher angular
resolution, and specifically useful for smart-home applications.
The devices under VSENSE family are UWB modules to be used with an external host, or to be
incorporated together with a host in a full device, serving as the sensing product.
Features
Three-dimensional radio-frequency based sensor, based on VAYYR2401-A3 System-on-Chip for signal
generation and recording. A MIMO array of linearly-polarized broadband antennas is used to obtain highresolution image.
The device is operated by a stand-alone host (PC, Smartphone, or other proprietary host), through a USB2 interface. The power is supplied either by the USB interface, or by an external power supply.
VSENSE models
VSENSE comes in several models. See the table below for details on the differences in the models.
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VM20SQ:
VS21CBT:
VS40SBT:
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Data
acquisition
RFIC
Host device
Environment
to be sensed
USB
VSENSE
Regulatory domains
VSENSE models have been manufactured in accordance with the regulatory domains in which they are to
be operated. Currently FCC (for operation in the US) models and CE (for operation in EU and other
countries using CE certification) models are available. If in doubt, consult your local experts before
ordering.
The FCC model is restricted in its operation to the 3.1-10.6 GHz range of frequencies.
Specifically, the VS21CBT model is restricted to 6.2-8.4GHz band.
The CE model is restricted to 6-8.5 GHz band and to stricter out-of-band emissions.
Technology
The VSENSE products are multi-antenna sensors that characterize the environment in the vicinity of the
sensor. It is done by collecting and analyzing propagation information between the antennas, which is
affected by the environment. The propagation response information is collected by VSENSE and processed
at the hosting device to obtain spatial information about the environment.
Block Diagram
The following figure presents a high-level block diagram of the VSENSE platform.
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Capability \ Model
VM20SQ
VS21CBT
VS40SBT
Connector types
μUSB
μUSB
40-pin BTB connector
USB-2\3 type-B
Power Supply Connector
μUSB
μUSB
40-pin BTB connector
USB-3 type-B
Power jack, diameter
2.5 / 6.3 mm
Voltage supply
5V +/-10%
5V +/-10%
5V
Power Consumption
0.4-0.9A
0.4-0.9A
0.8-1.2A
Interfaces
The module main interface is USB for communication and configuration.
USB Interface and Powering Options
The onboard USB 2.0 connector supports USB 2.0 in High-Speed mode (480Mbit). The power can be
provided either by
Connector and powering options:
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Software Installation
VSENSE is to be operated with dedicated SW per model, project and final product. In addition, software
installation depends on the platform and OS (Windows, Android etc). Some of the devices can be operated
using the Walabot API - check on the Walabot site (http://api.walabot.com/_install.html) for the latest
instructions and documentation.
If relevant, download the appropriate software to begin developing your own applications.
The software contains a driver through which the application software communicates with
VSENSE device.
The driver translates your commands into VSENSE’s actions.
Moreover, the driver is in charge of enforcing certain regulatory restrictions.
Be sure to communicate with the VSENSE device only through the driver using the provided API.
In general – the relevant SW and instructions will be given per device and project, and will appear at the
full product user manual.
Mechanical placement
The VSENSE are provided as bare boards or with an optional mechanical housing and case. The
mounting instructions shall be provided per specific module. In the case that a proprietary case is used,
make sure that the front cover is nonmetallic (e.g. plastic) and preferably thin (not exceeding 2 mm).
Safety
Legal Information
Disclaimers
Trademarks and patents
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Regulatory Information
Regulatory Conformance
The VSENSE device has been designed to be in compliance with the FCC regulations governing UWB hand-
held systems (Part 15.519) also known as “battery powered devices” or “mobile devices.” This means
that the device can be incorporated in a wide variety of products including educational robots, pipe
locators, breathing monitors, etc. Note that there are other applications which are specifically forbidden,
such as use of the devices in toys. See FCC Parts 15.519 and 15.521 for more details.
Certain models of the VSENSE device have been designed and tested to be in compliance with CE
requirements, and in particular to conform to ETSI standards EN 302 065-1, EN 301 489-33 and EN 301
489-1. In particular, the CE compliant devices are restricted to operation in the 6-8.5 GHz band. Make
sure that if you use the device outside US, that you order the appropriate model number.
FCC regulatory statements
This device complies with 47 CFR 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.
The user is cautioned that changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
This device may not be employed for the operation of toys. Operation onboard an aircraft, a ship or a
satellite is prohibited.
The use of this device mounted on outdoor structures, e.g., on the outside of a building or on a telephone
pole, or any fixed outdoors infrastructure is prohibited.
Moreover, the following statements apply:
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:
—Reorient or relocate the receiving antenna.
—Increase the separation between the equipment and receiver.
—Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
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—Consult the dealer or an experienced radio/TV technician for help.
FCC ID Labels
The VSENSE products have a FCC ID of 2AHIS-VSENSE. The FCC ID marking is found per specific model, in
general on the right front side of the printed circuit board:
Per device, the FCC ID will appear on the package of the product, or specified in the user-manual.
Please notice that if the FCC identification number is not visible when the module is installed inside
another device, then the outside of the device into which the module is installed must also display a label
referring to the enclosed module. This exterior label can use wording such as the following: “Contains
FCC ID: 2AHIS-VSENSE”
Instructions for the Integrator
The OEM integrator is responsible for ensuring that the end-user has no manual instruction to remove
or install module.
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