Plus 2112 User manual

PLUS Modular Tag
Model 2112
Circuit Implementation
Manual

Model 2112 Modular Tag Manual
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Contents
Regulatory & Legal Information ............................................................................................................................ 3
Safety Information .................................................................................................................................................. 4
Revisions to this Document .................................................................................................................................... 5
Introduction............................................................................................................................................................. 6
Overview................................................................................................................................................................. 7
Specifications.......................................................................................................................................................... 8
Mounting................................................................................................................................................................. 9
Identification ........................................................................................................................................................... 9
FCC Section 15.212 Compliance.......................................................................................................................... 10
Example ................................................................................................................................................................ 15
End Product ID Recommended Format................................................................................................................ 16

Model 2112 Modular Tag Manual
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Regulatory & Legal Information
Copyright © PLUS ® Location Systems. No part of this manual may be copied or
reproduced without prior written consent from PLUS ® Location Systems.
isclaimer
The information in this document is subject to change without notice. PLUS ®
Location Ser ices (“PLUS”) assumes no responsibility for inaccuracies or
omissions and specifically disclaims any liabilities, losses, or risks, personal or
otherwise, incurred as a consequence, directly or indirectly, of the use or
application of any of the contents of this document. For the latest
documentation, contact your local supplier or isit us online at
www.pluslocation.com.
Trademarks &
Patents
PLUS, and the PLUS logo are trademarks of PLUS ® Location Systems.
Other trademarks and trade names used in this manual are the property of the
manufacturers or endors of the respecti e products.
Intended Use This document examines the PLUS 2112 Modular Tag. This document is
intended for PLUS Location Systems internal use only.
FCC Compliance
U.S. Operation: This de ice complies with Part 15 of the FCC Rules. Operation is
subject to the following conditions: (1) this de ice may not cause harmful
interference, and (2) this de ice must accept any interference recei ed,
including interference that may cause undesired operation. (3) Operation on
board an aircraft or a satellite is prohibited. (4) De ices operating under this
section may not be employed for the operation of toys. (5) Except for
operation onboard a ship or a terrestrial transportation ehicle, the use of a
fixed outdoor infrastructure is prohibited. A fixed infrastructure includes
antennas mounted on outdoor structures, e.g., antennas mounted on the
outside of a building or on a telephone pole. This outdoor infrastructure
prohibition applies to intentional ultra-wideband (UWB) emitters.
Operation in disregard of these conditions is a iolation of 47 U.S.C. 301 and
could subject the operator to serious legal penalties. Disassembling or
modifying the unit will oid both FCC compliance and PLUS ® Location Systems
warranty pro isions.
Manufacturer
Contact Information
HQ and Regulatory Responsibility:
PLUS Location Systems USA, LLC
6767 Old Madison Pike NW, Suite 310
Hunts ille, AL 35806
www.pluslocation.com

Model 2112 Modular Tag Manual
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Safety Information
Read and follow all instructions before using the Model 2112 Tag when it has been incorporated into an end
product. The following are typical safety instructions for a PLUS Tag that would apply to an end product using
the 2112 Module.
•Do not use the Tag if it has been damaged.
•Do not install in en ironments that exceed temperature and humidity requirements.
•Do not lea e the Tag on a heat source.
•Ne er open the case on the Tag: There are no user ser iceable parts or replaceable parts inside the
enclosure.

Model 2112 Modular Tag Manual
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Revisions to this ocument
Version Comments Release Date
Rev A Initial release 02/10/2016
Rev B Revise to rev B 03/15/2016

Model 2112 Modular Tag Manual
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Introduction
The Plus Model 2112 Modular Tag is a complete PLUS UWB Tag design for integration into a PLUS printed
wiring assembly (PWA) and enclosure, and connected to a power source. It has the following features:
•Runs from a 3 olt DC power source (can operate down to 2 olts DC)
•Will transmit a UWB packet at a rate set at time of manufacture. Rate can be set to 1Hz, 6Hz, 8Hz,
10Hz, 15Hz or 20Hz.
•Meets FCC Section 15.212, rules concerning single modular transmitters.
•Certified to comply with FCC Part 15.519
• This Module is limited to OEM installation Only.
Formatted: Font: (Default) +Body (Calibri), 12 pt

Model 2112 Modular Tag Manual
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Overview
Background
Tag tracking is accomplished by analyzing time-differences-of-arri al (TDOAs) of tag transmissions. When a tag
transmits a packet, PLUS ® Sensors that successfully recei e the packet will send out information concerning
the tag packet, including a precise timestamp. The difference in the timestamp between sensors gi es the
TDOA for that sensor pair/tag combination. At least three sensors must hear a tag in order to determine a
alid position for that tag.
Model 2112 Modular Tag
The 2112 Modular Tag allows the implementation of a controlled and defined UWB transmitter onto a PWA,
pro ided the specifications in the PLUS documentation with regards to PWB layout, board material,
component sources and alues, and assembly of the 2112 Tag circuitry are followed.
The 2112 Tag is a small transmit only de ice with an acti e transmit duty cycle of less than 0.0026%. The Tag
has one integrated antenna optimized for ertical applications. The data packets include a tag identification
code, status information, and time of arri al data. The FCC ID is ZEH0116.
As mentioned in the introduction, the data packet rate can be set at manufacture to 1Hz, 6Hz, 8Hz, 10Hz,
15Hz, or 20Hz. This is done by selection of the alue of one part and is identified in a table in the schematic.
PLUS Documentation:
The controlling PLUS documentation for the 2112 Modular Tag is:
•300-0268A, PWB, 2112 TAG Module
•200-0275A PWA, 2112 TAG Module
The PWB document controls the layout of the 2112Tag printed circuit board, hence the antenna and
transmitter, and it defines the printed circuit board parameters including board material and thickness.
The PWA document defines the connections of the 2112 Tag board circuitry and the AVL for all the
components. The PWA also contains the block diagram for the 2112 Tag.

Model 2112 Modular Tag Manual
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Specifications
Housing Material Housing design aries to meet end user requirements. Housing material will
ary and may include ABS, Polycarbonate, HDPE, Silicone, or Rubber.
Power Source 3V DC (can work down to 2V DC)
Ingress Protection Dependent on User enclosure design
Compliance
FCC Part 15
15.519(c) / 15.209
15.519(d)
15.519(b)
15.519(e)
EU Standard
EN 302 065-1 V1.3.1 (2013-06)
EN 302 065-1 V1.3.1 (2013-06)
EN 301 489-33 1.1.1
EN 301 489-1 1.9.2
FCC ID ZEH0116
RoHS
Temperature
Typical Operating: -20⁰C to +55⁰C
Typical Storage: -30⁰C to +60⁰C
Relative Humidity Up to 95% non-condensing
Model Number 2112

Model 2112 Modular Tag Manual
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Mounting
Depending on end user requirements, mounting methods will ary.
Identification
Per FCC Section 15.212: The 2112 Tag FCC identification (ID) will be printed ia the silkscreen on the TOP
side of the board.
Figure 1-1 below shows the FCC ID as it appears on the bottom of the board right abo e the PLUS copyright
and PWB identification:
FOR THE USER IMPLEMENTATION OF THE 2112 TAG:
Per FCC Section 15.212: The FCC identification (ID) information for the 2112 Modular Tag must be isible on
the End product. The information must include product model number and the statement “CONTAINS FCC ID
ZEH0116”. Other information such as a unique serial number is encouraged but is not a requirement. PLUS
document 320-0315 pro ides a template for required information and layout for the End Product ID label.
Figure 1
-
1

Model 2112 Modular Tag Manual
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FCC Section 15.212 Compliance
The PLUS 2112 Tag complies with FCC Section 15.212 rules concerning single modular transmitters in the
following:
15.212 (a)
REQUIREMENT:
“Single modular transmitters consist of a completely self-contained radiofrequency transmitter de ice
that is typically incorporated into another product, host or de ice. Split modular transmitters consist of two
components: a radio front end with antenna (or radio de ices) and a transmitter control element (or specific
hardware on which the software that controls the radio operation resides). All single or split modular
transmitters are appro ed with an antenna. All of the following requirements apply, except as pro ided in
paragraph (b) of this section.”
IMPLEMENTATION:
The 2112 Modular Tag consists of a microcontroller (also referred to as the processor) with timing
controlled by a crystal, a burst mode oscillator transmitter, and an antenna. There is also a connection
pro ided for an external 3 olt battery.
The microcontroller wakes up at one of 6 preset time inter als set by a component at the time of
manufacture: 1, 6, 8, 10, 15, or 20 times a second. When the microcontroller wakes up, it turns on the rest of
the Tag circuitry, then calculates and sends a packet of multiple bits spaced 500nS apart to key the
transmitter. The transmitter generates a single UWB burst for each logic 1 of digital data presented to it. The
transmitter then sends the UWB burst to the antenna.
When done, the microcontroller sets the rest of the Tag circuitry on the 2112 to power down, goes back
into its sleep mode, and waits until the set time inter al is reached again to wake-up and repeat the process.
The 2112 Module Tag documentation defining the layout, board material, circuitry, and components, is
defined in PLUS documentation:
•300-0268A, PWB, 2112 TAG Module.
•200-0275A PWA, 2112 TAG Module.
15.212 (a) (1) (i)
REQUIREMENT:
Shielding of radio elements:
IMPLEMENTATION:
See 15.212 (b), limited modular appro al.

Model 2112 Modular Tag Manual
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15.212 (a) (1) (ii)
REQUIREMENT:
“The modular transmitter must ha e buffered modulation/data inputs (if such inputs are pro ided) to
ensure that the module will comply with part 15 requirements under conditions of excessi e data rates or
o er-modulation.”
IMPLEMENTATION:
The 2112 Tag circuitry transmitter dri e from the microcontroller is a logic gate pro iding a fixed dri e
that will not o erdri e the burst mode oscillator transmitter. The data rate to the transmitter is fixed from the
microcontroller by software and the crystal time base. The modulation is set by the microcontroller and
transmitter as simple on/off keying. The transmitter generates a UWB burst pulse whene er the
microcontroller clocks a logic high ON pulse to the transmitter input.
15.212 (a) (1) (iii)
REQUIREMENT:
Power supply regulation of the modular transmitter:
IMPLEMENTATION:
See (b), limited modular appro al
15.212 (a) (1) (i )
REQUIREMENT:
“The antenna must either be permanently attached or employ a ‘unique’ antenna coupler (at all
connections between the module and the antenna, including the cable)”.
IMPLEMENTATION:
The antenna on the 2112 Module is part of the PWB layout hence will be permanently attached to the
transmitter.

Model 2112 Modular Tag Manual
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15.212 (a) (1) ( )
REQUIREMENT:
“The modular transmitter must be tested in a stand-alone configuration, i.e., the module must not be
inside another de ice during testing for compliance with part 15 requirements. Unless the transmitter module
will be battery powered, it must comply with the AC line conducted requirements found in §15.207. AC or DC
power lines and data input/output lines connected to the module must not contain ferrites, unless they will be
marketed with the module (see §15.27(a)).”
IMPLEMENTATION:
The 2112 Modular Tag was tested at the compliance test facility in the stand-alone configuration as
defined abo e. It was powered by a 3 olt coin cell battery and connected directly to the module with no wire
leads or ferrites.
15.212 (a) (1) ( i)
REQUIREMENT:
“The modular transmitter must be equipped with either a permanently affixed label or must be capable
of electronically displaying its FCC identification number.”
IMPLEMENTATION:
The 2112 Tag PWB will contain the FCC identification number of the 2112 Module in the silkscreen. See
IDENTIFICATION section of this document.
15.212 (a) (1) ( i) (A)
REQUIREMENT:
“If the FCC identification number is not isible when the module is installed inside another de ice, then
the outside of the de ice 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 Transmitter Module FCC ID:
XYZMODEL1” or “Contains FCC ID: XYZMODEL1.” Any similar wording that expresses the same meaning may
be used.”
IMPLEMENTATION:
The final product which contains the 2112 Module will be labeled or marked to indicate that it contains
FCC ID ZEH0116. Refer to PLUS drawing 320-0315 for recommended format.
Formatted: Space Before: 6 pt, After: 6 pt

Model 2112 Modular Tag Manual
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15.212 (a) (1) ( i) (B)
REQUIREMENT:
Electronic display of FCC identification number.
IMPLEMENTATION:
Not applicable, since the 2112 Modular Tag will not be installed in any product that has an electronic
display.
15.212 (a) (1) ( ii)
REQUIREMENT:
“The modular transmitter must comply with any specific rules or operating requirements that ordinarily
apply to a complete transmitter and the manufacturer must pro ide adequate instructions along with the
module to explain any such requirements. A copy of these instructions must be included in the application for
equipment authorization”
IMPLEMENTATION:
These instructions will be included as a user’s manual with any upward product the 2112 Tag module will
be integrated into. i.e.: The instructions for the current PLUS Tags will apply to products incorporating the
2112 Tag module.
15.212 (a) (1) ( iii)
REQUIREMENT:
“The modular transmitter must comply with any applicable RF exposure requirements in its final
configuration”
IMPLEMENTATION:
See all tests the 2112 Tag is compliant with under Section 15.212 (b).
15.212 (a),(2), (i),(ii),(iii), and (i )
REQUIREMENT:
Split modular system.
IMPLEMENTATION:
The 2112 Module is not a split modular system so 15.212 (a) (2) sections (i),(ii),(iii), and (i ) do not apply.

Model 2112 Modular Tag Manual
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15.212 (b)
REQUIREMENT:
“Limited modular appro al also may be granted in those instances where compliance with RF exposure
rules is demonstrated only for particular product configurations. The applicant for certification must state how
control of the end product into which the module will be installed will be maintained such that full compliance
of the end product is always ensured.”
IMPLEMENTATION:
The 2112 Modular Tag will:
•Not ha e shielding o er the radio elements of the circuitry; 15.212 (a) (1) (i)
•Not ha e regulation of its power supply (It operates from an unregulated 3V DC power source).;
15.212 (a) (1) (i)
Control of the end product is achie ed by the circuit design. Besides the 3V power source for the Tag, the
2112 circuitry is self-contained with no external circuit interface, so the microprocessor maintains the dri e to
the transmitter, and the transmitter maintains the dri e to the antenna.
Consequently, the 2112 Tag Module will apply for limited modular appro al.
In compliance testing, the 2112 Tag with no shielding of the radio elements or regulation of the power
supply was compliant with:
•15.519(c) / 15.209
•15.519(d)
•15.519(b)
•15.519(e)

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Example
Figure 1-2, below, shows an example of a 2112 Module integrated onto a PWA for potential use in an end
product. This example is one of se eral possible PWA’s PLUS could put the 2112 Modular TAG circuitry per the
controlling PLUS documentation.
Figure 1-2.

Model 2112 Modular Tag Manual
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End Product I Recommended Format
The PLUS drawing, 320-0315, that has the recommended format for the label that would include the 2112 FCC
ID number, is presented below for information.