Banner Engineering RM7023 Banner RM7023 Transceiver User Manual Users manual

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Document ID	1646410
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Document Description	Users manual
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Date Submitted	2012-03-01 00:00:00
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Creation Date	2012-02-28 12:13:11
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Banner Engineering RF Module Implementation Guide
Purpose: This guide is intended as an internal guidance document to ensure that the radio module
identified is installed in Banner Engineering equipment in an appropriate manner so as to comply with
the conditions of the original FCC grant and IC certificate.
Applicability: RF module FCC ID.: UE3RM7023, IC: 7044A‐RM7023
Antennas: The module was certified with the following antennas. These antennas or antennas of the
same design but lower gain may be used in the final installation.
Gain dBi
7.2

12.2
Type
Dipole
Monopole
Yagi
Antenna connection: The rf module has a non‐standard antenna connection such as a reverse gender
connector. The equipment must be professionally installed.
Final assembly labeling: The final assembly must contain a label notifying the user that the device
contains a certified rf module that is identified by the following product approval numbers:
FCC ID.: UE3RM7023
IC: 7044A‐RM7023
Human exposure to Radio Frequency (RF) energy: The module referenced in this document was
evaluated to determine compliance with ANSI C.95 (USA) and Safety Code 6 (Canada). This module can
only be used in final assemblies that are used in a mobile environment where the radiating element is
located a minimum of 20 cm. from the user or nearby persons. This module must not be used in a final
product that is used in an environment where the radiated element may be expected to be closer than
23 cm. from the user or nearby persons. Professional installation is required.
Unintentional emission requirements: The final product must be tested for unintentional emissions in
accordance with the following regulations.
USA – CFR 47, Part 15, Subpart B
Canada – ICES‐003, Issue 4
Modification: The rf module referenced in this document must not be modified in an manner.
Final Product User Guide Statements: The user guide for the final product must have the following
statements to inform the user of proper operation and implementation of the product.
FCC specific statements:
 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 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.
 Consult the dealer or an experienced radio/TV technician for help.
 FCC Caution: Any changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate this 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.
 RF Exposure warning: This device must be operated with a maximum eirp of 4 watts and a
minimum separation distance of 23 cm between the radiating elements and the user or nearby
persons.
Industry Canada specific statements (in both English and French):
 This device has been designed to operate with the antennas listed below, and having a
maximum gain of 12.2 dBi. Antennas not included in this list or having a gain greater than 12.2
dBi are strictly prohibited for use with this device. The required antenna impedance is 50 ohms.
Gain dBi
7.2
8.2
12.2
Type
Dipole
Monopole
Yagi
 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 permitted
for successful communication.
 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.
 RF Exposure warning: This device must be operated with a minimum separation distance of 23
cm between the radiating elements and the user or nearby persons.
Cet appareil a ÊtÊ conçu pour fonctionner avec les antennes ÊnumÊrÊes cidessous, et ayant un gain
maximal de 12.2dBi. Les antennes non inclues dans cette liste ou ayant un gain supĂŠrieur Ă  12.2dBi sont
strictement interdites pour une utilisation avec cet appareil. L'impĂŠdance d'antenne requise est de 50
ohms.
Gain dBi
7.2
8.2
12.2
Type
Dipole
Monopole
Yagi
Pour réduire le risque d'interférence avec d’ autres utilisateurs, le type d'antenne ainsi que son gain
doivent ĂŞtre choisis afin que la puissance isotrope rayonnĂŠe ĂŠquivalente (p.i.r.e.) ne dĂŠpasse pas
l'intensitĂŠ nĂŠcessaire Ă  l'ĂŠtablissement d'une communication satisfaisante.
Cet appareil est conforme la norme d'Industrie Canada exempts de licence RSS (s). Son fonctionnement
est sous rĂŠserve des deux conditions suivantes: (1) cet appareil ne doit causer aucune interfĂŠrence, et
(2) cet appareil doit pouvoir accepter toute interfÊrence reçue, y compris une interference pouvant
causer une opĂŠration indĂŠsirable
Avertissement d'exposition aux frĂŠquences radio (RF) : Cet appareil doit ĂŞtre utilisĂŠ avec une distance de
sĂŠparation minimale de 23cm entre les ĂŠlĂŠments rayonnants et l'utilisateur ou personnes proches.
Overview
The Banner RM7023 device is a frequency hopping spread spectrum transceiver operating in the
902 – 928 MHz band. When mounted to a carrier board containing a microcontroller and voltage
regulator, the pair is known as the DX180.
The DX180 employs a time-slotted architecture to support point to point, point to multipoint,
peer to peer and TDMA network topologies. Some operational parameters (number of hop table
frequencies, power levels, TDMA “slot times”) are configurable at the system level to provide
maximum flexibility for particular applications and network topologies, but for a given
architecture the parameters will not change in the field. This document will discuss fixed and
configurable parameters and their relation to meeting the FCC specifications. Such parameters
include the frequency plan, the time sharing architecture, power control, and approved antennas.
Also discussed will be the partitioning of radio functions as pertaining to the limited Modular
Approval for the device.
Frequency Plan
The radio is capable of transmitting or receiving on any of 64 equally spaced, non-overlapping
channels available in the 902-928 MHz band. (902.4, 902.8…927.6 MHz) From this set of 64, a
subset of M (M <= 64) unique frequencies will be chosen to populate the hop table. The subset
of M frequencies will be configured at the factory and will not be field adjustable. The radio
hops through each successive entry in the hop table in pseudorandom order and then repeats,
never truncating the list and starting over. The receiver is a direct conversion type (zero-IF)
meaning there are no additional intermediate frequency oscillators.
TDMA Plan
The radio is intended for operation in deterministic and ad-hoc networks. The communications
channel is shared in these networks using a time domain multiple access protocol. The
underlying structure to this protocol is a frame made up of N time slots, each of length Tslot.
During each time slot, a given radio could spend part of its time transmitting (Ton), receiving, or
idle to conserve energy. For this system, the time spent transmitting per time slot, Ton, is limited
in software to be between 7.8125 ms and 62.5 ms. Obviously, if the Time Slot Duration Tslot is
less than 62.5 ms, then that would be the maximum on-time per slot (by definition a transmission
can not occupy more than 100% of Tslot.) The relationship between Tslot, Ton and transmit and
receiving is illustrated graphically in Figure 1, below.
The actual duration of the slot (Tslot) is not explicitly constrained, but is governed by practical
limitations. At minimum, Tslot must be long enough for the radio circuitry to stabilize on a given
channel. At maximum, Tslot must be short enough to allow networks to form and communicate
expediently. From Equation 1, it can be seen that Tslot in this system will always be greater than
7.8125 ms.
Average time of occupancy
Under no circumstances will this scheme result in violation of the FCC maximum for average
time of occupancy on a given channel. The period of interest for the FCC is 10 seconds. Average
time of occupancy on a channel may be calculated as follows.
1. Let TFCC be the period of interest for the FCC rules. (TFCC = 10 seconds.)
2. Calculate the # of hops, Nhops, of the hop table in the period of interest. Nhops = TFCC / Tslot
3. Divide the number of hops through the table, Nhops, by the number of unique frequencies in the
hop table (M), to find the average number of hops on a given channel. Nonechannel = Nhops / M.
4. Multiply the number of hops on a given channel by the transmitter ON time, Ton , to find the
average Time of Occupancy (Toccupy)on a given channel in the period of interest. Toccupy=
Nonechannel * Ton
Taken together,
In the limiting case of streaming data Ton = Tslot, the terms cancel, and Equation 3 reduces
to
To meet the requirements of section 15.247 (a)(1)(i) off the FCC requirements, it is required that
systems in the band 902-928 MHz with bandwidths >= 250 kHz shall not occupy a given
channel any more than an average of 0.4 seconds in a 10 second window.
In the table below, the Average Time of Occupancy is calculated for representative numbers of
channels. For the DX180 system, the minimum number of channels is 26 (lower numbers of
channels being worst case for Average Time of Occupancy), and the maximum available pool of
channels is 64.
Output power control
For output power regulation as described in 15.247(b)(2), permitted output power
vs. hopping channels is as follows:
The control firmware limits output power to less than 24 dBm when utilizing less than 50
channels, and less than 30 dBm when utilizing 51-64 channels.
Antenna Choices
The following classes of antennas (Table 1) were tested and approved for use with the RM7023.
The device is always professionally installed and uses unique connectors. Installation
instructions dictate that power must be attenuated with some antenna choices to comply with the
EIRP limit of 36 dBm (4 Watts).
Statement of End Product Control
Banner will control end products in two primary ways. The first way is through the business
model: the RM7023 will not be for sale on the open market. The business model that the
RM7023 will be produced under is one of reusing the RM7023 across multiple versions of
Banner’s own internal products, or with close co-development efforts with trusted Banner
partners, which could culminate in Banner-manufactured devices being sold under another
brand. The second way that control will be maintained is more practical. The partitioning of
functions on the RM7023 and its carrier board keeps all the important intellectual property in the
microcontroller on the carrier board.
And because the profitability of the RM7023 doesn’t lie in licensing the manufacturing of the
modules, but rather in the IP that makes it a useful, networkable radio, it is safe to assume that
Banner will always retain control of the host systems. In summary, Banner has strong regulatory,
operational, and fiscal reasons for maintaining control over the products that the RM7023
appears in. Full compliance of the end products will always be ensured.

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