Inovonics Wireless Corporation 3B6OT9OEM Manual De Usuario

© Inovonics, 2011 - www.inovonics.com 

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A Connecting the One-Way Binary RF Module
B One-way binary RF modules are designed to be easily interfaced with your 

electronic remote application controller, however integration must conform to the 
following:

C The RF module must only be connected at the eight pin header or eight pin plated 

thru-holes.

D All cables and wires must be routed away from the component side of the RF 

module.

E The integrated antenna must not be tampered with; no connection to an alternate 

antenna is provided.

F The application module must not include an integrated secondary colocated radio 

module.

G The one-way binary RF module antenna should be placed so that it is facing away, 

or otherwise isolated from, your device’s ground plane. 

H Components that are sensitive to RF transmission, such as high gain circuits, 

should be isolated from the antenna to prevent interference.

One-way binary RF modules should not be mounted on metal surfaces or inside 
metal enclosures. They should also not be mounted where sheet metal ductwork, 
wire mesh screens, etc. might block transmissions.

J The RF module should be integrated so the antenna is unobstructed by the end 

user’s PCB, batteries, or any other conductive material.

 Figure 5  The RF module should be integrated so the antenna is unobstructed

The E*1941 has an on-board voltage regulator. Connect power cabling to an external 
power supply (Vcc) of 2.4 to 5.5 volts. Voltage must be sustained at 2.4 volts or above 
and supply 100 milliamps during the transmit cycle.

Assuming check-in messages every 3 minutes and infrequent alarm messages (one 
per day, on average), the average current draw is 32 uA. Peak current draw while 
transmitting is less than 100 mA. One alarm/restore cycle per hour results in about 5.3 
uA increase in average current.

Assuming check-in messages every 12 minutes and infrequent alarm messages (one 
per day, on average), the average current draw is 15 uA. Peak current draw while 
transmitting is less than 50 mA. One alarm/restore cycle per hour results in about 5.3 
uA increase in average current.

The E*1941 measures battery voltage every three and a half hours, and, when the 
battery measures 2.4 volts, a serial message is sent indicating a low battery condition.

-20°C to +60°C, non-condensing

EchoStream Commercial Mesh Network

Caution: Input levels must not exceed 3.3 V.

Open When an active source (open collector or dry contact) is used to drive the alarm 
or tamper input, the voltage should be between 0.75xVcc and Vcc. A passive input 
should have an impedance of greater than 5.1k ohm between the input and ground.
Closed When an active source is used, the voltage should be less than 0.25xVcc. A 
passive input should have an impedance of less than 240 ohm.

The LED output is an active output from the microprocessor, with a 1k series resistor 
to limit current draw.  Default state is low, and the LED pin is pulled high during 
transmit.

The EN1941 one-way binary RF module has received a Limited Modular Grant, 
requiring Inovonics to retain control of the final installation to ensure compliance to 
FCC/IC regulations. The integrator is responsible to test the final installation to verify 
compliance to FCC/IC regulation for unintentional emissions.
Prior to marketing the product, the integrator must complete and submit to Inovonics a 
compliance review form and documentation, and, if requested, a functional product 
sample for approval. If this is not possible, the integrator must perform the testing 
themselves and submit proof to Inovonics of compliance to Part 15 of the FCC Rules 
and Industry Canada RSS-210. 
At the end of this guide is an Inovonics compliance review form to be filled out by the 
integrator.
The integrator is also responsible for properly labeling the product containing the one-
way binary RF module. Labels must be placed on the outside of the product, and must 
include a statement indicating that the product contains the module, along with the 
FCC and IC number.
Example 1 “Contains One-Way Binary RF Module 
FCC ID: HCQ3B6OT9OEM; IC ID: 2309A-ETOEMM”
Example 2 “Contains FCC ID: HCQ3B6OT9OEM; IC ID: 2309A-ETOEMM”

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.

•

Consult the dealer or an experienced radio/TV technician for help.

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

this device must accept any interference received, including interference that may 
cause undesired operation.

Inovonics Wireless has received European Telecommunications Standards Institute 
approval to market one-way binary RF modules, and they are manufactured to be 
RoHS compliant. The integrator is responsible for properly labeling the product 
containing the one-way binary RF module. Labels must be placed on the outside of 
the product, and must include the CE logo.

Open

Alarm Clear

Alarm

Ground

Alarm

Alarm Clear

Open

Alarm Clear

Alarm

Ground

Alarm

Alarm Clear

Open

Alarm

Alarm

Ground

Alarm Clear

Alarm Clear

Open for normal operation; connect to the ground and release 
for a board reset.