Murata Electronics North America DM1810A User Manual

DM1810-

Base Station with Host Serial Interface

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Compatible with Cirronet miniMESHTMNetwork Protocol

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3 V, Very Low Current Operation

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Ready-to-Use OEM Module

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916MB

916.50 MHz

Transceiver

The DM1810-916MB is the 916.50 MHz base station module in the DM1810 family of RF transceiv
ers. The DM1810 family is designed for adding wireless mesh network connectivity to a wide range
of monitoring and control systems. The DM1810-916MB is equipped with a serial I/O port to inter
face a host microcontroller. Radio communications range in an “open field” environment is typically
600 meters/hop. The DM1810-916MB combines RFM’s very low current ASH radio technology with
low power microcontroller technology to achieve long battery life. This module is compatible with
Cirronet’s miniMESH
network routing. The DM1810-916MB is certified for operation under FCC 15.247 and Canadian
RSS 210 regulations.

Absolute Maximum Ratings

All Input/Output Pins Except VIN -0.3 to +3.3 V

Non-Operating Ambient Temperature Range -40 to 85

Electrical Characteristics

Operating Frequency f

Modulation Type OOK on BPSK Spreading Code

RF Encoded Data Transmission Rate 4.8 kb/s

Average Receive Input Current, No External Power Supply Load I

Receiver Input Signal for 10

Average Transmit Input Current, No External Power Supply Load I

Peak Transmit Input Current, No External Power Supply Load I

Peak Transmitter Output Power P

Bind Input Logic High 2.4 V

Bind Input Logic Low 0.45 V

Serial Port Data Rate 9.6 kb/s

Average Sleep Input Current, No External Power Supply Load I

Power Supply Input Voltage Range, -40 to +85

Power Supply Input Voltage Range, 0 to +85

Regulated Power Supply Output Voltage, VIN 3.1 to 10 V VOUT 3.0 Vdc

Regulated Power Supply Voltage Ripple 10 mV

Relative Humidity Range, Non-Condensing RH 10 90 %

TM

network protocol, which provides add-on “plug-and-play” multicast mesh

Rating Value Units

Characteristic Sym Notes Minimum Typical Maximum Units

O

R

-3

BER, 25 °C

TA

TP

O

SA

o

C VIN 3.1 10 V

o

C VIN 2.6 10 V

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o

C

916.30 916.70 MHz

Module

5.5 mA

-100 dBm

15.75 mA

32 mA

10 mW

60 µA

P-P

1

G N D

G N D

D 1

D 2

J 3 - 3

J 3 - 2

J 3 - 1

J 4 - 1

J 4 - 2

D M 1 8 1 0 - 9 1 6 M B B l o c k D i a g r a m

C N T R L 0

C N T R L 1

T R 8 1 0 0

A S H

T r a n s c e i v e r

R X D A T A

T X M O D

R S S I

L E D 1

L E D 2

P I C

1 6 F 6 8 9

µ P

Figure 1

R e g

J 1 - 1 0

G N D

J 1 - 9

S E R I A L T X

J 1 - 8

S E R I A L R X

J 1 - 7

J 1 - 6

J 1 - 5

J 1 - 4

B I N D

J 1 - 3

V O U T

3 V

J 1 - 2

J 1 - 1

V I N

G N D

Theory of Operation

The major components of the DM1810-916MB include
an RFM TR8100 ASH transceiver and a Microchip
PIC16F689 microcontroller. The TR8100 operates on
a frequency of 916.50 MHz, at a nominal output power
of 10 mW.

The 16F689 provides a 9.6 kb/s serial interface for
communication with a host microcontroller. A compan
ion interface board, the IM1800, is available with USB
bridge circuitry to interface the DM1810-916MB to a
host PC. The DM1810 includes two LEDs that indicate
the module’s operating mode.

The DM1810-916MB firmware is based on Cirronet’s
miniMESH network protocol, which utilizes time-syn
chronized redundant routing to provide robust, deter

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­ministic packet delivery though a network with up to 15
routers. Network configuration and maintenance fea

­tures are built into the miniMESH protocol, simplifying
commissioning and operating logistics. The firmware
also includes several sleep cycling methods for ex

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tended battery life operation.

Please refer to the DM1810 User’s Guide and the
AN1810 series Application Notes for installation and
application programming information. See Cirronet’s
web site at www.Cirronet.com.

DM1810-916MB FCC Certification

The DM1810-916MB hardware has been certified for
operation under FCC Part 15 Rules, Section 15.247.

The antenna(s) used for this transmitter must be in­stalled to provide a separation distance of at least
20 cm from all persons and must not be co-located or
operating in conjunction with any other antenna or
transmitter.

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FCC Notices and Labels

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 re
ceived, including interference that may cause unde
sired operation.

A clearly visible label is required on the outside of the
user’s (OEM) enclosure stating that this product con
tains a DM1810-916MB transceiver assembly, FCC
ID: HSW-DM1810A. WARNING: This device oper
ates under Part 15 of the FCC rules. Any modification
to this device, not expressly authorized by Cirronet,
Inc., may void the user’s authority to operate this de
vice.

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