AeroComm RM024 User Manual
RAMP Wireless Module
RM024
Hardware Integration Guide
Version 3.1
Americas: +1-800-492-2320 Option 2
Europe: +44-1628-858-940
Hong Kong: +852-2923-0610
www.lairdtech.com/ramp
RM024 Hardware Integration Guide
Americas: +1-800-492-2320 Option 2
Europe: +44-1628-858-940
Hong Kong: +852-2923-0610
www.lairdtech.com/wireless
2
CONN-HIG_RAMP24
Rev.
Revision Date
Description
1.0
Initial Version
2.1
Added firmware changes, updated the name of the Force 9600 Pin,
removed old references to LT2510 part numbers, added new
information on cyclic sleep and Antenna Switch Override. Added a
table under Max Power and a table for the Set Max Power command.
2.2
Minor grammatical fixes.
2.3
27 June 2013
PWM output data was corrected to a 39.3846 µS period vs. 315.077, as
was stated previously.
2.4
12 July 2013
Minor edits, removed Firmware History and references irrelevant to
RM024.
2.5
10 Oct 2013
Corrected Antenna Select Override information error. Changed 0x59
to 0x5B
3.0
10 Dec 2013
Separated Hardware Integration Guide (HIG) from User Guide
information (created two separate documents).
Add Related Documents section.
3.1
10 Jan 2014
Added 10 mW version information.
Version 3.1
REVISION HISTORY
RM024 Hardware Integration Guide
Americas: +1-800-492-2320 Option 2
Europe: +44-1628-858-940
Hong Kong: +852-2923-0610
www.lairdtech.com/wireless
3
CONN-HIG_RAMP24
Version 3.1
CONTENTS
Revision History ................................................................................................................................................... 2
Contents .............................................................................................................................................................. 3
RAMP Modules ................................................................................................................................................... 4
Overview ........................................................................................................................................................ 4
Key Features .................................................................................................................................................. 4
Detailed Specifications ............................................................................................................................... 5
Pin Definitions ................................................................................................................................................. 7
Input Characteristics .................................................................................................................................... 8
Output Characteristics ................................................................................................................................ 8
Block Diagram ............................................................................................................................................... 9
Timing Specifications .................................................................................................................................... 9
RF Hop Frame .............................................................................................................................................. 10
Hardware Interface ........................................................................................................................................ 12
Pin Descriptions ........................................................................................................................................... 12
Mechanical Considerations .......................................................................................................................... 14
Mechanical Drawing ................................................................................................................................. 14
Ordering Information ...................................................................................................................................... 18
Product Part Numbers ................................................................................................................................ 18
Regulatory Information .................................................................................................................................. 19
FCC/IC Requirements for Modular Approval ........................................................................................ 19
CE Requirements for Modular Approval ................................................................................................ 21
Japan Requirements for Modular Approval ......................................................................................... 22
Related Documents ........................................................................................................................................ 24
RM024 Hardware Integration Guide
Americas: +1-800-492-2320 Option 2
Europe: +44-1628-858-940
Hong Kong: +852-2923-0610
www.lairdtech.com/wireless
4
CONN-HIG_RAMP24
Version 3.1
RAMP MODULES
Laird RAMP (Range Amplified MultiPoint) modules are designed to provide robust wireless
communications for any number of applications requiring a wireless transport for serial data.
RAMP modules feature a Frequency Hopping Spread Spectrum (FHSS) protocol for excellent
interference and multipath immunity. RAMP modules server/client architecture allows for more
than 16 million clients to be addressed and communicating within the network.
Overview
The RM024 RAMP module is based on Laird LT2510 core technology, enhanced with a new RF
front end for improved sleep, improved link budget, and a switchable antenna output. The
RM024 is available in two versions, one with 125 mW maximum conducted output power which is
approved for North American and similar markets, and one with 10 mW maximum conducted
output power which is approved for European and similar markets. These modules are identical
except for output power, transmit power consumption, and the number of RF channels
available. Differences between the two versions, where applicable, are denoted based on part
number.
This document contains information about the hardware and software interface between a
Laird RM024 transceiver and an OEM host. Information includes the theory of operation,
specifications, interface definitions, and mechanical drawings.
Note: Unless mentioned specifically by name, the RM024 modules are referred to as “radio”
or “transceiver”. Individual naming is used to differentiate product specific features.
The host (PC/microcontroller/any device to which the RM024 module is connected)
are referred to as “OEM host” or “host.”
Key Features
Retries and acknowledgements
Configurable network parameters
Multiple generic I/O
280 kbps or 500 kbps RF data stream
Idle current draw of 9.5 mA, sleep current of 50 uA
Software selectable interface baud rates from 1200 bps to 460.8 kbps
Upgradable FW through serial port
Low cost, low power, and small size ideal for high volume, portable, and battery powered
applications
All modules are qualified for Industrial temperatures (-40°C to 85°C)
Advanced configuration available using AT commands
Easy to use Configuration and Test Utility software
Switchable antenna output, either integrated antenna or external antenna through U.FL
RM024 Hardware Integration Guide
Americas: +1-800-492-2320 Option 2
Europe: +44-1628-858-940
Hong Kong: +852-2923-0610
www.lairdtech.com/wireless
5
CONN-HIG_RAMP24
GENERAL
Form Factor
SMD-ANT+U.FL, Pluggable-ANT+U.FL, SMD-U.FL,
Pluggable-U.FL
Antenna
External antenna through U.FL connector or dual
antenna with integrated antenna and U.FL
Serial Interface Data Rate
Baud rates from 1200 to 230400. Non-standard
baud rates are also supported.
Channels
FCC: 42 or 78 selectable channels
CE: 42 selectable channels
Security
Channelization, System ID, and Vendor ID
Minimum Flash (EEPROM) Memory
Endurance
1000 Write/Erase Cycles
TRANSCEIVER
Frequency Band
2400 – 2483.5 MHz
RF Data Rate (Raw)
280 kbps or 500 kbps selectable
Hop Bin Spacing
900 kHz over 79 hops
1500 kHz over 43 hops
RF Technology
Frequency Hopping Spread Spectrum
Modulation
MSK
Maximum Output Power Conducted1
FCC: +5 to +21 dBm selectable
CE: +3.5 to +18 dBm selectable
Supply Voltage
2.3 – 3.6 V ± 50 mV ripple
Current Draw2
RM024 Version
FCC(125mW)
CE(10mW)
100% Tx
136 mA
40 mA
1/8 Tx (when
selected)
40 mA
40 mA
100% Rx
36 mA
36 mA
Rx average (idle
9.5 mA
9.5 mA
Deep sleep
.38 µA
.38 µA
Receiver Sensitivity (1% PER)
-95 dBm at 280 kbps RF Data Rate
-94 dBm at 500 kbps RF Data Rate
Range (based on external 2.0 dBi
antenna at 280 kbps RF Data Rate)3
Outdoor (line-ofsight)
Indoor
(estimated)
FCC
2.5 miles (4 km)
1300 ft (400 m)
CE
.6 miles (1.0 km)
328 ft (100 m)
ENVIRONMENTAL
Temperature (Operational)
-40ºC to 85ºC
Temperature (Storage)
-50ºC to 150ºC
PHYSICAL
Version 3.1
Detailed Specifications
Table 1: Detailed Specifications
RM024 Hardware Integration Guide
Americas: +1-800-492-2320 Option 2
Europe: +44-1628-858-940
Hong Kong: +852-2923-0610
www.lairdtech.com/wireless
6
CONN-HIG_RAMP24
SMD-Multi Antenna Dimensions
1.0” x 1.54” x 0.14” (25.4 mm x 39 mm x 3.6 mm)
SMD-U.FL Dimensions
1.0” x 1.28” x 0.14” (25.4 mm x 32.4 mm x 3.6 mm)
Pluggable-Multi Antenna Dimensions
1.05” x 1.56” x 0.44” (26.7 mm x 39.6 mm x 11.3 mm)
Pluggable-U.FL Dimensions
1.05” x 1.29” x 0.42” (26.7 mm x 33 mm x 10.6 mm)
Version 3.1
RM024 Hardware Integration Guide
Americas: +1-800-492-2320 Option 2
Europe: +44-1628-858-940
Hong Kong: +852-2923-0610
www.lairdtech.com/wireless
7
CONN-HIG_RAMP24
CERTIFICATIONS
FCC Part 15.247
KQL-RM024
Industry Canada (IC)
2268C-RM024
CE
Yes, RM024-x10-x versions
RoHS
Yes
Japan (TELEC) 4
Yes, RM024-x50-x versions
Brazil (Anatel)
5
None
SMT Pin
Pluggable Pin
Type
Signal Name
Functions
1 7 O
GIO_0
Generic Output / Hop_Frame
2 6 O
GIO_1
Generic Output
3 8
DNC
Do Not Connect
4
17 O GIO_2
RS485 Driver Enable
5
19 O GIO_3
PWM Output
6 3 I
RXD
Asynchronous serial data input to
transceiver
7 2 O
TXD
Asynchronous serial data output from
transceiver
8
10
GND
GND
Signal Ground
9 1 PWR
Vcc
2.3 – 3.6 V ±50 mV ripple (must be
connected)
10 - PWR
Vpa
2.3 - 3.6 V ±5 0mV ripple (must be
connected)
11 - GND
GND
Signal Ground
12 9 I
Force 9600
/Sleep
Interrupt
Force 9600 – When pulled logic Low and
then applying power or resetting, the
transceiver’s serial interface is forced to a
9600, 8-N-1 rate.
Sleep Interrupt- When taken low this pin will
wake the radio from sleep
Note: Because this mode disables some
modes of operation, it should not be
permanently pulled Low during
normal operation.
13
14 I GIO_4
Generic Input
14 5 I
µP_Reset
RESET – Controlled by the RM024 for power-
Version 3.1
1. Maximum Output power stated, step measurements for power could vary by +/- 2.0 dBm.
2. Sleep currents are estimated
3. Range distances are estimated, measurements were taken at 4.1 miles with 5 dBi antenna
for FCC module
4. See Regulatory Information in this manual
5. Contact your sales representative for more details.
Pin Definitions
Table 2: Pin Definitions
RM024 Hardware Integration Guide
Americas: +1-800-492-2320 Option 2
Europe: +44-1628-858-940
Hong Kong: +852-2923-0610
www.lairdtech.com/wireless
8
CONN-HIG_RAMP24
SMT Pin
Pluggable Pin
Type
Signal Name
Functions
on reset if left unconnected. After a stable
power-on reset, a logic Low pulse will reset
the transceiver.
15
11
I
CMD/Data
When logic Low, the transceiver interprets
incoming OEM host data as command
data. When logic High, the transceiver
interprets OEM host data as transmit data.
16
15
O
In Range
When logic Low, the client is in range and
synchronized with a server. This will always
be Low on a server.
17
16
I
RTS
Request to Send. Floats high if left
unconnected. When enabled in EEPROM,
the module will not transmit data out the
Serial UART unless the pin is Low.
18
12
O
CTS
Clear to Send - CTS is used for hardware
flow control. CTS will toggle high when the
input buffer reaches the CTS On threshold
until the buffer recedes below CTS Off.
19
18 GIO_8
Generic Input
1
20
13 GIO_5
Reserved for future use. Do not connect.
21 4
GIO_6
Reserved for future use. Do not connect.
22
20 I GIO_7
Analog to Digital Input
Signal Name
High Min.
High Max.
Low Min.
Low Max.
µP_Reset
0.8 v
Vcc
0 v
0.6 v
RTS
2.31 v
Vcc
0 v
.99 v
AD_In
N/A
Vcc
0 v
N/A
All other inputs
70% Vcc
Vcc
0 v
30% Vcc
Signal Name
High Min.
High Max.
Low Min.
Low Max.
Sink Current
Version 3.1
Tips:
All I/O directions are referenced to Vcc.
All inputs are weakly pulled High via a 20k Ohm pull-up resistor and may be left floating
during normal operation
Minimum connections: VCC, VPA, GND, TXD, & RXD
Signal direction is with respect to the transceiver
Unused pins should be left disconnected
Input Characteristics
Table 3: Input Characteristics
Output Characteristics
Table 4: Output Characteristics
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