I
NTEGRATION
G
UIDE FOR TRANSITIONING FROM
LT2510
TO
RM024
I
NTRODUCTION
The RM024 is the first new module in Laird’s rebranded RAMP (Range Amplified MultiPoint) line of
modules. Laird’s RAMP modules excel at providing a wireless serial link over long ranges and with
support for multipoint networks. RAMP modules utilize a Frequency Hopping Spread Spectrum
(FHSS) protocol for greater interference and multipath immunity. With two transceivers, the RAMP
line can provide a wireless serial cable replacement capable of extending communications well
beyond the 50 foot maximum for wired connections. RAMP modules also support multipoint –
Star network topologies – and users can employ a nearly unlimited number of clients for
applications such as sensors, controls, and text display boards.
The RM024 is based on the same core technology as the LT2510 and is designed to be a drop in
replacement. Differences between the modules may affect customer designs though; this
document will identify those differences. The RM024 and the LT2510 are over the air compatible
and can both be used in the same network.
P
ART
N
UMBERS
LT2510
Part Number
PRM110
PRM111
PRM120
PRM121
PRM112
PRM113
PRM122
PRM123
RM024
Part Number
RM024-S125-C-01
RM024-S125-M-01
RM024-P125-C-01
RM024-P125-M-01
RM024-S50-C-01
RM024-S50-M-01
RM024-P50-C-01
RM024-P50-M-01
Form Factor
SMT
SMT
Pluggable
Pluggable
SMT
SMT
Pluggable
Pluggable
Maximum
Tx Power
125 mW
125 mW
125 mW
125 mW
50 mW
(CE)
50 mW
(CE)
50 mW
(CE)
50 mW
(CE)
Antenna
u.FL Jack
Chip
Antenna
u.FL Jack
Chip
Antenna
u.FL Jack
Chip
Antenna
u.FL Jack
Chip Ant
EEPROM
Product ID
RM024125C01
RM024125M01
RM024125C01
RM024125M01
RM02450C01
RM02450M01
RM02450C01
RM02450M01
Americas: +1-800-492-2320 Option 3
Europe: +44-1628-858-940
Hong Kong: +852-2268-6567 x026
www.lairdtech.com/wireless
1
Laird Technologies
TRANSITIONING FROM LT2510 TO RM024
Integration Guide
S
PECIFICATIONS
Detailed Specifications
General
Form Factor
Antenna
Transceiver
Output Power
Conducted
2
Supply Voltage
Current Draw
FCC: +11 to +21dBm selectable
CE: +8 to +17dBm selectable
3.3V – 3.6V ± 50mV ripple
100% Tx
1/8 Tx
(when
selected)
100% Rx
Rx average
(idle current)
Deep sleep
Receiver
Sensitivity (1%
PER)
Range
(based on
external 2.5dBi
antenna at
280kbps RF Data
Rate)
5
190 mA
40mA
40 mA
10 mA
50 µA
85 mA
40 mA
40 mA
10 mA
50 µA
FCC: +5 to +21dBm selectable
CE: +3.5 to +17dBm selectable
2.3 – 3.6V ± 50mV ripple
100% Tx
1/8 Tx
(when selected)
100% Rx
Rx average
(idle current)
Deep sleep
3
166 mA
40mA
36 mA
9.5 mA
50 µA
85 mA
40 mA
36 mA
11.6 mA
50 µA
LT2510
SMD-ANT, SMD-U.FL, Pluggable-
ANT, Pluggable-U.FL
Integrated chip antenna or
external antenna through U.FL
connector
RM024
SMD-U.FL, Pluggable-U.FL, SMD-
ANT+U.FL, Pluggable-ANT+U.FL
external antenna through U.FL
connector or both U.FL and
Integrated Chip Antenna
-95 dBm at 280 kbps RF Data
Rate
4
-94 dBm at 500 kbps RF Data Rate
Outdoor
(line-of-
sight)
FCC
CE
2.5 miles
(4 km)
1.5 miles
(2.4 km)
Indoor
(estimated)
1300 ft
(400 m)
790 ft
(240 m)
-95 dBm at 280 kbps RF Data Rate
-94 dBm at 500 kbps RF Data Rate
Outdoor
(line-of-sight)
FCC
CE
2.5 miles
(4 km)
1.5 miles
(2.4 km)
Indoor
(estimated)
1300 ft
(400 m)
790 ft
(240 m)
Physical
6
SMD-ANT and
SMD-Both
Dimensions
SMD-U.FL
Dimensions
Pluggable-ANT
and Pluggable-
Both Dimensions
1.0” x 1.54” x 0.14”
(25.4 mm x 39 mm x 3.6 mm)
1.0” x 1.28” x 0.14”
(25.4 mm x 32.4 mm x 3.6 mm)
0.96” x 1.42” x 0.406”
(24.3 mm x 36 mm x 10.3 mm)
1.0” x 1.54” x 0.14”
(25.4 mm x 39 mm x 3.6 mm)
1.0” x 1.28” x 0.14”
(25.4 mm x 32.4 mm x 3.6 mm)
1.05” x 1.56” x 0.44”
(26.7 mm x 39.6 mm x 11.3 mm)
Laird Technologies
Americas: +1-800-492-2320 Option 3
Europe: +44-1628-858-940
Hong Kong: +852-2268-6567 x026
www.lairdtech.com/wireless
2
TRANSITIONING FROM LT2510 TO RM024
Integration Guide
General
Pluggable-U.FL
Dimensions
Certificate
FCC Part 15.247
Industry Canada
(IC)
CE
RoHS
Japan
Brazil (Anatel)
1
1.
2.
3.
4.
5.
6.
LT2510
0.96” x 1.185” x 0.406”
(24.3 mm x 30.1 mm x 10.3 mm)
RM024
1.05” x 1.29” x 0.42”
(26.7 mm x 33 mm x 10.6 mm)
KQL-2510100P
KQL-2510100P
2268C-2510100P
2268C-2510100P
N/A
EN 300 328-2 V1.71,EN 301 489
Yes
PRM122: 005WWCA0358
PRM123: 005WWCA0359
3000-10-6625
No
TBD
TBD
TBD
Yes
TBD
None
Contact your sales representative for more details.
Maximum Output power stated, step measurements for power could vary by +/- 1.5 dBm. Step
downs on RM024 are larger than on LT2510, resulting in lower Maximum Power for each step.
Sleep current is estimated.
Estimated. Measurements were taken at 4.1 miles with 5 dBi antenna.
RX Sensitivity is listed at -98 dBm in the LT2510 User Manual, restated here based on new
measurements.
Physical Dimensions are estimated, actual measurements are printed in Mechanical Drawings
section of this document.
PIN F
UNCTION
C
HANGES
No pins change function.
Americas: +1-800-492-2320 Option 3
Europe: +44-1628-858-940
Hong Kong: +852-2268-6567 x026
www.lairdtech.com/wireless
3
Laird Technologies
TRANSITIONING FROM LT2510 TO RM024
Integration Guide
EEPROM A
DDRESS
C
HANGES
The following EEPROM addresses are different on the RM024.
EEPRO
M
Addres
s
0x00 –
0x23
LT2510
Name
Product
ID
RM024
Name
Product
ID
LT2510
Description
Product identifier
string; includes
revision
information for
software and
hardware.
Factory set part
number for the
unit
bit-5: Sleep
Calibration
Enable
0 = Disable
1 = Enable
RM024
Description
Product identifier
string; includes
revision
information for
software and
hardware.
Factory set part
number for the
unit
Selects which
antenna port is to
be used
0 == Antenna Port
2 (Black Chip)
1 == Antenna Port
1 (u.FL)
Notes
Product ID is
changing to reflect
new RM024 part
number
0x90 –
0x9F
Part Numbers is
changing to reflect
new RM024 part
number
This bit has been
repurposed.
In LT2510, this bit
enabled sleep timer
calibration. In
RAMP modules, the
sleep timer is
constantly
undergoing
calibration, so this
bit is no longer
required.
The Antenna Select
EEPROM bit is
loaded at boot on
the RM024.
Part
Numbers
Part
Numbers
0xC1,
Bit 5
Sleep
Calibratio
n
Enabled
Antenna
Select
AT C
OMMANDS
The following is a new AT Command for Antenna Select on the RM024:
Antenna Switch Command: Command sets the antenna port for the transceiver to use.
Command:
Response:
Port Select:
<0xCC><0x26><Port Select>
<0xCC><0x26><Port Select>
Antenna Port 2 == 0x00 (Integrated Antenna)
Antenna Port 1 == 0x01 (U.FL Port)
Americas: +1-800-492-2320 Option 3
Europe: +44-1628-858-940
Hong Kong: +852-2268-6567 x026
www.lairdtech.com/wireless
4
Laird Technologies
TRANSITIONING FROM LT2510 TO RM024
Integration Guide
R
EGULATORY
I
NFORMATION
FCC
Due to changes to the key components of the radio frequency (RF) Path, the RM024 will carry a
different regulatory approval number, model number, and have new test reports. Customers are
recommended to have a qualified test lab perform FCC Part 15 Subpart B unintentional radiator
testing on their device to make sure that it continues to be in compliance with the emission limits
for either a Class A or B digital device. In addition, customers will need to update their label
information on their product with the new FCC and IC identification numbers and will need to
update their user manuals and other documentation to reflect the new regulatory information.
CE
A new Declaration of Conformity will be issued for the RM024. Customers will need to update
their Declaration of Conformity to reflect new reports that we issue.
Americas: +1-800-492-2320 Option 3
Europe: +44-1628-858-940
Hong Kong: +852-2268-6567 x026
www.lairdtech.com/wireless
5
Laird Technologies
stm32/stm8
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