DN-900 Series - uri=media.digikey

DN-900 Series - uri=media.digikey
Preliminary
DN-900
Series
- 900 MHz RS-232C, RS-485/RS-232C and USB Serial Modems
- Optional 128-Bit AES Encryption
- Point-to-point, Point-to-multipoint, Peer-to-peer and
Tree-routing Network Capabilities
- Frequency Hopping Spread Spectrum Transceiver
- Transceiver Housed in a NEMA 4X/IP66 Waterproof Case
- RF Data Rate Configurable from 38.4 to 500 kbps
- Transmitter Power up to 1.58 W EIRP using Internal Antenna
- FCC and Canadian IC Certified for Unlicensed Operation
900 MHz
Wireless
Serial
Modems
The DN-900 series 900 MHz serial modems provide ready-to-use solutions for robust wireless data communications in the 900 MHz ISM band. There are currently three products in
the DN-900 series, the DN-900G, the DN-900I and the DN-900U. The DN-900G provides an
RS-232C serial interface. The DN-900I offers a two-wire, multi-drop RS-485 interface plus a
selectable RS-232C interface for configuration programming. The DN-900U provides a USB
interface. DN-900 series modems are based on RFM’s DNT900 frequency hopping spread
spectrum (FHSS) transceiver, and can communicate with other DNT900-based RFM products
as well as customer developed products. DN-900 series modems consist of a radio module in
a NEMA 4X/IP66 waterproof case connected to a serial interface adapter by a power and signal cable that allows the radio module to be located remotely at a point of good RF propagation. DN-900 series modems are well-suited for serial data networks carrying moderate traffic
that need robust communications in locations with non-ideal RF propagation and/or where RF
interference or noise are present.
DN-900 Series Absolute Maximum Ratings
Rating
Value
Power Supply Input Voltage Range
-0.5 to +24
Non-Operating Ambient Temperature Range
-40 to +85
Units
V
o
C
DN-900 Series Specifications
Characteristic
Operating Frequency Range
Hop Dwell Time
Number of RF Channels in a Subband
Modulation
RF Data Transmission Rates
Standard Antenna
Sym
Notes
Minimum
Maximum
Units
902.75
Typical
927.25
MHz
5
200
ms
50
FSK
38.4, 115.2, 200 and 500
kbps
Internal 2 dBi directional antenna
Receiver Sensitivity through 2 dBi Antenna:
10-5 BER @ 38.4 kb/s
-110
dBm
-5
-100
dBm
-5
-96
dBm
1.58, 15.8, 100, 395, 790, 1580
mW
1.58, 15.8, 135
mW
10 BER @ 200 kb/s
10 BER @ 500 kb/s
EIRP Output Power Levels through 2 dBi Antenna:
38.4 to 200 kbps
500 kbps
www.RFM.com E-mail: info@rfm.com
© 2012 by RF Monolithics, Inc.
Page 1 of 5
DN-900 Series - 07/30/12
DN-900 Series Specifications
Characteristic
Sym
Notes
Minimum
Typical
Maximum
Optional External Antenna Connector
Reverse TNC (RTNC)
External Antenna Impedance
50 ohms, VSWR < 3:1
Units
Direct Receiver Sensitivity through RTNC Connector:
10-5 BER @ 38.4 kb/s
-108
dBm
-5
-98
dBm
-5
-94
dBm
1, 10, 63, 250, 500, 1000
mW
1, 10, 85
mW
10 BER @ 200 kb/s
10 BER @ 500 kb/s
Direct Output Power Levels through RTNC Connector:
38.4 to 200 kbps
500 kbps
Network Topologies
Point-to-Point, Point-to-Multipoint,
Peer-to-Peer, Tree-Routing
Access Scheme
Number of Remote Nodes, TDMA Mode
TDMA/CSMA
1
16
Number of Remote Nodes, CSMA Mode
Limited only by traffic density
DN-900G RS-232C Configuration
9-pin connector, hardware flow control optional
DN-900I RS-232C Configuration
3-wire, no hardware flow control
DN-900I RS-485 Configuration
2-wire, multi-drop capable
DN-900U USB Configuration
Serial Port Baud Rates
USB Type B connector
1.2, 2.4, 4.8, 9.6, 19.2, 28.8,
38.4, 57.6, 76.8, 115.2, 230.4, 460.8
kbps
4, 50, 100, 300
ft
Signal Cable Length Options
(see Ordering Guide on Page 5)
DC Power Supply Voltage Range, up to 50 ft signal cable
+6
+24
Vdc
DC Power Supply Voltage Range, 50 ft to 300 ft cable
+12
+24
Vdc
DC Power Supply Ripple, 1.5 A load
250
mVP-P
Peak Transmit Mode DC Power
6.8
W
Average Receive Mode Power:
Base, Continuous Data Stream
760
mW
Remote, Linked, No Data
317
mW
Remote, Continuous Data Stream, 9.6 kbps
345
mW
Remote, Continuous Data Stream, 115.2 kbps
428
mW
3.85 x 1.70 x 0.85 inches
( 80 x 43 x 22 mm)
Interface Adapter Nominal Dimensions
Radio Module Case Rating
NEMA 4X/IP66 outdoor enclosure
5.15 x 5.00 x 1.40 inches
(131 x 127 x 36 mm)
Radio Module Nominal Dimensions
Radio Module Mounting
Flange with pre-drilled mounting holes; mount
flange to mast with bolts or hose clamps
Operating Temperature Range
-40
85
o
Operating Relative Humidity Range, Non-condensing
10
90
%
www.RFM.com E-mail: info@rfm.com
© 2012 by RF Monolithics, Inc.
C
Page 2 of 5
DN-900 Series - 07/30/12
Figure 1
DN-900 Series Modem Operation
The DN-900 series 900 MHz modems provide high performance, ready-to-use solutions for robust wireless data communications in the 900 MHz ISM band. There are currently
three products in the DN-900 series, the DN-900G, the
DN-900I, and the DN-900U. The DN-900G provides an
RS-232C serial interface with optional flow control. The
DN-900I offers a two-wire, multi-drop RS-485 interface plus
a selectable three-wire RS-232C interface for configuration
programming. The DN-900U provides a USB interface.
DN-900 series modems are based on RFM’s DNT900 frequency hopping spread spectrum (FHSS) transceiver, and
can communicate with other DNT900-based RFM products,
as well as customer developed products.
As shown in Figure 1, DN-900 series modems consist of a
radio module in a NEMA 4X/IP66 waterproof case with an
internal 2 dBi directional antenna, a signal cable that carries
power and data, and an interface adaptor that includes a
power supply connector and the appropriate serial data connector. The radio module can optionally be provided with a
RTNC antenna connector in lieu of the internal antenna (see
Ordering Guide on Page 5). DN-900 serial modems with the
RTNC connector are compatible with RFM’s complete line of
900 MHz antennas, allowing extended operating range
where allowed by local regulations.
www.RFM.com E-mail: info@rfm.com
© 2012 by RF Monolithics, Inc.
DN-900 series modems are supplied with a 110/220 VAC
wall-plug power supply that includes an international plug
set. Optionally, DN-900 series modems can be powered
from a user-supplied DC source as described in the specifications table. The signal cable can specified as 4, 50, 100 or
300 feet in length (see Ordering Guide on Page 5), which allows the radio module to be located remotely indoors or outdoors at a point of good RF propagation. DN-900 modems
can transmit data from 38.4 to 500 kbps, and the transmitter
output power can be set from 1.58 mW to 1.58 W EIRP
when using the internal antenna.
DN-900 series modems are well-suited for serial data networks carrying moderate traffic that need robust communications in locations with non-ideal RF propagation and/or
where RF interference or noise are present. DN-900 serial
modems can operate in point-to-point, point-to-multipoint,
peer-to-peer and tree routing DNT900-based wireless networks.
DN-900 data modems are shipped configured to transmit
transparent data, which requires no protocol formatting. All
that is required to set up a transparent point-to-point serial
data link to configure one modem as a base unit using a
simple PC-based utility. DN-900 series modems can also
operate in protocol mode, which is supported by a rich set of
configuration parameters that allow a wide range of network
layouts and configurations to be optimized.
Page 3 of 5
DN-900 Series - 07/30/12
DN-900G/DN-900U Power Connector and LED Description
Ref
Name
I/O
Description
T
+PWR
I
The center coaxial conductor (tip) is the positive DC power input.
R
GND
-
The outer coaxial conductor (ring) is the DC power ground.
G
PWR
O
Green LED indicates the unit is powered.
A
LINK
O
Amber LED indicates the unit is linked.
DN-900G Serial Port DB9 Connector Description
Pin
Name
I/O
Description
1
DCD
O
This pin is an output indicating the modem is linked to the radio network.
2
RADIO_TXD
O
This pin is the DN-900G serial data output.
3
RADIO_RXD
I
This pin is the DN-900G serial data input.
4
DTR
I
This pin is the data terminal ready input from the DN-900G host.
5
GND
-
This pin is signal ground.
6
-
-
No connection.
7
HOST_RTS
I
This pin is the request to send input from the DN-900G host.
8
HOST_CTS
O
This pin is the clear to send output from the DN-900G.
9
-
-
No connection.
DN-900I Serial Port Terminal Block Description
Pin
Name
I/O
Description
1
+PWR
I
This terminal is the positive power supply input, +6 to +24 V.
2
GND
-
This terminal is a power supply and signal ground.
3
485 EN
I
When this terminal is unconnected, serial operation is RS-232C. When this terminal is grounded
to terminal 2 or 4, serial operation is RS-485.
4
GND
-
This terminal is a power supply and signal ground.
5
TX/A
O
This terminal transmits data to the host (RS-232C TxD or RS-485 A signal).
6
RX/B
I
This terminal receives data from the host (RS-232C RxD or RS-485 B signal).
www.RFM.com E-mail: info@rfm.com
© 2012 by RF Monolithics, Inc.
Page 4 of 5
DN-900 Series - 07/30/12
D N -9 0 0 S e r ie s T r a n s c e iv e r C a s e
=
1 .4 0
(3 6 )
5 .0 0
(1 2 7 )
4 .4 0
(1 1 2 )
3 .2 0
(8 1 )
5 .1 5
(1 3 1 )
D im e n s io n s in
in c h e s a n d (m m )
4 .8 0
(1 2 2 )
Figure 2
DN-900 Serial Modem Part Number Ordering Guide
Cable Length, feet
Serial Interface
Antenna/Connector
4
50
100
300
RS-232C, DB9 Connector
Internal 2 dBi Antenna
DN-900G-4
DN-900G
DN-900G-100
DN-900G-300
RS-232C, DB9 Connector
RTNC Connector
DN-900GX-4
DN-900GX
DN-900GX-100
DN-900GX-300
RS-485/RS-232C, 6-Pin Terminal Block
Internal 2 dBi Antenna
DN-900I-4
DN-900I
DN-900I-100
DN-900I-300
RS-485/RS-232C, 6-Pin Terminal Block
RTNC Connector
DN900IX-4
DN-900IX
DN-900IX-100
DN-900IX-300
USB Type B Connector
Internal 2 dBi Antenna
DN900U-4
DN-900U
DN-900U-100
DN-900U-300
USB Type B Connector
RTNC Connector
DN900UX-4
DN-900UX
DN-900UX-100
DN-900UX-300
Note: Specifications subject to change without notice.
Part # M-0900-5000, Rev A
www.RFM.com E-mail: info@rfm.com
© 2012 by RF Monolithics, Inc.
Page 5 of 5
DN-900 Series - 07/30/12
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