www.rfm.com e-mail: info@rfm.com page 1 of 2 ?2008 by rf monolithics, inc. WIT910M2 - 6/5/08 developer kit (info: click here ) general specifications rf frequency 902 to 927 mhz radio certifications fcc part 15, canadian rss-210 operating range indoor - 1000 ft, outdoor - more than 20 miles with omni-directional antenna network topologies point-to-point and point-to-multipoint (star) network protocol high remote capacity csma with option for limited tdma error detection and correction 24-bit crc and arq serial data interface asynchronous (uart) cmos signals, 3.3 v, 5 v tolerant serial data rate up to 115.2 kb/s, software selectable channel data rate 172.8 kb/s number of frequency channels 54 rf bandwidth 460 khz transmit power output 10, 20, 27 or 29 dbm, software selectable receiver sensitivity -103 dbm for 10-5 ber supply voltage 3.3 to 10 v for up to 27 dbm transmit power, 5 to 10 v for 29 dbm transmit power current consumption 29 dbm transmit power, 57.6 kb/s serial data rate remote sleep 250 a base station receive 125 ma operation: standby 43 ma operation: transmit 800 ma receive 100 ma transmit 800 ma size 80.2 x 46.5 x 8.6 mm weight 35 g operating temperature -40 c to 70 c humidity 20% to 90% (non-condensing) 900 mhz fhss transceiver module WIT910M2 features: ? fast wireless serial data transmission robust 900 mhz frequency hopping spread spectrum technology more than 20 mile outdoor range with omni-directional antennas 3.3 volt operation, low power consumption small size, light weight certified for unlicensed operation in the usa and canada benefits: suitable for point-to-point and point-to- multipoint networks supports large number of nodes high immunity to interference and multipath fading supports long range applications easy to integrate ideal for battery powered devices rohs compliant shown with shield removed WIT910M2 transceiver modules are designed to transmit serial data using highly robust 900 mhz frequency hopping spread spectrum (fhss) technology. WIT910M2 modules employ rfm?s beacon-synchronized csma at an rf data rate of 172.8 kb/s to support a high number of remotes. WIT910M2 transceivers are suitable for both point-to-point and point-to-multipoint networks. fhss technology provides strong immunity to both interference and multipath fading. the small size, light weight and low power consumption of these transceiver modules make them suitable for a wide variety of applications. WIT910M2 modules are certified for unlicensed operation in the usa, canada, australia, israel and new zeland.
www.rfm.com e-mail: info@rfm.com page 2 of 2 ?2008 by rf monolithics, inc. WIT910M2 - 6/5/08 connector pinout pin signal type description 1 gnd - signal and chassis ground 2 txd input data input to be transmitted 3 rxd output received data output 4 cfg input configuration select, used to switch radio between data and control mode 5 rts input request to send input, used for receive flow control by the host 6 sleep/dtr input module sleep/dtr input, sleep is active high 7 dcd output data carrier detect, indicates fhss synchronization on remotes 8 cts output clear to send output, used for receive flow control by the radio 10 power down input low power mode input, active low 16 vcc positive supply - minimum 3.3 v, 5 v minimum for 29 dbm transmit power, maximum 10.0 v pin 1 .21 [5.3] 1.69 [42.9] 3.16 [80.2] .13 [3.3] 1.69 [42.9] 1.83 [46.5] 1.48 [37.6] .135 [3.43] countersink and clearance hole for #2-56 [2.0 x 0.4] flathead screw. (2 plcs) .34 [8.6] 13 [3.3] rf connector .21 [5.3] .74 [26.1] long operating range with 29 dbm of transmit power and a receive sensitivity of -103 dbm, the WIT910M2 can achieve ranges in excess of 20 miles usin g 3 dbi omni-directional antennas. when long range isn ? t needed, the WIT910M2, measuring just 80.2 x 46.5 x 8.6 mm and weighing just 35 grams, is a powerful performer at low power, consuming only 100 ma at 3.3 volts. with the same size and mounting dimensions of the industry-leading wit2410m4g module, the WIT910M2 can be used in place of the wit2410m4g in existing designs, creating a 900 mhz product with little development effort. reliable the WIT910M2 provides both reliable communication and reliable operation. using robust frequency hopping spread spectrum technology, the WIT910M2 provides immunity to jamming as well as immunity to multipath fading. using a 24-bit crc for error det ection, automatic retransmit request (arq) and a 512 byte data buffer, error-free transparent communication is automatic. built-in data scrambling adds a measure of security. reliable operation is assured through rfm ? s stringent qa processes. all WIT910M2s are manufactured in an iso9000 certified facility. simple simple to integrate and use, the WIT910M2 ? s default parameter settings work for most applications. for other applications, software control makes changing parameter settings easy. the WIT910M2, with its small size and low power consumption, is simple to integ rate into your product. the WIT910M2 ? s rs-232 style interface with standard 3.3 volt cmos signal levels makes integration easy. since WIT910M2 modules are certified for license free operation, your WIT910M2 based product does not have to repeat radio regulatory approval. versatile WIT910M2 operating parameters are configurable under software control. even the transmitter power level can be selected using a straight- forward command set. both point-to-point and point-to-multipoint modes are supported. baud rates from 1.2 to 115.2 kb /s are provided for serial communication between a WIT910M2 and its host. physical specifications - dimensions in inches (mm)
|
