1. Connectivity Over Radio ™ DL-3282 1200 Baud Modem The DL-3282 external modem is designed for SCADA markets which utilize slow speed data transfer modes. The DL-3282 is FCC refarming compliant when paired with the RNet ™ brand JSLM or COR ™ brand DL- 3400 telemetry radios. This transparent modem is designed to eliminate dribble bits, making it capable of sending Modbus Protocol messages. User programmable to operate at 1200 and 300 bps. Selectable operating modes: Bell 202 and 103. RS-232 compatible with standard RTS/CTS hardware handshaking capable of half or full duplex operation. Small size permits easy installation in a wide variety of applications. Internal LED aids troubleshooting. Flashing green indicates power and that the unit is operational. Solid red indicates transmit. Standardized interface making it configurable with all Dataradio COR radio products. Rugged design with two-year warranty and manufactured in the U.S.A.

2. General FCC ID Part 15 Dimensions (L x W x H) 4.75” x 2.90” x 1.237” (12.07cm x 7.37cm x 3.14cm) Operating Voltage 7 to 16 VDC Current Drain Less than 50 mA Temperature Range -30°C to +60°C Data Interface EIA RS-232C standard DB-23 subminiature connector, female COR ™ Brand Radio Interface 10-pin 3M type 3325 connector RNet ™ JSLM Interface DE-15 pin connector RTS/CTS 30 / 60 / 180 / 240 msec Data Rates FSK: 1200, 300 bps Data Format Transparent to asynchronous data Bit Error Performance** Less than 1x10-6 at 18 dB SINAD with 3.3 kHz deviation and 25 kHz RF channel bandwidth Transmit Keyline Driver logic low open-collector NPN transistor with emitter grounded I c (max) = 200 mA; V cc-on (max) = 0.3 V * Specifications listed are typical for most applications using good RF propagation and installation practices. Refer to DL-3282 manual for minimum specifications. ** Maximum system performance occurs when modem Tx data level is adjusted to produce 2/3 of the allowable deviations. Dataradio COR Ltd. 299 Johnson Avenue, P.O. Box 1733 Waseca, MN 56093-0833 USA Phone: 1-800-992-7774; 507-835-8819 Fax: 507-835-6648 W ebsite: www.dataradio.com Interface Information Detail A The data interface connector is an RS-232C standard DB-25. Detail B COR ™ brand telemetry radio interface connector is a 10-pin 3M (Type 3325). Pin Description Pin Description 1 Wideband Out 6 Keyline (active low) 2 Wideband In 7 Carrier Detect 3 NC (reserved for future) 8 FSK Out 4 NC 9 Ground 5 B+ 10 FSK In Detail C DE-15 connector for JSLM interface. Pin Description Pin Description 1 Squelch In 9 13 volts 2 PTT Out 10 Subaudible Data 3 Ground 11 Tx / _Rx In 4 Tx Wideband Data 1 12 ARQ Out 5 Tx Data 2 13 Ground 6 Intercept / Busy In 14 Rx Wideband Data 1 7 Tx Mute Out 15 Rx Data 2 8 13 volts 1 Filtered 2 Unfiltered Form S299 0 9/ 00 pn 000-0000-299 Specifications subject to change without notice. RNet is a trademark of Dataradio, Inc. COR is a trademark of Dataradio COR Ltd. ©1999 Dataradio COR Ltd. Printed in USA. DL-3282 Technical Specifications * Modes of Operation (switch selectable) Transmit Frequency Receive Frequency Answer Modem Baud Rate Duplex Space Mark Space Mark Tone Freq. (bps) (Hz) (Hz) (Hz) (Hz) (Hz) Bell 103 Orig 300 Full 1070 1270 2025 2225 — Bell 103 Ans 300 Full 2025 2225 1070 1270 2225 Bell 202 1200 Half 2200 1200 2200 1200 2025 Bell 202 1200 Full 2200 1200 2200 1200 2025 Bell 202 Equalized 1200 Half 2200 1200 2200 1200 2025 1.237” 1.450" .537” 2.900” ± .020” See Detail A Front View 2x .110” 2x .110” 1.237” .545” 2.900” ± .020” .410” .270” .850” 1.745” 2x 2.680” .378” 2x 1.017” See Detail B See Detail C Back View 3.500” 4.750” ± .030” Side View