Data Connect IG202T-R38


The Data Connect IG202T-R38 is a Bell 202 modem for asynchronous and synchronous data transmission in 300-3400 Hz voice band.  The modem supports several international standards ITU V.21, V.23, R.35, R.37, R.38A, R.38B, V.29, Bell 103, Bell 202 and proprietary Cegelec 1200/600Bd and Indactic 33 communication standards.

IG202T-R38-DC-12 Standalone DC voltage (9-18 VDC)
IG202T-R38-DC-24 Standalone DC voltage (18-36 VDC)
IG202T-R38-DC-48 Standalone DC voltage (25-50 VDC)
IG202TRM-R38 Rackmount DC voltage (10-48VDC)

The modem can operate half or full-duplex, point-to-point or point-to-multipoint.  When using FSK modulation, recieve and transmit channels may be independently set. The modem employs advanced DSP technology, thus offering high service flexibility through programmable features.

Software configuration is performed via Hayes AT command set. AT commands can be initiated from any terminal application using an RS-232 communication interface.Additionally, for easy firmware upgrade a bootstrap loader is provided. The modem features programmable modem capability for SCADA or power utility communication networks.

The Data Connect IG202T-R38 can support a range of standards including ITU R.35, R.37, R.38A, R.38B, V.21, V.23, Bell 103, and Bell 202. The modem also features Specialized Line, Power Line Carrier, or radio communication. The IG202T-R38 is designed for use in SCADA systems mainly based upon power utility communication networks.

Depending on modulation standards it can communicate through specialized, private or leased lines, radio links and power lines (PLC) The IG202T-R38 is available as a desktop modem or in two different types of standard 19″ rack, including: 1U rack with 1, 2, or 3, modems per rack; 3U rack with 10, 23, or 14 modems per rack, with additional blank front plates covering unused slots. All connectors at the rear side are accessible at the back openings.



Type: Data Transmission on audio frequency analog medium

Media: Leased Line, Radio, PLC

Modes: -Asynchronous or synchronous, Point-to-point, multipoint, 2-wire or 4-wire
-Support for synchronous Indactic 33 protocol


DTE Interfaces
RS-232C, DB9 (connector)
-Signals: DCD, RD, TD, DTR, SG, DSR, RTS, CTS, & RI
-Character length: 5-9 data bits, 1 start, 1 stop
– RTS/CTS Delay: adjustable by 1ms step within range of 40-6825ms
-Option to transmit on RTS
-Configuration: AT command set

Analog line
-DB15 (female) connector
-600Ω high impendence with return loss <0.2
-Transmission level: 0 to -32dBm, programmable by 1dB step
-Receive level: 0 to -36dBm, programmable by 1dB step, min. -48dBm
-Radio control: half-duplex control squelch detection

Power Supply
2-position screw plug type (for 2-2.5mm 2-wire)


LED Indication
Power Supply
9-18VDC, 9-12VAC, model 12
18-36VDC, 14-23VAC, model 24
36-72VDC, 25-50VAC, model 48

Transformer up to 1500V

Immunity to noise
Peak pulse noise: 100V Peak
-Effectiveness Interference at 50 Hz: 80V rms

Operation and storage: -10° to +50°C

desktop aluminum enclosure 112x30x170mm
-19” rack: EUROCARD PCB, 160x100mm 3HE, 6T in 1U and 3U rack