IG202T/V23 Industrial Grade Bell 202 & V23 1200 Baud Modem

 

IG202T/V23 Industrial Grade Modem is the most dependable and easy to install Bell 202 & V23 compatible leased line modem available today!!!

 

  

 

 

The Data Connect low speed IG-202T/V23 modem is designed and manufactured for rugged industrial communication networks. It is the most industrial grade 202T & V23 modem on the market operating from -40C to 85C (185F). The IG-202T/V23 modem delivers cost effective and reliable 1200bps asynchronous solutions for point to point and multipoint connectivity. For optimum performance, the modem employs FSK modulations to be compatible with Bell-202T and ITU-V23 standards and communicates over a variety of transmission lines.

The IG-202T/V23 modem is ideal for industrial communication applications including SCADA systems, RTUs, traffic monitor and control, and industrial and automation networks. The

IG-202T/V23 modem supports RTUs with switch selectable settings and no software code commands. The IG-202T/V23 modem is designed to operate 4-wire full duplex or 2-wire half duplex over, Special Access Service VG6 that is a 4-wire channel suitable for the access segment of most voice grade data circuits, unconditioned leased lines, or private metallic circuits.

The IG-202T/V23 modem can operate over a wide range of AC or DC power supply voltages and temperatures. With proven reliability and ease of installation the IG-202T/V23 is ideal for point-to-point and point-to-multipoint polling networks, where reliability and low-network latency are critical for system performance. The IG-202T/V23 modem has internally Flow Control options of “Constant On” and “Controlled by RTS”. The Flow Control options are Dip-Switch selectable and the options performs the same functionality as DataSense or other flow control and buffering schemes. With its Auto-RTS mode, the modem can support DTE/RTUs with 3-wire serial interface (TD, RD, SG) in point-to-point and multi- point polling applications.

 

The IG202T/V23 industrial grade Bell 202/V23 modem has selectable EIA RS-232/V.24 and RS-485 DTE support. It also features built-in diagnostics for local and remote testing. The configuration and options on the IG202T/V23 is provided by DIP switches and jumpers,

eliminating the need for an AT command set. Unlike any other 202T/V23 modem you can buy, the IG202T/V23 has heavy-duty surge protection at the power supply and leased line inputs. IG202T/V23 also uses an isolated DC to DC power converter for protecting critical DC or battery power systems.

 

 

General Specifications

Data rate: 0-1200 bps

Data format: Transparent to DTE

DTE interface: EIA RS-232/V.24, or RS-485 compatible

Line conditions: TELCO voice band 4- or 2-wire leased line, conditioned or unconditioned lines. Private metallic circuits

Operating modes: 2-wire half-duplex or 4-wire full-duplex

Modulation: FSK, Bell 202T or V.23 compatible

  • Mark = 1200 Hz, Bell 202 & 1300 Hz, V.23
  • Space = 2200 Hz, Bell & 2100 Hz, V.23
  • Soft Carrier = 900 Hz Bell 202T only)

RTS-CTS Delay: 10 or 33 ms, Bell 202T & 33 ms, V.23

Receiver dynamic range: 0 to –43 dBm

Operating temperature: -40°C to +85°C

Power supply: Wide range switching power supply:

  • IG202T/V23 (AC version): 90 to 265 Volts AC, 50/60 Hz, single phase or 90 to 400 VDC
  • IG202T/V23-DC (DC version):10 to 60 Volts DC

Surge protection: Leased line, up to 15KV

Flow control: Constant or RTU Controlled, DIP switch selectable

Carrier loss recovery: Automatically

Auto RTS: Support DTE without hardware RTS

Anti-streaming: 30-second timer to prevent transmitter lock-up network

Mechanical Specifications

Enclosure: ABS with removable top cover Dimensions: 4.1” wide x 4.9” long x 1.40” high

Weight: 0.5 lbs without AC to DC power converter module

Interface connectors

Leased Line: 4-position RJ-11C modular Jack

Data Terminal Equipment: DB-9 female connector (for RS-232) RJ-11C module jack (for RS-485)

 

Interface Connector Pin Assignments

 

Leassed Line RJ11C Pin Assignments
Pin # Signal
1 Not Used
2 TX
3 TX (TX/RX)
4 TX (TX/RX)
5 RX
6 Not Used

 

Back-to-Back Connection to a Second Modem

 

 

 

 

 

 

 

 

RS-232 (DTE) Interface

Signal Name Modem Input/Output DB9 Pin Description
DCD OUTPUT 1 Data Carrier Detected
RXD OUTPUT 2 Receive Data
TXD INPUT 3 Transmit Data
SG 5 Signal Ground
DSR OUTPUT 6 Data Carrier Detected
RTS INPUT 7 Request To Send
CTS OUTPUT 8 Clear To Send

 

RS-485 (DTE) Interface
RJ11 Pin Number Corresponds to Sgnal Name Modem Inpt or Output
1 Not Used NA
2 RxD+ Output
3 RxD- Output
4 TxD+ Input
5 TxD- Input
6 Not Used NA

 

Environmental Specifications

Operating temperature: -40 to + 85 Degrees Celsius Storage temperature: –40 to +125 Degrees Celsius Operating humidity: 5 to 95 %, non-condensing Line isolation: 3750 V RMS

Surge protection: Leased line up to 15K VA

 

 

Product in Test

 

Data Rate

 Cable Equalizer select Option Operating over TELCOLeased Lines  

Operating Distance

w/ 26 AWG cable

 

Operating Distance

w/ 24 AWG cable

 

IG202T/V23

 

1200 bps

 

Disabled

 

Yes

100,000 FT

(18.94 miles)

125,000 FT

(23.67 miles)

 

1200 bps

TX & RX

Enabled

 

Yes

140,000 FT

(26.52 miles)

175,000 FT

(33.14 miles)

 

IG202T/V23

 

300 bps

 

Disabled

 

Yes

130,000 FT

(24.62 miles)

162,000 FT

(30.68 miles)

 

300 bps

TX & RX

Enabled

 

Yes

182,000 FT

(34.47 miles)

227,000 FT

(42.99 miles)

 

Test conditions:       1)    Point-to-point, full duplex, switched carrier is used.

  • Test message is the FOX message
  • Polling error to be less than 1 in 1000

 

Modem Switch Settings
DIP Switches SWITCH SETTINGS
ON OFF (Default)
DIP Switch S1
SW1-1:  Auto RTS Enable Disable
 

SW1-2:  RTS-CTS Delay (Bell 202 mode only)

 

33ms

10.0 ms (Bell 202T) 33 ms (V.23 mode)
SW1-3:  Flow Control Constant ON Controlled by RTS
SW1-4:  Soft Carrier (Bell 202 mode only) Enable Disable
SW1-5: Anti-streaming Enable (30 Seconds) Disable
SW1-6:  2- or 4-wire leased line 2-wire half duplex 4-wire full duplex
SW1-7:  Transmitter Termination Controlled by RTS 600 ohms
SW1-8:  Receiver Termination 600 ohms High (approx 20K)

 

S-232 or RS485 Select
 

 

RS-232/ V.24 Interface

 

 

RS485/RS422 Interface

 

JP2: Pin 1 to Pin3 Pin 2 to Pin 4

 

JP2: Pin 3 to Pin 5 Pin 4 to Pin 6

 

Transmit Levels

Transmit Level JP1 Jumper Settings
0 dBm Pin 1 to Pin 2
−4 dBm Pin 3 to Pin 4
−8 dBm Pin 5 to Pin 6
−12 dBm Pin 7 to Pin 8

 

 

DATA CONNECT ENTERPRISE 3405 OLANDWOOD COURT

OLNEY, MD 20832

 

O: 301.924.7400 EXT. 17

F: 301.924.7403