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