202T 4-wire Private Line Modem

4-Wire Private Line FSK Analog Asynchronous Modem

Full duplex to 1200 bps
Asynchronous RS-232
4-wire, full duplex line application
900 Hz soft carrier turn off
Anti-streaming
Standalone or rack mount
High stability transmit and receive frequency
Ruggedized for full temperature range
Quiet multi-layer board
Fully compatible with other 202T's

FEATURES
DESCRIPTION
SPECIFICATIONS

General
Indicators
Switches
Physical and Electrical

HOW TO ORDER

FEATURES

Full duplex to 1200 bps
Asynchronous RS-232
4-wire, full duplex line application
900 Hz soft carrier turn off
Anti-streaming
Standalone or rack mount
High stability transmit and receive frequency
Ruggedized for full temperature range
Quiet multi-layer board
Fully compatible with other 202T's

The 202T modem operates at 0 to1200 bps asynchronous, with FSK modulation. It uses the latest DSP modem circuitry to insure excellent performance and future availability. It has 900 hz soft carrier turn off for multidrop and an anti-streaming option. 7.25" half card size, standalone and custom OEM board configurations are available. The pc card version uses the internal PC ISA bus only for power from the pc bus. The PC card fits into a 20 slot rack mount chassis that is only 7" high. The phone line connector is an RJ-11 for 4-wire leased line operation. Transmit is on positions 2 and 3, receive 1 and 4 of the 4 position RJ-11connector. The modem has a push/push switch for local digital loop on or off. The loopback switch is located on the rear of the unit, next to the DB-25 terminal connector.

SPECIFICATIONS

General

Modem

Analog full duplex, 4-wire, 600 ohm balanced, Frequency Shift Keying:
Mark-1200 hertz, Space-2200 hertz, Speed 0 to 1200 bps
900 Hertz Soft Carrier Turn Off for multidrop operation
Transmit level control 0 dBm or -16 dBm
Will drive up to 30 Km of cable depending upon wire gauge
Switched carrier or constant carrier operation (RTS forced on or terminal controlled)

Digital Interface

RS-232, DB-25S
Signals are Tx, Rx, RTS, CTS, DSR, DCD
RTS/CTS delay is 12 or 20 ms in switched carrier mode or RTS can be forced on
Rx data is clamped to mark when no receive carrier detect is present.
202T Modem - FSK Analog Modem, Async

Controls and Indicators

Power, Tx Data, Rx Data, RTS, CTS, DCD, Test
Digital loop via rear panel switch and front DIP switch
Controlled carrier (with RTS/CTS delay) or constant carrier with RTS/CTS on
Anit-streaming option (8 seconds), Loopback or normal operation
Transmit level - 0 db or -16db, 900 Hz Soft Carrier turn off On or Off

Physical and Electrical

-35C to +70C operating temperature range, PC ISA bus format or standalone version,
PC bus for power and ground only, standalone unit uses 110V wall mount supply
Half size PC card, 7.25"D x 4.25"H
Stand alone: 5.5" W x 7.375"D x 1.5" high, 110VAC wall mount supply (9VDC, 500 ma)
Other DC power supply voltages, 12, 24, -48, 125 VDC, available on special order
A 1.5" x 19" fixture available to rackmount up to 3 standalones in a single 1U height
20 slot rack chassis on slide guides is 19"W x 16"D x 7"H, 110VAC 250 W power supply

Switches

OPTION SWITCH SETTINGS 
Switch				DOWN			UP
1 - Reset			Toggle Up/Down	
2 - Anti-streaming		Off			On	
3 - RTS/CTS delay		12 ms			20 ms
4 - RTS control			Forced on		Controlled by Terminal	
5 - Soft Carrier Turnoff	Off			On
6 - Reserved			-			-
7 - Transmit Level		-16 dB			0 dB
6 - Loopback			Off			On

APPLICATION


Standalone rack fixture - 18.95" x 1.5" high	Single Unit Rack Mounts

How to Order

PRICING:
202T-SA	202T Modem - Standalone	$ 595
202T-R	202T Modem - Rackmount	$ 544
20S Rack	20 Slot Rack w/ power supply	$ 1500
1U Rack	Rack mount 1 unit wide	$ 15
1U Rack-3	Rack mount 3 units wide	$ 75

202T 4-wire Private Line Modem

4-Wire Private Line FSK Analog Asynchronous Modem

PRICING: