Technical specifications, Carrier frequencies, Compatibility – Multi-Tech Systems MT202TD 1200 User Manual

Page 6: Data rates, Line requirements, Mode of operation, Model numbers, Modulation, Request to send/ clear to send, Timing

MT202TD User Guide

Technical Specifications

Your MT202TD modem meets the specifications listed below:

Model Number

MT202TD

Data Rate

0–1200 bps

Compatibility

Western Electric 202 and 202T
Data Sets, 202C, 202D, 202E,
202R models

Mode of Operation

2-wire half duplex or 4-wire full
duplex

Line Requirements

2- or 4-wire leased line
unconditioned

Modulation

Frequency Shift Keyed (FSK)

Carrier Frequencies

Mark:1200Hz; Space: 2200Hz;
Soft Carrier: 900Hz

Transmit Level

-0 dBm Adjustable to -9 dBm via
Dip switch

Frequency Stability

±0.01% (crystal controlled)

Receiver Sensitivity

-40 dBm under worst case
conditions

Timing

Request to Send/ Clear to Send:
180 ms
Carrier Detect:
Turn on 30 ms
Turn off 10 ms
Receiver Squelch:
Default 156 ms
Soft Carrier:
Default 25 ms
Minimum 10 ms