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MT202TD User Guide
6
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