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7400A Data Module
Features
The basic features of the 7400A data module are:
DCP mode 2 operation only
Full-duplex, 10-bit start/stop, asynchronous operation
Asynchronous data rates of 0.3, 1.2, 2.4, 4.8, 9.6, and 19.2 kbps
Even, odd mark, and space parity options
Automatic answer option
Signal loss disconnect option
Autobaud
Autoparity
Long-break and triple-break disconnect options
Data features for modem pooling applications include:
EIA RS-232-D DTE interface, enchanced with CI2 and CH2 leads
Interface for D-lead control modems
Interface for Hayes-compatible modems
Data features for host or terminal applications include:
EIA RS-232-D DCE interface
Keyboard dialing and Hayes user interface emulation option
Answer only
Cyclic Ring-indicator option
Ignore DTR input option
Power
The stand-alone 7400A Data Module operates with power from a WP90110 L7 AC power con-
verter. This is a modular AC to DC adapter that is normally plugged into a wall outlet. The Z77A
Data Mounting has a built-in power supply for powering data modules in the multiple-mount
arrangement.
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