ClockWatch User's Guide

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Handshaking refers to the internal communications protocol implemented in the computer hardware by which data is transferred from the modem to the communications port.

RTS Enable: Determines whether to enable the Request To Send (RTS) line. Typically, the Request To Send signal that requests permission to transmit data is sent from the computer to the attached modem.

DTR Enable: Determines whether to enable the Data Terminal Ready (DTR) line during communications. Typically, the Data Terminal Ready signal is sent by a computer to its modem to indicate that the computer is ready to accept incoming transmission.

Handshaking Type: A handshaking protocol is used so data is not lost when data arrives at the communications port.

None:  No handshaking.
RTS: RTS/CTS (Request To Send/Clear To Send) handshaking.


The test frame contains controls to test if the settings work with the modem. When running tests, the dialog between the program and the modem are shown in the test frame.

Validate: Runs a preliminary test of the settings by sending them to the modem and monitoring the reply. At the end of test, gives an indication if the modem has replied properly to the commands sent to it.

Check all templates: When checked, checks each of the standard setting templates when the Validate button is pressed. If a suitable template is found then the validation will stop with that template's settings.

Dial: Test the settings by running an actual direct dial time check sequence. Dials the NIST, syncs with the modem, and waits for a time string from the NIST in response. When successful, the actual time string returned from the NIST will be displayed.

Terminal: Opens the Modem Test Screen to test the settings.