After the line of text is transmitted, the TTY command is terminated and the terminal
returns to the System Command level (@).
(5) Following the station's SOP or CEOI, the operator will transmit a one line message to
the distant station(s) (one station at a time), requesting a reply that the message was
Example of a one line message:
TESTING STATION NO. XXX (enter station's serial number) ACKNOWLEDGE
RECEIPT OF THIS MESSAGE.
(6) The operator will check all received messages to insure that communication with the
distant station(s) is satisfactory.
(7) When communication with the distant station(s) is considered satisfactory, the
operator will sign off and place the terminal's POWER switch in the OFF position.
The terminal will withstand extremes of heat or cold as listed in paragraph 1-9. When operated
within these limitations, moist air, dry heat or cold will not affect the system's performance. The
operator will take the following protective measures when these limitations are exceeded:
Insure the combination case is in place before damp cloth is applied.
During periods of intense heat, a lightly dampened cloth laid over the top and sides of the
terminal case will reduce the effect of the heat.