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4.9 Transmission
(1) In CW mode
Make a wireless set in transmitting condition or prepare the semi-break-in condition by making
VOX being ON. Tap the key and CW characters corresponding to the respective keys as in Table 7 are
sent out and displayed on the screen. OUTPUT indicating LED lights at mark, does not light at space
and transmitting sound is heard from a speaker at this time.
On the completion of transmitting, the computer automatically enters into receiving state. How-
ever, in the case of no use of VOX, return the wireless set to the receiving state.
(2) In BAUDOT (RTTY) mode
Make a wireless set being in transmitting state, manipulate the keyboard of the computer and
BAUDOT characters corresponding to the respective keys as in BAUDOT column of Table 7 will be
sent out and displayed on the screen. At this time, OUTPUT indicating LED lights at mark, does not
light at space and transmitting sound is heard from a speaker.
The computer automatically enters into receiving condition when transmitting comes to an end.
Make, however, the wireless set return to receive condition at this end, because keying output contin-
ues to be ON (condition of MARK) and AFSK output maintains 2125 Hz (MARK frequency).
(3) In ASCII mode
In the case of recording in a tape recorder, make it recording condition; in the case of sending out
data to a microcomputer, make it receiving condition. Tap the keys and ASCII characters correspond-
ing to the respective keys as shown in ASCII column of Table 8 are sent out and displayed on the
screen. At this time, OUTPUT indicating LED lights at mark, does not light at space and transmitting
sound is heard from a speaker. On the completion of transmitting, the computer automatically enters
into receiving condition.
(4) Buffer memory
When the BUFFER switch is set at RUN, characters tapped with the keys are written in buffer
memory and put out in order of writing. If the tapping speed exceeds the transmitting speed, charac-
ters are stored in the buffer memory up to 23 characters. With 23 characters being stored, the cursor
disappears, gives a sound signal and inputs from the keys are rejected.
When the BUFFER switch is set at LOAD, character tapped with the keys are written in buffer
memory but not put out. At the time when 23 characters are stored, the cursor disappears, gives a
sound signal and inputs from the keys are not made. Characters are put out from the head of buffer
memory by setting the BUFFER switch to RUN. If the sentences that are to be transmitted next are
written in the buffer memory during receiving, continuous smooth sentences can be transmitted im-
mediately after the completion of receiving.
(5) Displaying on the screen
In the case that there is no need for display of transmitted sentences on the screen and that only
the display of buffer memory is required, turn the DISPLAY switch to RCV. The screen will come to be
used for receiving only.
Summary of Contents for Theta 7000
Page 6: ... 4 Figure 1 Connection ...
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