CHAPTER 7
PAGE 55
RTTY DATA
Baudot or ASCII codes may be transmitted and received at
RATES:
15.15, 50, 56.88, 74.2, 110, and 300 baud.
MORSE
Continental Morse Code including all letters, numbers, period, comma, colon,
CODE:
dash, apostrophe, parentheses, quote, question mark, and AA, AR, AS, BT,
BT, KN, SK, and error prosigns. Receive speed automatically tracks from 1 to
100 wpm speeds: transmit speed may be set for 4 to 33 wpm.
MODEMS:
MORSE:
AF Active filter or Phase-lock loop filter; 800 Hz nominal center frequency.
RTTY
Mark
= 2125 Hz
HIGH TONES: Space = 2295 Hz (170 Shift)
= 2550 Hz (425 Shift)
= 2975 Hz (850 Shift)
CW ID a Space tone (all shifts)
RTTY
Mark
= 1275 Hz (170 Shift)
LOW TONES: Space = 1445 Hz (170 Shift)
= 1700 Hz (425 Shift)
= 2125 Hz (850 Shift)
CW ID = Spaoe tone (all shifts)
Transmit audio tone frequencies are automatically set to correspond to se-
lected modem and shift; NORM/REV switch changes polarity of RX tones on-
ly.
DISPLAY:
SCREEN:
5 inch diagonal measure (3.25" × 4.26") green CRT; 20 lines of 32 charac-
ters per line; four pages may be selected for viewing.
PAGE
56 lines of 32 characters per line (4 pages); 25 lines of receive text, 15 lines
MEMORY:
of pretype transmit text; 12 lines of memory channel storage.
CHARACTERS:
Full upper and lower case letters, all numbers and punctuation of the ASCII
character set, special graphic symbols for ASCII control codes; 5×7 dot ma-
trix; green characters on a dark background.
SCROLL:
Received text is displayed on bottom line of receive area of screen; new text
scrolls upward.
TX/RX CONTROL:
Automatic Keyboard Operated Switch (KOS) or manual keyboard or manual
front panel switch control of station transmit-receive circuitry (+ voltage).
INDICATORS:
LED:
Four LED indicators show MARK, SPACE, Morse center tuning (CW), and
Power indicator.
SCREEN:
One line of screen shows which CTRL- functions are presently in use; con-
tents of all HERE IS messages are displayed on page 3. (See APPENDIX B)
Summary of Contents for CWR6850
Page 1: ...CWR6850 TELEREADER INSTRUCTION MANUAL QUALITY COMMUNICATIONS EQUIPMENT April 1982 Printing...
Page 6: ...CHAPTER 2 PAGE 6...
Page 35: ...CHAPTER 5 PAGE 35 Figure 4 Connections To The CWR6850...
Page 41: ...CHAPTER 5 PAGE 41 Figure 6 Typical Video Detector Figure 7 Modified Video Detector...
Page 60: ...APPENDIX B PAGE 60 APPENDIX B CWR6850 DISPLAY FORMAT TOTAL DISPLAY CAPABILITY...
Page 61: ...APPENDIX B PAGE 61 PAGE 0 and PAGE 1 DISPLAY FORMAT...
Page 62: ...APPENDIX B PAGE 62 PAGE 2 and PAGE 3 DISPLAY FORMAT...
