SCS PTC-IIex, Manual

Page: 210 / 220

F Glossary
Appendix F
22 Glossary
ADC
Analog Digital Converter
AFSK
Audio Frequency Shift Keying
AMTOR
AMateur Teletype Over Radio – ARQ-FAX process developed out of the SITOR
process by G3PLX.
ANSI
American National Standardization Institute. A Terminal-Emulation-Protocol was
determined by ANSI, which has been established as a standard for mailbox systems.
The ANSI-Terminal Emulation offers cursor control, color support, block graphic and
generation of signal tones.
ARQ
Automatic Request. A procedure to transmit data without errors. If the transmitted
data occurs with errors at the receiver, the defect information block will be called
from the transceiver once again.
ASCII
American Standard Code of Information Interchange. 7-bit code for numbers,
characters, special characters and control characters.
Backup
Another word for safety copies, which should be done regularly. Very special (often
created with a lot of work) program configurations should be saved regularly too.
Baudot Code
5-bit code used to transmit characters in RTTY and AMTOR.
BIOS
Basic Input Output System. The BIOS contains initialization and test programs for the
system start as far for the driver (relatively simple) for the peripherals.
Boot
The whole system start from switching on the system to the moment the system is
ready to be used by the operator is called “Boot”.
BREAKIN
Interrupt. The current receiver is able to interrupt the tansceiver and because of this
forces a key transmission.
CHANGEOVER
Key transmission from the transceiver to the receiver.
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