Comtech-ef-data VIPERSAT File Streamer v1.2.x Uživatelský manuál Strana 45

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Appendix A - Glossary A-1
A
PPENDIX
GLOSSARY
A
ALC Automatic Limit Control is a closed loop mechanism controlling the gain
stabilization of the HPAs RF output power.
APL Asynchronous Party Line – A VIPERSAT term for RS-485 multi-drop bus used
for control of indoor equipment. See also SPL.
ARP Address Resolution Protocol – A protocol for a LAN device to determine the
MAC address of a locally connected device given its IP address. See also MAC.
ATM Asynchronous Transfer Mode
B
BER Bit Error Rate (sometimes Ratio) – A measure of the number of data bits
received incorrectly compared to the total number of bits transmitted.
BUC Block Up Converter
BPS Bits Per Second – A measure of transmission speed. See also Kb/s &
Mb/s.
BPSK Binary Phase Shift Keying – A modulation technique in which the carrier is
phase shifted +/- 180 degrees. See also QPSK.
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