Comtech EF Data SMS-458B - Manual (Page 122)

SMS-458B Modem Protection Switch Revision 2
Glossary MN/SMS458B.IOM
g–2
LVD Low Voltage Directive
M&C Monitor and Control
MF Modulator Fault
MOD Modulator
MHz Mega Hertz
N No change of state
NC Normally Closed
NO Normally Open
NRZ Non-return-to-zero
PCB Printed Circuit Board
PREV Previous
RAM Random Access Memory
RMA Return Material Authorization
ROM Read Only Memory
RS Recommended Standard
RX Receive
RZ Return-to-zero
SDM Satellite Data Modem
sec Seconds
SD Send
Data
SMS Satellite Multipurpose Switch
SP Switch Position
TX Transmit
VAC Volts Alternating Current
VDC Volts Direct Current
W Width or Watt