Glossary
A-7
MRX4000 PLUS
Operator’s Guide/
Technical Reference Manual
PAL-M
Phase Alternation Line
Color television standard used in many European
countries. Provides 625 horizontal lines of resolution
with 50 lines per field. Not compatible with NTSC or
SECAM.
PAL-N
Phase Alternation Line
Color television standard used in many European
countries. Provides 525 horizontal lines of resolution
with 60 lines per field. Not compatible with NTSC or
SECAM.
PC
Personal Computer
PCR
Program Clock Reference
PCS
Personal Communication Services, for example, for
cell phones and beepers.
PER
Parity Error Rate
ØLK
Phase Lock
PID
Program Identification
PLL
Phase Lock Loop
POTS
Plain Old Telephone System.
Refers to standard analog phone service sometimes
used as a back up method for communications.
PRBS
Pseudo Random Bit Sequence
QAM
Quadrature Amplitude Modulation
Table A-1: Useful Terms (Continued)
QPSK
Quadrature Phase Shift Keying
The signal (video+audio) is imposed onto the 70 MHz
carrier by varying the phase of the signal while
keeping the amplitude and frequency constant. There
are 4 possible values of phase that can be used to
carry information.
RCL
Received Carrier Level
The strength of a received RF signal in dBm.
RCU
Receiver Control Unit
Rcvr
Receiver
RD
Receive Data
RDS
Radio Data System
RF
Radio Frequency
RF Level
RF Power from the transmitter.
RFU
Radio Frequency Unit
RMA
Return Material Authorization
RPU
Remote Pickup
R-S
Reed-Solomon
RSSI
Receiver Signal Strength Indicator
RX
Receiver
Table A-1: Useful Terms (Continued)
Summary of Contents for MRX4000 PLUS
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