Appendix
5-2
DataNex
EMS
Wireless,
DATA-20
Digital Radio
FSK
Frequency Shift Keying
FT1 Fractional
T1
IC Integrated
circuit
IEC
International Electrotechnical Commission
IF Intermediate
frequency
IMD Intermodulation
Distortion
ISDN Integrated-Services Digital Network
Kbps
Kilobits per second
KHz Kilohertz
LED Light-emitting
diode
LO, LO1
Local oscillator, first local oscillator
LSB
Least significant bit
Mbps
Megabits per second
Modem Modulator-demodulator
Ms Millisecond
MSB
Most significant bit
MUX Multiplex,
Multiplexer
µ
s
Microsecond
µ
V
Microvolts
NC Normally
closed
NMS
Network Management System
NO Normally
open
PCB
Printed circuit board
PCM Pulse
Code
Modulation
PGM Program
PLL Phase-Locked
Loop
QAM
Quadrature Amplitude Modulation
R Transmission
Rate
RF Radio
Frequency
RPTR Repeater
RSL
Received Signal Level (in dBm)
RSSI
Received Signal Strength Indicator/Indication
RX Receiver
SCA
Subsidiary Communications Authorization
SCADA
Security Control and Data Acquisition
SNR Signal-to-Noise
Ratio
Summary of Contents for DataNex Data-20
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