User's Manual

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
µs
Microsecond
µV
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