User's Manual

APEX1933 USER MANUAL V1.2 Tech Support: 1-888-317-8766
4
1.4 Glossary
The following is a list of abbreviations and terms used in this manual.
Abbreviation Definition
AC
Alternating Current
CDMA Code Division Multiple Access
DC Direct Current
DL Downlink
GUI Graphic User Interface
LED Light Emitting Diode
PSU Power Supply Unit
RF Radio Frequency
UL Uplink
VSWR Voltage Standing Wave Ratio
NCU Network Control Unit
MCU Main Control Unit
NMS Network Management System
SNMP Simple Network Management Protocol
AGC (Automatic Gain Control)
AGC prevents the equipment from exceeding its maximum output power by reducing the gain
automatically. AGC is used to adjust the gain to an appropriate level for a range of input signal
levels
.
ASD (Automatic Shutdown)
ASD helps protect the amplifier from over load. ASD helps protect the network by preventing
excessive signal output power.
ASD does not:
1. Prevent oscillation
2. Protect from excessive input.
There are three parameters: ASD Level, ASD Time, and ASD Iteration.
If the output power exceeds higher than the “ASD LEVEL”, the equipment will shut down for “ASD
TIME” seconds. If shutdown repeats “Iteration” times, the equipment will require manual re-start.