User's Manual

94 MDS Master Station MDS 05-6399A01, Rev. D
RTU—Remote Terminal Unit. A data collection device installed at a remote radio site. An internal RTU
simulator is provided with the transceiver to isolate faults to either the external RTU or the radio.
RX—Abbreviation for “Receive.” See also TX.
SAF—Store and Forward. An available feature of the radio where data is stored by a designated Remote,
and then retransmitted to a station beyond the communication range of the AP.
Signal-to-Noise Ratio—See SNR.
SCADA—Supervisory Control And Data Acquisition. An overall term for the functions commonly pro-
vided through an MAS radio system.
SCEP (Simple Certificate Enrollment Protocol): A scalable protocol for networks based on digital cer-
tificates, which can be requested by users without the need for assistance or manual intervention from a
system administrator.
SNR—Signal-to-Noise ratio. A measure of how well a signal is being received relative to noise on the
radio channel.
SSH: Secure Shell protocol for a network that allows users to open a window on a local PC and connect
to a remote PC as if they were present at the remote.
SSID (Service Set Identifier): A name that identifies a particular 802.11wireless LAN.
Standing Wave Ratio—See SWR.
Supervisory Control And Data Acquisition—See SCADA.
SWR—Standing Wave Ratio. A parameter related to the ratio between forward transmitter power and the
reflected power from the antenna system. As a general guideline, reflected power should not exceed 10%
of the forward power ( 2:1 SWR maximum).
Telnet—A terminal emulation protocol that enables an Internet user to communicate with a remote de-
vice for management activities as if it were locally connected to a PC.
Terminal Server—An available feature on the radio which encapsulates serial data from the
COM1/COM2 ports, and sends it over the air as IP packets. The data is decapsulated at the receiving end
and routed to the appropriate COM ports.
Transparent Mode—A mode in which payload data remains unchanged from its original format when it
is sent over the air. A radio in this mode is said to be “transparent” to connected equipment at each end of
a link.
TX—Abbreviation for “Transmit.” See also RX.
VLAN—Virtual Local Area Network
WAN—Wide Area Network
x710—The generic name for GE MDS legacy transceiver-family products, including the MDS 9710 (900
MHz), MDS 4710 (400 MHz), 2710 (200 MHz) and MDS 1710 (100 MHz).