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R&S SFD
Operating Mode
In DOWNSTREAM mode a single DOCSIS 3.0, DOCSIS 3.1, or ARB file transmission
is available. Narrowband ARB files can be assigned to a DOCSIS 3.0 channel or a
wideband ARB file up to 200 MHz can also be played out anywhere in the downstream
spectrum.
In UPSTREAM mode an A-TDMA, S-CDMA or OFDMA burst DOCSIS transmission is
available. Alternately, the transmission of ARB files over the upstream frequency range
of 5 MHz to 204 MHz can be made.
TX Mode
The TX Mode defines the active carrier if there is one currently transmitting. This
provides the user clear indication of what carrier is active as multiple carrier types can
be configured at the same time, but only one carrier can be active. This is DOCSIS
3.1, DOCSIS 3.0, or ARB.
Command Mode
Only one entity is allowed to have control of the R&S SFD at a given time. This means
only that entity is allowed to change R&S SFD settings. All entities are allowed to read
settings and status at the same time. R&S SFD responds to requests from all entities
in a serial fashion to display settings and status.
SNMP is the default entity in control. If SCPI establishes connection with the R&S SFD
it becomes the controlling entity and has a higher priority than SNMP. If a web GUI
user establishes a connection, the web GUI is allowed read-only access. If a web GUI
user wants to become the controlling entity, it has the highest priority and the user
needs only to click the Take Control button (see below).
Getting Started 2118.7546.02 - 02
Operating the Unit
Operation from a PC using the Web GUI
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