Tektronix RFM220, Руководство пользователя

Страница: 31 / 116

Getting Started
User Pro fi les and Roles The RFM220 system uses two user pro fi les to control software access:
Administrator and User. Each user pro fi le has different roles for supporting
the RFM220 system.
Administrator.
The Administrator pro fi le has the following roles:
NOTE.
Although some of the administrative functions listed below can be
performed by any user, it is recommended that the person who is assigned the
role of RFM220 system administrator be the one responsible for these tasks.
Con fi guring the RFM220 Aggregator and making sure the correct
RFM220 Client software is installed on all user PCs.
Con fi guring the network settings for each RFM220 instrument
and ensuring that each instrument is monitored by only one
RFM220 Aggregator.
Assigning passwords to the Administrator and User pro fi les.
Ensuring that the correct set of RFM220 Clients are connecting to the
correct RFM220 Aggregators
Con fi guring the alarm thresholds and other measurement parameters.
Con fi guring the channel plans and tuning the RFM220 instrument to a
speci fi c channel and frequency.
Upgrading the instrument fi rmware and the Aggergator and Client
software as needed.
User. The User pro fi le has the following role:
Viewing the measurement status of the signal connected to the
RFM220 instrument and generating error log reports.
NOTE.
A person logged in under the User pro fi le is not be able to change
the RFM220 system con fi guration.
Supported ISDB-Tb
Modes
The RFM220 demodulator supports the ISDB-Tb modes listed below:
Table 1: Supported ISDB-Tb modes
Item Description
Transmission modes Multi-carrier (OFDM)
Bandwidth 6 MHz
FFT (carrier spacing) Mode 1 (4 kHz), Mode 2 (2 kHz), Mode 3 (1 kHz)
Mapping
QPSK, 16QAM, 64QAM
Time interleave From 0 to 32
Guard intervals 1/4, 1/8, 1/16, 1/32
FEC 1/2, 2/3, 3/4, 5/6, 7/8
Hierarchical mode Single layer, 1+12 layer, layered A+B, layered A+B+C
RFM220 User Manual 5