Tektronix RFM220, Руководство пользователя

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Reference
TMCC Monitoring The RFM220 demodulator will continue to monitor the RF signal quality even
if the ASI input is selected for routing to the MTM400A for TS analysis. In
this con
fi guration a 204-byte BTS input can be monitored providing TMCC
and IIP consistency analysis in the MTM400A in addition to monitoring the
RF broadcast signal quality.
TMCC information must be monitored to ensure that receivers can demodulate
the signal effectively. Errors in the TMCC information would lead to STBs
not functioning properly. In addition to displaying the TMCC information on
the RFM220 Client application, the MTM400A DTV monitor can be used
to provide TMCC and IIP consistency testing and analysis at the Transport
Stream layer. The in-depth ISDB-Tb cross-table consistency testing was
developed in conjunction with Japanese broadcasters. When combined with
ISDB-Tb RF metrics, the Tektronix solution represents a powerful and unique
toolset for remote ISDB-Tb monitoring.
Frequency Shift Measurement
The RFM220 demodulator is able to measure the frequency shift of the input
signal. To make this measurement, you must connect a 10 MHz reference
signal to both the modulator equipment and to the 10 MHz In connector on the
RFM220 instrument.
76 RFM220 User Manual