Tektronix MTM400 Manuel d'utilisateur télécharger pdf (Page 155)

Interface Configuration and Interpretation

MTM400 MPEG Transport Stream Monitor User Manual 3-111

Symbol Rate (MS/s)

Symbol rate value in mega symbols per second.

Enter the required value and select Set.

Viterbi Rate Auto

When enabled, the L-Band adapter automatically establishes the

Viterbi Rate when acquiring Front End Lock.

NOTE. The Viterbi Rate Auto option will not work correctly if the

Viterbi rate is 5/6. If this rate (5/6) is known, or suspected, then

the Auto option should not be used.

22KHz Tone The Local Oscillator Frequency is selected by applying a 22 kHz

tone.

Invert Spectrum

The sense of modulation may be inverted due to the number of

mixing stages in the installation. Enabling the Invert Spectrum

checkbox will invert the L-Band output.

Front End Lock If the L-Band adapter Front End is able to acquire full lock onto

the channel and is receiving the signal correctly, the Front End

Lock (FEL) indicator will light up green. When a signal is

present but no lock is achieved the indicator is red. When no

signal is found, the indicator is gray.

BER Bit Error Rate.

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Tektronix MTM400 Manuel d'utilisateur Page 155