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E-2

The Test Signals menu window is used to generate test signals.

PRBS Insertion

Insertion of a PRBS sequence instead of the transport stream present at 
the input

Selection:
– OFF: Normal operating status, test sequence not active
– 2^23-1, 2^15-1 or 2^9-1: Displayed PRBS sequence selected

Test Signal Insertion

Insertion of unmodulated test carriers or suppression of modulated car-
rier ranges in the output frequency spectrum

Selection:
– OFF: Normal operating status, test signal not active
– CARRIER 1: Insertion of an unmodulated test carrier at carrier 

position 1

– CARRIER 2: Insertion of an unmodulated test carrier at carrier 

position 2

– C1 and C2: Insertion of two unmodulated test carriers at carrier 

position 1 and carrier position 2

– BANDPASS: Suppression of the modulated carriers from position 0 to 

carrier position 1 and from carrier position 2 to the end of the fre-
quency spectrum

– BANDSTOP: Suppression of the modulated carriers in the range 

between carrier position 1 and carrier position 2

In the BANDPASS and BANDSTOP functions, the value for carrier 1 
must be smaller than the value for carrier 2.

Carrier 1

Sets the position for test carrier 1

Carrier 2

Sets the position for test carrier 2